After updating my PSP from firmware OFW 6.20 to CFW 6.20 PRO-B9, all of a sudden my internet stopped working on my psp.

It says I can access to an access point but then says a connection error has occured. I tried restarting my router and making sure my W-LAN was on. So I configured all my settings but still nothing.

I have a PSP-3001 03g model. Does anybody know whats wrong?