[TOOL] One-Click bootloader unlock (no root required)

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UserName_K

Senior Member
Nov 10, 2014
220
14
hi if anyone have problem with this tools can try in this way

0-move the files in tools folder (in ZF2_one_click_unlock_by_sorg_v2.zip)to adb folder (in my case C:\adb)
1- reboot in fastboot mode
2 - insert the following commands
Code:
fastboot oem start_partitioning
fastboot flash /tmp/start.sh unlock1 
fastboot flash /tmp/recovery.launcher unlock2
fastboot flash /system/bin/logcat unlock3 
fastboot flash /tmp/unlock unlock4 
fastboot oem stop_partitioning
3- reboot and check if splash screen become inverted

in my case worked :good: tested on ze551ml (deluxe edition) with android 5.0 fw 2.20.40.174 pre-rooted (i've follow this step for root system http://forum.xda-developers.com/zenfone2/general/asus-zenfone-2-flashing-recovery-mode-t3096596)

just for clarity my problem was this:
Code:
start unlock_one_click_v2.bat
in fastboot mode
Starting unlock...
Done.

Bootloader should do the rest unlocking actions
and then will reboot and become unlocked
if boot screen become inverted.

Press any key to continue . . 
But bootloader was still locked



I hope it is helpful ;)
 
Last edited:

Sajilpopz

Member
Dec 16, 2016
11
0
Can't unlock bootloader

I can't unlock my boot loader by the unlockerapp and all by this method,after completing the unlocking one click unlocker shows press any key to continue and it closed by pressing any key.but phone still asking the bootmenu asking start fast boot,when I using the apk it closed automatically,my version is marshmallow 21.40
 

ablackswan

Member
Mar 7, 2011
12
2
Linux Instructions

Thanks, Sorg! Worked great on linux with 2.19.40.22. Just unzip the tool in a new directory and cd to it. Here's the important bits from the .bat:

Code:
$ adb reboot bootloader

Wait for bootloader and verify fastboot sees it:
Code:
$ fastboot devices

Start oem partitioning, flash the files, and stop partitioning. The device will restart after the stop_partitioning command.

Code:
$ fastboot oem start_partitioning
$ fastboot flash /tmp/start.sh tools/unlock1
$ fastboot flash /tmp/recovery.launcher tools/unlock2
$ fastboot flash /system/bin/logcat tools/unlock3
$ fastboot flash /tmp/unlock tools/unlock4
$ fastboot oem stop_partitioning


Thx for the tips ;)
(I know it's been a while but i just decided to go forward)
 

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  • 121
    I've made simplier way to unlock the bootloader of ZE551ML/ZE550ML.

    Update!
    Version 2.
    Now it's not required to flash/downgrade droidboot.img. But you still need to flash one of compatible ROM.
    Currently compatible versions are:
    For ZE551ML: v2.19.40.18, v2.19.40.20, v2.19.40.22 and future newer versions unless opposite mentioned.
    For ZE550ML: v2.19.40.12, v2.19.40.13, v2.19.40.23 and future newer versions unless opposite mentioned.

    For example, you can flash full ROM v2.19.40.22 and then use unlocker v2.

    Just unzip everything from attached archive and then start unlock_one_click_v2.bat
    If you've enable USB debugging then phone will automatically reboot to bootloader and will unlock the bootloader. If you didn't enable USB debugging, then you need to reboot to bootloader manually (Turn the phone off and disconnect USB, then press Power+VolumeUp keys at the same time and keep it pressed till you see ASUS logo, then you may connect USB cable).
    Either way, unlock_one_click_v2.bat will proceed to unlock in fully automated way.
    If initial boot splash screen become inverted, then bootloader has been unlocked!

    If you don't like white boot screen, then you can flash original black one:
    http://forum.xda-developers.com/zen...-black-white-splashscreen-twrp-flash-t3141945

    Originally, it's developed for WW firmware but should work on any region.
    Works on CN firmware. Confirmed by @corrsea


    Based on unlock method discovered by
    @shakalaca
    Based on fastboot hack by @social-design-concepts
    9
    Important note for Stock ROM lovers:
    Although, unlocker v2 works with v2.19.40.22, there is no warranty, it will continue to work on future versions. It is up to ASUS decision. Unlocking process still requires several files from /system partition including special version of if.bin (/system/etc/firmware/if.bin). These files are still supplied with v2.19.40.22, but in the future they can be removed by ASUS together with disable of downgrade ability for if.bin.
    So, if you will flash future stock ROM through official update procedure (which includes bootloader update - from ifwi.zip) then you may loose unlocked bootloader! And of course, ASUS may completely block unlocking procedure (at least unofficial way).
    So, if unlocked bootloader is important for you, then
    1) unlock it ASAP while current firmware allows.
    2) don't use official updates. You need to remove all lines from update script containing ifwi.zip references and then flash through TWRP (you need to remove lines checking recovery version as well).
    8
    Version 1 (old)

    To use this version, you need to flash ROM not older than v2.19.40.18 for ZE551ML, and v2.19.40.12 for ZE550ML. And then downgrade (if required) droidboot to compatible droidboot.img
    Code:
    fastboot flash fastboot droidboot.img
    For ZE551ML, known compatible droidboot.img versions are 2.19.40.18, 2.19.40.20.
    For ZE550ML, known compatible droidboot.img versions are 2.19.40.12.
    4
    so we have asus flash tool?.....can u post link pls....and in case I end up soft bricking can I use flash tool to get the sock rom on my device again?
    AFT: https://mega.nz/#!LcwhXDLZ!PN1jzQ0hDotKotC5ckIP_GHVvh4qAQyvMzN8VK4fVBU
    RAW: https://mega.nz/#!7cA3nTZC!NiHOzVoVPdXAOVsQkjQT6umMMpfIeaxpE2es7lrwGpI
    4
    I've updated the OP, wrote compatible (as of today) versions. If even this is not clear enough, then i give up.