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Originally Posted by

I'm baffled ... it really seems like you're stuck in that no-man's zone where you can't do anything at all ...



I guess worst case you should still be under warranty?



It's too bad the Nexus devices don't have actual signed factory images; that's what you seem to need here.



What about trying to fastboot update (or update -w ) the whole parent tgz file (with the bigass hex number in the name) ? Or the tar that contains the zip?



Last resort, of course, would be a factory reset, but all that does is wipe userdata and the dalvik; basically returning you to "out of the box" condition with a boot (kernel) and a system (app), but nothing in cache, dalvik, or data; so the first boot sets all that up from scratch.



OTOH, you were able to format cache but NOT data, so maybe that's worth trying.



(if you're trying to save any data or apps you had on the tablet, I think you're beyond that point at this time)