mobile

I accepted the 5.1 OTA, it seemed to download fine, rebooted to install it, and it failed at around 20% or so with this log:


Since then, that's all I get when I boot it up. I don't have ADB Debugging enabled, so I figured the easiest way to fix it was to flash back to stock, but I can't get it the bootloader to unlock. I can get to the bootloader, and fastboot recognizes it with the correct serial number, but fastboot oem unlock keeps failing with this:


I've tried all the USB ports on my computer and several different cables, but the result is the same. I've been banging my head against the wall for a couple weeks now on this, tried a couple different tools, but it all keeps failing at the same spot because the bootloader just won't unlock. Is there any hope of fixing this, or am I in the market for a new tablet?