In fact, any time I flash anything, it appears to work, but doesn't actually do anything. I tried flashing a different ROM and no dice. I tried accepting the official 4.4.2 update and again, looked like it flashed, but was still 4.4 when I rebooted.
So I thought I'll just plug it into my PC and re-root and maybe flash everything if need be. Except, when I plug it in, it 1) isn't recognized by my computer at all, no matter how many times I uninstall and reinstall drivers, and 2) the ADB connected icon doesn't show up, even when I enable it in Developer Settings.
So basically I'm dead in the water: I can't do anything via recovery, and if recovery is messed up, I can't do anything because it won't connect to my computer (Windows 7, SP1, 64 bit). I have a Mac running OS X Mavericks, if anyone knows some Terminal tricks for stuff.