PMPlayer Advance (PPA) is a media player for PSP.

Changes:

– added Custom Firmware 5.50GEN-B, PSP1000 Supported
– fixed MP4 (MKV) file delete function

http://forums.qj.net/psp-development-forum/154943-released-pmplayer-advance-fw3xx-3-0-5-5-50-gen-support-20090709-a.html