How to manually update, root, downgrade 2012 Xperias

[uliwooly-wooly]

How to manually update 2012 Xperias to Android 4.0.4

Click on one of the topics

• Prepping
• Back up current firmware
• Flashing
  
• Downgrade
• Video tutorial on flashing
• Warranty & Rooting

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).

[ryan515]

so this ftf file is official sony ics update?

[Uliwooly]

yes it is, it is NOT a custom ROM

[Uliwooly]

Xperia S new Build number update

6.1.A.2.45

[Uliwooly]

yes you can

[Uliwooly]

yes it is

[Uliwooly]

if you could post the links or PM with the links I'll add them to the main thread

[korenisko]

I created ftf file from my branded firmware, but device selection window not apeared to choose loader. All went fine, flashtool finished with no errors... Can I use this backup with no problems in future? Thank You...

[Uliwooly]

Xperia P new update 6.1.B.0.550

[Uliwooly]

New rooting method for NXT series with either

Locked or Unlocked bootloader

[3eb]

Uli,

Any word on Xperia SL firmware availability for the Xperia S yet? As you said the only difference seems to be greater clock speed.