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Guide [for beginners] - How To Unlock Bootloader via Flashtool

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sid.8491
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(Last edited by sid.8491; 3rd November 2012 at 03:14 PM.)
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Phone Guide [for beginners] - How To Unlock Bootloader via Flashtool

I am assuming your phone can be bootloader unlocked and you have unlocking key from sony.
If you don't know then refer to this post http://forum.xda-developers.com/show....php?t=1527159

WARNING: IT WILL WIPE YOUR PHONE DATA SO MAKE BACKUP

1. Install Flashboot and Fastboot drivers of Flashtool (setup file will be on C:\Flashtool\drivers or similar place).
2. Turn on your phone, and connect with usb debugging on.
3. Go to Plugins-> Bootloader Unlock option, start it.
4. Now it will ask to disconnect your phone and reboot in FLASHMODE.
5. Again reboot your phone in FASTBOOT mode.
6. It will show a window with your IMEI number, insert your unlock key and click "unlock".
7. The device will reboot and you are done!

FLASHMODE
You can get into flashmode by pressing specific hardware key and connecting phone to pc via USB.
It will glow GREEN LIGHT on led if done correctly.

Hardware key-
Back Button (X8, X10, X10 mini, X10 mini pro, Play, Arc, Arc S, Neo, Neo V, Pro)
Volume Down Button (Xperia U,P,S,Sola)

FASTBOOT Mode
You get into fastboot mode by turning off your phone, then pressing the fastboot mode key button, and connecting the USB to your phone. Done correctly and you should see a BLUE LIGHT on the power button.

Hardware key-
Menu Botton (Xperia Arc, Arc S, Neo, Neo V, Pro)
Volume Up Botton (Xperia U,P,S,Sola)
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Xperia Neo V --> Xperia P --> Google Nexus 4
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Karim Kahale
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Should the phone be turned off in flashmode??
PHONE: HTC One M7
ANDROID VERSION: 4.4.2
KERNEL VERSION: ElementalX-13.0
BASEBAND VERSION: 4A.23.3263.28_10.38r.1157.04D
BUILD NUMBER: Android Revolution HD 51.0
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sid.8491
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Quote:
Originally Posted by karimkahale View Post
Should the phone be turned off in flashmode??
yes, turn off your phone then connect USB while pressing specific key.
same applies for fastboot method
Xperia Neo V --> Xperia P --> Google Nexus 4
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Karim Kahale
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When I am installing drivers, I am getting "don't install or install anyway", I choose install anyway but the same window comes up again. Should my phone be turned on, off or in flashmode or something?
PHONE: HTC One M7
ANDROID VERSION: 4.4.2
KERNEL VERSION: ElementalX-13.0
BASEBAND VERSION: 4A.23.3263.28_10.38r.1157.04D
BUILD NUMBER: Android Revolution HD 51.0
Press The THANKS Button If I helped Somehow
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sid.8491
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Quote:
Originally Posted by karimkahale View Post
When I am installing drivers, I am getting "don't install or install anyway", I choose install anyway but the same window comes up again. Should my phone be turned on, off or in flashmode or something?
it asked me 3-4 times and i chose "install anyway", and phone doesn't need to be connected while installing drivers.
Xperia Neo V --> Xperia P --> Google Nexus 4
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Karim Kahale
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I got an error in last step : Failed (remote: oem unlock failed ). This happened to me too when i used the official way to unlock my sony xperia p. Can someone help?
PHONE: HTC One M7
ANDROID VERSION: 4.4.2
KERNEL VERSION: ElementalX-13.0
BASEBAND VERSION: 4A.23.3263.28_10.38r.1157.04D
BUILD NUMBER: Android Revolution HD 51.0
Press The THANKS Button If I helped Somehow
 
sid.8491
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Quote:
Originally Posted by karimkahale View Post
I got an error in last step : Failed (remote: oem unlock failed ). This happened to me too when i used the official way to unlock my sony xperia p. Can someone help?
did u check that your device can be unlocked or not?
Xperia Neo V --> Xperia P --> Google Nexus 4
 
Karim Kahale
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Yes I checked, it can be unlocked
PHONE: HTC One M7
ANDROID VERSION: 4.4.2
KERNEL VERSION: ElementalX-13.0
BASEBAND VERSION: 4A.23.3263.28_10.38r.1157.04D
BUILD NUMBER: Android Revolution HD 51.0
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MySteRi
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If you have installed Flashtools and its drivers correct you shouldn't get any driver prompts when plugging the phone in

Assuming you did a default install browse to C:\Flashtool\drivers and execute the drivers file. Make sure you select the drivers for you phone ie "Xperia U" and scroll to the bottom of the list and select Flashboot and Fastboot drivers. From what I have seen so far most people are not installing these 3 drivers.

karimkahale: I would go back to the Sony website and get your unlock code again. Maybe you entered some wrong details...
 
Utkarsh-ezzo
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Please help me out,
when I am trying to install fastboot drivers from flashtools drivers folder, I am getting an error saying driver installation failed.
My os is windows 8 pro 64bit..My phone Xperia U (ICS)
What should I do.
That TUNA has evolved into a MAKO.....
Xperia U >> S advance >> Canvas2>> Galaxy S>> Galaxy Nexus>>Nexus 4

Tags
bootloader unlock, flashtool, unlocking
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