Hate to start a new thread, but I don't see what I am running into .
My Nexus 5x is unable to boot past the animation (normally it would ask for my pattern, then boot into the system). I can access the bootloader and I can access TWRP.
But when I try adb commands like adb devices I get no response.
I just use this to sideload the new OTA from google which worked just fine so I know the sdk is setup correctly on this computer (rebooted etc).
With access to the bootloader and even TRWP (3.0.2-2) any clue as to where to go from here?
If I try to use adb sideload in advanced in TWRP, I can't talk to the phone (fastboot command fail)...
Phone Bootloader is: BHZ11g
The version of Nexus should be NRD91N 7.0
Seems I have some access on my phone, but cannot send commands to it via computer.
**Update** while at the bootloader (fastboot mode) I can see response when I use
fastboot devices
00b14a7d39589285 fastboot
Okay, I was able to recover from this by sideloading again the new OTA from google. The phone then rebooted but was wiped.
Will work from there
Related
This is a followup to this thread.
I got some help at androidcentral.com and now have Fastboot driver installed. I don't have access to ADB mode or the main Android OS. What can I do now to get my phone back to working. My phone can also enter Download mode if that's useful.
I can enter Recovery from Fastboot but then what do I do?
Edit:
Run this command in ADB.
adb backup -apk -noshared -nosystem -all -f C:\backup.ab
Your phone will ask for a password...
Don't put one in.
Once it's finished...
It will say backup complete.
Or your phone might just boot straight up.
Then navigate to recovery.
And factory reset.
Does your phone now boot?
(If not, stop here, and hit me again)
GOOD!
Now get back in fastboot and run:
adb restore C:\backup.ab
This will give you your applications back.
This MIGHT brick you again...but I doubt it.
If so...simply factory reset.
Thanks for the response.
Can I use ADB from recovery mode because I don't have access to the main OS and It was my understanding that you access ADB from the main OS?
If so, I'm using GNex TOOLKIT V5.6. Would I need to boot to CWM Recovery to use ADB or is the stock recovery ok?
I tried using the command in Fastboot and I get the error "adb: unable to connect for backup"
In GNex TOOLKIT at the top is says:
FASTBOOT MODE
List of devices attached
(the phones serial) fastboot
ADB MODE
List of devices attached
(blank space)
Click to expand...
Click to collapse
When i try "adb devices" in the command prompt, I also get "List of devices attached" with a blank line under it.
OK, I gave up on trying to access my data and attempted to do a restore with the toolkit. I had to unlock the bootloader as the first step and after that the system would boot again.
It would be nice if I could have figured out how to reflash the stock bootloader as a first step but I couldn't figure hot if you can or how.
Anyway, I should have unlocked it from day one. If i had, I would have has access to ADB from CWM recovery and would have been able to backup my stuff and access files even with it in the unbootable state it was in.
I guess not unlocking the bootloader was a mistake I need to learn from.
Jubakuba, thanks for trying to help me out.
Hi all.
After OTA upgrade to android 6 of unlocked unrooted nexus 7 2013 WiFi i decided to unlock and install twrp.
I used adb and fastboot to flash version 2.8.7.
It went smooth but after reboot to recovery, twrp shell returns "can't mount *" for all partitions. And the device is bootlooping into this state (unless I boot into bootloader).
The worst part is that my pc wont recognise the tablet when connected. Adb devices returns an empty list. So i cant even flash stock recovery or do anything uing adb/fastboot.
HELP!!!!
[solved] falshed factory image manually using fastboot
It seems fastboot recognized the device while adb/pc couldn't.
I downloaded Android 6 factory image from google and flashed-all that.
Just updating in case some other noob who doesn't fully understand adb/fastboot relations.
Hi everyone,
I´ve been trying to install twrp recovery in my Huawei Ascend P6 via fastboot. I followed this "techglen adb and fastboot guide"
I already installed everything needed for adb conection.
So I connect my phone in MTP mode and use "adb devices" and my device appears normally, but the problem happens when I reboot into Bootloader/Fastboot mode and use "Fastboot devices" it appears a device conected but with a bunch of "?????" and a smiley face at the end like this:
C:\Fastboot>adb devices
List of devices attached
123456789 device --------> bunch of numbers appear normally
C:\Fastboot>adb reboot bootloader --------> Phone restarts into bootloader mode (shows huawei ascend logo)
C:\Fastboot>fastboot devices
????????_?_???_?<??????? fastboot ----------> WTF (this is exactly what appears)
I would like to know if there's something wrong with my phone
Should I proceed and flash the custom recovery?
I have stock android 4.4.2 (rooted with kingroot) and stock recovery.
I am a total noob at this so I need your help :crying: I dont want to do anything stupid. (If already did let me know lol)
I have the same issue. Problem is that phone is bricked, so I can only enter in recovery (official, unrooted, unlocked) and fastboot mode.
Have you managed to solve or have some hint?
I have experienced a inconsistency while using minimal adb and fastboot. While device not showing i could send command and the phone would respond. After going into bootloader and while my device wasn't shown in the list i could flash twrp without much trouble, helped me go back from being stuck on bootanimation. used the command fastboot flash recovery xxxx.img (where xxx is the name recovery name). If you can get into boot loader try fastboot reboot bootloader and if the phone responds you might be in the same situation i was.
Always remember: Messing with recoveries bootloaders and boot images might make your phone unusable so do it at your own risk
Have you actually tried to flash twrp? Did you put the img file of twrp to the minimal adb and fastboot folder? If so, try the commands 'fastboot flash recovery recovery_twrp.img(<-- use the name of twrp file here, so not the exact name wrote here) and reboot. My phone is a bunch of question marks as well and it flashed twrp just perfectly (I got it frome here: http://forum.xda-developers.com/showthread.php?t=2632542)
HI everyone,
I updated "successfully" from Kitkat to 5.0.2 on my rooted (stock ROM) Nexus 7 second gen.
Unfortunately, when I tried to upgrade to 5.1 everything seem to be normal until the device rebooted and it went through the "update process". 3/4 the way through, the green droid went on his back and the "ERROR" message appeared.
I wiped the cache partition but that doesn't help. I tried to download the update in safe mode, but no success. I also find it odd that each time I reboot my device, I get a message from Android that it is "updating my apps".
If I didn't have any apps and a lot of data on my Nexus, I would wipe the device clean but I'd rather avoid this, if at all possible.
Is there a way to upgrade to 5.1 or reinstall 5.0.2 without losing everything?
Thanks
Michael Carleone said:
Is there a way to upgrade to 5.1 or reinstall 5.0.2 without losing everything?
Click to expand...
Click to collapse
No problem. As you rooted it before then presumably it is unlocked and equipped with custom recovery, so all you have to do is:
boot TWRP
connect PC
transfer data and APKs to PC
flash OS
If you don't have TWRP installed, then boot it like this fastboot boot twrp-3.0.2-0-flo.img
k23m said:
No problem. As you rooted it before then presumably it is unlocked and equipped with custom recovery, so all you have to do is:
boot TWRP
connect PC
transfer data and APKs to PC
flash OS
If you don't have TWRP installed, then boot it like this fastboot boot twrp-3.0.2-0-flo.img
Click to expand...
Click to collapse
Hi,
Thanks for the reply. I rooted with Kingroot. I don't believe I have a custom recovery. The bootloader is locked as shown when I boot into recovery mode.
I want to avoid transferring my data and APK files to my PC.
Should I assume there is no way of reinstalling the OS without wiping out the device?Also, there is no link in the above quote: fastboot boot twrp-3.0.2-0-flo.img
Since I got no other replies, I went and restored to factory image. I do have another question. I hope I get a better response there: http://forum.xda-developers.com/nex...a/nexus-7-2013-wifi-root-marshmallow-t3515072
Thanks for the reply.
Can we compare using fastboot flashing TWRP vs Nexus Root Tool Kit: http://www.wugfresh.com/nrt/? I ended up using this utility instead because it was pretty much one click and it didn't require command lines and for whatever reason, I found instructions using fastboot a bit confusing. Which method is better or has more advantages? I left my bootloader unlocked.
Incidentally, I think there was something wrong with my Nexus image. As a result, I did use Google's instructions on how to flash etc. the OEM image. Instructions weren't ideal but I managed to figure things out: https://developers.google.com/android/images
The instructions are here which I assume would be similar if I wanted to fastboot TWRP?
To flash a system image:
Download the appropriate system image for your device below, then unzip it to a safe directory.
Connect your device to your computer over USB.
Start the device in fastboot mode with one of the following methods:
Using the adb tool: With the device powered on, execute:
adb reboot bootloader
Using a key combo: Turn the device off, then turn it on and immediately hold down the relevant key combination for your device. For example, to put a Nexus 5 ("hammerhead") into fastboot mode, press and hold Volume Up + Volume Down + Power as the device begins booting up.
If necessary, unlock the device's bootloader by running:
fastboot flashing unlock
or, for older devices, run:
fastboot oem unlock
The target device will show you a confirmation screen. (This erases all data on the target device.)
Open a terminal and navigate to the unzipped system image directory.
Execute the flash-all script. This script installs the necessary bootloader, baseband firmware(s), and operating system.
Once the script finishes, your device reboots. You should now lock the bootloader for security:
Start the device in fastboot mode again, as described above.
Execute:
fastboot flashing lock
or, for older devices, run:
fastboot oem lock
Locking bootloader will wipe the data on some devices. After locking the bootloader, if you want to flash the device again, you must run fastboot oem unlock again, which will wipe the data.
Click to expand...
Click to collapse
Also, I could've sworn that when I rooted KitKat on my Nexus, my data wasn't wiped out. I don't recall doing anything to the bootloader. I can't recall which method I used, but I know for certain I didn't use the Nexus Root Toolkit. I should've recorded my steps when I rooted.
i rooted my nexus 7 using towel root on kitkat .. i unrooted using supersu... and ota untill marhsmallow with out a problem never use kingroot as its so un stable.
I've been trying to flash TWRP recovery to my rooted LG G3 D855 (running 4.4.2 KitKat). I used the "Bump" method (thread) since I don't have an unlocked bootloader.
I tried the ADB method in that thread, I tried the Flashify method, and I tried the Official TWRP App. Each time, the recovery flashed correctly. But when I attempted to reboot into recovery (using the method in the linked thread, or in the case of the apps, they prompted me to reboot into recovery), my phone didn't bring up TWRP recovery or even the stock recovery. It just brings up "fastboot mode started". It's not stuck though, it boots normally when I pull the battery and power on.
I also separately tried rebooting it into fastboot mode with it plugged into my computer. When I entered "adb devices" into the command prompt, the device came up. Then I rebooted it into fastboot mode and entered "fastboot devices" - then nothing came up. I entered some other fastboot commands and it said "< waiting for device >". So it appears I can't issue normal fastboot commands either.
Any thoughts on how I can succesfully flash TWRP? Thanks.
i have installed my TWRP via this app -- https://ulozto.sk/!lisJevpDG1oS/recovery-d722l-apk
try hope itll help you
Well, somehow you failed to install it. Upgrade to LP (preferably v21C) and try this