Database Users

[GUIDE Step-byStep]RETURN2STOCK/UNBRICK/UNLOCK/ROOT] e.g. STUCK AFTER UPDATE

How to unbrick or get back stock on your Huawei Mate 8. There are many reasons why you would want to do that.
In my case my device (AL10) was stuck at "your device cannot be trusted" after updating from B180 to B321.
First I got to thank acer73 for his software. ajsmsg78 and Kris Chen for their links to the right ROMs.
Also thanks to DarkSilentSC for his help, especially with the L29, great support.
He has a L29, which I don't have, so I'm glad he provides help with that device.
This worked for me on my AL10 to get it back on track, should work on other models too. Just have to find the right ROMSs as according to your model. However, I am not responsible if this does not work for you or if it bricks your phone even more.
And remember: don't forget turning on usb debugging whenever you can!
Unbrick (return to Stock)
1. Find yourself a stock ROM.zip according to your model and extract from the zip the update.app (I used one from a B172 (AL10) Stock ROM, I was running a B180 custom ROM, it worked.)
2. Download the Huawei Update Extractor http://forum.xda-developers.com/showthread.php?t=2433454
3. Extract boot.img, recovery.img, system.img and cust.img with the HuaweiUpateExtractor from the Update.App you find in the ROM to somewhere where you can find them easily
4. Head over to http://forum.xda-developers.com/mate-8/development/rayglobe-italian-knife-t3295526 (You can also do it with fastboot commands, but Acer73's tool makes it easier)
5. get yourself the Italian Knife (btw you probably have to turn off your anti-virus program), extract it in a directory on your PC and start Rayglobe_knife.exe
6. Put the images you have extracted into the folder Unbrick (same directory where you extracted Rayglobe Knife in). The folder was created after you started Rayglobe_Knife.exe
7. Boot your phone into bootloader.
8. In the Rayglobe Knife tool choose Unbrick and choose the option where it says you have placed all the images in the unbrick folder.
9. let the magic work. The phone will restart and it will probably take 15 minutes, make sure its charged enough.
After all that I quickly updated to the latest Stock ROM version, in my case B321, which you need to do if you want to flash later a custom B321. See second post if you want to do that as well or continue with unlocking the bootloader.
Now lets get the bootloader unlocked (for some reason mine was still unlocked)
1. Get Minimal ADB https://www.androidfilehost.com/?fid=24521665358595410
2. Hopefully you still have your unlock code (cause you need it otherwise it won't work)
3. Put your phone in Bootloader Mode (Press & hold power and volume down)
4. Extract Minimal ADB zip and run command.bat
5. Type <fastboot oem unlock xxxxxxxxxxxxx> (where xxxx is your bootloader unlock code)
6. Done
Now lets get twrp set up
1. For that we need minimal ADB again
2. Headover to http://forum.xda-developers.com/mate-8/development/recovery-twrp-huawei-mate-8-t3298567
3. Download TWRP according to your EMUI (For B321 it's EMUI 4.1)
4. Place the image in the directory of the Minimal ADB
5. Rename it to just twrp.img (not necessary but simplifies things)
6. Put your phone in Bootloader Mode (Press & hold power and volume down)
7. Run command.bat
8. Type <fastboot flash recovery twrp.img>
9. Then type fastboot reboot
10. Now you can hold volume up and power until your phone boots into TWRP
11. You need to format data (you'll lose everything on your phone)
12. Done

Remember: don't forget turning on usb debugging whenever you can!
!!!FOR L29 scroll down to DarkSilentSC's instructions!!!
After unbricking I quickly updated my AL10 to the latest version, in this case B321. Should work with all B3xx
1. Head over to Kris Chen's thread (this I used for the AL10)
http://forum.xda-developers.com/mate-8/development/rom-verison-t3324164
Or ajsmsg78's (also AL10 and L09)
http://forum.xda-developers.com/showpost.php?p=66776194&postcount=58 to get the Stock B321
2. Download the ROM and after downloading the zip file, extract update.app from it. Copy the UPDATE.APP to the internal memory of your HM8 in a folder called - dload (you may have to create it). Then press [volume+]+
[volume-]+[power] together to force the update.
3. Voila B321
-----------
!!![For the L29 you should try DarkSilentSC's instructions, which you find below or in post #54 on page 6 http://forum.xda-developers.com/mate-8/general/unbrick-updating-to-b321-t3375934/page6 don't forget to hit thanks!!!
1. Start from stock B170 firmware with TWRP ready
2. Extract BOOT, CUST, RECOVERY, SYSTEM from B321 UPDATE.APP
3. Add firmware .zip file (which contains META-INF folder and UPDATE.APP) and place it into internal storage
4. Make sure internal storage data is fully backed up
5. Delete All Accounts in Settings
6. Go to Recovery, Wipe Cache, Delvik Cache, Data, System
7. Flash that .zip file! (Getting errors is okay at this time) [This is what I didn't do before!]
8. Boot straight to bootloader
9. fastboot flash boot, cust, and system
10. let it boot. Let it proceed with encryption process in chinese and fully boot into EMUI
11. NOW I'M AT EMUI 4.1!
12. Reboot to fastboot and fastboot flash insecure_boot and flash TWRP
13. Reboot to recovery (TWRP) and then flash whatever rom you want to place in!
14. Enjoying it!

Great, was looking for details instructions like that, was stuck at cannot be trusted screen

Hello. Also i stuck today when i try to update. I try at my own all what did you said ......everything greast but when i try to flash rom from update.app proccess no pass more than 5:%.
My phone was also al-10 but 2 months ago i debrand with internation rom of acer. Nothing i cant flash . phone reboot work but can flash i thing my problem is the oem info file. Can anyone please help me

ganjbass said:
Hello. Also i stuck today when i try to update. I try at my own all what did you said ......everything greast but when i try to flash rom from update.app proccess no pass more than 5:%.
My phone was also al-10 but 2 months ago i debrand with internation rom of acer. Nothing i cant flash . phone reboot work but can flash i thing my problem is the oem info file. Can anyone please help me
Click to expand...
Click to collapse
Which update.app did you use? Maybe your download is corrupt?
BTW I debranded mine too with Acer's to international.

GerManiac said:
Which update.app did you use? Maybe your download is corrupt?
BTW I debranded mine too with Acer's to international.
Click to expand...
Click to collapse
NXT-AL10C00B321 i extract i unbrick from acer tool and then i use uppdate.app t but no pass more than 5%
What method you used for deprand? mine after debrand no able to use wifi recovery also no let me update even if i install factory recovery.

ganjbass said:
NXT-AL10C00B321 i extract i unbrick from acer tool and then i use uppdate.app t but no pass more than 5%
Click to expand...
Click to collapse
But you first used different ROM images to unbrick and then tried to update to B321.
really sounds as if your file is corrupted. Would try to download it again

GerManiac said:
But you first used different ROM images to unbrick and then tried to update to B321.
really sounds as if your file is corrupted. Would try to download it again
Click to expand...
Click to collapse
ok i will try tommorow......thanks for help by theway the phone booted but if i flash recovery for root no boot.... very strange....sometimes aloud to flash from boot some times no ohhhhhhh(((
Or something no correct with huawei extractor..... Can you provide extracted files?
Thanks in advance.

So I unbricked with B170 and then tried force flashing B321. My first attempt at flashing B321 ended up getting stuck at 5%. Tried flashing again and it said it was incompatible with the current firmware version of my phone. Any ideas on what I should do next?
Edit: Nevermind. I mistakenly copied the UPDATE.APP from B170 to the dload folder instead of the one from B321. lol
Now on B321. Thanks!

AndroidBestieRE said:
Great, was looking for details instructions like that, was stuck at cannot be trusted screen
Click to expand...
Click to collapse
Used this stock ROM for L29 to unbrick, it worked well following OP instructions
update.hicloud.com:8180/TDS/data/files/p3/s15/G1076/g104/v46463/f1/full/update.zip

hi, i have follow unbrick guide with knife, flash from knife and phone reboot. when phone reboot in settings, info phones, serial number is b321. is corretcly??

danielg90 said:
hi, i have follow unbrick guide with knife, flash from knife and phone reboot. when phone reboot in settings, info phones, serial number is b321. is corretcly??
Click to expand...
Click to collapse
Don't know which ROM you used to unbrick.
But seems that you used an B321 if that worked for you and you have no problems then that is great.
Could mean that wet can unbrick straight with the most current ROM available. If someone else could confirm?

GerManiac said:
Don't know which ROM you used to unbrick.
But seems that you used an B321 if that worked for you and you have no problems then that is great.
Could mean that wet can unbrick straight with the most current ROM available. If someone else could confirm?
Click to expand...
Click to collapse
i have AL10, please link stock rom that you used

danielg90 said:
i have AL10, please link stock rom that you used
Click to expand...
Click to collapse
Can't find the link right now, am in the car, but I've found this link to B170
http://update.hicloud.com:8180/TDS/data/files/p3/s15/G884/g77/v43738/f1/full/update.zip:
Did not check though if it works

GerManiac said:
Can't find the link right now, am in the car, but I've found this link to B170
http://update.hicloud.com:8180/TDS/data/files/p3/s15/G884/g77/v43738/f1/full/update.zip:
Did not check though if it works
Click to expand...
Click to collapse
sorry, is possible flash with knife if bootloader is locked? my bootloader is locked

hello, my phone is still stuck.. i tried other cust/system/recovery/boot from other update.app, but its still stuck at: your device has been unlocked... im on l29

Have NXT-L29, downloaded stock L09 file from posted link, placed UPDATE.APP into 'dload' folder which I created, but still hanging at 5%. What to do?? Exactly where do I create this 'dload' folder? Just at 'Internal Storage'?

danielg90 said:
sorry, is possible flash with knife if bootloader is locked? my bootloader is locked
Click to expand...
Click to collapse
Bootloader has to be unlocked. You can unlock best with DC unlocker, it's fast and only costs around 5 dollars.
Unless you already have your unlock code then you can unlock following instructions see my first post

GerManiac said:
Bootloader has to be unlocked. You can unlock best with DC unlocker, it's fast and only costs around 5 dollars.
Unless you already have your unlock code then you can unlock following instructions see my first post
Click to expand...
Click to collapse
ok how can i unlocked bootloader with b321 stock?

DarkSilentSC said:
Have NXT-L29, downloaded stock L09 file from posted link, placed UPDATE.APP into 'dload' folder which I created, but still hanging at 5%. What to do?? Exactly where do I create this 'dload' folder? Just at 'Internal Storage'?
Click to expand...
Click to collapse
What are you trying to do? Unbrick or update?
The folder has to be created in internal storage

help | DOWNGRADE TO MM | brick

Okay, so :- :crying::crying::crying::crying:
I was on nougat and went to downgrade and followed ALL instruction apart from one - which was something I missed with translate until i visited the htc page for the tenth time trying to fix this.
:silly: :crying: ----- I didnt change default location whilst running nougat -----:silly: :crying:
I flashed the c432 oem file, and I have tried to update to b151, b150 and b161 all through the update.app method. to no avail.
I have tried flashing everything manually through adb pushing AND fastboot after using the extractor and everything works EXCEPT the system.img. I am faced with an error telling me it has failed, 'unable to mount /system' - - - This message comes through regardless of what I do and im panicking
PLEASE HELP I AM SO STUCK
thank you in advance for any suppport

What P9 lite you have?

Johnny TDN said:
What P9 lite you have?
Click to expand...
Click to collapse
I have the vns-L31 however ive just opened dc unlocker and its showing my model as 21
i can access fastboot and rescue mode as well as twrp although when flashing im faced with the /system error

It is written, on htcmania, using c432oeminfo and b130.
so,
Code bootloader
Twrp meticulus.
Install c432oeminfo.zip, power off
Restart dload c432b130.

Chisetdel31260 said:
It is written, on htcmania, using c432oeminfo and b130.
so,
Code bootloader
Twrp meticulus.
Install c432oeminfo.zip, power off
Restart dload c432b130.
Click to expand...
Click to collapse
i will try that, although ill get errors when flashing the zip - not only that but I cant get to meticulus once its flashed - possibly the system error?

Restart, bootloader code,
Twrp Meticulous, went a wipe, xxxx everything except external storage, installs c432oeminfo.zip, dload c432b130.
http://www.htcmania.com/showthread.php?t=1265458

Chisetdel31260 said:
Restart, bootloader code,
Twrp Meticulous, went a wipe, xxxx everything except external storage, installs c432oeminfo.zip, dload c432b130.
http://www.htcmania.com/showthread.php?t=1265458
Click to expand...
Click to collapse
what do you mean when you say code bootloader? what should i do there? anything im missing?

raihanbam said:
what do you mean when you say code bootloader? what should i do there? anything im missing?
Click to expand...
Click to collapse
Yes, I noticed that from time to time, in bootloader mode, it is written unlocked, but as the device bootloop (bug) I believe it too. so
I retype systematically the bootloader code to open.

raihanbam said:
what do you mean when you say code bootloader? what should i do there? anything im missing?
Click to expand...
Click to collapse
If you have your bootloader unlocked (if you don,t have it, unlock it) and flash TWRP. After that, flash B130 for your VNS-L31. Done.

Unlock yor Bootloader again. And try flashing again.
Have hade the same problem. My bootloader showed unlocked, but he was not.
Ron

raihanbam said:
what do you mean when you say code bootloader? what should i do there? anything im missing?
Click to expand...
Click to collapse
i have followed all of these and notw its stuck on your device is booting.....
i flashed the rom with recovery so now ill try the dload method again, i assume ill have to flash the second zip with recovery?

Chisetdel31260 said:
Restart, bootloader code,
Twrp Meticulous, went a wipe, xxxx everything except external storage, installs c432oeminfo.zip, dload c432b130.
http://www.htcmania.com/showthread.php?t=1265458
Click to expand...
Click to collapse
i am now stuck with your device is booting - cant access fastboot or recovery at all - doesnt show up in adb or fastboot either

raihanbam said:
i am now stuck with your device is booting - cant access fastboot or recovery at all - doesnt show up in adb or fastboot either
Click to expand...
Click to collapse
Shut down your device. Press the switch off for 10 secounds.
When the phone is off, swith on and same time with vol + without usb-kabel, and otherwise try it with usb-kabel.
When you stock recovery starts. You can try a factoryreset.
When you Revolution recovery starts flash oem.info again and perform the dload methode with your right MM UPDATE.APP.
Ron

RonPo said:
Shut down your device. Press the switch off for 10 secounds.
When the phone is off, swith on and same time with vol + without usb-kabel, and otherwise try it with usb-kabel.
When you stock recovery starts. You can try a factoryreset.
When you Revolution recovery starts flash oem.info again and perform the dload methode with your right MM UPDATE.APP.
Ron
Click to expand...
Click to collapse
no matter what I do I'm stuck with the device is booting screen I even let the battery drain to try that way-I'm so screwed

RonPo said:
Shut down your device. Press the switch off for 10 secounds.
When the phone is off, swith on and same time with vol + without usb-kabel, and otherwise try it with usb-kabel.
When you stock recovery starts. You can try a factoryreset.
When you Revolution recovery starts flash oem.info again and perform the dload methode with your right MM UPDATE.APP.
Ron
Click to expand...
Click to collapse
no matter what I do I'm stuck with the device is booting screen I even let the battery drain to try that way-I'm so screwed

RonPo said:
Shut down your device. Press the switch off for 10 secounds.
When the phone is off, swith on and same time with vol + without usb-kabel, and otherwise try it with usb-kabel.
When you stock recovery starts. You can try a factoryreset.
When you Revolution recovery starts flash oem.info again and perform the dload methode with your right MM UPDATE.APP.
Ron
Click to expand...
Click to collapse
okay so I got to the erecovery screen, it only gives the option to dl the latest version and fails along with reboot and shutdown - no wipe

raihanbam said:
okay so I got to the erecovery screen, it only gives the option to dl the latest version and fails along with reboot and shutdown - no wipe
Click to expand...
Click to collapse
OK. Go to bootloader and flash:
fastboot flash recovery recovery.img
fastboot flash boot boot.img
fastboot flash system system.img
extract this files with: Huawei Update Extractor from your Original UPDATE.APP
system.img is loading in steps and need much time.
Ron

Hi guys, i have the same problem after doing some ****, flashed stock rom from lineageos 14 and a lot of things that i'm trying now to unbrick my phone... i cant enter to the erecovery with the 3 buttons method, wathever i do, and i dont have any idea on how to unbrick my phone... I hope someone could help me

Hard bricked my new z3 ze552kl

this is really funny but at the same its not. so basically i just bought zenfone 3 last night and hard bricked it 3 hours later. LOL.
so i just bought the phone last night. then i upgrade it to official nougat. then as usual i always install custom recovery and root my new bought phone. but when i try to follow the steps from here https://forum.xda-developers.com/zenfone-3/how-to/twrp-recovery-3-0-2-root-zenfone-3-t3569926 i missed the copying of the supersu.zip, busybox.zip, root.zip and noverity.zip part.
so i did unlocked my bootloader through recovery and installed twrp recovery. and then i realised i forgot to copy the 4 zip files to my phone. because after i try to boot my phone the red sign message pop up saying "it says my device is corrupt. it cant be trusted and may not work properly. your device will shutdown in 10 seconds" so basically i just bootloop my phone because i cannot boot it, everytime after that message appears my phone just turned off.
then i copy the 4 files to my internal storage and installed the zip through recovery. and follow the procedures step by step according to this right https://forum.xda-developers.com/zenfone-3/how-to/twrp-recovery-3-0-2-root-zenfone-3-t3569926 but i still cannot boot my phone.
then im panic because i didnt slept last night due to my frustation i go to twrp Wipe>Advanced Wipe and i ticked Dalvik,Sytem,Data,Cache and Swipe to Wipe. then i press reboot, then of course it says no OS installed because obviously i wipe the rom, i dont mind because i downloaded both mm and nougat rom from here https://asusvn.com/threads/all-rom-...0kl-zu680kl-zc551kl-zc520tl-zc553kl.1108.html so i thought i can just flash it through recovery right so its like flashing a fresh stock rom. but when i try flash the rom which is Z012D_WW_13.20.10.152 it says "this package is for "WW_Phone" devices; this is a "omni_ze552kl" "updater process ended with ERROR: 7" now what??? so basically i cannot flash the stock rom through recovery because of that.
then how??? pls help me i just bought the phone last night.... :crying:

Wrong way.
Go here : https://forum.xda-developers.com/zen...552kl-t3471524
Download stock recovery.img. flash back recovery by adb command. Enter recovery, install stock rom 152 or nougat you want.
Remember, rom file must be tranfered to micro sd card

Stock ZS550KL
cdanthien said:
Wrong way.
Go here : https://forum.xda-developers.com/zen...552kl-t3471524
Download stock recovery.img. flash back recovery by adb command. Enter recovery, install stock rom 152 or nougat you want.
Remember, rom file must be tranfered to micro sd card
Click to expand...
Click to collapse
Do you know where can i found stock recovery for ZS550KL?, i brciked my phone too :/

yaneruz said:
Do you know where can i found stock recovery for ZS550KL?, i brciked my phone too :/
Click to expand...
Click to collapse
i didnt found anything for ZS550KL. but i found this
mega.nz/#F!ok0V0RIA!5WKtHe98opzjVI3NPbM7Ww
my phone was bricked too! i do install stock nougat via TWRP. it worked but when i continue reboot system, DM-Verity EIO Mode blah blah blah. god

w1040 said:
this is really funny but at the same its not. so basically i just bought zenfone 3 last night and hard bricked it 3 hours later. LOL.
so i just bought the phone last night. then i upgrade it to official nougat. then as usual i always install custom recovery and root my new bought phone. but when i try to follow the steps from here https://forum.xda-developers.com/zenfone-3/how-to/twrp-recovery-3-0-2-root-zenfone-3-t3569926 i missed the copying of the supersu.zip, busybox.zip, root.zip and noverity.zip part.
so i did unlocked my bootloader through recovery and installed twrp recovery. and then i realised i forgot to copy the 4 zip files to my phone. because after i try to boot my phone the red sign message pop up saying "it says my device is corrupt. it cant be trusted and may not work properly. your device will shutdown in 10 seconds" so basically i just bootloop my phone because i cannot boot it, everytime after that message appears my phone just turned off.
then i copy the 4 files to my internal storage and installed the zip through recovery. and follow the procedures step by step according to this right https://forum.xda-developers.com/zenfone-3/how-to/twrp-recovery-3-0-2-root-zenfone-3-t3569926 but i still cannot boot my phone.
then im panic because i didnt slept last night due to my frustation i go to twrp Wipe>Advanced Wipe and i ticked Dalvik,Sytem,Data,Cache and Swipe to Wipe. then i press reboot, then of course it says no OS installed because obviously i wipe the rom, i dont mind because i downloaded both mm and nougat rom from here https://asusvn.com/threads/all-rom-...0kl-zu680kl-zc551kl-zc520tl-zc553kl.1108.html so i thought i can just flash it through recovery right so its like flashing a fresh stock rom. but when i try flash the rom which is Z012D_WW_13.20.10.152 it says "this package is for "WW_Phone" devices; this is a "omni_ze552kl" "updater process ended with ERROR: 7" now what??? so basically i cannot flash the stock rom through recovery because of that.
then how??? pls help me i just bought the phone last night.... :crying:
Click to expand...
Click to collapse
oh i did it!
this is what u need:
download newest marshmallow here:
ASUS ZE552KL Marshmallow WW-152
find boot.img & recovery.img for newest marshmallow (look at the code WW-xx.xx.xx.xxx + Z012D) at here:
click me sir
TWRP here: TWRP-3.0.2 for ZE552KL
dm-verity.zip here: click me sir thanks to @kaffeine1
no-verity-opt-encrypt-5.1.zip here: click me
adb-tools: click here
okay first:
- put all of them in 1 folder
- only unzip adb-tools
- shift + right click -> open command prompt here
- enable fastboot mode on zenfone 3
- type 'fastboot flash system dm-verity.zip' without ' '
- type 'fastboot flash boot boot.img' without ' '
- type 'fastboot flash recovery twrp-3.0.2-Z012D.img' without ' '
- type 'fastboot reboot'
- wipe all (except sd card)
- reboot to recovery again
- put Marshmallow zip & no-verity-opt-encrypt-5.1.zip into internal storage
- start flashing Marshmallow wait until finish
- after that, start flashing no-verity-opt-encrypt-5.1.zip
- reboot system
tell me if you get any problem

lastremnant said:
oh i did it!
find boot.img & recovery.img for newest marshmallow (look at the code WW-xx.xx.xx.xxx + Z012D) at here:
click me sir
dm-verity.zip here: click me sir thanks to @kaffeine1
okay first:
- put all of them in 1 folder
- only unzip adb-tools
- shift + right click -> open command prompt here
- enable fastboot mode on zenfone 3
- type 'fastboot flash system dm-verity.zip' without ' '
- type 'fastboot flash boot boot.img' without ' '
- type 'fastboot flash recovery twrp-3.0.2-Z012D.img' without ' '
- type 'fastboot reboot'
- wipe all (except sd card)
- reboot to recovery again
- put Marshmallow zip & no-verity-opt-encrypt-5.1.zip into internal storage
- start flashing Marshmallow wait until finish
- after that, start flashing no-verity-opt-encrypt-5.1.zip
- reboot system
tell me if you get any problem
Click to expand...
Click to collapse
The above links are dead, can someone re-upload.

[ZE552KL/Z012DC] Canadian Thread - Unlock, Root, Update to Nougat

This thread will be for the Canadian version of ZE552KL, and will be updated with specific info relevant to Z012DC model found in Canada (Canada Computers, Staples, other retailers). It has WW SKU number.
It took me a while and some searching to figure all steps out. I also modified Asus N and M firmware to remove version checks. Without this step - i was stuck with error 7 in TWRP. The only difference between Z012D and Z012DC seems to be in Fastboot and ADB drivers, TWRP recovery, system images seem to work well so far.
Steps:
1. Download Fastboot and ADB Drivers. For me usb driver on ZE552KL Asus download page didn't work. Select "Only install driver", you do not need to update your drivers via DRP.
Fastboot driver (for Vendor VID_18D1&PID_D00D): http://drivers.drp.su/Telephone/Hua...03.00/Huawei-FORCED-Allx64-2.00.03.00-drp.exe
ADB Driver (for VID_18D1&PID_D002): http://drivers.drp.su/Telephone/Leshcat/WinAll/Leshcat-WinAll-drp.exe
2. Save the following files on your External SD Card:
Modified M image UL-ASUS_Z012D-WW-13.20.10.152-user.zip
Modified N image UL-ASUS_Z012D-WW-14.2015.1701.8-user.zip
SuperSU - latest version from here
no-verity-opt-encrypt-5-1.zip. Give thanks to @kaffeine1 , without him - we would all be stuck with black screens
3. Save ADB and Fastboot files on your computer, and extract; give thanks to @snowwolf725
4. Download newer recovery (TWRP 3.1.0) from here
5. Unlock bootloader via unofficial unlock method; give thanks to @snowwolf725
6. Get into fastboot by turning off the phone, and pressing volume up + power. Install recovery that you downloaded in step #4:
Code:
fastboot flash recovery twrp-3.1.0-0-Z012D.img
7. Follow the steps this guide by @kaffeine1 . Skip the steps of downloading Nougat and Marshmallow firmware from Asus site, as you have already downloaded and saved both firmwares in Step #2 . Also skip the last step - do not reboot into Nougat, but go back to fastboot mode.
8. Root Nougat - follow steps under #2 here:
https://forum.xda-developers.com/zenfone-3/how-to/twrp-recovery-3-0-2-root-zenfone-3-t3569926
How to update to the latest version of OS:
1. Go to Asus Site, download latest WW image UL-ASUS_Z012D-WW-14.2020.1703.28-user.zip
2. Extract UL-ASUS_Z012D-WW-14.2020.1703.28-user.zip\META-INF\com\google\android\updater_script , edit, remove first two lines, and put back into the zip file (e.g. using 7zip)
3. Extract from above zip file boot.img , and flash it via: fastboot flash boot boot.img
4. Flash recovery: fastboot flash recovery twrp-3.1.0-0-Z012D.img
5. Reboot into recovery, and flash:
- Firmware that you modified in #2
- no-verity-opt-encrypt-5.1.zip
- Latest SuperSU
- Rooted.zip (from step #8 above)
6. Reboot mobile, and enjoy new version!
Phone info as purchased:
Model Number: ASUS_Z012DC
Android version: 6.0.1
Baseband version: M3.10.42-Libra_080001
Build number: MMB29P.WW_Phone-13.20.10.152-20161222
Manufacture date (on the box): January 2017
Latest version - UL-ASUS_Z012D-WW-14.2020.1703.28-user.zip
Model Number: ASUS_Z012DC
Android version: 7.0
Baseband version: M3.10.47-Libra_080001
Build number: NRD90M.WW_Phone-14.2020.1703.28-20170410
Special thanks to:
- @jcadduono for TWRP recovery
- @snowwolf725 for guide unlock bootloader
- @kaffeine1 for guide how to upgrade to N from M

Reserved for future use

can i follow this step for ZE520KL ?

I got my self a canadian vertion ZE552KL, but i can´t seem to fully unlock the boot loader, it goes onto fastboot, but it does not allow me to flash anything it gives a permision denied .
when i tried to flash fw from sdcard gives a error: the the sku is "WW_" and mine is ""
have you came across this problem.
how can it be solved?
thanks

lastremnant said:
can i follow this step for ZE520KL ?
Click to expand...
Click to collapse
no, I do not think so. these are different phones.

DilipRB said:
I got my self a canadian vertion ZE552KL, but i can´t seem to fully unlock the boot loader, it goes onto fastboot, but it does not allow me to flash anything it gives a permision denied .
when i tried to flash fw from sdcard gives a error: the the sku is "WW_" and mine is ""
have you came across this problem.
how can it be solved?
thanks
Click to expand...
Click to collapse
try first flashing 6.0.1 firmware from asus site and then modified 7.0 firmware. if the error is when flashing 6.0 fw - try modified 6.0. and do paste specific rrror.

anterus said:
no, I do not think so. these are different phones.
Click to expand...
Click to collapse
nevermind sir, it worked for me

Strange things do happen!!!
anterus said:
try first flashing 6.0.1 firmware from asus site and then modified 7.0 firmware. if the error is when flashing 6.0 fw - try modified 6.0. and do paste specific rrror.
Click to expand...
Click to collapse
i was trying this because i wanted to upgrade fw to 7 and trying to unlock bootloader to flash twrp for backups...
I tried original Asus UL-ASUS_Z012D-WW-13.20.10.131-user and gave strange error after check... this fw is for "WW_Phone" and this phone is ""
but after reestart i got OTA updates... now my ZE552KL-Z012DC is in 7.0....
i can live with that, only problem for me is adb backups, i prefer twrp.
thanks
P.D. what pusles me is why getprop("ro.product.name") returns empty sting????

DilipRB said:
i was trying this because i wanted to upgrade fw to 7 and trying to unlock bootloader to flash twrp for backups...
I tried original Asus UL-ASUS_Z012D-WW-13.20.10.131-user and gave strange error after check... this fw is for "WW_Phone" and this phone is ""
but after reestart i got OTA updates... now my ZE552KL-Z012DC is in 7.0....
i can live with that, only problem for me is adb backups, i prefer twrp.
thanks
P.D. what pusles me is why getprop("ro.product.name") returns empty sting????
Click to expand...
Click to collapse
backup those zips, open with winrar or another app. open meta-inf/android/google/updater-script with notepad++ try deleting from ifelse until ) );
save and let winrar save new update

lastremnant said:
backup those zips, open with winrar or another app. open meta-inf/android/google/updater-script with notepad++ try deleting from ifelse until ) );
save and let winrar save new update
Click to expand...
Click to collapse
Tryed that, and got footer error...
seems that to modifying the script file and then recompresing will change the compretion check algorithem. giving a footer error.
i should try pakaging the apk again...
there was a program to do so but i cant recall which...
thks

DilipRB said:
Tryed that, and got footer error...
seems that to modifying the script file and then recompresing will change the compretion check algorithem. giving a footer error.
i should try pakaging the apk again...
there was a program to do so but i cant recall which...
thks
Click to expand...
Click to collapse
i found it ...
apktool from :
https://forum.xda-developers.com/showthread.php?t=1989533
Sorry this was for apks... but i guess same principle aplies... when i can i shall try and post the outcome

DilipRB said:
i was trying this because i wanted to upgrade fw to 7 and trying to unlock bootloader to flash twrp for backups...
I tried original Asus UL-ASUS_Z012D-WW-13.20.10.131-user and gave strange error after check... this fw is for "WW_Phone" and this phone is ""
but after reestart i got OTA updates... now my ZE552KL-Z012DC is in 7.0....
i can live with that, only problem for me is adb backups, i prefer twrp.
thanks
P.D. what pusles me is why getprop("ro.product.name") returns empty sting????
Click to expand...
Click to collapse
I noticed that in some cases TWRP doesn't "stick", and gets overridden by default bootloader. Specific check is essentially useless - just to prevent flash of improper image. Just remove the check in the new FW, or use modified FW that has the check removed. I think in your case you can just re-flash TWRP since your bootloader is unlocked?

I tryed several TWRP 3.02 and 3.10 if a boot imge ... if entered bootloader with volum key + power it says all ok but booting never happens... if i enter bootloader trough adb it stucks until i disconnect and reconnect usb cable. when trying to flash. fast boot returns error not have permision and side load error secttion 7 on UL modified or else footer w
error after passing check. i shall try modiffying UL 13.20.10 and see what happens

DilipRB said:
I tryed several TWRP 3.02 and 3.10 if a boot imge ... if entered bootloader with volum key + power it says all ok but booting never happens... if i enter bootloader trough adb it stucks until i disconnect and reconnect usb cable. when trying to flash. fast boot returns error not have permision and side load error secttion 7 on UL modified or else footer w
error after passing check. i shall try modiffying UL 13.20.10 and see what happens
Click to expand...
Click to collapse
flash modified images through twrp - with links in OP

Well my wife liked the phone so much, that she "kindly requested" me to gift it to her... now she is the proud owner of a canadian vertion of ZE552KL and i got myself a ZS570KL
thanks a lot for all your help.
P.D. : i think she was not happy with the time i was spending with the device.

I know this is going to sound super dumb, but the unofficial bootloader unlock still triggers the bootup message and voids the warranty, right?

This might be even dumber... But my guess is that the official app to unlock boot loader, does more than unlock,
My guess is that it also register with asus mobile, the fact that for your device has been unlocked...

DilipRB said:
This might be even dumber... But my guess is that the official app to unlock boot loader, does more than unlock,
My guess is that it also register with asus mobile, the fact that for your device has been unlocked...
Click to expand...
Click to collapse
That's what some manufacturers do, like Motorola and HTC. But from back when I unlocked the BL on my Zenfone 2 Laser, I remember that all it did (as far as I could tell) was unlock the bootloader and set a flag in the bootloader that made it say it was unlocked that couldn't be reversed. No need for fancy registration systems when you can just boot up the phone and take a look.

What was modified in your N-image firmware file? There is now a newer version that I'd like to install. Can you provide an updated modified file for version WW-14.2020.1703.28 or give the steps needed to modify it myself?

Jarrick said:
What was modified in your N-image firmware file? There is now a newer version that I'd like to install. Can you provide an updated modified file for version WW-14.2020.1703.28 or give the steps needed to modify it myself?
Click to expand...
Click to collapse
Updated OP with instructions regarding how to upgrade to the latest version of N - just tested steps myself. Should be applicable to all future versions of N posted on Asus site. Enjoy!

[Fixed][Help] How to relock bootloader and revert to stock

Fixed! Go here for steps
I've tried the relock.bat provided in the unofficial bootloader unlock/lock thread but I keep getting the bootloader unlocked warning. I also downloaded and tried installing the stock ROM mentioned in https://m.youtube.com/watch?v=peSI-KeEt5E&time_continue=23 but the window just closed itself so I manually flashed recovery, boot, system and vendor images using twrp. I then booted and installed the April security patch update but I got random soft-reboots in the process.
Can anyone guide me to restoring the device to locked condition? (4GB ram variant)

Update: Noticed that these reboots occur as soon as app installation is over. Disabled app updates for now

Relock Bootloader ZenFone Max Pro M1
1) Download Zenfone_Max_M1_Pro_Relock.zip and extract it to a folder on your desktop.
2) Power off your phone. Then press Power and Volume Down key together, to boot into fastboot mode.
3) Connect your Asus Zenfone Max Pro M1 to the PC using a USB cable.
4) Windows will now automatically detect the device and start installing the fastboot drivers for it. If not, download and install these ASUS drivers.
5) Open the directory where you extracted the file from #1.
6) In that directory, open a file named relock_bl.cmd
7) A Command (CMD) prompt will do the rest of the work for you.
Let the phone restart.
8) It will then erase all the data on your phone (excluding Micro SD card).
9) Now the phone won’t show the “bootloader unlocked” warning that was displayed before you relocked the bootloader.
You have successfully relocked the bootloader.

myapky said:
9) Now the phone won’t show the “bootloader unlocked” warning that was displayed before you relocked the bootloader.
Click to expand...
Click to collapse
No success. I'm following the method shown in this thread
Edit: Reboots are fixed after I wiped data before flashing the images

myapky said:
1) Download Zenfone_Max_M1_Pro_Relock.zip and extract it to a folder on your desktop.
2) Power off your phone. Then press Power and Volume Down key together, to boot into fastboot mode.
3) Connect your Asus Zenfone Max Pro M1 to the PC using a USB cable.
4) Windows will now automatically detect the device and start installing the fastboot drivers for it. If not, download and install these ASUS drivers.
5) Open the directory where you extracted the file from #1.
6) In that directory, open a file named relock_bl.cmd
7) A Command (CMD) prompt will do the rest of the work for you.
Let the phone restart.
8) It will then erase all the data on your phone (excluding Micro SD card).
9) Now the phone won’t show the “bootloader unlocked” warning that was displayed before you relocked the bootloader.
You have successfully relocked the bootloader.
Click to expand...
Click to collapse
IF YOU ARE ON THE LATEST FIRMWARE THEN THE ABOVE STEPS WORK, I CANNOT POST LINKS HERE AS I'M NOT ABLE TO.
MY PHONE FIRMWARE : Version WW-14.2016.1804.305
CONFIRM YOURS............!!!!

myapky said:
WW-14.2016.1804.305
Click to expand...
Click to collapse
OPM1.WW_Phone-14.2016.1804.305-20180521

Check this [GUIDE][Back-To-Stock] Flash Stock ROM

CHECK THIS : https://forum.xda-developers.com/showpost.php?p=76695194&postcount=95

Download stock recovery availbale at xda forum.
Than download the official latest firmware 1.4GB from asus website and place in external sdcard.
Flash stock recovery with fastboot method. Boot into recovery and flash the firmware zip..it will automatically encrypt your internal data.
SINGHYAR.

myapky said:
CHECK THIS : https://forum.xda-developers.com/showpost.php?p=76695194&postcount=95
Click to expand...
Click to collapse
This got my device into Red State with message "Your data is corrupt". Unlocked bootloader again, will try this method by installing system, boot, recovery and vendor partition images

That script is working for me, but I installed the images of the csc zip which was indonesian edition. Trying again with ZB601KL images

Thanks @myapky! Phone is now having a locked bootloader

Can I relock bootloader after installing Magisk?

Sourav-21 said:
Can I relock bootloader after installing Magisk?
Click to expand...
Click to collapse
You should lock bootloader only on stock recovery without root and with no system modification (like uninstall of system apps, property file change).
If you lock the bootloader with custom recovery or modified system then if OTA messes up boot or any other partition .. you have no way to fix it.
Also .. only locking the bootloader will not fix OTA .. as any OTA patching boot.img will mess your Magisk anyway .. so keep bootloader unlocked if you have modifications.

.A.V.i.n.a.S.h. said:
You should lock bootloader only on stock recovery without root and with no system modification (like uninstall of system apps, property file change).
If you lock the bootloader with custom recovery or modified system then if OTA messes up boot or any other partition .. you have no way to fix it.
Also .. only locking the bootloader will not fix OTA .. as any OTA patching boot.img will mess your Magisk anyway .. so keep bootloader unlocked if you have modifications.
Click to expand...
Click to collapse
Thank you. I forgot that Magisk patch the system.img. In old days superSU just modify the system partition.
I want to relock the bootloader only for the irritating Warning message at the startup. Is there any way to stop that message like moto G?

Sourav-21 said:
Thank you. I forgot that Magisk patch the system.img. In old days superSU just modify the system partition.
I want to relock the bootloader only for the irritating Warning message at the startup. Is there any way to stop that message like moto G?
Click to expand...
Click to collapse
It appears on custom ROM as well .. so not sure about any way to block it.

If i unlock via official app and when some update available and I download & flash by stock recovery will it work?
Another question is if I install custom rom then how can I back in stock rom?

Ariful Hasan Soikot said:
If i unlock via official app and when some update available and I download & flash by stock recovery will it work?
Another question is if I install custom rom then how can I back in stock rom?
Click to expand...
Click to collapse
Recommended to UNLOCK unofficially - using this Guide.
If you have unlocked officially then you will not get OTA update notification.
To update (if you are on stock system without modifications like TWRP, Root etc..),
Download full firmware from ASUS official site ( ZBL601KL OR ZBL602KL ) and try to unzip it once to check for file errors.
If no issues in unzip then keep the file in base path of Internal storage.
You will get a message like System Update file detected (if not then reboot and check).
Select the notification and authorize to update. DONE.
To revert back to Stock from Custom roms - use this GUIDE or follow the method in this thread

.A.V.i.n.a.S.h. said:
Recommended to UNLOCK unofficially - using this Guide.
If you have unlocked officially then you will not get OTA update notification.
To update (if you are on stock system without modifications like TWRP, Root etc..),
Download full firmware from ASUS official site ( ZBL601KL OR ZBL602KL ) and try to unzip it once to check for file errors.
If no issues in unzip then keep the file in base path of Internal storage.
You will get a message like System Update file detected (if not then reboot and check).
Select the notification and authorize to update. DONE.
To revert back to Stock from Custom roms - use this GUIDE or follow the method in this thread
Click to expand...
Click to collapse
I don't understand about base path of internal storage. Plz can you show a screenshot or make clear about which folder i have to put full firmware?

Ariful Hasan Soikot said:
I don't understand about base path of internal storage. Plz can you show a screenshot or make clear about which folder i have to put full firmware?
Click to expand...
Click to collapse
Just keep the file in Internal storage and not under any folder/directory in Internal Storage.
In Internal Storage you should have ..
Android (directory)
DCIM (directory)
Download (directory)
WhatsApp (directory)
..... etc
UL-ASUS_X00T-WW-14.2016.1804.252-user.zip (file)
Remember that the current UL-ASUS_X00T-WW-14.2016.1804.305-user.zip file on https://www.asus.com/in/Phone/ZenFone-Max-Pro-ZB601KL/HelpDesk_BIOS/ is corrupted.
You can download UL-ASUS_X00T-WW-14.2016.1804.252-user.zip from here - https://androidfilehost.com/?fid=674106145207491520