I upgraded from 7.1.1 to 7.1.2 two days ago and yesterday the back camera wont work and sometimes the front camera still works.. and the flash works all the time with special light app! some strange software bug i guess?!? the camera app just wont respond at all most of the time just cant flip back to the front camera if i press the button a few times 5-7 times.. Ive gone from 7.1.2 back to 7.1.1 but still the same problem (and i configured is as a new phone), so my question is there a way to dont know.. a special software reset? some magic to make me cameras work again!?