Posted By: wraggster
News via pspita
A maintenance of Playstation Network has brought an unpleasant surprise for owners with PSP Custom Firmware M33. These PSP is in fact denied access to services online Sony (Network) and even with the version.txt firmware set for 5:51, or the last available, you can bypass this block.
An unexpected move by Sony, which affects a large proportion of PSP users.
We will keep you updated on developments.
UPDATE: After a test run with CF 5.50GEN-A, it seems that there are no problems in the PSN, and with no online play.