I rebooted (by holding power button for long time) and then it decided to wait at the google screen, then to black screen and reboot, constantly.
I thought re-flash it, that'll fix it, nope would not flash ANY rom, I thought it might be an issue with TWRP so I tried to update it, no joy! Fastboot would go through the motions of flashing the recovery but it ever ever happened.
I decided to boot the newest TWRP without flashing and still no joy flashing ANY rom. So I decided to try wiping the device, I can't. it seems like the whole device is write protected. Yes it is unlocked!
Can anyone suggest what to do next, I miss my N7!
Thanks in advance for any help you can provide.