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

Ashtrix

Senior Member
Dec 21, 2010
1,626
585
113
Bravo my friend, thanks a lot for the work after a long break let the flashfest begin !!
Worked like a charm !!

Enjoying my new Zenphone2 551 4GB edition :D
 

[email protected]'

New member
Aug 2, 2015
2
0
0
no asus logo at boot

I have asus zenfone 2 16/2 ww. i recently unlocked my bootloader and flash cm 12.1 with after 2-3 days my phone get turn off when i try to start no responce when i will connect to pc start showing battery like switch off there is no asus logo nothing directly started and shows the battery not booting system not in recovery only boots in bootloader what can i do now..??
 

KillerofJoy

Senior Member
Jul 27, 2013
421
350
0
Louisville
I received my sons Z00AD ZF2 yesterday and after some painstaking lessons in rooting, unlocking bootloaders, plus trying to add updates with the addtion of twrp, I have his phone completely updated with unlocked bootloader, firmware WW 2.19.40.22.. I did however unlock the bootloader on firmware 2.19.40.20 using this method.. stayed unlocked through update.. Now to root and add twrp..
 

DimeShake

Member
Mar 21, 2012
32
4
0
Washington, DC
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
 

themonyo666

Senior Member
Jun 19, 2015
148
3
38
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.
can u unlock also 500cl? please!
 

minzo

Member
Aug 6, 2015
8
2
0
Will this still work with latest 2.20.40.58?
Still a bit new here. If I want to, how can I relock my bootloader back?

Sent from my ASUS_Z00AD
 
Last edited:

troy5890

Senior Member
Jun 14, 2014
1,571
541
143
Will this still work with latest 2.20.40.58?
Still a bit new here. If I want to, how can I relock my bootloader back?

Sent from my ASUS_Z00AD
I don't think you can relock the bootloader yet. Once its unlocked, it stays unlocked.

Sent from my ASUS_Z008D using XDA Free mobile app
 

Ratedzelaya

Senior Member
Mar 27, 2012
91
21
0
I bricked my device but i fixed it with recovery. I previously had unlocked my bootloader before bricking my phone. Does the bootloader relock if you return to full stock. I can't tell because i flashed the black splash screen when i first unlocked the bootloader.
 

espeon

Senior Member
Mar 29, 2013
148
76
0
24
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
Also, something that isn't inherently obvious at first - fastboot will say that each flash 'fails', but ignore that and keep going.
 
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