Hello guys. My tipo is currently running CM10 final version. It was almost stable until last couple of days. It started lagging and app like instagram started freezing & crashing. So i want to flash stock rom. I have ftf file as well as zip file. But when i try to flash ftf via flashtool, i get error saying that "For 2011 devices line, be sure you are not in MTP mode", even though my phone is set in usb debugging mode. I even took nandroid backup of fresh stock rom, but when i try to restore i get md5 mismatch error. I dont know where to start from? please help me out!