Accessing fastboot on MTCH headunit. - MTCD Android Head Units General

Hi all, I've been following the guide from the Magisk site re: installing it on my currently unrooted headunit. I have confirmed it has a RAMdrive and I have managed to extract and patch boot.img from the payload.img file. I've coped it from my headunit back to my laptop and it's ready to be flashed back across to the boot partition. It also has separate vbmeta and vbmeta_system partitions if that matters.
However the guide (and several others I've since found) says to use the following command once in fastboot mode...
fastboot flash boot /path/to/magisk_patched.img
I've moved my patched image to the root of C: - so I have been using...
fastboot flash boot C:\boot-patched.img
However, upon entering fastboot mode, I don't appear to have ADB connection any more, either thru a regular command window or via WebADB. So when the command is executed it simply says "waiting for any device". I have tried to connect with ADB in the usual manner but get no response.
One thing I've noticed is that when in Fastboot mode, secure boot is enabled, could this possibly be blocking ADB? I'm looking into how to disable this now, unless anyone could let me know please.
Also I'm aware my HU is a MTCH model but I'm not aware of any forum specifically for these yet, apologies if there is and I've managed to miss them.
Many thanks for any assistance.
UPDATE: Sorry forgot to mention that in order to access Developer Options (as the stock ROM has hidden it) I have to enter the code ADBON into the factory settings access menu, then use a 3rd party app to show Dev Options (tapping build number does nothing), from there I have access to the usual items such as USB debugging. However, Dev Options does not seem to persist across reboots so upon reloading if I want ADB connection I have to do all that again. (Hence why I'm trying to get root!)

Related

Tied everything to root swift, cant get past initial fastboot stage

hi all, sorry if this has beeen posted before but its bugging me as i spent literally 4-5 hours lastnight trying to sort it, i havee rooted 4-5 android phones in the past but im just having no luck with this one
i installed adb / fastboot minimal, enabled what needed to be enabled in developer options on the swift, booted the swift into fastboot mode, then when i run adb on my computer, the first command works 'fastboot oem unlock' but after that its constantly saying 'waiting for devices' whenever i try the next phase of commands ie. fastboot -i 0x2970 oem unlock-go etc it just wont detect the device at all in windows on adb, is there any suggestions anyone could throw out there before i end up sending it back and getting an alternative android phone thats easier to root? the only thing i can think off is its a usb driver issue? but i installed the gloogle usb drivers and it picks up the phone for file transfer etc so im not sure if this is the issue. many thanks!
yodjone1 said:
hi all, sorry if this has beeen posted before but its bugging me as i spent literally 4-5 hours lastnight trying to sort it, i havee rooted 4-5 android phones in the past but im just having no luck with this one
i installed adb / fastboot minimal, enabled what needed to be enabled in developer options on the swift, booted the swift into fastboot mode, then when i run adb on my computer, the first command works 'fastboot oem unlock' but after that its constantly saying 'waiting for devices' whenever i try the next phase of commands ie. fastboot -i 0x2970 oem unlock-go etc it just wont detect the device at all in windows on adb, is there any suggestions anyone could throw out there before i end up sending it back and getting an alternative android phone thats easier to root? the only thing i can think off is its a usb driver issue? but i installed the gloogle usb drivers and it picks up the phone for file transfer etc so im not sure if this is the issue. many thanks!
Click to expand...
Click to collapse
Hi,
I had the same issue. When that happens, do commands without the -i 0x2970 bit. So for example:
fastboot -i 0x2970 erase recovery
becomes:
fastboot erase recovery
Hope this helps
-Jev
I tried this but it still says 'waiting for any device' My initial command worked for fastboot oem unlock, but then I just couldnt do the following commands, and as a result whenever i tried to install a custom recovery / rom it gave me the error along the lines of 'unable to verify....'
edit: when i missed out the -i part, then said its already unlocked. however i still am not able to install supersu or the recovery as it still gives me the error 'signature verification failed'
yodjone1 said:
I tried this but it still says 'waiting for any device' My initial command worked for fastboot oem unlock, but then I just couldnt do the following commands, and as a result whenever i tried to install a custom recovery / rom it gave me the error along the lines of 'unable to verify....'
edit: when i missed out the -i part, then said its already unlocked. however i still am not able to install supersu or the recovery as it still gives me the error 'signature verification failed'
Click to expand...
Click to collapse
Hi,
OK, what recovery are you trying to install? I would recommend TWRP 3.0.2 by Beroid (in the development section) because it's easy to use and it works. Get the image and put it in your adb folder is. Make sure you are in fastboot. Then run commands
- fastboot erase recovery
- fastboot flash recovery (name of file).img
Disconnect the device from your computer. Then remove the battery. Then replace the battery and press VOLUME DOWN and POWER to rebbot in to recovery mode to verify the installation.
You should now be in the recovery. You can flash custom roms and supersu within this new recovery.
Hope this helps
-Jev

Stuck in Bootloader - adb no devices - can't boot into system or recovery

Hey guys I'm stuck in bootloader on my taimen and I hope someone can help me.
I tried to update my OS from latest Android 9 factory image to Android 10 via bootloader, as I always do.
After executing the command
Code:
./flash-all.sh
I got a message that said that I should download and install the latest platform-tools from googles dev site, what I did. And I think that was my mistake. I downloaded the updated tools and replaced the old ones, while beeing in bootloader on my phone and connected to my MacBook.
Now I have a problem that whenever I try to boot in recovery or system I get the dead android Icon with 'No commands'. That wouldnt be a problem for me, if I could install a new .img to boot into system and start again. But unfortunately I cant find my device via adb. The List of attached devices is always empty.
What I have tried so far to solve this issue:
- tried 2 different cables and all USB ports I have - no success
- restarted adb several times - no success
- added vendor Id to /adb_usb.ini file like described in this post https://stackoverflow.com/a/7136003 - no success
Does anyone have a suggestion what I could try next? Any help is appreciated
Download Homebrew. And install adb in terminal, and try if that works . https://brew.sh/index_sv .
https://stackoverflow.com/questions/31374085/installing-adb-on-macos/32314718#32314718
I'm no expert but I thought that you should use fastboot commands from your MacBook terminal if you are in the bootloader and not adb commands. But I guess the fastboot commands don't work either since you wouldn't have a problem then!
Tips on getting to recovery mode from 'no command' screen:
https://youtu.be/P1RGEle3qN0
Hey guys thanls for your suggestions.
Fortunately I was able to resolve my issue. The problem was that I was on the wrong partition.
After setting the partition back to a with
Code:
fastboot --set-active=a
my device id appeared in the list of attached devices
Code:
fastboot devices
So I was able to reflash the flash-all.sh and now I'm on Android 10.

[GUIDE] Root and unbrick steps for ASUS ZenPad C 7.0 (P10Z - Z170C)

Hi all! It took me a lot of time to finally being able to root this tablet. It's old, slow and practically unusable, but with some tricks it can be made much, much better. I'm going to explain what you need to do to root this tablet, and in case of brick (which happened to me many, many times) how to unbrick it. I even got to a point where I could not even boot into recovery mode, and only fastboot was working, that was scary, but I managed to get out. Every single file I will use will be bundled in a ZIP you can download, and I'll try to make sure this link stays up, because there's nothing more frustrating than wanting to make these things in the future only to find out the link is dead, along with all your hopes. Before we begin, a little disclaimer:
Code:
#You, and only you are responsible for everything that you do or happens to your tablet.
#If you screw up, I have a number of backups to help you recover, but if that's not enough don't point a finger at me.
#I will not be babysitting anybody to help restore their tablet or recover lost data.
#This process WILL wipe all of your data, do a backup before beggining.
#YOU HAVE BEEN WARNED!
1. ENABLING USB DEBUGGING
This is a very basic step, but it's needed if you want to even begin to do this. You'll need to go to "Settings -> About Phone". There, look for a line that says "Compilation Number" (or something like that) and tap it multiple times. You will see a message pop up saying "You are now a developer" (I wish it was that easy). Go back to the settings screen, you will see a new option appeared called "USB Debugging". Enable it, and make sure "Developer Options" are enabled too at the very top of the screen. Now, connect the tablet to your computer. You will see a message pop up asking for permission, tap "Always allow from this computer" and press "Allow".
That's it for this step.
2. SETTING UP ADB TOOLS AND MAKING SURE THEY WORK
Now that we have USB debugging enabled, and we have allowed our PC to access the tablet, we can begin setting up ADB. The required files are attached in the zip.
Extract the "platform-tools" folder and move it somewhere nice. Then open it, hold shift and right click in a white space and select the option "Open command window here". CMD will pop up, now type:
Code:
adb devices
It will probably say something about a server followed by a list of attached devices. If you see a serial number there, then great! ADB is working as it should. If not, make sure the tablet is connected, that USB Debugging is on, and if all else fails, try with another cable.
Now for the juicy part.
3. UNLOCKING THE BOOTLOADER
We will have to unlock the bootloader if we want to do anything here. Here's what to do. Type:
Code:
adb reboot fastboot
Wait until the tablet reboots into fastboot. Once there type:
Code:
fastboot oem unlock
fastboot oem unlock confirm
This should unlock the bootloader.
NOTE: This method of unlocking is reported to not work anymore, but I listed it anyway just in case, as it doesn't hurt to try. If this is not working for you, don't panic, it's normal, use the following code instead:
Code:
fastboot oem asus-go
fastboot oem asus-go confirm
This should work, and the bootloader should be unlocked now.
4. INSTALLING THE REQUIRED FIRMWARE
Now, your tablet may or may not have the required firmware for the procedure, but just in case we will flash one that's sure to work. If you followed along, you should be in fastboot mode right now. Type:
Code:
fastboot reboot
Your tablet should boot as normal, without any changes (unless the first bootloader unlock method worked for you, in which case it probably wiped all of your data). Now we can access ADB once again, so type:
Code:
adb reboot recovery
The tablet will reboot into recovery mode and you should see an image of wasted android with an open belly (if you don't see this it doesn't matter). You should see a list of options with blue text, you must use the volume keys to navigate this menu. If you don't see any options, press any volume key and they should appear. If instead of getting into recovery mode, the tablet just turned off, then go to the "Fixing recovery" section.
In this menu, you must select "Wipe data/factory reset". This will, obviously, wipe all of your data. Once that finishes, select the "Install update through ADB" option. Once that's done, make sure the "updated_firmware.zip" file is in the same directory as the "adb.exe" file, then type:
Code:
adb sideload updated_firmware.zip
This will install the firmware, it will take about 20 mins. Once finished, reboot the device. You may think it got bricked at this point, fear not, the first boot really takes this long (about 10 mins).
Once everything is done, the device should boot up and everything should be exactly as it was when you took it out of the box, meaning, it doesn't even remember your wifi password. Do a quick (but proper) set up and enable USB Debugging again, make sure to allow the PC again (and check the "always allow" box). Also, scroll down a bit more in the developer options section and look for one that says "Verify apps installed through USB" or something of that kind. Make sure it's unchecked. Now, we gotta install root.
5. ROOTING
The all holy root, finally here. Type this into the terminal:
Code:
adb reboot fastboot
You should be familiar with this process by now. Once in fastboot mode, type:
Code:
fastboot boot root.img
Once finished, reboot. You should boot up as a rooted user, hooray! Only one final step, we gotta give ourselves some means to control this new power, that's where the SuperSU app comes into play.
6. INSTALLING SUPERSU
Apparently, not every single SuperSU apk file works... but lucky for you, I managed to scout and bundle one that does, so use that one. Make sure the apk file is in the same folder as "adb.exe" (as with all of the previous files) and type:
Code:
adb install supersu-2-82.apk
Leave it a few mins, and you should see a "success!" message when it's finished. Open the SuperSU app and it will tell you that you need to update the binaries. Say yes to that, and when asked wether to do a "Normal" update or "TWRP" update, select normal. It should be successful and prompt you to reboot, do so.
That's about it, you now have root access in the ASUS ZenPad C 7.0.
NOTE: Every single attempt I made to make the SuperSU app a system app resulted in the app crashing and I needed to reinstall it again, do as you please.
Why would you even want to do this you might ask? Well, I personally used this to make a few tweaks with Kernel Auditor and L Speed, two apps that will let you customize the performance of the machine to its maximum... sacrificing battery of course. You can search online for the best configuration for you for these apps. With the right tweaks, it transforms from **** to usable, and you need root for all of this.
As a quick note, you might notice that the SuperSU pop up that prompts you wether to grant or deny root access to an app is delayed, that's just how life is with this machine, it's slow. As a tip, when an app is trying to acquire root access, go back to the home screen and open the SuperSU app, then go back to the app you were trying to give it access to, it should appear quicked that way. Sometimes it's so slow that the app says I don't have root, only to have the pop up appear 10 seconds later. Now... to a final chapter.
7. UNBRICKING
This would be the end of the story if nothing went wrong, you have a rooted tablet and you can now do whatever you want with it, but that's not how life is. **** happens, things can go wrong, and when they do, you better have a backup plan. I don't know how to get back your ex, but I know how you can unbrick your tablet if that should happen. Follow these steps if you want to recover this machine...
Code:
#This process will wipe all data, but you shouldn't care about that since you can't access it anyway.
So, if the tablet doesn't turn on and gets stuck at the boot up screen, what can we do? Well, let it sit at the boot up screen for a few mins, and then type in the terminal:
Code:
adb devices
If it's recognized, then type:
Code:
adb reboot recovery
If it's not recognized, press the power button and the volume down key until the tablet turns off. Once that happens, press the power button and the volume down key, when the logo appears, let go of the power button and keep the volume down key pressed, that should boot the tablet into recovery mode. If you got into recovery mode, skip to 7.2
7.1 FIXING RECOVERY MODE
Sometimes, (it happened to me), recovery mode is broken.... it just doesn't appear, no matter what you do you can't get into it. To fix this, we gotta flash it again. We gotta enter fastboot mode. One option is to boot up the device until it gets stucked and wait a few mins, then adb should be able to recognize it and you type:
Code:
adb reboot fastboot
If that's not the case, turn the tablet off and press power and volume up, that should get you to fastboot. Once there type:
Code:
fastboot devices
And the tablet should appear there, if it doesn't... well it better do. I don't really know what to do if it doesn't appear there, but there shouldn't be a reason for it not to. I guess you can try to enter fastboot once again, with the tabler connected from the beggining or something like that, let's just assume it does, and if it doesn't then I'm sorry to tell you that's homework you will have to do.
Once here, we must format the cache and the data partition, for that type the following:
Code:
fastboot format cache
fastboot format userdata
Now, we need to get the recovery files, grab them from the zip I gave you. The files in question are "recovery.bin" and "vrl.bin". We will start with vrl. Once the two formats are finished, type:
Code:
fastboot flash vrl vrl.bin
Followed by:
Code:
fastboot flash recovery recovery.bin
Once that's done, press the power button and volume down keys until the tablet turns off. Then, press them again until the logo appears, and when that happens let go of the power button, that should get you (finally) into recovery.
7.2 UNBRICKING (FOR REAL THIS TIME)
Well, now that everybody is on the same page, and we could get to recovery mode, it's time to repeat some steps really... Follow the procedure from step 4 onwards (from the part that tells you to go to recovery). So, wipe data and apply that damn zip with sideload, the tablet should work now.
That's all I have to offer guys. I'm not a developer, I'm just a guy with a bunch of free time on his hands, so I was able to gather all of this information and (most importantly) files so you can root and fix this god damn tablet. Until the next one!
FINAL NOTE: In the files I included, there's a TWRP.img file. This is the TWRP custom recovery. As far as I know, this version should work with this tablet, but I was unable to flash it and make it work. IF YOU WANT TO TRY THIS DO SO AT YOUR OWN RISK, IT'S HIGHLY PROBABLE THAT THIS WILL RESULT IN BRICKING YOUR TABLET AND BREAKING THE STOCK RECOVERY, IN WICH CASE YOU WILL NEED TO FOLLOW THE STEPS STATED IN THIS GUIDE.
I couldn't upload the files as an attachment directly... sorry.
The "updated_firmware.zip" file is added as a separate download because it's a bigger file, and I prefer to let people decide if they even want it in the first place.
updated_firmware.zip
Everything else
None of the 8 drivers from Intel or Google detect the device in fastboot mode. I tried fixing this tablet years ago and had the fastboot drivers. As far as I know I have the same ones. These all loaded with no problem, but I could never get ADB Device to detect it in fastboot mode
Google: Android ADB Interface | Android Bootloader Interface | Android Composite ADB Interface
Intel: Android ADB Interface | Android Bootloader Interface | Intel AndroidADB Interface | Intel Android Bootloader Interface | Intel Android Composite ADB Interface
neghvar said:
None of the 8 drivers from Intel or Google detect the device in fastboot mode. I tried fixing this tablet years ago and had the fastboot drivers. As far as I know I have the same ones. These all loaded with no problem, but I could never get ADB Device to detect it in fastboot mode
Google: Android ADB Interface | Android Bootloader Interface | Android Composite ADB Interface
Intel: Android ADB Interface | Android Bootloader Interface | Intel AndroidADB Interface | Intel Android Bootloader Interface | Intel Android Composite ADB Interface
Click to expand...
Click to collapse
Make sure you enable usb debugging, no driver will work without that enabled.
tralph3 said:
Make sure you enable usb debugging, no driver will work without that enabled.
Click to expand...
Click to collapse
Not possible. This hangs during boot up or I can enter fast boot mode. It has been like this for years. Basically a soft brick. I tried to fix this years ago as stated above, but having seen this latest post about it, I decided to try again. But this time, I cannot find a fastboot driver that shows the device as attached when I run ADB devices
neghvar said:
Not possible. This hangs during boot up or I can enter fast boot mode. It has been like this for years. Basically a soft brick. I tried to fix this years ago as stated above, but having seen this latest post about it, I decided to try again. But this time, I cannot find a fastboot driver that shows the device as attached when I run ADB devices
Click to expand...
Click to collapse
Be aware that when in fastboot mode, adb devices never lists anything, you must use "fastboot devices"
tralph3 said:
Be aware that when in fastboot mode, adb devices never lists anything, you must use "fastboot devices"
Click to expand...
Click to collapse
Yep! That's where I was messing up. Thank you.
And the tablet is now working. Thank you very much.
One last question though. I tried to install the twrp.img file included in the pack
fastboot flash recovery TWRP.img
Here is what I got
Sending 'recovery' (26588 KB) (bootloader) Ready to receive: 0x019f7000 size of data
OKAY [ 0.741s]
Writing 'recovery' (bootloader) Flashing partition: recovery
FAILED (remote: ' Download image size is large than partition size')
fastboot: error: Command failed
How do I get around this if the image file is too large?
neghvar said:
Yep! That's where I was messing up. Thank you.
And the tablet is now working. Thank you very much.
One last question though. I tried to install the twrp.img file included in the pack
fastboot flash recovery TWRP.img
Here is what I got
Sending 'recovery' (26588 KB) (bootloader) Ready to receive: 0x019f7000 size of data
OKAY [ 0.741s]
Writing 'recovery' (bootloader) Flashing partition: recovery
FAILED (remote: ' Download image size is large than partition size')
fastboot: error: Command failed
How do I get around this if the image file is too large?
Click to expand...
Click to collapse
Yeah I never could get around it either. I never could install a custom recovery on this tablet, it just wasn't made for it. But hey, root is cool.
Work?
Still working?
jerryspring said:
Still working?
Click to expand...
Click to collapse
Why wouldn't it? This tablet ain't gonna change. Everything should work no problem.
Hi, any custom rom for this device to make it useful ?
It is in my drawer for more than 2 years and I just do not know what with it
Also how to play with settings in root mode so I can make it faster ?
Hey folks,
I recently followed this guide and a couple of issues.
First, I had expected all my data to be gone, which is fine. But it wasn't. I seemed to have gotten all the way through without it being reformatted, and this makes me suspect I never really achieved all the goals.
One thing I should note, in recovery boot, I had to use the volume button to select a source. No big deal, but it had not worked until I guessed I needed to do that.
Oh, and another thing is I had to install the driver package, and then after, once it was rebooted into fastboot, manually guide the device manager to select from list.
It seems after complete shutdown and then a fresh bootup, my SuperSU software was gone. So, is this only a tethered root boot? Is there a completely untethered?
After rebooting again, it seems my device will not complete booting, but I will give it some more time. I may have bricked it, though I have no idea how lol. All I did was enable USB debugging again and issued the reboot command.
I know this is an old guide, and probably long forgotten by most participants, but I recently got one of these tablets online, open box but new or like new, for around $20, and I would like to get it rooted because otherwise, it is extremely sluggish and the battery drains very fast. I read online it is google play services at fault, but I do not know for sure.
Anyway, if anyone has any updated info or alternative method to achieve full root access untethered, please advise. Unless this guide is that, in which case I just need to try again. Just out of curiosity, what is the TWRP.img for?

Bootloader problems

Ive had my LG G7 for about a year now. I managed to unlock the bootloader without any problems and used magisk ok.
I just came to upgrade the firmware without any problems. I enabled dev and usb debug but the 'Enable oem unlock' button is greyed out and displays "bootloader already unlocked" ok so not a problem - that is until I come to access the bootloader again.
Here is the message:
Welcome to Fastboot mode: Please check "Enable OEM unlock" in developer options
adb commands no longer work at this point as connection is lost. Only choice is manually reboot or switch off.
WTF now what. Im unable to root or restore the bootloader. So even though its unlocked and displays the bootloader unlocked message when booting - Fastboot does not see it and it still wants me to 'Enable oem unlock' but its greyed out.
Any suggestions please anyone
You can use QFIL to restore laf_a & laf_b. Then flash full rom (Refurbish) in Download mode.
ps: the reason is you do not flash full rom after unlock bootloader in order to tell to the machine that you are in the illegal mode kakaka.
Thanks for your reply nttuan. I just about gave up hope. Im totally paranoid without root. No decent firewall, cant freeze garbage etc.
Being relatively unsure, would you mind going over the QFIL method with me.
Thanks
chadandchew said:
Thanks for your reply nttuan. I just about gave up hope. Im totally paranoid without root. No decent firewall
Click to expand...
Click to collapse
Never used QFIL before. Where do I get the firehose elf file from. I noticed a couple of elf files in the extracted folder, is it one of these.
Do I have to create any xml files and do I have to rename any of the kdz extracted files?
Some posts are a bit old and for other models.
Instead of flash the boot_a from magisk_patched image, you can use command
fastboot boot magisk_patched.img
and use the LGUP to reflash the firmware.
If you look at the photo above I LOSE ALL ADB commands after adb reboot bootloader.
fastboot boot magisk_patched.img or any other command just displays "Waiting For any Device" in CMD window.
This is my problem because the bootloader is already unlocked and oem greyed out - it is asking me to "Enable OEM Unlock"
I am wanting to either root the phone or restore bootloader to locked. Sorry for any confusion
type fastboot devices and show me the result.
maybe you do not have correct fastboot driver
It did say waiting for any device but now its gone from bad to worse. I followed this guide Here and now all I get is fastboot screen, see photo. If I now try fastboot devices then fastboot flash boot_a magisk_patched.img it shows error which does not look good actually , photo 2. Cant get download mode. If I try to get it by holding volume button and inserting usb lead I get this nasty screen, photo 3. I think that some of the partitions may have been overwitten. . Stupid move on my part.
Forgot to mention - EDL is still accessable
Ive managed to sort the above problem
QFIL flashed only the following 6 files :
abl_a and abl_b
laf_a and laf_b
boot_a and boot_b
Phone rebooted perfectly after this.
Thanks for your advice

Recovering data on a DEAD Redmi Note 8 PRO

Hello,
I hope this is the right section for this post.
I've been using a Note 8 Pro with zero issues until one week ago when I accidentally dropped the phone in the water.
After a few seconds submerged the display turned off and I felt an intense heat coming from the zone of the battery.
Having no chance to recover the phone (tried with Isopropyl Alcohol too) I decided to open it and manually dry/clean each component, having seen the situation inside gave me the phone is dead but I still want to recover some pictures/data from it.
Before opening the open Minitool was not detecting any device on my Windows Laptop, after cleaning each component Minitool is instead detecting the phone via USB, but I still can't extract any data because the "Usb debugging" option is not tuned on (and no the device is not rooted).
Is there any option to extract data from the phone? There's a way to turn on USB Debugging via ADB on a non-rooted phone?
Thanks,
Andrea.
how about trying your luck with a service ? most of the time they do have access to special programs, which have a better functionality than adb.
Thanks for the hint, but I am not happy with the idea of someone playing with my data
1. Try reboot phone to recovery
2. Connect it to your computer (download Platform-tools)
3. In the folder with Platform-tools open cmd
4. In cmd - adb shell
5. cd storage/emulated/0
6. ls
7. Now, using the commands, drag files from your phone to your PC
Thanks for your hint.
No luck so far, I think because the phone is not in recovery mode.
I can hear the phone starting up several times (hear the jingle) so I think it's in a reboot loop and I don't know how to boot it into recovery mode wo a working display (tried with power/volume up combination with no luck).
From the windows taskbar I can see that the phone is recognized for a few seconds before it restarts.
EDIT: trying to switch the phone on with the combination "power/volume down" brings to a kind of stable state and I can now see the phone in the windows taskbar recognized as a generic "android device". Still no luck when trying to access the phone as there's no device in windows and no device obtained through "adb devices" command.
EDIT1: I think that the phone is in "FASTBOOT" mode. If I type "fastboot devices" I can see it detected but still can't access it.
Any idea? Should I give up?
If it's popping up and down you need something to keep track.
You can try my UsbLog.exe (in the sig), it just sits there and shows what devices appear (if they have a driver) and disappear.
Try these to see if anything is working:
Code:
C:\>fastboot devices
C:\>fastboot getvar all
C:\>fastboot oem device-info
Yes it's popping up and down when it's booted in recovery mode whilst is stably connected when in fastboot mode but in this case I can't access the internal memory of the device.
I didn't get the purpose of logging the devices connecting to the USB as I can see the device connected for a while and correctly recognized as Redmi Note 8 pro but as it keeps popping out windows have no time to show it's folder.
As for the code you wrote: i will try asap but already tried with "fastboot devices" and I get the phone correctly listed but still can't access its memory as told.
Renate said:
If it's popping up and down you need something to keep track.
You can try my UsbLog.exe (in the sig), it just sits there and shows what devices appear (if they have a driver) and disappear.
Try these to see if anything is working:
Code:
C:\>fastboot devices
C:\>fastboot getvar all
C:\>fastboot oem device-info
Click to expand...
Click to collapse
After rebooting the phone in fastboot mode I can see it recognized as a generic android device from windows (still can't access the storage folder of the device).
fastboot devices----> I get the device listed with a series of numbers/letters
fastboot getvar all---> I get a list of information on token/token version/partition type and size/baseband/bootloader etc.
fastboot oem device-info----> FAILED (remote: unknown command)
So I think it's clear that the device is in Fastboot mode and instead is in a boot loop when started in revocery mode.
Is there a way to extract data from fastboot mode?
Thanks,
Andrea.
If you put a custom recovery on it in the first place you can try reflashing recovery from fastboot.
Fastboot doesn't allow you to read anything.
oem device-info is obviously an oem command that might not be on any device.
You've got a Mediatek processor. That has some low level equivalent to Qualcomm EDL, but I have no experience with that.
If you can get there you can download the user data partition, but it's probably encrypted. Also no experience with that.
The easiest is if you can get the system to mount/decrypt the partition.
You've tried the normal system too?
Is this A/B? Have you tried changing slots?
How much time does it stay up in recovery? Do you have ADB? Maybe try:
Code:
# stop recovery
Does that prevent it from looping?
So I should try to flash a custom recovery like TWRP for example?
What you mean with "normal system too"?
Changing slots you mean changing usb port?
It stays in recovery less than one second so I can't give any command via ADB.
EDIT: cant' flash any custom recovery because the bootloader is locked.
If I Try to unlock the bootloader via MiUnlock I get a warning saying that all data will be erased.
Any idea on how to unlock the bootloader wo wiping all the data?
Sephiroth79 said:
So I should try to flash a custom recovery like TWRP for example?
What you mean with "normal system too"?
Changing slots you mean changing usb port?
It stays in recovery less than one second so I can't give any command via ADB.
EDIT: cant' flash any custom recovery because the bootloader is locked.
If I Try to unlock the bootloader via MiUnlock I get a warning saying that all data will be erased.
Any idea on how to unlock the bootloader wo wiping all the data?
Click to expand...
Click to collapse
There is a mediatek bootloader unlocked you just have to boot in Brom mode and it'll unlock it please follow this
PS: press all buttons
MysticNoOb said:
There is a mediatek bootloader unlocked you just have to boot in Brom mode and it'll unlock it please follow this
PS: press all buttons
Click to expand...
Click to collapse
My bootloader is unlocked!
Thank you very much.
Now I am going to try to flash a custom recovery mode via fastboot in order to access the internal memory of the phone.
EDIT: I've just flashed twrp-3.6.2_9-0-begonia.img but still can't boot into recovery mode.
Any hint on how to extract data from the system now?
You really want to boot the normal system because that's the best way to get decrypted data.
I realized that you don't have ADB enabled there.
You should look at B. Kerler's https://github.com/bkerler/mtkclient/
If you can pull the boot image off your device then I might be able to fix it so that you have ADB.
You'd have to flash it back in fastboot or mtkclient.
You can also pull a copy of userdata off the device with mtkclient.
As far as booting into recovery, there's a way.
Here's how, if you don't have A/B (that is you flashed TWRP into recovery and not recovery_a or recovery_b)
then you can fastboot flash a special file into the misc partition and it wil boot into recovery next reboot.
To return things to normal you have to flash the empty file to the misc partition.
Code:
C:\>fastboot flash misc misc-rec.img
C:\>fastboot reboot
Only do this if you don't have partitions that end in _a or _b
I really don't know if I have partitions A and B as you mentioned and I think there's no way to check actually.
I confirm I don't have "USB Debugging" active on the phone.
So if I understand correctly I should do the following:
- Flash misc-reg.img via Fastboot
- Boot into recovery just rebooting the system after flashing the above file;
- use MTKclient to dump userdata or boot image to enable ADB on (I will need help with mtkclient I suppose).
Is it correct?
EDIT: flashed TWRP first and misc-rec then rebooted via Fastboot/Reboot but nothing happens.
Sephiroth79 said:
My bootloader is unlocked!
Thank you very much.
Now I am going to try to flash a custom recovery mode via fastboot in order to access the internal memory of the phone.
EDIT: I've just flashed twrp-3.6.2_9-0-begonia.img but still can't boot into recovery mode.
Any hint on how to extract data from the system now?
Click to expand...
Click to collapse
TWRP cant boot because you used wrong one. Search again in that unlock bootloader channel and use suitable one.
Kirasu2080 said:
TWRP cant boot because you used wrong one. Search again in that unlock bootloader channel and use suitable one.
Click to expand...
Click to collapse
Hmmm, I am almost sure that the TWRP I've flashed was listed under Redmi Note 8 pro page. Can you please indicate more precisely where should I sera
EDIT: I think I've downloaded and flashed the correct TWRP file.
@Renate can you please detail your method so I can try to extract data from the phone?
Sephiroth79 said:
Hmmm, I am almost sure that the TWRP I've flashed was listed under Redmi Note 8 pro page. Can you please indicate more precisely where should I sera
EDIT: I think I've downloaded and flashed the correct TWRP file.
@Renate can you please detail your method so I can try to extract data from the phone?
Click to expand...
Click to collapse
1/Yeah it's official. You "flashed correct TWRP." Downgrade to Miui Android 9 (_9 in it's name) to boot into that TWRP and lose your data.
2/In unlock bootloader video above, search other video in his channel playlist and find TWRP video suitable for your Miui version.
Kirasu2080 said:
1/Yeah it's official. You "flashed correct TWRP." Downgrade to Miui Android 9 (_9 in it's name) to boot into that TWRP and lose your data.
2/In unlock bootloader video above, search other video in his channel playlist and find TWRP video suitable for your Miui version.
Click to expand...
Click to collapse
Can't find the right video, can you kindly send me a link (I am on the latest Miui version and I am in Europe)?
In all the videos I've seen on his page he is using the device to install TWRP etc.
I think I just need the correct TWRP version for my MIUI release and then I'll flash TWRP and misc-reg.img. Is it right?
Sephiroth79 said:
Can't find the right video, can you kindly send me a link (I am on the latest Miui version and I am in Europe)?
In all the videos I've seen on his page he is using the device to install TWRP etc.
I think I just need the correct TWRP version for my MIUI release and then I'll flash TWRP and misc-reg.img. Is it right?
Click to expand...
Click to collapse
Use brp 3.5.2 v3.1 or V3.6 to decrypt Miui 12.5

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