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Please read this if you considering unlocking the boot loader or rooting your phone.
Please note that you may void the warranty of your phone and/or any warranty from your operator if you unlock the boot loader. You should only unlock the boot loader of your phone if you are an advanced user with good knowledge of the technology and risks involved.
For more information go here http://unlockbootloader.sonymobile.com/
Please also note
The Sony Xperia support team will not be able provide any support, related to unlocking the boot loader or rooting your phone.
We also recommend you to read the below blogposts.
Sony Xperia support team
2013-03-24 09:19 AM
Do I need to unlock my bootloader to flash my Arc S to 4.0.2.A.0.42? I want to root my Arc S and install custom ROM on it.
2013-03-24 10:04 AM
sir nabeel can i flash the xperia v firmware to my xperia acro s??
2013-03-24 06:50 PM
DuleJovanovski Yes, you may loose the warranty
*VIC* No you don't need to unlock it
jojonz Nopes mate, don't do that ever if you love your phone .
2013-03-25 10:16 PM
New Update: Upon request from users, i've created a facebook page where you can get updates on whatever happens here, new firmwares, new android versions, new rooting methods etc. Here's the link
2013-04-01 12:40 PM
@Nabeel: I am an xperia U ST25i user... the firmware for ICS is given for the st25...Can i use this firmware to my xperia u st25i for ICS update?
2013-04-01 07:46 PM
2013-04-02 07:45 AM
I cant find the firmware you mentioned in your post. i will be very helpful if u give me the link of firmware for ICS ST25i...
2013-04-02 08:10 AM
2013-04-02 05:53 PM
@Nabeel: i cant Findd the driver for my xperia u st25i.. i have installed the driver which is given on the flashtool folder...but when i connect my phone the flashtool says it cant find any driver so the phone get disconnected. So what can i do? Please help me