I recently tried to update my os to 4.1 on my galaxy S2 i727 using Kies. halfway through the download it said "error downloading" i disconnected the phone and and its stuck on screen showing a phone icon on the left Exclamation point in the middle and computer icon on the right telling me to select recovery mode in kies. Well did all that the problem is now my computer wont recognize my phone when i plug it in. its says "usb device attached to computer has malfunctioned please remove device and try again" no matter how many times I try windows wont recognize the device.