Can I get some help with a problem updating my Android tablet?

[AC Question]

Problem After trying to uptade my android tablet!

Ok so the problem I have is the following:

I tried to uptade the android version in the configuration menu -> Device information -> Update system. So then a ~300 Mb update started downloading, after that it asked me to reboot the system to apply the uptade. I did it and then it booted, after that it showed me and android with a blue bar that seemed to be the update working, but after some time it showed me the following error:

FInding update package...
Opening update package...
Verifying update package...
Installing update...
set_metadata_recursive: some changes failed
E:Error in /mnt/internal_sd/adupsofa/update.zip
(Status 7)
Instalation aborted.

After that it just reboots automatically and starts the same thing again, producing the same error. The only thing that I can do is shut down the tablet, but as soon as I boot it, it starts the same loop again. I've also tried to enter in recovery mode but it just shows me "Finding update package... Opening update package... Verifying update package... Installing package..." and then the rest of the things that I put over, with no menu or options to make.

Does anyone have a solution for this? please help!