I'm wondering how bad I've messed this up. I have a new LEX727 that had Stock EUI 5.8.21 on it. I enabled developer mode and allowed OEM unlocking in the OS. I then booted into download mode, unlocked the bootloader, and flashed TWRP recovery 3.2.1-1. After that, I couldn't boot into recovery any longer. I tried the process over and over again with different version s or TWRP and I still couldn't boot into recovery.
The next thing I tried is a went into download mode, issued the command fast boot format userdata (my partition was encrypted so I needed to do this) and then fastboot boot <twrp.img> and booted into recovery. In recovery, I mounted the system partition, and then I installed the latest Lineage OS image. I reboot, saw the splash screen, and then nothing.
I rebooted back into download mode and tried to boot with "fastboot boot <twrp.img>" again but now my bootloader is locked again.
So, if you are keeping tally, my bootloader is locked, my recovery won't boot, and I don't have a working operating system. How bad is that? Any way to recover?
Thanks
Cymerej
Fastboot doest work with locked bootloader.
What process did you use to unlock bootloader?
Just make sure you have a 727.
Did you reformat data in twrp?
Sent from my SM-A730F using xda premium
mchlbenner said:
Fastboot doest work with locked bootloader.
What process did you use to unlock bootloader?
Just make sure you have a 727.
Did you reformat data in twrp?
Click to expand...
Click to collapse
Thanks for the response, mchlbenner. Yes, fastboot does work, but it doesn't allow me to flash recovery because the boot loader is locked. It gives me an error message when I try. Do you know how I can use fastboot to restore to factory image?
To unlock the boot loader I followed these steps:
1. Booted into stock Android
2. enabled developer mode (pressed on the build number 7 times)
3. went into the developer options and made sure the USB debugging and allow boot unlock were enabled
4. rebooted into download mode
5. ran the command "fastboot oem unlock-go" which said it was successful
I am positive I have a 727
No, I didn't reformat the data in twrp. I reformatted it in fastboot with the command "fastboot format userdata".
You will have to flash this bootloader.
You have to read how to do this.
You have to reformat data in twrp
https://www.mediafire.com/file/nvsw2fhnt1e2q7d/x727-5.8.019s_bootloader-unlock.zip
Sent from my SM-A730F using xda premium
Its fixed, Thanks for help.
I was able to get my phone up and running again using the instructions in this thread:
https://forum.xda-developers.com/le-pro3/how-to/guide-unbrick-le-pro3-tested-t3622340
Thanks for the help.
-Cymerej
Related
Hello.
Long story short:
I have a OnePlus2, I can boot in Fastboot mode and my PC does recignize the fastboot device.
fastboot oem device-info says that Bootloader is locked and when I try to unlock (fastboot oem unlock) it states "okay" but cannot boot into system because there is none installed. -> Bootloop
I cannot boot into recovery nor install a recovery due to the locked bootloader.
My Question:
Is there a way to unlock the bootloader in fastboot and/or install a boot.img?
I am happy for any help that I get.
Have a good day/night
SoulSnatcher
No, but why you don't have system?
You have stock recovery download official signed full zip and flash it. Recovery.
Also unbrick guide using the one you need Qualcomm drivers
Sent from my ONE A2005 using Tapatalk
Long story short. I had an Axon 7 A2017 B11 which I updated to B13. I was able to unlock the bootloader, root the phone then flash a custom rom Z.A.D.Mix7_v0.3. I was having fun with the phone but I did something very stupid when I realised I could not use Android pay due to unlocked boot loader. Without doing enough research, I went to fastboot and did a fastboot oem lock. The command was successful but I could no longer boot into the system or recovery or fastboot. I tried MiFlash with B07 which was posted in this forum, but it did not work, came back an error of bad format. Then I used axon7tool to flash TWRP 3.0.2 and the boot.img which I extracted from B13. I am now able to boot into TWRP and fastboot. But I still do not have a working system. I tried fastboot oem unlock, it does not let me do it. I flash ZAD Mix7 again but once I flash that it does not boot anymore. I am now really stuck. What should I do to go back to stock then start everything again. Thanks a lot for the help.
I understand your device doesn't boot into system anymore, but can adb on your pc detect it at all? If so, you can try following all steps after "B)" in my tutorial. I think your aboot img and fbop partition are messed up. If you can use adb to replace the files in aboot and fbop with files that allow the fastboot oem unlock command to be executed, it should be unlockable again. After that, custom ROMs should boot.
Stock bootloader
Controllerboy said:
If you can use adb to replace the files in aboot and fbop with files that allow the fastboot oem unlock command to be executed, it should be unlockable again. After that, custom ROMs should boot.
Click to expand...
Click to collapse
I'm having a similar issue. Although my phone boots to stock rom I seem to have messed up my bootloader. I had TWRP and unlocked bootloader. I, similarly, locked the bootloader and things seemed to be fine. After attempting to install Nougat received from OTA I realized my bootloader is corrupted. When I hold the power and volume up the phone seems to just turn off (or go to EDL mode? I'm not sure) I can always just hold power and it'll boot up normally. Is there a way to get the stock bootloader to work and keep it locked?
I also bricked my A7 after relocking my bootloader. I used tenfar's tool to make TWRP my boot.img, then flashed ZTE's stock B20 image. Here's the thread where I found the file links.
From there I updated all the way up to the OTA Nougat, but I suppose you can decide where you want to go after it's unbricked. Hope this helps.
Why are so many people relocking bl? Regardless, always take an ota before locking to ensure you are completely shock.
Stock bootloader
lafester said:
Why are so many people relocking bl? Regardless, always take an ota before locking to ensure you are completely shock.
Click to expand...
Click to collapse
Don't you have to be running a locked bootloader in order to be able to install OTAs?
aabnamak said:
Don't you have to be running a locked bootloader in order to be able to install OTAs?
Click to expand...
Click to collapse
Of course not.
aabnamak said:
Don't you have to be running a locked bootloader in order to be able to install OTAs?
Click to expand...
Click to collapse
No, you do not. I thought that was the case at first as well, but I was mistaken. You do, however, need the stock recovery and an untouched system partition.
My problem is that I don't seem to have a recovery at all. I realized once the ZTE logo pops up I can hold down both volume keys and get to the bootloader. The bootloader is locked but does not display a bootloader version or basedband version. I tried the tenfar tool (axon7root.exe) and now my phone doesn't boot into the system either. I really need help...
Just an update to everyone that helped.
I finally managed to fix it.
I used axon7tool to flash a signed TWRP, so that i can boot into TWRP. The signed TWRP is the only way to make it work. Then I downloaded the A2017 B11 from this thread
https://forum.xda-developers.com/axon-7/development/rom-guide-updates-to-stock-files-via-t3469484
There are two zip files. The boot stack and the rom. Because it is a stock rom, I can boot into the system. The next thing I did was to enable the developer option and turn back on the option to allow OEM unlock.
I went back to TWRP. boot into the fastboot screen. Then I simply typed in 'fastboot oem unlock'.
I went back to TWRP, which says can't read encrypted device. I formated everything. mount the USB then flash the custom rom again.
Hola, phone fixed. Made me sweat for the whole day.
deleted...forgot I had a micro sd card. Flashed stock update from the card and it worked. Phew!
Hi,
my phone is almost brick.. i cannot boot to system.. it stays freeze on zte log. I guess this is happen because my device is lock.. i forget to enable OEM Unlock, and now i i've wipe data and system from the phone, so i can't do it normally, when trying to fastboot oem unlock it says not allowed..
I manage to install twrp 3.0.2 (other don't work...i get black screen) via edl using axon7tool-1.5-linux.
From twrp I flash the stock room but no luck..
so my question is that if it's possible to enable oem unlock from adb? or any other tip to recover my device...
After flashing stock room, using the stock recovery i try to sd update, but i says: "sorry, you can't sdcard upgrade".
My device is the model A2017G
The info in original recovery:
ZTE/P996A04_N/ailsa_ii
7.1.1 / NMF26V/20180209.113940
Thanks for the help!!
Regards,
I came back from LOS 16.0. Flashed A2017G_B10_NOUGAT_FULL_EDL in EDL but there's a warning that my bootloader is locked. I wanted to relock it but the warning prevents me from entering bootloader or fastboot (or maybe they are not even present....). Next I flashed A2017U_FASTBOOT_UNLOCK_EDL in MiFlash but it did not do anything. It flashed OK but I still cannot access fastboot. Should I flash some marshmallow rom? Thanks in advance.
I have the same problem. Cannot enter fastboot mode on Nougat ROM.
Ok I found the way usin Axon 7 Toolkit
1. Set the Android version to 7 using option 13
2. Perform unlock bootloader
Following instruction Axon & Tookit gives you EDL image of the proper fastboot partition giving the possibility to enter fastboot mode
then fasboot oem lock
I wanted to say thanks that works, but apparently my phone is bricked now - it hangs on green ZTE logo. PC recognizes it as DFU. Cannot enter EDL either. I guess I look for some guide how to recover from this situation
Managed to fix that. Somehow I was able to enter fastboot. It said my bootloader was locked so i flashed TWRP and from TWRP using ADB installed stock Nougat rom
ma_ko said:
I wanted to say thanks that works, but apparently my phone is bricked now - it hangs on green ZTE logo. PC recognizes it as DFU. Cannot enter EDL either. I guess I look for some guide how to recover from this situation
Managed to fix that. Somehow I was able to enter fastboot. It said my bootloader was locked so i flashed TWRP and from TWRP using ADB installed stock Nougat rom
Click to expand...
Click to collapse
If you was able flash twrp mens your boolaeder was unlocked?
No there's a TWRP that works on locked bootloader.
ma_ko said:
No there's a TWRP that works on locked bootloader.
Click to expand...
Click to collapse
Seems that TWRP was inatlled before the bootloder was locked again.
Dear all,
My A2017G is still under warranty and I would like to send it back for battery problem.
I have unlocked my bootloader and I'm using LOS.
So I want to go back to full stock and remove bootloader message or relock bootloader.
I follow these steps:
I flash B03 Oreo full EDL.
I boot into stock recovery to format data and wipe all.
I boot the stock system and activate ADB.
Then I flash official TWRP (3.3.0.0). I tried to flash NFound's TWRP 3.2.1.8 but I never succeed to launch it.
I boot into TWRP.
I format data to remove encryption.
And then I follow the raystef66's guide to remove unlock message and activate fastboot.
However, when I want to launch bootloader "adb reboot bootloader", my phone is bricked, stuck in EDL mode and I have to wait full discharge of the battery to flash again B03 Oreo full EDL ...
What am I doing wrong?
Thank in advance for your help.
TTR6214 said:
Dear all,
My A2017G is still under warranty and I would like to send it back for battery problem.
I have unlocked my bootloader and I'm using LOS.
So I want to go back to full stock and remove bootloader message or relock bootloader.
I follow these steps:
I flash B03 Oreo full EDL.
I boot into stock recovery to format data and wipe all.
I boot the stock system and activate ADB.
Then I flash official TWRP (3.3.0.0). I tried to flash NFound's TWRP 3.2.1.8 but I never succeed to launch it.
I boot into TWRP.
I format data to remove encryption.
And then I follow the raystef66's guide to remove unlock message and activate fastboot.
However, when I want to launch bootloader "adb reboot bootloader", my phone is bricked, stuck in EDL mode and I have to wait full discharge of the battery to flash again B03 Oreo full EDL ...
What am I doing wrong?
Thank in advance for your help.
Click to expand...
Click to collapse
Why don't you boot a working system first? Formatting data won't do much, because unless you flash no-dm-verity or Magisk you'll get encryption the moment that you boot to system.
Also, you might be better off by installing stock Nougat instead, because most of the flashables were made for Marshmallow, but sometimes work on Nougat.
Finally I succeeded to relock the bootloader.
I have done this steps:
Flash B10 Nougat full EDL.
Boot into stock recovery, format data and boot normally the system.
Activate ADB and reboot into EDL mode.
Flash NFound's TWRP for Nougat (TWRP_3.2.1-7_axon7-Nougat-MM.img).
Boot into TWRP and format data.
Follow raystef66's guide to remove unlock message and activate fastboot.
At this time, I have access to TWRP and bootloader with fastboot access, but the system doesn't boot.
(Flash only stocksystem Nougat via TWRP), I don't know if it is mandatory.
Still in TWRP, remove dm-verity
At this moment, the stock system boot, I have TWRP recovery and bootloader with fastboot access and no warning screen.
To lock bootloader, boot into bootloader and run "fastboot oem lock"
Start the system, the phone says "erasing ..." but still doesn't boot the system.
Finally flash B10 Nougat full EDL, launch stock recovery and format data.
Now stock system with locked bootloader, ready for RMA