My Nexus 7 (2013, 2nd gen) worked fine in plain vanilla form for years. Suddenly the boot stuck at "Google". I tried booting into recovery mode and saw
failed to mount /cache. Erasing cache from the recovery screen did not help. I tried WugFresh Nexus Root Toolkit v2.1.9, and it froze at the unlock step. I tried Fastboot and it also froze at the unlock step with the following response:
platform-tools>fastboot oem unlock ... (bootloader) Unlocking bootloader... (bootloader) erasing userdata...
fastboot format cache and
fastboot erase cache but they both just hung at
It appears that I cannot reflash the Nexus 7 back to factory fresh because it is failing to unlock the tablet or possibly rewrite memory in any way.
Is there any stronger method I can use to wipe out this tablet and reload it back to any usable form? Or fastboot commands I haven't tried yet? Or something completely different?
Failing recovery, is there anything useful I can do with a nearly new looking 7 inch tablet or its component parts?
Today I tried adb sideload of the latest fresh image. It looks like my tablet is mostly choking on:
E: failed to mount /cache (Invalid argument)
Is there a way to destroy and recreate the cache as opposed to erasing or reformatting an existing cache?