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One time poster
Posts: 1
Registered: ‎2013-07-14

downgrade firmware 11.2.A.0.31 to 11.2.A.0.21


     I have been having problems with the latest firmware version of xperia J - 11.2.A.0.31. The version is way too slow, slower than my older version. It even takes time to completely display my home and menu screen. So I want to  downgrade the firmware 11.2.A.0.31 to 11.2.A.0.21 (my previous version). I would wish to get help as soon as possible.


                                                                                                                                                                                             Xperia J user

Posts: 635
Registered: ‎2013-05-06

Re: downgrade firmware 11.2.A.0.31 to 11.2.A.0.21

Unfortunately you can not downgrade to previous version but if you are having problem with this phone software I recommend you to repair the phone software via Sony PC Companion:

Click on this link to get Sony PC companion:

Start PC companion, start "Support Zone", start "Update phone software" and click on "Repair".

Follow the on-screen instructions.