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I am using xperia zr i found problem in bluetooth i used to update my phone to 4.3 after that i faced the problem ..while i conversed with sony help center they told to repair the phone using pc companion ..so i tried to reair during the time of repairing it follows 5 steps in that install stage we need to follow some steps whisch is showing on the screen while i holding the down volume button and plugged the cable its not installing the software it just idle pls help for this
Download sony update service and try to repair with it.