I have problem to update firmware in my TV. I have been trying to update it via online update and USB. The USB method is restarting my TV while file coping progress bar is updating, when trying via Sony Online Update service 2123 message is shown. Can anyone can help me?  My USB stick is 8G flash memory formatted to FAT32. I have tried to restart to factory settings. By storage restart function in settings, noting seems to be working. 

Is there any specific USB need to update TV.