The problems in 3.80M33-5 is not able to support Chinese character.
PPA cannot browse the movies files witn chinese name.
Have to rename to English character, similarly, ISO game or CSO, have o rename to English.
I believe the file system issue is the serious bug in 3.80M33
3.523M33-4 looklike is the BEST for old PSP1000.
Trust me.