I have an Xperia Arc which i have Rooted a year ago. I have deleted everything on my Xperia by using 'Factory Data Reset', This was not a good idea at all. And now, USB mode does not work in the computer. Charging is fine, i wanted to update my 'GingerBread Firmware' to 'Ice Cream Firmware'. If Updating the firmware is a bad idea, then that is fine to not update. I have attempted these different types of cures and none seem to work:- 1. Replace USB with another 2. Uninstall USB Driver Controllers 3. Mass Storage The USB does not recognize but detects (As it says on PC Companion) Any these options do not seem to work, if any advice or suggestions, please comment below. Thank You.