I have advanced from 3.03oec to 3.40oea due to the reason of one game "Portable DJ max 2" the game is 1.55gigs CSO" and im having problems with the game, sometimes the games hangs very long and sometimes it goes all glitchy on me, missing images flashing, or freeze. i dont really know if the its because the size of the game or the firmware, the game only need 3.11 to run, iv changed the speed setting and other, doesnt change the fact that it lags horrible, but my conclusion is that the fw is buggy, and ideas?

Because of the compression CSO files can be glitchy like that, slowere mem sticks can also do it. Some here have found that getting the file from a different source can fix it.

thanx i thought so, was kinda expecting another answer, my sandisk is good enough.
the only problem is getting the iso files.

You can use a converter to get ISO files

Use PSP Iso compressor to convert the CSO to ISO and it should work like a charm.

i was going to consider that but would that really fix the problem? because when its compressed you lose certain files if im right, when you decompress it it wouldnt really make a difference?

You don't really lose any files during compression. It just makes everything smaller. The processing of the compressed iso is usually what causes the problem of slow gameplay or crashing. Try uncompressing it and play the iso and see if there is some improvement.