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Hi, my cousin was playing around with my phone and tried to unlock it using random passwords. The phone showed that she had typed in wrong passwords 20 times and then it asked me for my hint questions. Unfortunately I had forgotton the answers so now my phone is locked. Please does anyone know how to unlock it??? Thank you
Solved! Go to Solution.
Update Service (SUS)
http://www.sonymobile.com/gb/tools/update-service/
http://www-support-downloads.sonymobile.com/Software%20Downloads/Update_Service_Setup-2.11.12.5.exe
for future reference
Alternatives on How to backup Xperias
The only option you have is SUS. You will lose, however all your data since you don't have access to the 'back up' option. Only your contacts are saved from your google account...
Hi, thanks for your reply. I installed pc companion on my pc, went to the repair phone option and it installed Android 4.0. However, it still asked for the security question, so is still locked. 
By doing that have I performed SUS???
Update Service (SUS)
http://www.sonymobile.com/gb/tools/update-service/
http://www-support-downloads.sonymobile.com/Software%20Downloads/Update_Service_Setup-2.11.12.5.exe
for future reference
Alternatives on How to backup Xperias
FANTASTIC!! I used the first link and Xperia is now UNLOCKED!!! Thank you for your help 
Thank you so much for your answer...phone is now unlocked!!:smileylaugh: