Database Users

Axon 7 A2017G from Lineage OS go back to Stock and Lock Bootloader without Problems

1.) You must have a full ZIP from ZTE
2.) Flash back the Original Recovery from the Original ZIP e.g. B08 B10 with ADB Fastboot command ( You must ticked OEM unlock on and USB debugging on in Developer Setting ) in Lineage.
2.1) push Power and tick restart in Bootloader.
2.2) go to Minimal ADB and Fastboot and type fastboot flash recovery recovery.img.
2.3) After this push with the Volume down recovery ,tick power.
OK! You can see the ORIGINALRecovery from ZTE.
3.) You must put a SD Card in Phone with the Original Update.zip
4.) Go in recovery and tick Update from SD card. Search the Update.zip and press Power.
5.) Wait until the Flash Process is finished.
6.) Tick Factory reset with Volume up/down push Power wait.
7.) Tick format Cache with Volume up / down push Power wait.
8.) Push Power to start your Phone with the Original Stock.
9.) After this you go to Settings / Build Number and Tick that seven Times to activate Developer Options, go back to setting and tick Developer Options ,here you must tick the OEM unlocking and USB debugging.
10.) Open Command window on PC and type "fastboot reboot bootloader" the phone shut down and restart in bootloader mode.
11.) in the Comand window you type" Fastboot oem lock" the Phone reboot and the bootloaer is locked. All your Data is lost in this Process!!![COLOR="Red"][/COLOR]
Voila all is done!! Original AXON 7 with Stock Rom .
I have test this with my Axon 7 Model A2017G and i have no Problem.
Sorry for my bad English.

Thanks for writing this out. Will be useful in case I need to switch back in the future
Where do you get the stock rom zip file though? zteusa.com somewhere?

spacemanvt said:
Thanks for writing this out. Will be useful in case I need to switch back in the future
Where do you get the stock rom zip file though? zteusa.com somewhere?
Click to expand...
Click to collapse
There is a global site where you can get the file. http://www.ztedevice.com/support/detail?id=C3BAC27838C4497C80C05EE008527885
Sent from my ZTE A2017G using XDA-Developers Legacy app

Hello,
I recovered my old stock recovery and when trying to apply update from sd card, it gives me this error: "Couldn´t mount /sdcard. installation aborted"
What can I do?
Edit: Solved by formatting the SD card

What is the ADB fastboot command to flash stock recovery?

JP_93 said:
What is the ADB fastboot command to flash stock recovery?
Click to expand...
Click to collapse
fastboot flash recovery "stock Recovery"

Flash the Original recovery.img from your Update.zip!!
JP_93 said:
What is the ADB fastboot command to flash stock recovery?
Click to expand...
Click to collapse
open Update.zip with e.g Winrar and unpacking recovery.img to the ADB directory. OK?!
Then open a Command Window and Type : fatboot flash recovery recovery.img . Wait.
Shutdown your Phone . Restart Phone wit push Power and Volume up.
tick with the Volume down botem update from SD card.

julk13 said:
fastboot flash recovery "stock Recovery"
Click to expand...
Click to collapse
Thanks!
tester2017 said:
open Update.zip with e.g Winrar and unpacking recovery.img to the ADB directory. OK?!
Then open a Command Window and Type : fatboot flash recovery recovery.img . Wait.
Shutdown your Phone . Restart Phone wit push Power and Volume up.
tick with the Volume down botem update from SD card.
Click to expand...
Click to collapse
Thanks for the help, I will try now

10.) Open Command window on PC and type "fastboot reboot bootloader" the phone shut down and restart in bootloader mode.
Click to expand...
Click to collapse
You made a mistake there as you have to enter "adb reboot bootloader" instead of fastboot. Other than that, it works perfectly. Thank you.

I can't get my bootloader locked. Under dev options, "OEM Unlocking" it grayed out.

idigg said:
I can't get my bootloader locked. Under dev options, "OEM Unlocking" it grayed out.
Click to expand...
Click to collapse
Did you find a solution to this? I'm running into the same problem with OEM unlocking being grayed out. I returned to stock just fine, but my problem is booting into the bootloader. Every time I try, it just goes to the "your device cannot be checked for corruption and will reboot in 5 seconds" screen. During this screen and during the screen that comes up you press the volume keys for the options menu, the fastboot oem lock command does not seem to work. Fastboot devices doesn't show any devices listed either

spearman792 said:
Did you find a solution to this? I'm running into the same problem with OEM unlocking being grayed out. I returned to stock just fine, but my problem is booting into the bootloader. Every time I try, it just goes to the "your device cannot be checked for corruption and will reboot in 5 seconds" screen. During this screen and during the screen that comes up you press the volume keys for the options menu, the fastboot oem lock command does not seem to work. Fastboot devices doesn't show any devices listed either
Click to expand...
Click to collapse
Seconded, I'm having the very same problem. Strange thing is, I cannot boot into booloader. I can boot into recovery, I can boot to system but whan I try to boot into bootloader via adb reboot bootloader, the phone just boots into system. If I try Power/Vol-Down, I will eventually land in FTM mode.
Anybody any clue?
SOLVED: After using the Windows based Axon7Toolkit which used Miflash to restore fastboot, I was able to boot into bootloader and also re-lock it.

robertaramar said:
Seconded, I'm having the very same problem. Strange thing is, I cannot boot into booloader. I can boot into recovery, I can boot to system but whan I try to boot into bootloader via adb reboot bootloader, the phone just boots into system. If I try Power/Vol-Down, I will eventually land in FTM mode.
Anybody any clue?
SOLVED: After using the Windows based Axon7Toolkit which used Miflash to restore fastboot, I was able to boot into bootloader and also re-lock it.
Click to expand...
Click to collapse
You couldn't boot into bootloader because there was no bootloader mode. As soon as you update to a recent Nougat build (or an upcoming one) via official zips, your aboot.img will be changed and you won't have bootloader mode anymore. Axon7toolkit relies on fastboot, so it flashes a package through MiFlash that gets you fastboot support.
Jus sayin

Thanks for the clarification.
Is there an aboot.img I can flash e.g. via axon7tool so I can enable fastboot again?
Would that be counted as a warranty void by ZTE?

robertaramar said:
Thanks for the clarification.
Is there an aboot.img I can flash e.g. via axon7tool so I can enable fastboot again?
Would that be counted as a warranty void by ZTE?
Click to expand...
Click to collapse
You can use the A2017U_FASTBOOT_UNLOCK_EDL from 4pda guys with MiFlash. Doesn't matter if you have a G, use this one
Actually axon7toolkit seems to flash that every time it does something related to fastboot. And after you lock it, you can install an official update zip (the latest one for example) and you'll get your phone totally stock, bootloader mode will be blocked.

flash twrp don't overwrite stock recovery

today, i flash Los 13 from Los 14. I tried flash twrp by tool,cmd fastboot but recovery is stock. i tried flash MIUI 7.5.4 and i can boot into TWRP 1 time. And now, i dont flash twrp (twrp dont ovewrite stock recovery). i boot into recovery but it's stuck logo Mi 3,4 times and reboot nomal
can anyone help me flash twrp ?
thank

kirianti94 said:
today, i flash Los 13 from Los 14. I tried flash twrp by tool,cmd fastboot but recovery is stock. i tried flash MIUI 7.5.4 and i can boot into TWRP 1 time. And now, i dont flash twrp (twrp dont ovewrite stock recovery). i boot into recovery but it's stuck logo Mi 3,4 times and reboot nomal
can anyone help me flash twrp ?
thank
Click to expand...
Click to collapse
1.- Boot in fastboot mode (power and vol- buttons until the FASTBOOT logo shows up). Connect the phone with USB cable.
2.- Using Windows file explorer, go into the TWRP installer folder, there press and hold the shift key, and right clic the folder. Then click "open command line here".
3.- In the cmd window that opens, write "fastboot devices". Your phone's serial number and the word "fastboot" will appear. If not, the device is not being detected and you need to install the adequate driver. Look in google.
4.- Write "fastboot flash recovery [the name of the TWRP file inside the folder including the .img extension]". Press enter. You will see the output messages in the window, you must not see any error messages.
6.- After flashing the recovery without errors, DON'T REBOOT OR TURN OFF THE PHONE. THIS WILL ERASE TWRP AND INSTALL STOCK RECOVERY AGAIN.
7.- write "fasbtoot boot recovery [the name of the TWRP file inside the folder including the .img extension]". The phone will boot into TWRP
8.- Inside TWRP go to Advanced > Disable DM-verity
9.- Now you can flash custom roms and stuff. To boot into recovery mode power off the phone, press vol+, vol- and power buttons for 3 seconds, then release buttons and wait.
If none of the above works, maybe your bootloader got re-locked after flashing some MIUI ROM and that's why you can't flash TWRP or another ROM.

If the bootloader gets re-locked? We have to ask the permission again? R directly v can unlock using unlock tool? Is der any chances to relock bootloader? By how? Thank u...

thank for help.i flash miui 8.1.1.0 first, fastboot no re-locked ( I checked my status develop option and MI unlocker ). i flash twrp by flour_mo, it dont work but when i flash twrp-caffe 3.0.1 by fedosis ( LOS 13 ) it work. And i can boot into recovery.

moralesnery said:
1.- Boot in fastboot mode (power and vol- buttons until the FASTBOOT logo shows up). Connect the phone with USB cable.
2.- Using Windows file explorer, go into the TWRP installer folder, there press and hold the shift key, and right clic the folder. Then click "open command line here".
3.- In the cmd window that opens, write "fastboot devices". Your phone's serial number and the word "fastboot" will appear. If not, the device is not being detected and you need to install the adequate driver. Look in google.
4.- Write "fastboot flash recovery [the name of the TWRP file inside the folder including the .img extension]". Press enter. You will see the output messages in the window, you must not see any error messages.
6.- After flashing the recovery without errors, DON'T REBOOT OR TURN OFF THE PHONE. THIS WILL ERASE TWRP AND INSTALL STOCK RECOVERY AGAIN.
7.- write "fasbtoot boot recovery [the name of the TWRP file inside the folder including the .img extension]". The phone will boot into TWRP
8.- Inside TWRP go to Advanced > Disable DM-verity
9.- Now you can flash custom roms and stuff. To boot into recovery mode power off the phone, press vol+, vol- and power buttons for 3 seconds, then release buttons and wait.
If none of the above works, maybe your bootloader got re-locked after flashing some MIUI ROM and that's why you can't flash TWRP or another ROM.
Click to expand...
Click to collapse
when I flash twrp.img but it dont overwrite strock recovery ( fastboot was unlocked)

kirianti94 said:
when I flash twrp.img but it dont overwrite strock recovery ( fastboot was unlocked)
Click to expand...
Click to collapse
What is shown on the cmd window? Is there any error on the phone's screen?
Could you provide a screenshot at least?

Need help, bricked my 3s

Was supposed to flash CM13 Rom. I did a full wipe including system via TWRP.
Before flashing I decided to reboot into recovery, but it didn't. Only gets stuck in the MI logo now. Can't boot into recovery anymore.
I can go into Fastboot mode. Tried flashing twrp via ADB but whenever i type 'adb devices' in command prompt it says device is offline.
Tried to enter EDL via ADB in fastboot mode, it gets stuck at 'waiting for device'.
When plugged in PC, it gets detected as USB ADB interface
Bootloader was unlocked prior, was on xioami.eu ROM before this. I have TWRP system backup of last ROM installed.
Hoping someone can point me in the right direction on what to do next. Very much appreciated, thank you.

Hi Supdow,
I was facing with the same issue and I also thought I bricked my phone... No worries. To solve it is very easy, just unlock your bootloader again with Mi UnlockTool. Than you have access to your recovery again.
Good luck!

Boesila said:
Hi Supdow,
I was facing with the same issue and I also thought I bricked my phone... No worries. To solve it is very easy, just unlock your bootloader again with Mi UnlockTool. Than you have access to your recovery again.
Good luck!
Click to expand...
Click to collapse
Do I have to apply to unlock the bootloader again like the first time?

Boesila said:
Hi Supdow,
I was facing with the same issue and I also thought I bricked my phone... No worries. To solve it is very easy, just unlock your bootloader again with Mi UnlockTool. Than you have access to your recovery again.
Good luck!
Click to expand...
Click to collapse
Was able to unlock bootloader again, but I still can't access recovery. I may have forgotten how to exactly do this since the last time I did it. What do i have to do after unlocking bootloader? I tried flashing TWRP via fastboot but it only gives me an error.

So you have a few options
1. Hold volume+ & - and power (if you have twrp)
2. Take fedosis twrp 3.1 and installer, put twrp 3.1 into extracted installer folder, then shift+right click on installer folder, open cmd, then type
fastboot flash recovery twrp_name.img
fastboot boot twrp_name.img (or do step 1)
3. Just flash dev/stable with miflash (recommendation: go into fastboot, then like step 2 go into cmd and type fastboot oem edl then flash mi rom)
Hope this helps

bekcicandrej said:
So you have a few options
1. Hold volume+ & - and power (if you have twrp)
2. Take fedosis twrp 3.1 and installer, put twrp 3.1 into extracted installer folder, then shift+right click on installer folder, open cmd, then type
fastboot flash recovery twrp_name.img
fastboot boot twrp_name.img (or do step 1)
3. Just flash dev/stable with miflash (recommendation: go into fastboot, then like step 2 go into cmd and type fastboot oem edl then flash mi rom)
Hope this helps
Click to expand...
Click to collapse
Thank you, finally on CM13 fedosis!

Nokia 6.1 plus Stuck on TWRP Splash screen. PLEASE HELP!!

Hello everyone,
I have recently unlocked the bootloader on my Nokia 6.1 plus, and rooted it. I then went ahead and installed TWRP ( App install method - found in the twrp website ). However after I rebooted my phone has been stuck on the TWRP splash screen , I Tried going to download mode , and that just got me back to the twrp splash screen. I turned off the phone and powered it on again , same result . Whatever I do it just keeps going back to the TWRP splash screen .. What is even worse is that my device can not be recognized by my pc while stuck on the splash screen , thus I can not use ADB or Fastboot ...
I am feeling really hopeless and stuck , Help would be much appreciated!! Thanks

Now, dissemble the device and enter edl mode
Sent from my Nokia 6.1 using Tapatalk

MaxTurner771 said:
Hello everyone,
I have recently unlocked the bootloader on my Nokia 6.1 plus, and rooted it. I then went ahead and installed TWRP ( App install method - found in the twrp website ). However after I rebooted my phone has been stuck on the TWRP splash screen , I Tried going to download mode , and that just got me back to the twrp splash screen. I turned off the phone and powered it on again , same result . Whatever I do it just keeps going back to the TWRP splash screen .. What is even worse is that my device can not be recognized by my pc while stuck on the splash screen , thus I can not use ADB or Fastboot ...
I am feeling really hopeless and stuck , Help would be much appreciated!! Thanks
Click to expand...
Click to collapse
You shouldn't have installed TWRP on a A/B device let alone install it via the app. It's okay, We're here to help.
If you have OSTLA in your PC, Just open it up and load all files and select to flash the stock ROM. Select Normal Download/Erase User Data options and if the option to Chech AP status is enabled, Disable it. Select on start or the option to flash stock ROM.
Power off your phone completely. If you can't, Then press the volume+ button and power button. Once the screen goes off, Immediately connect phone to PC.
Phone should now reboot into download mode and stock rom should start flashing. Then it's just a matter of waiting for it to flash and reboot.

CarbonGTR said:
You shouldn't have installed TWRP on a A/B device let alone install it via the app. It's okay, We're here to help.
If you have OSTLA in your PC, Just open it up and load all files and select to flash the stock ROM. Select Normal Download/Erase User Data options and if the option to Chech AP status is enabled, Disable it. Select on start or the option to flash stock ROM.
Power off your phone completely. If you can't, Then press the volume+ button and power button. Once the screen goes off, Immediately connect phone to PC.
Phone should now reboot into download mode and stock rom should start flashing. Then it's just a matter of waiting for it to flash and reboot.
Click to expand...
Click to collapse
I had a problem in that my device would never be recognized by my pc even when i finally manage to put in download mode, However after many days trying I was finally able to do it , and to use OSTL.... so thank you!!
I am wondering now how I will do the thing i wanted from the start which is to flash a kernel if i shouldn't use twrp?

MaxTurner771 said:
I had a problem in that my device would never be recognized by my pc even when i finally manage to put in download mode, However after many days trying I was finally able to do it , and to use OSTL.... so thank you!!
I am wondering now how I will do the thing i wanted from the start which is to flash a kernel if i shouldn't use twrp?
Click to expand...
Click to collapse
So to my understanding what you want to achieve is flash a custom kernel on stock rom. And after you messed up your stock recovery by installing twrp, if you have flashed stock rom using ostla then follow these steps.
First without tampering anything finish an ongoing/pending ota/sp update cause after you install custom kernel you phone won't be able to install OTAs. The last sp is of june so install that.
Now coming to installing the kernel-
*Place your twrp and kernel zip file into your adb folder*
1. Setup usb debugging and connect your device normally to your pc, check if the device is communicating with pc type in "adb devices" and allow on your phone for authorisation.
It should reply with your serial on cmd window.
2. Type in "adb reboot bootloader" that should put your device in download mode.
3. Type in "fastboot boot twrp.img" (replace twrp.img with whatever your twrp image file name is)
4. Go to advanced and select adb sideload, swipe to start.
5. Now move to your cmd window and type in "adb sideload kernel.zip" (replace kernel.zip with whatever your kernel zip file name is)
Wait for the process to finish
Now press home go to wipe>advanced wipe select dalvik cache and swipe to wipe
again press home and select reboot, select system
Now final important step
6. don't swipe, select "do not install twrp"

D-Mi said:
So to my understanding what you want to achieve is flash a custom kernel on stock rom. And after you messed up your stock recovery by installing twrp, if you have flashed stock rom using ostla then follow these steps.
First without tampering anything finish an ongoing/pending ota/sp update cause after you install custom kernel you phone won't be able to install OTAs. The last sp is of june so install that.
Now coming to installing the kernel-
*Place your twrp and kernel zip file into your adb folder*
1. Setup usb debugging and connect your device normally to your pc, check if the device is communicating with pc type in "adb devices" and allow on your phone for authorisation.
It should reply with your serial on cmd window.
2. Type in "adb reboot bootloader" that should put your device in download mode.
3. Type in "fastboot boot twrp.img" (replace twrp.img with whatever your twrp image file name is)
4. Go to advanced and select adb sideload, swipe to start.
5. Now move to your cmd window and type in "adb sideload kernel.zip" (replace kernel.zip with whatever your kernel zip file name is)
Wait for the process to finish
Now press home go to wipe>advanced wipe select dalvik cache and swipe to wipe
again press home and select reboot, select system
Now final important step
6. don't swipe, select "do not install twrp"
Click to expand...
Click to collapse
This might sound like a stupid question but I am a major newbie when it comes to this,
Right now i managed to compile a custom kernel and I have a boot image along with the kernel, so to get the kernel.zip do I just zip up all these files? also I read that I could simply flash the image by rebooting to my bootloader and then using " fastboot flash boot boot.img " would this work , and if so does this mean i don't need twrp...
Thanks again for the help , it is much appreciated

MaxTurner771 said:
This might sound like a stupid question but I am a major newbie when it comes to this,
Right now i managed to compile a custom kernel and I have a boot image along with the kernel, so to get the kernel.zip do I just zip up all these files? also I read that I could simply flash the image by rebooting to my bootloader and then using " fastboot flash boot boot.img " would this work , and if so does this mean i don't need twrp...
Thanks again for the help , it is much appreciated
Click to expand...
Click to collapse
If you just want to flash your custom kernel there's no need to flash a boot.img if you've a running rom installed. You can flash the kernel.zip it via twrp or adb sideload via twrp.
Sorry for the late reply, if you have a bootloader-unlocked 6.1 Plus you should join Nokia 6.1 Plus community on telegram you'll get much faster response from the community regarding your device ?

Nubia Z17 fastboot error pls help

My TWRP recovery was erased when I back to official rom even I hadnt mark that option in twrp recovery. Now when I go till fastboot to instal TWRP I can only do 2 commands then it stops working , but I need 3 commands to instal the twrp. HOW do I FIX it? pleeeease
I have installed the right drivers and every step before it works completly fine.
The fastboot mode screen stay frozen then the phone turns off
Fastboot devices ok
Fastboot oem nubia_unlock NUBIA_Z17 NX563J ok
Fastboot flash recovery recovery.img not ok, just frozen screen then turns off
It has the last nubia official rom
Can I use the official local update app in manual update to flash recovery?
I need it so much to install gapps
Or do exist another whey to install gapps no Nubia Z17 without TWRP?

GuiMediller said:
My TWRP recovery was erased when I back to official rom even I hadnt mark that option in twrp recovery. Now when I go till fastboot to instal TWRP I can only do 2 commands then it stops working , but I need 3 commands to instal the twrp. HOW do I FIX it? pleeeease
I have installed the right drivers and every step before it works completly fine.
The fastboot mode screen stay frozen then the phone turns off
Fastboot devices ok
Fastboot oem nubia_unlock NUBIA_Z17 NX563J ok
Fastboot flash recovery recovery.img not ok, just frozen screen then turns off
It has the last nubia official rom
Can I use the official local update app in manual update to flash recovery?
I need it so much to install gapps
Or do exist another whey to install gapps no Nubia Z17 without TWRP?
Click to expand...
Click to collapse
To flash recovery download twrp 3.5,
Put it into minimal adb folder, copy its name run cmd with administrative rights withing minimal adb and use *fastboot flash recovery "copied name".img

My phone (Nubia z17) don't work. Only fastboot mode and recovery mode work. Please help me

Vi7eta said:
To flash recovery download twrp 3.5,
Put it into minimal adb folder, copy its name run cmd with administrative rights withing minimal adb and use *fastboot flash recovery "copied name".img
Click to expand...
Click to collapse

GuiMediller said:
My TWRP recovery was erased when I back to official rom even I hadnt mark that option in twrp recovery. Now when I go till fastboot to instal TWRP I can only do 2 commands then it stops working , but I need 3 commands to instal the twrp. HOW do I FIX it? pleeeease
I have installed the right drivers and every step before it works completly fine.
The fastboot mode screen stay frozen then the phone turns off
Fastboot devices ok
Fastboot oem nubia_unlock NUBIA_Z17 NX563J ok
Fastboot flash recovery recovery.img not ok, just frozen screen then turns off
It has the last nubia official rom
Can I use the official local update app in manual update to flash recovery?
I need it so much to install gapps
Or do exist another whey to install gapps no Nubia Z17 without TWRP?
Click to expand...
Click to collapse
give you a easy app for flash TWRP3.2.3,but is chinese.unzip the zip file。if phone is turn on.(Developer options should be turned on）type 2 and clik "ENTER".best is phone on BL（Turn off the phone, press and hold the volume - button and power button at the same time to enter BL mode.）.then type 3 and clik "ENTER".when you see "OK",then Use the volume keys to select recovery mode, then press the power key.

I have tried and I make mistakes. ''waiting for any device''