[ZE620KL] How To Go Back To Stock Firmware

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emincangencer

Member
Mar 31, 2019
49
29
Be careful. If you do something wrong you may damage your phone. Doesn't work with Android 10 Firmware. You need to go back to Pie to be able to flash.
You need raw firmware. You may not find the latest version. I've found V16.0615.1903.92.
https://drive.google.com/uc?id=16sY03_C14qqqldYjyurH_hyTgYEASEau&export=download(This is from mtkdevelopers.com)
1- Download the zip file and extract it.
2- Go to Fastboot.
3- Run ze620kl_auto_flash_raw.bat from zip file you extracted.
4- It will take up to 5-7 minute and will reboot automaticly.
5- Then you can install latest update from https://www.asus.com/Phone/ZenFone-5-ZE620KL/HelpDesk_BIOS/.
If you want to re-lock bootloader follow these steps:
## First you have to install stock firmware of course.

1- Go to recovery(This is stock of course after installing stock firmware). Wipe cache then format data. When you enter reboot option press Volume Up for bootloader(try not to boot into system. If you boot you have to wipe cache and data again)
2-
Code:
fastboot oem reset-dev_info
and
Code:
fastboot oem force-reset
3- Then reboot. Now you are in stock firmware and locked bootloader. Your bootloader warning should be gone. Still you can't get ota updates because your Imei number blacklisted. You have to install updates from zip file you get from Asus's website.
For locking bootloader, credits to @lopestom
 
Last edited:

Redmamba

Senior Member
Jun 18, 2018
98
5
Samsung Galaxy A10
After downgrading I installed firmware UL-ASUS_X00QD-ASUS-15.0619.1810.73-1.1.26-user.zip but I can't update to android 9 pie, error 7 or 21, or from sd or from internal memory
 

emincangencer

Member
Mar 31, 2019
49
29
After downgrading I installed firmware UL-ASUS_X00QD-ASUS-15.0619.1810.73-1.1.26-user.zip but I can't update to android 9 pie, error 7 or 21, or from sd or from internal memory

This is V16.0615.1903.92. So after flashing stock firmware you should update to newest versions. You are trying to flash oldest firmware v15.0619.1810.73-1.1.26. You can't do that. Flash the stock firmware again then update to V16.0615.1910.112. If V16.0615.1910.112 can't insalled because it's to new try V16.0615.1905.102 then V16.0615.1910.112.
 
Last edited:
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Redmamba

Senior Member
Jun 18, 2018
98
5
Samsung Galaxy A10
This is V16.0615.1903.92. So after flashing stock firmware you should update to newest versions. You are trying to flash oldest firmware v15.0619.1810.73-1.1.26. You can't do that. Flash the stock firmware again then update to V16.0615.1910.112. If V16.0615.1910.112 can't insalled because it's to new try V16.0615.1905.102 then V16.0615.1910.112.
I solved with this firmware
WW_16.0615. 1912.115
Thanks
 
Last edited:

ermanek

New member
May 25, 2016
2
0
I am having problems at detecting my device in fastboot mode. It reports nothing with the command "fastboot devices" and keeps reporting <wanting devices>. Is it possible to be a cable problem? I wish to relock my bootloader in order to use Google pay.
 

Deero

Member
Sep 21, 2012
13
0
Thank you!! I was able to fix my device after re-locking the bootloader with twrp. Very Helpful!!
 

Emzkts

Member
Oct 21, 2013
7
0
Update failed???

i am getting this error... need help

0
'.\ze620kl_flash_raw.exe' is not recognized as an internal or external command,
operable program or batch file.
'.\ze620kl_flash_raw.exe' is not recognized as an internal or external command,
operable program or batch file.
""""""""""""""""""
"UPDATE FAILED !!"
""""""""""""""""""
" "
Press any key to continue . . .
 

emincangencer

Member
Mar 31, 2019
49
29
i am getting this error... need help

0
'.\ze620kl_flash_raw.exe' is not recognized as an internal or external command,
operable program or batch file.
'.\ze620kl_flash_raw.exe' is not recognized as an internal or external command,
operable program or batch file.
""""""""""""""""""
"UPDATE FAILED !!"
""""""""""""""""""
" "
Press any key to continue . . .

You need to be on android 9 firmware to flash this. Go back to it by flashing Q-P ......2002.120.zip. Then run this
 

Gaabzrzi

Member
Dec 7, 2015
31
6
hello everyone, this procedure serves to re-lock the bootloader and remove the unlocked device warning, so it comes back from the factory?
 

deathfalls

Senior Member
May 3, 2012
436
61
PLEASE HELP! my phone os is corrupted, i have an error when i do this tutorial. please help
 
Last edited:

klushyer

New member
Sep 15, 2020
2
0
need help

I have a small problem, I can't access the fastboot mode of my cell phone, when I hold the + vol and power, it goes to the "CSI Fastboot" mode, my cell phone has TWRP installed, I installed a rom on it, but it doesn't come out from "ZENFONE"
 

GiacomoPasc

New member
Nov 12, 2020
2
1
Can't flash the raw image

hello. I have a problem. I can't flash the Raw image in Fastboot because I get this error.
0
'.\ze620kl_flash_raw.exe' is not recognized as an internal or external command,
operable program or batch file.
'.\ze620kl_flash_raw.exe' is not recognized as an internal or external command,
operable program or batch file.
""""""""""""""""""
"UPDATE FAILED !!"
""""""""""""""""""
" "
Press any key to continue . . .

I tried to flash on the system partition "Q-P ......2002.120.zip" but It doesn't change anything.
Can you help me? Thanks...
 

Redmamba

Senior Member
Jun 18, 2018
98
5
Samsung Galaxy A10
hello. I have a problem. I can't flash the Raw image in Fastboot because I get this error.
0
'.\ze620kl_flash_raw.exe' is not recognized as an internal or external command,
operable program or batch file.
'.\ze620kl_flash_raw.exe' is not recognized as an internal or external command,
operable program or batch file.
""""""""""""""""""


"UPDATE FAILED !!"
""""""""""""""""""
" "
Press any key to continue . . .

I tried to flash on the system partition "Q-P ......2002.120.zip" but It doesn't change anything.
Can you help me? Thanks...

Are you in android 9? If you extract the zipped raw file connect the mobile phone the bootloader to the PC recognize the mobile phone and click on the .bat file
 

GiacomoPasc

New member
Nov 12, 2020
2
1
Are you in android 9? If you extract the zipped raw file connect the mobile phone the bootloader to the PC recognize the mobile phone and click on the .bat file
I don't know If I am in Android 9,because I flashed the zip Update of Android 10 in TWRP and later I flashed the Evolution X rom(stuck on boot animation).
After rebooting the phone I was not able to access the recovery (It rebooted in Fastboot).
Now After trying many times, the recovery Is not accessible and when the mobile phone tries to boot it reboots in Fastboot Mode.
 
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  • 5
    Be careful. If you do something wrong you may damage your phone. Doesn't work with Android 10 Firmware. You need to go back to Pie to be able to flash.
    You need raw firmware. You may not find the latest version. I've found V16.0615.1903.92.
    https://drive.google.com/uc?id=16sY03_C14qqqldYjyurH_hyTgYEASEau&export=download(This is from mtkdevelopers.com)
    1- Download the zip file and extract it.
    2- Go to Fastboot.
    3- Run ze620kl_auto_flash_raw.bat from zip file you extracted.
    4- It will take up to 5-7 minute and will reboot automaticly.
    5- Then you can install latest update from https://www.asus.com/Phone/ZenFone-5-ZE620KL/HelpDesk_BIOS/.
    If you want to re-lock bootloader follow these steps:
    ## First you have to install stock firmware of course.

    1- Go to recovery(This is stock of course after installing stock firmware). Wipe cache then format data. When you enter reboot option press Volume Up for bootloader(try not to boot into system. If you boot you have to wipe cache and data again)
    2-
    Code:
    fastboot oem reset-dev_info
    and
    Code:
    fastboot oem force-reset
    3- Then reboot. Now you are in stock firmware and locked bootloader. Your bootloader warning should be gone. Still you can't get ota updates because your Imei number blacklisted. You have to install updates from zip file you get from Asus's website.
    For locking bootloader, credits to @lopestom
    1
    After downgrading I installed firmware UL-ASUS_X00QD-ASUS-15.0619.1810.73-1.1.26-user.zip but I can't update to android 9 pie, error 7 or 21, or from sd or from internal memory

    This is V16.0615.1903.92. So after flashing stock firmware you should update to newest versions. You are trying to flash oldest firmware v15.0619.1810.73-1.1.26. You can't do that. Flash the stock firmware again then update to V16.0615.1910.112. If V16.0615.1910.112 can't insalled because it's to new try V16.0615.1905.102 then V16.0615.1910.112.
    1
    Are you in android 9? If you extract the zipped raw file connect the mobile phone the bootloader to the PC recognize the mobile phone and click on the .bat file
    I don't know If I am in Android 9,because I flashed the zip Update of Android 10 in TWRP and later I flashed the Evolution X rom(stuck on boot animation).
    After rebooting the phone I was not able to access the recovery (It rebooted in Fastboot).
    Now After trying many times, the recovery Is not accessible and when the mobile phone tries to boot it reboots in Fastboot Mode.
    1
    friend you managed to solve the problem, I'm the same way answer me
    Is your phone in fastboot mode when you're loading the raw program?
    1
    Is your phone in fastboot mode when you're loading the raw program?
    yes, it is locked only in fastboot mode