5.01 and 5.02 made my tablet totally unusable so decided to try reinstalling factory image KK 4.4.4. All very good except I forgot to unblock the thing. Now it's stuck on the Android robot screen with the four cmd options Power Off, Start, Recovery etc. When trying to launch the bootloader i get rebooting failure in the top left hand of the screen. All the tablet will do is power off. I suspect I have wiped the OS, so how do I reinstall the OS?
When connected to my pc the N7 isnt recognised so the ADB isnt working so how the hell do I put anything on it to fix it?
Cheers

You might have to face up to having bricked it.

tbh you really need to go to http://www.xda-developers.com/ and have a dig around there.

You can try http://www.wugfresh.com/nrt/ to see if this will communicate with your device.

As tealady suggests use wugfresh then Flash Stock + Unroot but make sure the option softbricked/bootloop is selected. Worked on mine when I did this.