I searched but didn't find this issue. My phone seems to have lost root after the ota update. I still have the superuser app, but my root only applications say the phone isn't rooted, and I cannot get su access in the terminal emulator or in ADB. I attempted to re-root the phone but that has not worked. I could not go through the process to unroot the phone, as permission is denied when trying to mount the system. Can anyone shed some light on this?