Hi everyone, I have a nexus 7 2012 wifi, it boots well then three or for minutes after that it auto reboots and the loop of boot and reboot happens forever. I have tried : - setting data to factory reset : fail, maybe no enough time. - Use Recovery to wipe data : the proccess complete but nothing was wipe. - Use NRT 2.1. to root device : but fails at step UNLOCK. Please helps me to fix my nexus 7. thank so much, thanhcuong.