downgrade Xperia SL

[reliefzero]

Hi, I have a question, If I downgrade my Xperia SL I lost all my Internal memory storage? 

there's in JB & i wan't downgrade ICS

[Uliwooly · Accepted solution]

you will lose your app data, sms, mms, call logs, apps

your pictures, videos, music should remain

[Uliwooly]

this is how to downgrade

How to manually update, downgrade, root 2012 Xperias

http://talk.sonymobile.com/thread/41609