Guys please help me if you know something on how can I get back my default settings on my ZT180...

I accidentally installed a lower version of Ahome on my android2.1 unfortunately, it crashed my tablet. and what appears on screen are the words

"The application aHome (process mobi.bbase.ahome) has stopped unexpectedly. Please try again."

and this is my major problem. I cannot pull up the system settings menu on the home screen because the errors keep popping up... hope that you guys can offer a hand.

thank you in advance...