I bought my Nexus 7 FLO WiFi version 2 days ago with JB 4.3 and started working on it. Unlocked bootloader, flashed TWRP, rebooted and installed the OTA 4.4.2 update, then rooted it with ChainFire's auto-root batch script. Tried to enter recovery last night to flash the Qualcomm-optimized Dalvik & Bionic libraries and discovered that I've got official recovery back?! I mean, there's a dead Droid there instead of TWRP...
Anyway, I don't mind that much if I don't have a custom recovery installed (except for the fact that I can't nandbackup my tablet...and that I can't flash stuff on the whim) but that's only if I can still receive OTA updates.
So, my questions are:
1. How do I verify if I can (or can't) receive OTA updates?
2. What exactly breaks the ability to receive OTA updates (besides the obvious flashing of a different-than-stock ROM)?
3. If I reflash TWRP and some other customizations, will it screw me out of OTA updates?