whatis this ta-079 and ta-089 for psp?

Question

how should i know if what kind of motherboard is my psp

Answer 1

Are you talking about ta-82 motherboard?

You cannot downgrade your PSP with TA-82 motherboard (however, I think they find ways to downgrade TA-82 already).

To tell which motherboard you have, try the following link:

http://img123.imageshack.us/my.php?image=ta82spot10ar.jpg