I have penta android tablet

[AC Question]

From last two months I have a problem in my tab after connecting a WiFi there is a short message display on display that is "sorry,Fotaupdate reboot file is not exiting, an unexpected error happened!

 

[B. Diddy]

Welcome to Android Central! "Fota" refers to firmware over-the-air updates. Did your tablet recently get a system update?

What's the exact model name/number of the tablet?