Just recently upgraded my PSP firmware to 3.80 M33-5 and the remote play worked like a charm. BUT, after shutting down the PS3 thru the internet and trying to turn it on again, it won't connect.
I did some troubleshooting and I found out that after every remote play connection I do to the PS3, I need to re-register the PSP on it so it can be accessed thru the internet.
Been trying other stuff and nothing so far to resolve my problem. Anyone else experiencing this?