4.3 OTA Update Install Fail With Motochopper Root 4.2.2 Google Nexus 7 I am using Stock Android 4.2.2 on Nexus 7 2012 Tablet. I rooted my tablet using the Motochopper Root. I was able to download OTA 4.3 Update using normal procedure on my tablet however, when I tried installing the update, it just stuck at the android guy with error at startup. I tried downloading the OTA update again as it just disappeared, however it is stuck at waiting to download. I tried Nexus Tool Kit downloaded Stock 4.3 OTA and tried to install it using ADB sideload command. However it gave an error and mentioned some error file and exited. Please Help me out . I also tried full unroot with SuperSu but it also did not work.
Download stock ROM from Google, and flash it.
To check correct version for your Nexus 7 2012, see this question.

Since it would now be stock, you'd have to root it again.