I hope someone can help. I need to restore the original software on my SGP521 and tried to flash a .ftf with the Sony flashtool. I've got an unlocked bootloader and custom recovery installed. But when I connect my tablet to my pc and open the flashtool, I get a message saying 'no matching services' along with a yellow triangle. It recognises the device correctly though. Any suggestions?
Edit: Ok, so it seems that the Sony flashtool is only compatible with 511 and not the 521. Great, thanks Sony! How do I flash a tft then?