FYI: rooting and twrp
Just an FYI to new nexus 7 2013 users; when flashing twrp so you can root your tablet, make sure you reboot before flashing su. When you reboot TWRP asks something about you not being rooted, install binaries? Click NO! Reboot, then flash su through TWRP as the directions say. Otherwise, risk getting stuck in a bootloop, then after you fix it, having su not work correctly like I did. It took a while to figure out how to fix it...
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