I have an sony xperia U and a about a month ago I upgraded it to android 4.0
But my phone has become really slow so I want to downgrade it to the original version.
I have tried several attempts and it's really hard to find a methode that works, and when I found one, the programs were al filled with virusses or giving errors (and yes, I read and did each step exactly like described)
So it's driving me crazy!
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