Originally Posted by stephenuk
anyone? i tried reflashing the ftf stock firmware with flashtool but now i get the message "software update has failed please make sure you phone is connected to your pc usb"
Try to update the OS either through sony's pc companion or Sony's update service. Both may tell you your software is up to date but there is an option to force update it anyway. This will bring your tablet back to stock.
If all of these fail, either your pc usb has a problem or your cable is bad or you need to reinstall Sony's usb drivers.