I have a C6506 that is unlocked, have checked via the service code. Not just unlockable but unlocked. Certain.
I've used both older flashtool64 that worked before (0.9.11.0) on a Surface Pro (windows 10) and newer (0.9.19.10) on a desktop (Windows 10 also).
In both cases I can flash 10.7.a.0.222 for C6506. I also can flash 10.3.a.0.423 on the Surface (did not try on others). It boots, it works, no issues.
I can get in fastboot mode on the phone (blue light), but on the surface with the older Flashtools (and associated drivers) I cannot access the phone at all, just waiting for device.
On the newer flash tools with drivers installed (turned off signing verification) I can get into fastboot and do things like a "getvar version", but I cannot do more complex things like get the unlock status, nor can I flash a boot image (in this case from CM 12.1). It says "Command not allowed" in the write phase. Yes, the phone is unlocked, really, at least it says it is, and I did do an unlock code with legitimate Sony provided codes. And previously rooted using it as unlocked.
I've also tried getting root with a pre-rooted 10.7.a.0.222 -- I can get an older version rooted, put recovery on it, I can do the install of the zip and it completes -- then boot loop. This is using Beta-SuperSU-V2.52.zip and zl-lockeddualrecovery2.8.23-release.combined.zip with PRFCreator. (The recovery is also what I used to do the install). Boot loop. Can't get out of it without a new flash despite power off, resets, etc. Can't get back into recovery either at that point.
I do have the phone working with a non-rooted stock Sony 10.7.A.0.222. As mentioned, flashes fine. I just can't seem to get CM running (can't fastboot the boot image), nor can I get root on the stock sony (boot loop).
I've also tried the fastboot program on the current SDK as well as the one in Flashtools without any difference, still can't flash a boot.img from cm12.1.
I feel like I'm missing something fundamental, like maybe some aspect of running Windows 10 that is interfering (I have no older version currently). I'd suspect CM12.1 but it also is failing with the typical root technique for 5.1.1 stock (i.e. root older version first).
While I am not an active developer, this is not my first round of flashing or updating the phone, though it is my first round in a year or more, certainly since Windows 10.
I realize this is a lot like "nothing is working what could be wrong" and not a very specific question, but wondering if anyone has any suggestions as to whether there might be a common cause here.
I do have one more interesting piece of information that I do not understand.
I downloaded Emma and tried to use it to flash stock just to make sure the image I had was good for stock.
Emma says "this phone is locked". So thinking my last flash re-locked it, I went into flash tools and did this:
U:\AndroidSDK\platform-tools>fastboot oem unlock 0xkey-from-sony
...
OKAY [ 2.969s]
finished. total time: 2.969s
After doing so, Emma STILL says it is locked.
Flash tool however allows me to flash it.
Any clue why Emma would say "locked" when I just finished unlocking it?
In service, configuration it says "Yes" to unlocked, not "no/yes" or any other combination, just "yes".
focus on getting the sdk tools to work, like fastboot. What do you mean it just does not flash( show console output of your fastboot flash boot boot.img), Is fastboot not recognized in the device manager, It is odd you can use it to 'oem unlock'... I had to change driver files when I switched from windows 7 to windows 10. if you can 'fastboot devices' and 'adb devices' you should be good to go as far as flashing, maybe you have bad images not made for the phone? I am no pro take my information with a grain of salt.
ham5 said:
focus on getting the sdk tools to work, like fastboot. What do you mean it just does not flash( show console output of your fastboot flash boot boot.img), Is fastboot not recognized in the device manager, It is odd you can use it to 'oem unlock'... I had to change driver files when I switched from windows 7 to windows 10. if you can 'fastboot devices' and 'adb devices' you should be good to go as far as flashing, maybe you have bad images not made for the phone? I am no pro take my information with a grain of salt.
Click to expand...
Click to collapse
I will try again tomorrow (need the phone tonight and it takes a while to get stock back up and configured).
Concentrating on fastbook and on my more-working desktop (the tablet definitely has some issue, I think driver related).
I installed the newest Flashtools, and also installed the fastboot and s1 drivers from it (I think that's what they are called). I configured Windows to permit them unsigned and they installed without error.
When I try to do CM12.1, what I did was download their distribution zip, and unzip it and pull out the boot.img file. I then put the phone in fastboot mode, and it worked and was recognized (e.g. "fastboot getvar version" responds).
Going by the instructions for CM12.1, I then tried to do "fastboot flash boot c:\pathwhereitwas\boot.img"
This does a send of the file, which works, and then does a write and says "command not allowed". So it appears to transmit the file but can't commit it to flash. I cannot post the log as didn't save it but if you think relevant can post tomorrow.
As to the locked issue -- after trying this the first time, I thought "maybe the phone has been locked again". So I did the #*#*service*#*# and see it says "yes" for unlocked. But just to be safe, I dug out my 2 year old email from Sony and did another unlock. As to why I did it with the "oem unlock" that's how CM12.1 suggests (https://wiki.cyanogenmod.org/w/Install_CM_for_odin). The first time I typed it, it failed, the second time it said "OK". Tried the flash boot again, same "command not allowed error".
The phone goes into fastboot mode easily (blue light, plus response to things like getvar). It goes into flash mode fine also, and indeed, after I gave up (each of several times) I flashed stock back on the phone and it came up with 5.1.1 stock.
I wanted to run CM12.1 as I really don't like that stock has not patched stagefright, plus I hate not having root.
Any suggestions what I may be doing wrong, that fastboot commands sometimes work, but I can't flash the boot file?
Am I flashing the RIGHT boot file? Should I be flashing the CM12.1 recovery image they have on their download page instead? (But the instructions are pretty clear).
I should note that the phone does not appear to have a recovery on it -- booting after flashing stock, and toggling all the volume buttons in any combination is just ignored.
I think your really digging way to deep into this...
The phone goes into fastboot mode easily (blue light, plus response to things like getvar). It goes into flash mode fine also, and indeed, after I gave up (each of several times) I flashed stock back on the phone and it came up with 5.1.1 stock.
Click to expand...
Click to collapse
what is the difference between fastboot and flash mode? Ive never heard of this flash mode....
This does a send of the file, which works, and then does a write and says "command not allowed". So it appears to transmit the file but can't commit it to flash. I cannot post the log as didn't save it but if you think relevant can post tomorrow.
Click to expand...
Click to collapse
I don't believe it sends a file at all, it is flashed/written to the boot partition right away.. or is supposed to - I would consider this your chief complaint... "command not allowed" when trying to fastboot flash a boot.img -- I get a lot of hits googling that.. driver problems/bootloader locked
ham5 said:
I think your really digging way to deep into this...
Click to expand...
Click to collapse
I'd welcome a shorter, simpler path.
ham5 said:
what is the difference between fastboot and flash mode? Ive never heard of this flash mode....
Click to expand...
Click to collapse
Perhaps it is purely a sony thing. If, with the phone powered off, you plug it in holding the volume up button you end up in fastboot mode; if you plug it in with the volume down you end up in flash mode.
Flashmode is used by Emma and by Flashtools. Fastboot is used by the Fastboot utility. I'm unclear what happens under the cover, but they are not interchangeable.
ham5 said:
I don't believe it sends a file at all, it is flashed/written to the boot partition right away.. or is supposed to - I would consider this your chief complaint... "command not allowed" when trying to fastboot flash a boot.img -- I get a lot of hits googling that.. driver problems/bootloader locked
Click to expand...
Click to collapse
As I said, I do not know what happens under the covers, but in fastboot mode when you do the "flash boot" it first says it transmitted a file (shows bytes sent, etc) then it does a "write" command itself and it is that write command that fails.
And therein lies my issue trying to flash the boot image -- the write command fails, and I cannot figure out why.
Drivers: I've tried the latest flashtool, and installed the drivers from there. They do install (with signing verification off), and they do connect and see the phone. Some commands work, but this one does not. Could it be the drivers? Certainly, but I do not know what to try to fix them.
Emma: I hate to keep coming back to this, but I do not understand why Emma says my phone is locked, when it clearly appears not to be. I've both re-unlocked it, confirmed it is unlocked with the service menu. But that it thinks it is locked, and the "write" command failure, makes me wonder if there is an issue either in the phone or windows or drivers that makes it act that way. incidentally I've also tried all this with antivirus/firewalls off with no effect.
Locked: just to confirm, in the service menu it says "Root Status" and "unlockable" as "yes". Not "Yes/no". That means it is currently unlocked, correct?
To your first point, I may be over-complicating it. I would welcome some suggestion of other simpler steps. I've done the same google, and don't see real solutions other than "try better drivers", but most threads seem to point to the flashtools drivers, and I've tried those, as well as installing Emma which (presumably) either used those or loaded its own.
Incidentally if this is more appropriate to the Q&A forum, and a moderator is handy, I would appreciate it moving. I placed it here because this relates mostly to the Flashtools drivers and the process of using fastboot.
I cant say for sure .. CM's dialer does not work with service menu... but you defiantly not worried about root... your looking for the bootloader to be unlocked, not unlockable..
ham5 said:
I cant say for sure .. CM's dialer does not work with service menu... but you defiantly not worried about root... your looking for the bootloader to be unlocked, not unlockable..
Click to expand...
Click to collapse
I've never gotten to CM on this phone so that's moot. I'm doing the service menu from the stock phone. And so far as I can tell the bootloader is unlocked.
I went back to a much older version of Flashtools (0.9.11) that dates from about the time I got the phone, but those drivers do not seem to install on Windows 10 at all.
But I'm not clear whether it is a driver problem, since some fastboot commands work fine.
Just read using emma with lollipop can screw your phone up... in fastboot mode can you 'fastboot getvar version' ?
here is the CM wiki - https://wiki.cyanogenmod.org/w/Install_CM_for_odin - good luck I don't think I can be of any help.
ham5 said:
Just read using emma with lollipop can screw your phone up... in fastboot mode can you 'fastboot getvar version' ?
here is the CM wiki - https://wiki.cyanogenmod.org/w/Install_CM_for_odin - good luck I don't think I can be of any help.
Click to expand...
Click to collapse
Yes, in fastboot mode I can do the getvar version. It says 0.5.
I had read the wiki; as mentioned that is why I was trying to flash boot.img.
As requested here is a fastboot session log:
Code:
U:\AndroidSDK\platform-tools>fastboot getvar version
version: 0.5
finished. total time: 0.002s
U:\AndroidSDK\platform-tools>fastboot flash boot boot.img
sending 'boot' (10668 KB)...
OKAY [ 0.340s]
writing 'boot'...
FAILED (remote: Command not allowed)
finished. total time: 0.340s
U:\AndroidSDK\platform-tools>fastboot flashing get_unlock_ability
...
^C
U:\AndroidSDK\platform-tools>fastboot devices -l
EPxxxxx47K fastboot
U:\AndroidSDK\platform-tools>fastboot devices
EPxxxxx47K fastboot
U:\AndroidSDK\platform-tools>fastboot flash boot boot.img
sending 'boot' (10668 KB)...
OKAY [ 0.340s]
writing 'boot'...
FAILED (remote: Command not allowed)
finished. total time: 0.354s
U:\AndroidSDK\platform-tools>fastboot flash boot boot.img
sending 'boot' (10668 KB)...
OKAY [ 0.340s]
writing 'boot'...
FAILED (remote: Command not allowed)
finished. total time: 0.353s
As you can see some commands work, some do not. Not sure the get_unlock_ability is even supposed to work as it looks like a late comer to fastboot and the phone is old.
Most articles I find posted about "command not allowed" do not seem to get as far as being able to use fastboot at all, but even if it is a driver issue, not sure what I can do about it, these are the latest drivers.
Ok, I've managed to get this to work. I can tell you what I did, but not why, but in case it helped someone else.
The bootloader showed unlocked, but I ran the flashtool option to unlock it again, then WITHOUT REBOOTING I did the fastboot option to flash the boot.img.
It appears that if you reboot (to stock) in between, it does something that at least makes it appear the bootloader is locked (the service menu shows it NOT locked still).
There's another thread here that implies you need to do it multiple times, but I think the issue is not a need to do it more than once, but a need to make sure that (at least a late version stock) does not get a chance to run, as it appears to do something.
I'm now happily on 12.1. Well, sort of happy, I finally noticed it says it doesn't support the 6506 (as opposed to the 6503) so I might not stay long, but at least I worked out what was wrong. Thanks to those who encouraged me to keep looking.
Related
Hi guys,
My phone (GSM yakjuzs) was stuck in bootloop ages ago. Still can't find a solution to this. It was running 4.0.2, unrooted. At first the bootloop went all the way through Google splashscreen. After plenty of mucking around, now it couldn't pass through Google logo.
I tried to flash the phone with 4.0.4 to no available. It kept saying 'Sending bootloader: failed (status read: failed)' or 'Sending bootloader: failed (remote: write fail)'.
I'm wondering if actually the device has to be rooted first in order to flash a phone. How could I root it if it's already stuck in bootloop?
PS: I tried flashing using mskip's tool, wug's etc. The pc detected the phone in fastboot mode. I could see the numbers.
Any help is appreciated. Thanks a lot.
If your bootloader is still locked, you won't be able to flash. Keep in mind that to flash the 4.0.4 update manually using fastboot, you need to unlock the bootloader. Doing so will wipe data/factory reset the phone causing you to lose everything in your internal storage.
Command to unlock the bootloader - fastboot oem unlock
follow link below for instructions on flashing a stock image.
http://forum.xda-developers.com/showthread.php?t=1366806
the guide specifies up to ICL53F, you can actually use the commands he states in the guide but replace the file names with those of the stock IMM76I image directly from google. Location of stock google images (yakju) https://developers.google.com/android/nexus/images
I hope this helps you in some way.
I forgot to say I had already unlocked the bootloader. However it's still unrooted if it does matter.
Thanks for posting the link though.
It shouldn't matter if you're unrooted. If you try the commands in one of the links I sent, it should work.
Okay, will try this later and I'll get back to you. Thanks a lot.
Hi racerklm,
I tried your method and it failed.
When I entered the first command, the result was as follows:
Sending bootloader ......... OKAY
writing bootloader ......... Failed (remote: write fail)
I just don't get what this means. Does anyone know what this is about? Any help is really appreciated.
Are you on a GSM or CDMA gnex? Just to clarify things. If you're on a GSM version the below applies to you.
Did you download the Superboot zip from the first thread i linked you? You need to extract both the r4-galaxynexus-gsm-superboot.zip and the IMM76I.zip you downloaded from google.
Look for the following files inside the IMM76I.zip you downloaded from google and transfer them to the same directory as fastboot.
bootloader-maguro-primela03.img
radio-maguro-i9250xxla2.img
image-yakju-imm76i.zip
Once that's done, do the following commands (taken from thread I linked you).
fastboot-windows flash bootloader bootloader-maguro-primela03.img
fastboot-windows reboot-bootloader
fastboot-windows flash radio radio-maguro-i9250xxla2.img
fastboot-windows reboot-bootloader
fastboot-windows -w update image-yakju-imm76i.zip
if you're on mac or linux just replace "windows" in the commands with "linux" or "mac"
I'm using a GSM model. I did download the superboot zip and the stock google image.zip and extracted all of their files into the same folder.
I have also already typed the first fastboot command. However those words came up again. The very exact words when I tried to fix the device using mskip's and wug's tool. I also tried using two other Windows PC and one Mac PC to no avail. Haven't tried linux since I don't have one.
Your posts are very informative, I thank you a lot for that. However it just didn't work in my case. I've read plenty of similar threads. Their devices could get back to normal. Mine doesn't. I don't know why. Hence, I really wonder what 'remote: write fail' means.
Sorry that there's nothing I can do to help you solve this problem. Have you tried just running the last command? fastboot-windows -w update image-yakju-imm76i.zip? If somehow you can get that flashed, it should boot up normally.
I tried that just now and this came up:
archive does not contain 'boot.sig'
archive does not contain 'recovery.sig'
archive does not contain 'system.sig'
--------------------------------------------
Bootloader Version...: PRIMEKK15
Baseband Version.....: I9250XXKK6
Serial Number........: xxxxxxxxxxxxxxxxx
--------------------------------------------
checking product... OKAY
checking version-bootloader... OKAY
checking version-baseband... OKAY
sending 'boot' (4148 KB)... OKAY
writing 'boot'... FAILED (status read failed (Too many open files in system))
Long time ago I could get into recovery mode and playing around with the device. I wonder if I accidentally unmount the sd? Now I could no longer get into recovery mode. When I select recovery, it would just go to the Google logo with lock image at the bottom.
hmm try flash clockwork recovery and see if that works?
If it's refusing to flash valid files from fastboot, you may just have a hardware defect. Relock the bootloader and if you can still produce the bootloop symptoms, take it for warranty.
I can boot into CWM but not flash it. Is there anything else I could do before sending it in for warranty/fixing?
most likely then it's a hardware defect. best to take it in for warranty work.
wsoelivan said:
I can boot into CWM but not flash it. Is there anything else I could do before sending it in for warranty/fixing?
Click to expand...
Click to collapse
The first thing I would try is to change USB cables.
Next I would try changing USB ports on your PC. Use the ones at the back, not the front.
If that still doesn't work, and you have CWM installed, you could always flash back to stock while booted in CWM (assuming your PC sees your device when booted in CWM).
Crazy as it sounds, you may also want to check your USB cable.
When I worked as Swype's tester, I flashed perhaps hundreds of ROMs across many different devices. In particular I remember having a similar problem with a particular prereleased device, and swapping the USB cable seemingly fixed the problem on more than one occasion. I studied EE in school, and I never could explain why this was a problem or why this would fix it.
Sent from my Galaxy Nexus using XDA
efrant said:
The first thing I would try is to change USB cables.
Next I would try changing USB ports on your PC. Use the ones at the back, not the front.
If that still doesn't work, and you have CWM installed, you could always flash back to stock while booted in CWM (assuming your PC sees your device when booted in CWM).
Click to expand...
Click to collapse
I have already tried 3 different USB cables and all ports in my PC. But, I'm gonna give it one more try for the last time.
I don't have CWM installed, I could only boot it from mskip's tools.
Chinpokomon said:
Crazy as it sounds, you may also want to check your USB cable.
When I worked as Swype's tester, I flashed perhaps hundreds of ROMs across many different devices. In particular I remember having a similar problem with a particular prereleased device, and swapping the USB cable seemingly fixed the problem on more than one occasion. I studied EE in school, and I never could explain why this was a problem or why this would fix it.
Sent from my Galaxy Nexus using XDA
Click to expand...
Click to collapse
At first I was using two Blackberry's USB cables and it didn't work. Then I read in the forum suggesting to use the original cable. I became very hopeful and suddenly grabbed the USB cable came with the phone.
However, as I said before, I might probably try this method one more time. I'm gonna install a linux OS first and try again before sending it in.
On the other hand, I've tried another method of flashing using ODIN mode. Not surprised at all, it still didn't work.
Bootlooping, adb not recognized, softbricked.
So, where do I start?
I bought this device (Nexus 2013 Wi-Fi) in late november and have not updated it since. I attempted to update it today (because I received a notification to do so) to 4.4.2 (I think).
It restarted after the update and I've been stuck in a bootloop at the "4 circles".
I have done the following:
- put the device into the boatloader
- installed the nexus root toolkit and attempted to flash stock + unroot the device to the images: 4.3 (JSS15Q), 4.3 (JSS15R), and (KOT49H)
- this was what my output looked like
Flash Stock + Unroot...
------------------------------------------------------------------
sending 'bootloader' (3911 KB)...
FAILED (remote: Bootloader is locked.)
finished. total time: 0.006s
rebooting into bootloader...
OKAY [ 0.006s]
finished. total time: 0.006s
archive does not contain 'boot.sig'
archive does not contain 'recovery.sig'
archive does not contain 'system.sig'
--------------------------------------------
Bootloader Version...: FLO-04.02
Baseband Version.....: none
Serial Number........: 08e8df8e
--------------------------------------------
checking product...
OKAY [ 0.003s]
checking version-bootloader...
OKAY [ 0.003s]
sending 'boot' (7018 KB)...
FAILED (remote: Bootloader is locked.)
finished. total time: 0.027s
Booting up your freshly flashed stock device...
------------------------------------------------------------------
Wait for your device to finish booting up...
- It may appear to be boot looping; just wait...
- It could take 5-10 minutes; please be patient...
When its finally booted back up, please remember
to re-enable USB debugging if you plan on using
the toolkit to perform other operations.
NOTE: If this process was too quick and your device
is still in bootloader mode, then flashing stock may
have failed or been incomplete. Simply check the
log above: if you notice it skipped steps because it
didn't meet certain requirements, like the bootloader
or baseband version, then consider enabling 'Force Flash'
mode in the toolkits options menu and trying the
'Flash Stock + Unroot' processs again. Cheers.
Press any key to exit...
- And no, I have not tried the force flash.
- I have tried all the drive options and maybe I'm not following the directions properly but that does not seem to work (and it may be the main problem for all I know).
- I'm also not sure if I thoroughly removed all google nexus-related drivers prior to running the nexus root toolkit, so there may be that.
- I've tried some brute-force methods inspired by things I've seen here, as in:
un-packing the factory image files into the platform tools part of the android sdk files and run the following commands in the cmd.exe: fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot erase system
fastboot flash system system.img - My guess is that the problem lies with the fact that I cannot put the device in debugging mode and I cannot have it recognized by adb.
I'm not sure where to go from here and I'm rather frustrated. Please let me know what solutions I should re-try (but perhaps more carefully?) and new ones that I should know of.
I appreciate all your help
Not sure what happened with regards to the update freeze, but we're past that point now. Your next attempt failed because the bootloader is locked, and since you now have no way to enable debugging, you may have no choice other than to try to revert to factory.
Before trying it, issue a: 'fastboot devices' command and make sure your device appears if not you may have to fix your drivers, make sure you get the right image for your device.
https://developers.google.com/android/nexus/images
EDIT: Oh crap, you don't have USB debugging enabled. Try the link anyway, fastboot should still work.
I will give it a go
I will give it a try. That being said, I'm not sure what the right image is. On the basis that I bought it in late november and have not touched it till now, what image should I be using?
rohanjoshi said:
I will give it a try. That being said, I'm not sure what the right image is. On the basis that I bought it in late november and have not touched it till now, what image should I be using?
Click to expand...
Click to collapse
Do you have a camera on the front and back? And is WiFi only? If yes, it is a FLO and you want this one.
Do you have a camera on the front and back? And has LTE and WiFi? If yes, it is a DEB and you want this one.
Based on your initial post, it looks like you have a FLO.
I can confirm its a FLO. I've downloaded the two 4.3 images as well as the 4.4.2 image. I'm not sure which one to use and I'm not sure which one is relevant. I purchased the device in November of 2013 and have not touched it until yesterday.
rohanjoshi said:
I can confirm its a FLO. I've downloaded the two 4.3 images as well as the 4.4.2 image. I'm not sure which one to use and I'm not sure which one is relevant. I purchased the device in November of 2013 and have not touched it until yesterday.
Click to expand...
Click to collapse
If you wanted the latest you'll want the 4.4.2...aka KitKat, that is what it was trying to update you to before this all happened. If you just want to go back to where you were, use the 4.3, but you will get prompted to update again.
Just keep in mind, runing flash-all as-is wipes everything, BUT, you can open the flash-all script in a text editor and remove the -w and it won't wipe userdata.
...also, if I may suggest, strongly, is if/when this works, and your device is backup, I suggest you unlock the bootloader first (since this wipes all data you might as well do it before you put anything on there), then go in and enable debugging. Now you can root, use adb if something happens again, etc.
rohanjoshi said:
I can confirm its a FLO. I've downloaded the two 4.3 images as well as the 4.4.2 image. I'm not sure which one to use and I'm not sure which one is relevant. I purchased the device in November of 2013 and have not touched it until yesterday.
Click to expand...
Click to collapse
hey did u tried doing a factory reset from the stock recovery?
varuntis1993 said:
hey did u tried doing a factory reset from the stock recovery?
Click to expand...
Click to collapse
do you mean to ask if I've gone into the bootloader and tried the 'system recovery' option?
If so, yes, and then i see a dead android with a red triangle, underneath reads, 'no command'.
rohanjoshi said:
do you mean to ask if I've gone into the bootloader and tried the 'system recovery' option?
If so, yes, and then i see a dead android with a red triangle, underneath reads, 'no command'.
Click to expand...
Click to collapse
From there, hold power and press the volume up key, you should get a menu.
http://www.youtube.com/watch?v=VV1ffMCXRg4&t=4m14s
SOLVED
mdamaged said:
From there, hold power and press the volume up key, you should get a menu.
http://www.youtube.com/watch?v=VV1ffMCXRg4&t=4m14s
Click to expand...
Click to collapse
I tried to hard reset it and that didn't seem to get me anywhere, i was still left in a bootloop.
I had asked this same question in a couple other forums and one guy indicated that I should try
Code:
fastboot oem unlock
since the device was locked. That seemed to do the trick. I had previously wiped all drivers off the system and re-installed the drivers. From there, I went through the Nexus Root Toolkit and flashed it with Kit-Kat, everything worked fine. It's currently up and running just fine. I will enable USB Debugging tonight as well.
Thank you for you help! I truly appreciate it.
I think a lot of people who have this problem need to run 'fastboot oem unlock' as their devices are most likely locked like mine was and the NRT will not do anything with the device locked.
rohanjoshi said:
I tried to hard reset it and that didn't seem to get me anywhere, i was still left in a bootloop.
I had asked this same question in a couple other forums and one guy indicated that I should try
Code:
fastboot oem unlock
since the device was locked. That seemed to do the trick. I had previously wiped all drivers off the system and re-installed the drivers. From there, I went through the Nexus Root Toolkit and flashed it with Kit-Kat, everything worked fine. It's currently up and running just fine. I will enable USB Debugging tonight as well.
Thank you for you help! I truly appreciate it.
I think a lot of people who have this problem need to run 'fastboot oem unlock' as their devices are most likely locked like mine was and the NRT will not do anything with the device locked.
Click to expand...
Click to collapse
Actually the very first thing NRT tells you to do is to unlock the bootloader, I assumed you had done this and it failed to unlock, I mentioned the issue in post #2.
Anyways, glad it's sorted.
mdamaged said:
Actually the very first thing NRT tells you to do is to unlock the bootloader, I assumed you had done this and it failed to unlock, I mentioned the issue in post #2.
Anyways, glad it's sorted.
Click to expand...
Click to collapse
No, i understood that. I did not have the correct drivers installed and whenever I ran 'fastbook devices' nothing showed up.
I wiped all google drivers and re-installed one of the recommended packages and everything ran smoothly after that.
I was loading up my Nexus 7 (2013) with the Project L rom and ran into a problem. At the end of the install, I got an error that it could not erase the cache. I can boot into Bootloader but nothing else. It won't boot into recovery or launch the system OS. When I try to launch the system OS, I just get that updating animation that sits there for hours. Fastboot does recognize the device though, but when I try to do a fastboot erase of a partition, it just hangs. Anyone know how I can get out of this?
Try a complete reflash of 4.4.4 or 5 from fastboot.
Sent from my Nexus 7 using Tapatalk
ritchea said:
Try a complete reflash of 4.4.4 or 5 from fastboot.
Sent from my Nexus 7 using Tapatalk
Click to expand...
Click to collapse
I tried the process again. Whether I am trying to erase a partition, re-format a partition, or flash a partition, I get write errors. It is almost as if the rom is write-protected or something. It will copy partition images to whatever partition the bootloader is using, but just won't write them to the proper partitions.
So you are saying when you give the command [fastboot flash system system.img], you get a write error. I'm obviously not an expert, but i thought a new flash would do a complete wipe and create new partitions. If that is not the case (meaning flashing requires that partitions be in place), then you need someone who can tell you if/how to code for partitions or send it in for repair.
Is adb working? If so, you might want to try Wug's toolkit. (see android development).
When you try to start recovery from fastboot, do you get Andy with the red triangle, or what?
Sent from my Nexus 7 using Tapatalk
Check if your Android SDK is up to date
ritchea said:
So you are saying when you give the command [fastboot flash system system.img], you get a write error. I'm obviously not an expert, but i thought a new flash would do a complete wipe and create new partitions. If that is not the case (meaning flashing requires that partitions be in place), then you need someone who can tell you if/how to code for partitions or send it in for repair.
Is adb working? If so, you might want to try Wug's toolkit. (see android development).
When you try to start recovery from fastboot, do you get Andy with the red triangle, or what?
Sent from my Nexus 7 using Tapatalk
Click to expand...
Click to collapse
ADB doesn't find the device any longer, although it did when I started the process. So I am left with using Fastboot. When I try to go into recovery, the screen goes black, then I get the Google logo, and it just sits there. When I try to launch into the system, I get they Andy lying down with the rotating geometric shape in his belly - forever. All that seems to work is the bootloader, and it's not really working. This is the kind of results that I am getting.
Code:
C:\Users\Daniel\Downloads\Nexus 7>fastboot devices
07b8be03 fastboot
C:\Users\Daniel\Downloads\Nexus 7>fastboot flash recovery openrecovery-twrp-2.8.
0.1-flo.img
sending 'recovery' (7878 KB)...
OKAY [ 0.254s]
writing 'recovery'...
FAILED (remote: flash write failure)
finished. total time: 90.015s
C:\Users\Daniel\Downloads\Nexus 7>fastboot flash bootloader bootloader-flo-flo-0
4.04.img
sending 'bootloader' (3911 KB)...
OKAY [ 0.130s]
writing 'bootloader'...
FAILED (remote: flash write failure)
finished. total time: 1.067s
C:\Users\Daniel\Downloads\Nexus 7>
What happens when you do [fastboot reboot recovery]? I wish I understood more about this. First, lying down Andy with the red triangle is the recovery "pre" screen for stock recovery. The fact that system reboots to it may indicate you have no OS. Once you get to that screen, have you tried to get to the next screen (holding vol+/- and power at the same time for a few seconds)? It's tricky and directions say vol+ plus power, but it seems I've always had to press vol in middle. I've read it both ways. Try this first.
[When Stock Recovery starts you will see the Android fallen down screen
To bring up the Recovery menu
Power+VolUp to show recovery menu
Must be this sequence Press/Hold Power, THEN Press/Release VolUp, release Power]
Although I've found many instances of the write write failure you describe, no definitive answers. It does seem that Wug's Toolkit is worth a try. I read the following on his site. I realize it's about unlocking, but the point is you don't need adb to run commands from fastboot.
"WugFresh Mod Carey Parks • 4 days ago
You don't need to be connected via ADB (on with usb-debug enabled) to unlock. You just be connected via FASTBOOT (bootloader mode). Just use the "Unlock" button, and follow the instructions it gives you to MANUALLY boot your device into bootloader mode, then proceed from there. Its fine that your device is messed up.. you just have to get the bootloader unlocked. Once its unlocked you can use "Flash Stock + Unroot" with softbrick/bootloop mode to get your device back to normal. Cheers!"
Using the toolkit from fastboot without adb might help. (In fact, I didn't know this.) He further brought up these commands: You could also try to issue the commands (NRT advanced utilities > launch cmd prompt):
fastboot format system
fastboot format data
fastboot format cache
Of course this clears everything. But from this point, you could try the "Flash Stock+Unroot" step on the first page of the toolkit.
Have you tried to flash a totally different set of files (like the official 4.4.4 decompressed and placed into the fastboot folder)?
It is possible that your SD card has become corrupted. I'm pretty sure you can't issue any mount commands without adb so you can't set the card to write.
For the 15-20 minutes it will take to set up the toolkit and use it (it has to download files for your device, too). it may be worth the effort. Also, Wug is very good about helping. If you can provide him with a copy of what's happening (while using the toolkit), he will try to help. He really understands this stuff. If you're a "toolkit snob" (my term for those who deny usefulness of toolkits), then ignore that suggestion. You already understand how to use fastboot (which is why some say don't use toolkits). My personal experience is that the kit has helped me get out of bootloops a few times.
ritchea said:
What happens when you do [fastboot reboot recovery]? I wish I understood more about this. First, lying down Andy with the red triangle is the recovery "pre" screen for stock recovery. The fact that system reboots to it may indicate you have no OS. Once you get to that screen, have you tried to get to the next screen (holding vol+/- and power at the same time for a few seconds)? It's tricky and directions say vol+ plus power, but it seems I've always had to press vol in middle. I've read it both ways. Try this first.
[When Stock Recovery starts you will see the Android fallen down screen.
Click to expand...
Click to collapse
The Android logo I get when trying to boot into the OS is the animated one with the spinning wire-mesh ball thingy that one generally sees when the OS is updating itself. It just doesn't stop. I'll give the toolkit thing a try, but am about to head out for the day. Won't have a chance until later tonight or tomorrow.
djeaton said:
The Android logo I get when trying to boot into the OS is the animated one with the spinning wire-mesh ball thingy that one generally sees when the OS is updating itself. It just doesn't stop. I'll give the toolkit thing a try, but am about to head out for the day. Won't have a chance until later tonight or tomorrow.
Click to expand...
Click to collapse
Oh, I understand on the Andy. OK. Have a great day.
Kinda weird-- http://forum.xda-developers.com/showthread.php?t=2917463different circumstances but same problem. No one responding there, either.
I don't know why this would work when wug's does not, but some claim it did http://forum.xda-developers.com/showthread.php?t=2381582. You would download, extract, click Dead_Nexus7.bat file and run from fastboot.
Hi everyone,
It seems I was stupid enough to choose a wrong model (MediaPad M1) in TWRP Manager (downloaded from Google Play) while attempting to install TWRP recovery.
This resulted in an infinite bootloop where the "Huawei MediaPad" logo keeps appearing, the tablet restarts and again the same.
I do have access in Recovery and Bootloader mode, but all my attempts did not yield any results. Things I have tried so far:
- Download the Stock ROM from needrom.com (versions B009 and B019), extracted them and loaded the "dload" folder onto an SD card and executed recovery (by pressing both Vol UP/DOWN and starting the tablet). Even though the procedure seems to be perfoming normally, indicator reached successfully 100%, when the tablet restarts after the supposed successful recovery I am still left with the same bootloop.
My SD is a 64GB one, formatted with exFAT if this makes any difference.
- I have tried extracting UPDATE.APP using Huawei Update Extractor (http://forum.xda-developers.com/showthread.php?t=2433454) and tried to push via fastboot all necessary parts (i.e. BOOT.img, RECOVERY.img, SYSTEM.img, etc) but I get the "FAILED (remote: Command not allowed)" error message.
My bootloader was unlocked from the beginning (at least that's what showing when I enter bootleader/rescue mode with red letters - "PHONE UNLOCKED").
Any suggestions would be greatly appreciated! Thanks!
What commands are you using? It is peculiar that fastboot mode fails to flash. It may be that your bootloader is not properly unlocked even though it shows that it is.
If you have a bootloader unlock code for your device, I would suggest that you try explicitly unlocking the bootloader when in fastboot mode (it won't hurt to do this even if your bootloader is already unlocked):
Code:
fastboot oem unlock <YOUR_BOOTLOADER_UNLOCK_CODE>
Then you can verify that the bootloader is actually unlocked by issuing the following command:
Code:
fastboot oem get-bootinfo
If your bootloader is properly unlocked, then the previous command should return output similar to the following:
Code:
(bootloader) unlocked
OKAY [ 0.001s]
finished. total time: 0.002s
At this point, let's try to restore your original BOOT partition and RECOVERY partition.
Now, gather the following partition images from your OEM firmware package:
BOOT.img
RECOVERY.img
SYSTEM.img
USERDATA.img
Only BOOT.img and RECOVERY.img should be needed to solve your issue, but we'll have SYSTEM.img and USERDATA.img ready and available here just in case our efforts fail with just boot and recovery alone.
Now erase and flash boot and recovery as follows (replace /path/to/oem/ in the commands below with the full path to the files you extracted from your OEM firmware):
Code:
fastboot erase recovery
fastboot erase boot
fastboot flash recovery </path/to/oem/RECOVERY.img>
fastboot flash boot </path/to/oem/BOOT.IMG>
fastboot erase cache
fastboot reboot
Hopefully, at this point your bootloop issue is resolved and your ROM boots normally. If not, then read on.
Uh oh, time to flash SYSTEM.img and USERDATA.img too and see if that makes a difference. While we're at it, let's also reflash BOOT.img and RECOVERY.img. Use the following commands (replace /path/to/oem/ in the commands below with the full path to the files you extracted from your OEM firmware):
Code:
fastboot erase recovery
fastboot erase boot
fastboot erase system -w
fastboot flash recovery </path/to/oem/RECOVERY.img>
fastboot flash boot </path/to/oem/BOOT.IMG>
fastboot flash userdata </path/to/oem/USERDATA.IMG>
fastboot flash system </path/to/oem/SYSTEM.IMG>
fastboot erase cache
fastboot reboot
...and hopefully now you're back up and running.
Good luck!
In case you don't have a unlock code and *already* bricked it, you can get the imei from fastboot as well. Simply send the following command from fastboot:
fastboot oem get-psid
Using the imei you can then request an unlock code from huawei on their web site.
Thank you both for replying!
Unfortunately, I don’t have an unlock code. I have contacted Huawei through https://emui.huawei.com/en/plugin.php?id=unlock&mod=detail months ago asking them for an unlock code for the bootloader but I never got a reply. I have even tried again a couple of months ago but they didn’t answer back. It seems there is a limitation on the time entitled to ask for an unlock code – I believe 3 or 6 months if I remember correctly.
I have just tried contacting them again through an e-mail form, let’s hope this time they’ll reply.
Now please allow me to fill you up in some more test/trials I did today:
I issued the “fastboot oem get-bootinfo command” and the result is this:
(bootloader) unlocked
OKAY [ -0.000s]
finished. total time: -0.000s
(Not even a milisecond in replying. This looks a bit suspicious, right?)
But when I try to continue as per your instructions (i.e. issue the command “fastboot erase recovery”) this is what I get:
erasing 'recovery'...
FAILED (remote: Command not allowed)
finished. total time: -0.000s
So I cannot go on using your suggestions
I have also tried to use DC-Unlocker to unlock the bootloader (perhaps wasted money since the bootloader is already unlocked but I just wanted to try). When I bought the credits and opened DC Unlocker Client, the option for Unlock was grayed out, but the option for Factory Reset Protection was selectable. Based on this, I am now suspecting that the tablet has got FRP protection enabled, since I did have a PIN set-up before choosing the wrong model in TWRP manager and brick it. So I tried DC Unlocker’s Factory Reset Protection (paid 15 wasted euros!) but again no luck. This is the log from that attempt:
===================================================================
Before detection Huawei Android phones, enable 'Manufacture' mode:
in dial pad type *#*#2846579#*#* for Qualcomm and Kirin based models, or *#*#14789632#*#* for MTK, then select
'ProjectMenu',
'Background settings',
'USB ports settings',
'Manufacture mode'.
Step by step guide for other Huawei phone unlock:
https://www.dc-unlocker.com/huawei_phones_detect_unlock_tutorials
===================================================================
DC - Unlocker 2 Client 1.00.1322
Detecting phone :
selection :
manufacturer - Huawei phones
model - Auto detect (recommended)
Found Phone : HUAWEI M2-803L
Model : Huawei phone in fastboot mode
Serial NR. : YVF4C15928000296
Firmware : V100R001C00B000
unlocked
Battery state: 3648mv
===================================================================
Factory reset protection Erase start
unknown error (398)
===================================================================
Since I already paid the €15 at DC Unlocker I decided to give a go using their other piece of software, DC Phoenix. This one allowed me to flash pieces of the UPDATE.app package while in fastboot mode, without complaining about locks. It seemed to be flasing normally (I tried flashing all contents of the latest UPDATE.app package) and then (as per DC’s instructions) I tried re-flashing everything using the second option (Upgrade Mode) while in Repair mode (i.e. Vol +/- pressed while powering the tablet).
No success either – Tried various combination of DC Phoenix – even only the files you suggested (BOOT & RECOVERY, BOOT & RECOVERY & USERDATA & SYSTEM).
Is there a way to find out if FRP has been activated through fastboot? Tried Googling it but no usable results came up.
Any other suggestions would really, really be appreciated!
manowar666 said:
Thank you both for replying!
Unfortunately, I don’t have an unlock code. I have contacted Huawei through https://emui.huawei.com/en/plugin.php?id=unlock&mod=detail months ago asking them for an unlock code for the bootloader but I never got a reply. I have even tried again a couple of months ago but they didn’t answer back. It seems there is a limitation on the time entitled to ask for an unlock code – I believe 3 or 6 months if I remember correctly.
I have just tried contacting them again through an e-mail form, let’s hope this time they’ll reply.
Click to expand...
Click to collapse
I did contact Huawei for an unlock code, myself - I sent emails to [email protected] and [email protected] and received a reply back from them the next day. Here is what they said:
Dear User,
Huawei Customer Service is pleased to be at your service.
Apology for any inconvenience.
If you would want to unlock your phone, you should meet the following conditions:
1.Please register your Huawei ID in our official website http://emui.huawei.com/en/ on your phone.
2.Log in your Huawei ID continuously for 14 days.
3.Each Huawei ID should not apply for the unlock code more than twice within 6 months.If you meet the criteria,please go to http://emui.huawei.com/en/ and click the 'download'button to login your Huawei ID other than any other third party ID to apply for the unlock code.Please contact us by mail or local service hotline as following if error message appears.
TEL: http://consumer.huawei.com/en/contact-us/index.htm?tag=hotline
Mail: http://consumer.huawei.com/en/contact-us/index.htm?tag=email
Please submit your mobile model, SN, IMEI/MEID and erro message in your e-mail.We also need to know that your phone is rooted, it can be out of the best working state and some of the functions may not be able to work normally. In additon, the system is vulnerable to be invaded by viruses once your phone is permitted to unlock. For the lack of testing,third party software may not be compatible with your phone. Unlocking will bring unexpected negative impacts and the device will be not normal, and can not be restored, Huawei after-sales service office will not provide warranty service for your rooted phone, and you may bear the cost. So we strongly advise you to think twice.
If you have any other problems, please send your feedback to us. We will be at your service to help you to solve your problems.
Once again thank you for contacting Huawei device.
Best Regards.
Huawei Device Customer Care Team
Click to expand...
Click to collapse
I didn't want to faff around with all that logging in nonsense for two weeks, and also the Huawei bootloader code site seemed to be offline (kept getting "Page not found" errors with the error page in Chinese characters and what was ostensibly an HTTP 600 error, which was why I contacted Huawei support over email), so I just ponied up about $4.25 for 4 dc-unlocker credits (4 euros) and got my bootloader unlock code from the dc-unlocker software. Neat, clean, easy and non-messy.
manowar666 said:
Now please allow me to fill you up in some more test/trials I did today:
I issued the “fastboot oem get-bootinfo command” and the result is this:
(bootloader) unlocked
OKAY [ -0.000s]
finished. total time: -0.000s
(Not even a milisecond in replying. This looks a bit suspicious, right?)
Click to expand...
Click to collapse
Yes, that does seem very odd. I would expect it to take at least some time in userspace (the "total time" field).
manowar666 said:
But when I try to continue as per your instructions (i.e. issue the command “fastboot erase recovery”) this is what I get:
erasing 'recovery'...
FAILED (remote: Command not allowed)
finished. total time: -0.000s
So I cannot go on using your suggestions
I have also tried to use DC-Unlocker to unlock the bootloader (perhaps wasted money since the bootloader is already unlocked but I just wanted to try). When I bought the credits and opened DC Unlocker Client, the option for Unlock was grayed out, but the option for Factory Reset Protection was selectable. Based on this, I am now suspecting that the tablet has got FRP protection enabled, since I did have a PIN set-up before choosing the wrong model in TWRP manager and brick it. So I tried DC Unlocker’s Factory Reset Protection (paid 15 wasted euros!) but again no luck.
Click to expand...
Click to collapse
I find it very peculiar that your bootloader is unlocked but FRP is activated. I think that dc-unlocker does not give you the option to unlock the bootloader because FRP protection is still active - according to all guides, FRP must first be deactivated if you want to unlock the bootloader.
What does your phone say in the bootloader screen for the FRP? You'll find it directly under the "Phone Unlocked" text. It should say either "FRP Locked" in green or "FRP Unlock" in red.
manowar666 said:
Is there a way to find out if FRP has been activated through fastboot? Tried Googling it but no usable results came up.
Any other suggestions would really, really be appreciated!
Click to expand...
Click to collapse
There isn't, directly, but you can try to issue the fastboot command
Code:
fastboot oem frp-erase
although at this point I am not very hopeful that it will work.
FRP is nothing but the developer option to allow an OEM unlock of the phone - it is the option mentioned in this image in the Huawei "Unlock bootloader" guide thread.
Like I said, I find it very peculiar that FRP is enabled but the bootloader is "unlocked". Did you at any point reset the developer options or reflash the stock ROM before you soft-bricked the device? Did you pick up this phone second-hand/used or something?
I think that the root (excuse me, I couldn't resist) of all your problems is that FRP is still enabled, and this is what is causing your flash attempts to fail.
Here is the dc-unlocker guide to repair a bricked Huawei phone even if the bootloader and FRP are locked. If you follow this guide very carefully, maybe it can save you. Since you already seem to have tried "Method 1" of the guide, maybe you can try "Method 2".
Another suggestion I have is that you can contact the dc-unlocker guys for online chat support (when you see that the chat is online). They are very helpful, and since you've thrown so much money at them (be sure to mention that, just in case they don't know), they should be able to do something to help you out. Good luck, and I hope that you can get your phone back online...
I've been faced with all the same issues as the OP for the last 24 hours and thought all was lost. I had been through all the same stuff - every fastboot command and every key combination possible. I'd tried different tools and apps to get some life out of the device but no luck. I had even downloaded the ROM from beast.in.black's thread and extracted it to the SD card but it didn't do anything for me.
Worse still, the tablet was now out of juice. And as soon as I plugged it into the mains, the screen lit up and the all too familiar fastboot screen would stay on, meaning the tablet was barely charging long enough for me to try anything new with adb / fastboot or whatever.
So in trying to get the screen off and charge the tablet, while it was plugged in I held vol up / vol down / power together for 10 seconds. I was hoping this would leave the screen off (I had managed this earlier while plugged into USB) but instead it booted again. So I walked away for a minute, then came back expected to see the fastboot screen but no, it was in the middle of an EMUI software install. Huzzah! I left it to do its thing but at the end, it came up and said install failed and my only option was to press power to reboot. Sigh. So I pressed power and then got another surprise. The Huawei boot logo. The tablet was booting. A few seconds later I'm at the "Choose your regional settings & language" screen in the setup wizard. After trying everything under the sun, it turns out all I needed was the ROM on the SD card and to give the tablet the three-finger-salute while plugged into mains.
Happy days!
I found the Official M2-803L ROM!
For anyone who needs it, I've found an official download (direct from the Huawei China support site) for the M2-803L.
I've posted the ROM details here for anyone who needs this ROM.
Status update for anyone that might be interested: I was able to restore the tablet with the help of DC-Unlocker. I highly recommend them for any unlocking/restoring needs.
More specifically, I contected them via email and they were kind enough to give me credits (since I already paid them) in order to try again with Method 2 as per https://www.dc-unlocker.com/DC-Phoenix-flash-repair-tutorial
Step 2 of this method did not work for me (i.e. flashing in upgrade mode) but I was able to replace this step simply by re-flashing with DC Phoenix in fastboot mode.
After this, my IMEI was zeroed-out (that was a problem since this tablet is 4G-enabled thus I couldn't register on my provider's network) but I was also to fix that by using HCU-Client (had to purchase 8 more credits from DC-Unlocker).
All are working fine now.
Special thanks to @beast.in.black for pointing me towards the right direction!
Surprised that I haven't come across too much regarding this tablet. It's relatively cheap, but has a wonderful screen, with cel data and SD card support. And not a bad resolution. (Not 4K, but ALMOST 2k...) This device seems to be running a SpreadTrun / SPD system under the hood.
Having issues getting it rooted and bootloader unlocked.
First, Rooting via boot.img and Magisk -
I am able to get the boot.img file and have Magisk patch it fine. However, when I go to re-write the boot.img file, fastboot gives me the following:
C:\>fastboot flash boot_a magisk_patched-22100_2U5Ga.img
Warning: skip copying boot_a image avb footer (boot_a partition size: 0, boot_a image size: 67108864).
Sending 'boot_a' (65536 KB) OKAY [ 2.422s]
Writing 'boot_a' FAILED (remote: 'Flashing Lock Flag is locked. Please unlock it first!')
fastboot: error: Command failed
SPD's UpgradeFlash won't let me select JUST to flash the boot file - it forces everything to be flashed, which resets the device. Because of that, when I insert the patched boot.img in, it causes the tablet to bootloop.
Trying to unlock bootloader -
Reading through different methods for SPD devices, I'm running into deadends. With both ADB Debug and OEM Unlock enabled, running the following commands don't work:
C:\>fastboot flashing unlock
FAILED (remote: 'unknown cmd.')
C:\>fastboot oem unlock
FAILED (remote: 'Unlock bootloader fail.')
I thought that perhaps the method of flashing the signature (signature.pim file) was needed. However, following that attempt, the command yields:
C:\>fastboot flashing unlock signature.bin
fastboot: usage: unknown 'flashing' command unlock
(Same error is given for 'unlock_critical' and 'unlock_bootloader'.)
Anyone know of an alternate way to flash JUST the boot.img files to an SPD device?
Quick bump!
One interesting thing I have noticed - every time after I run the second command ('oen unlock'), any command sent AFTER that will hang. As if the tablet's expecting something else.
Any luck? I've also got this tablet, seems like unisoc have different bootloader unlock procedure, read that it needs linux with custom adb tools
I actually unlocked the bootloader on mine several months ago. Details aren't fresh in my mind but I do remember a few things that may help you.
1) You absolutely need the signature file. I got mine by installing an app "spreatrum tools" on the tablet.
2) It only works with a specific version of fastboot.
3) According to my terminal history, the command to unlock could be "fastboot.exe flashing unlock_bootloader signature.bin" or the one posted by OP: "fastboot flashing unlock signature.bin". At least one of these works but I don't remember which since I used them both.
Pretty sure I got both the working version of fastboot (windows version, not linux) and the app here on the forum. Whoever posted those files originally deserves the credits but, again, I don't remember who or where so... Luckily I still have both files on my NAS so I'm attaching them.
Anyway, there, have fun.
So this can also work, nice!
troolie said:
I actually unlocked the bootloader on mine several months ago. Details aren't fresh in my mind but I do remember a few things that may help you.
Anyway, there, have fun.
Click to expand...
Click to collapse
Thanks so much, already unlocked my BL (through modified adb via Linux) but can't proceed to root it, have you rooted yours?
Nope. My plan was to unlock in order to install a custom recovery as I thought there's a good chance the one for iplay40 might work. Turns out I ended up with a brick so I went back to stock.
My immediate concern was to get rid of system apps but adb shell works well enough for that so...
Actually, I'm more interested in running generic GSI if at all possible, considering alldocube is unlikely to ever update the stock rom.
troolie said:
I actually unlocked the bootloader on mine several months ago. Details aren't fresh in my mind but I do remember a few things that may help you.
Click to expand...
Click to collapse
Vvtaewoo12 said:
Any luck? I've also got this tablet, seems like unisoc have different bootloader unlock procedure, read that it needs linux with custom adb tools
Click to expand...
Click to collapse
Sorry for the silence guys, had a death in the family that took me away from playing with this tablet for a while.
Glad you both got it - I actually was able to get in touch with someone AT AlldoCube, and they replied saying that the bootloader IS UNLOCKED in the same fashion that the iPlay40 is. (Which isn't too much of a surprise - the back cover of my kPad actually has the iPlay 40 model number on it. Heh.) I followed the instructions in the iPlay 40 thread exactly (including the one command that's run that the output seems to not be used), and it worked.
Like you both, though, I haven't been able to root - Because of the family issues, I haven't tried in a while, but I remember getting as far as trying to flash a modified Magisk boot.img - at which point, the tablet goes into bootloop. I blieve that we need a signed vbmeta file, though I have no idea yet how to generate/flash that.
I have NOT tried the iPlay40 rooting instructions in one post, and I'm admittedly not even sure that I'm using the Spedtrum flashing applications correctly.
Help me unlock bootloader ipay 40
U have trailer video URL/??
U use Ubuntu linux but do not!!
Taoismixi said:
U use Ubuntu linux but do not!!
Click to expand...
Click to collapse
Wrong thread. This is not about the iPlay 40.