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hi guys need assistance pls , I have xperia Neo , on connecting to PC companion it told me my phone is upgradable to android 4 , i upgraded but my phone performance is very bad how to reinstate android 2.3.4 version any one have any ideas
thx
thx for reply , my guarantee is over anyway but this will not harm the phone by any means right ?
If you do all the steps carefully then not.
You can read the comments posted by users below 
hi nabeel i installed flashtool but dont know what to do , no steps available to follow pls advise what steps shoud i do thxx
Just see below the Downgrading to Gingerbread , steps are written below it
Follow them 
thx but didnt work
will stick to android 4 version thxxx for help
that doesn't make sense check this out
scroll down
http://talk.sonymobile.com/thread/38251
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I have purchased a sony xperia sp from local store at aurangabad on 23rd. on 24th a new update was downloaded, and i updated the software. since the n the screen is flickering and goinf blank. the phone is not usable as such. can sony help in any way to get rid of the problem.