A little while ago I downgraded my XPERIA U to Android Version 2.3.7 , because it'd been malfunctioning with 4.0.4.
Ever since I downgraded it, my PC has lost the ability to recognize the phone's memory.When I connect the phone to PC through USB cable, at the moment of plugging , Sony PC Companion shows a little box at the bottom right corner of the screen , giving the message "Wait for the device to get connected" ,
soon after it says "My Sony XPERIA U (ST25) is connected" , but once I click on Launch Sony PC Companion , it shows the connection error with the 4-step guide.
I followed the guide but that didn't do any good.
Any tips, anyone?