Why do we need to unlock bootloader?
You want an explanation!
Go here :- https://www.quora.com/What-is-the-meaning-of-an-unlocked-bootloader-in-mobile-phones
So far the note says that there are two methods to do it and both I have tried and it works.!
This tutorial is for Asus Zenfone Go ZC500TG/Z00VD users only. On the web site I want to share the batch auto tool that I have created. So, without wasting your time, lets go to the tutorial how to unlock your bootloader..
The first thing to keep in mind is this tutorial is only for stock ROM firmware V36 / V25 and below.
If for stock ROM firmware V47 and above is impossible because it has no option to enable OEM unlocking.. So, it's easier if you are in stock v36 firmware stockrom.So, the first step you should do is to download the file below first.
Here the download link :-
http://brisktopia.com/8SG4
First method :-
How to run this tool?
Download and extract at your PC Desktop/Laptop. At your smartphone, go to phone setting and scroll down, search About phone option and under Build number try tapping 7 to 10 times for enabling Development options. Try to back again, this time we go to Development options. Under OEM unlocking and under USB debugging, please enable! Open AutoBootloderTool.exe by double-clicking your mouse and then plug your USB cable into the phone and follow the instructions as stated.
Picture below is an example:
Second method :-
This is a second method to unlock your bootloader, as many have not been able to use the available way there before. After it is identified that this device has 2 different bootloader secure, so I assume that this way can work and it is true. First you need to download 3 files and 1 tool and this file can be saved for emergency, if your phone is in BOOTLOOP or DEAD PHONE.
.
Download this files first :-
SPFT :-
https://androidmtk.com/smart-phone-flash-tool
Drivers ALL :-
http://gsmusbdriver.com/asus-zenfone-go-zc500tg
Image.zip V25 :-
http://www.mediafire.com/file/817ffiv39flqf7i/ZC500TG_Kernel.zip
ZC500TG_Z00VDWW36_StockROM.zip :-
Ignore this if you already have this file.
http://dlcdnet.asus.com/pub/ASUS/ZenFone/ZC500TG/UL-ZC500TG_ASUS_Z00VD-WW-12.1.0.36-user.zip?_ga=2.256372043.1582583764.1496946073-59042751.1496946073
Download all the files mentioned above and extract them at your PC desktop / Laptop .Install your drivers first!. Okay, let's go :-
Part 1 (Flashing kernal)
**************************
1.Open SPFlash Tool and Run as Administrator.
2.Click under scatter-loading file find your scatter Image.zip.
3.Wait until uploading all your firmware done.
4.Power off phone. (reinsert your battery)
5.Still at SPFlash Tool check all your file under tick box.
6.Below Authentication file columm you will see method option.
7.Choose Format All + Download.
8.Then click GREEN download button.
9.At your phone press vol down button. (off phone)
10.Then plug-in usb cable.Wait until the pc detects your phone.
11.And the procces will begin.Wait until it's done. (GREEN RIGHT MARK)
12.When its done..unplug cable pull out your battery and reinsert it back.
13.Power ON your phone..
14.DONE !!..
Part 2 (Flashing official firmware)
*************************************
1.Begin Update procces.
2.Put your firmware at your sdcard. (ZC500TG_Z00VDWW36.zip)
3.Power OFF phone.
4.Go to Preloader Mode by pressing Vol Up + Power together.
5.And preloader menu mode will be appeared.
6.Choose recovery. (Vol Up for scroll/Vol Down for pick)
7.And the green robot will be appeared.
8.Now press POWER BUTTON FIRST and vol up together.
9.Recovery mode will be appeared.
10.Now pick apply update from sdcard. Find your ZC500TG_Z00VDWW36 firmware.
11.Then flash it. Wait until it's done.
12.Then choose Reboot.
13.DONE !!..
Part 3 (Unlocking your bootloader)
*************************************
With this, after everything is complete, Now you can unlock the bootloader like the tutorial above.
Picture below is an example:
SPFT
Manual guide to unlock the BOOTLOADER.
Open command prompt under folder ADB.
Boot phone into fastboot mode.
Plug-in USB cable into device.
At command prompt type :-
fastboot devices (show your device serial no.)
fastboot oem unlock (unlocking)
Okay, that's all right now from my tutorial and hopefully you will succeed!
Sorry, if my language is not good. Hope you understand.
Good Luck!!
ATTENTION :
I WILL BE NOT RESPONSIBLE ABOUT ANY DAMAGE FOR YOUR SMARTPHONE,
RISK IS IN YOUR OWN RIGHT.
