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Uliwooly

as always thanx XDA forum

Rooting "might" void your warranty. I'm not responsible if anything happen to your phone (nothing should go wrong,, if something do go wrong, just repeat the whole process).

uliwooly-wooly

How to Use Flashtool

https://www.youtube.com/watch?v=i9VnDu60smE

View solution in original post

uliwooly-wooly

1st Backup everything

2nd Backup your current firmware

3rd Follow the steps bellow to flash your phone (remember I'm not responsible if anything happen to your phone and this "might" void your warranty)

4th enjoy

it's useful to have

Sony Update Service (SUS)

http://www.sonymobile.com/gb/tools/update-service/

How to backup Xperias

http://talk.sonymobile.com/thread/36355

Download FlashTool

http://forum.xda-developers.com/showthread.php?t=920746

or

http://androxyde.github.com/Flashtool/

uliwooly-wooly

How to create a backup of your original firmware

you must have SUS

run SUS and repair your phone

go to C:\Program Files\Sony Ericcson\Update Service\db\13740270\blob_fs\

Copy the 2 largest files you'll find there to C:\Flashtool\anynameyoulabeled it as

Run FlashTool

Click Advanced > Decrypt Files

Source folder : C:\Flashtool\anynameyoulabeled it as

From Files, select all (Click & Ctrl + A) and click -> to move the 2 files to Files to convert

Click OK

Wait patiently till it finishes...

From Folder list, select all (Click & Ctrl + A) and click -> to move the 2 files to Firmware content

If it is ICS, tick the Disable Final Verification Check

13) On Device write the model [ex. Xperia Neo V (MT11i)], on Version write the firmware version and/or the Android version [ex. 4.1.A.0.562 (ICS_4.0.3)], on Branding write the region and your name if you wish.

Click OK

On Device Selection choose the device it is for (ex. MT11i)

Wait very patiently...

When it finishes the .ftf file is located on C:\Flashtool\firmwares

How to backup Xperias

http://talk.sonymobile.com/thread/36355

uliwooly-wooly

FTF files:

ALL FTF

Xperia Z1

Lollipop

4.4

C6902 14.3.A.0.681 IN

C6903 14.3.A.0.681 Fr

4.3

14.2.A.1.136

14.2.A.0.290 (6902)

14.2.A.0.290 (6903) superior auto 20mp

4.1-4.2

14.1.G.2.257

Variety of firmwares

14.1.G.1.534 .531 .526 .518

Xperia Z

C6603

4.4.2 10.5.A.0.230

4.3 10.3.1.A.2.67

4.2.2 10.3.1.A.0.244

or

Here

4.2.2

C6603

4.1.2 10.1.1.A.1.307

4.1.2 10.1.1.A.1.253

4.1.2 10.1.A.1.350

4.1.2 10.1.A.1.434

or

Here

Xperia Z C6602

4.4.2 10.5.A.0.230

4.2.2 10.3.1.A.2.67

4.2.2 10.3.1.A.0.244

Xperia ZL C6503

Xperia ZR

Xperia Z Ultra

4.3

14.1.B.1.532 Generic MEA/Arabic

4.1-4.2

C6802

14.1.B.1.526

14.1.B.0.461 & 14.1.B.0.471

Xperia Z Compact

Xperia SP

Xperia L

15.0.A.2.17

Xperia E

C1604 / C1605

11.3.A.2.13

Xperia M / M dual

Xperia C

Xperia Tablet Z

SGP311 10.1.C.0.370

uliwooly-wooly

How to use flashtool

Install it and you will see 5 folders

Custom

Drivers

Firmwares

Loaders

X10Flasher_lib

take the firmware to the "Firmwares" folder

click on Falsh

Press Ok

it will ask you to connect your phone on Flashmode (turn off your phone, press the Volume Down, then connect the USB) press OK

This is an step by step guide

http://talk.sonymobile.com/t5/media/gallerypage/user-id/202/album-id/2677

How to backup Xperias

http://talk.sonymobile.com/thread/36355

uliwooly-wooly

if you want to revert/downgrade there are 2 options

1) take your phone to a Sony Service Center

http://www.sonymobile.com/gb/support/contact-us/

or

2)

Xperia Z

Xperia ZL

Xperia SP

Xperia L

uliwooly-wooly

Rooting

w/o unlocking the bootloader

Xperia Z root

http://forum.xda-developers.com/showthread.php?t=2327472

Xperia SP root

http://forum.xda-developers.com/showthread.php?t=2329208

http://forum.xda-developers.com/showthread.php?t=2186368

Warranty

From sony mobile developers

http://unlockbootloader.sonymobile.com/instructions

Warning! If you perform this step, you will unlock the boot loader.This may void your warranty and/or any warranty from your operator. If you still want to unlock the boot loader of your phone, enter fastboot.exe -i 0x0fce oem unlock 0xKEY, where KEY is the unlock boot loader key you got in the beginning of this instruction. The boot loader should now be successfully unlocked.

from Sony mobile

Warranty Document

http://www-support-downloads.sonymobile.com/common/warranty_phones_US_12.pdf

Nor does this warranty cover any

failure of the Product due to accident, software or hardware

modification or adjustment, acts of God or damage resulting

from liquid

in other words it "could" void your warranty

How to backup Xperias

http://talk.sonymobile.com/thread/36355