I have two Nexus 7's 2013 and have never flashed any OTA Android release. This guy has it down like I have never seen it before. Very Simple. (follow his links) Keep everything in the same Dir: (see warning below) Both are now running Android 6, and it took less than a half hour for both. Yippee! I have not taken the P3P up yet maybe this weekend. How to flash Android 6.0 Marshmallow factory image on Nexus 5, Nexus 6, Nexus 7, and Nexus 9 Warning: If you have trouble up-dating your Firmware for the P3's don't try this. Hope someone finds this useful.