After updating my Android OS, My Nexus 7 2013 shut down and will now only get to the Google logo on my screen. I have tried factory restoring it (Via recovery mode), but just received the message below about it being unable to mount cache E:failed to mount /cache (Invalid argument) E:Can't mount /cache/recovery / log E:Can't open /cache/recovery / log E:failed to mount / cache (Invalid argument) E:Can't mount /cache/recovery/last_log E:Can't open /cache/recovery/last_log E:failed to mount /cache (Invalid argument) E:Can't mount /cache/recovery/last_install E:Can't open /cache/recovery/last_install E:failed to mount /cache (Invalid argument) I have spoken to a professional repair company and I'm being told "It is usually caused by updates corrupting. The only way at the moment is to change the mainboard. We are trying to find a fix but not there yet." Please log on and let me know how many of you area also getting this issue, as i'm sure if there is a lot of us then we have a strong case for getting our tablets repaired by Google.