Wednesday, October 17, 2012
Official Android 4.1.2 OTA update failed
I have rooted my Nexus 7 but not flashed any ROMs. The Android 4.1.2 is available. I go to apps to clear the Google Framework Service data cache and reroot the tablet to force getting the OTA update. When I try to install it, it runs and stucks on 20% along the progress bar with a spinning blue multi-faceted shape and a red warning triangle. Then the device just reboots back to completely stock Android 4.1.1 with no mods and no root.
How to fix official Android 4.1.2 ota update failed issues
* Make sure you have at least 90% battery for making it work successfully.
* Doing a hard reset by tapping Settings > Backup & Reset > Factory Data Reset and pressing "Reset Tablet".
* Download the stock 4.1.2 image from Google developers web site and flash it.