hi guys, i bought a Galaxy S II GT-I9100G two weeks back and everything was running good and i updated the firmware through the official site to DZKJ2 (Android ver. 2.3.6) and now when i connect my phone to my pc via usb it shows unknown device and i dont see the usb mount option on the drop down notication menu .. and now i am in total mess .. can only transfer files via wifi .. someone help me out .. havnt rooted my phone as yet .. but first this needs to be fixed in order to root the phone i guess ... H E L P