im having the same problem, i put in the usb cable and it synqs or watever but when i take it off it goes into flash mode and wont go back till i put the cable back in. i tried everything but wont, and this started since the *expletive deleted* update
Mine still doesn't do it when I do that. >.>
Strange i never had suck issues whatsoever. But yes since restart seems to work try that. Also there is anither thing you can try but it requires opening up your controler. just open it up and hit reset in it. it will erase your sync data and you can pair it again using USB.