you must do a full system power off then boot ur psp in to recovery mode by holding the R trigger until u see a black screen with red writing then scroll down to u see config. then u will see alot of stuff then look for something with 3.xx kernal or something else like dat then change until u get 1.50 kernal mode
reset psp and when u turn on, hold the R trigger. u shud then come to the recovery menu. go to configuration and click on game folder homebrew until it changes to 1.5 kernel. u shud upgrade to 5.00, there is a separate game 150 folder, so u don't have to do any of this
Google the keywords "M33-1 for PSP" and you will get sites from which you can dl the update.
Switch the PSP off. Hold the right shoulder button down while switching it back on, and this will enter the recovery mode.
you cant because M33-6 gets corrupted and M33-3 gives an error code
i think the best is 3.52.m33-4
Only if you have m33 (custom firmware) for it.
Try changing your UMD ISO mode, press select to open up the VSH menu the change i from UMD to M33 driver.
MY MATE SAID IT JUST RESTARTS IT SELF AFTERWARDS, WHEN IT DOES TAKE THE BATTERY OUT AND PUT NORMAL ONE IN. IF YOU BRICK YOUR PSP I AM NOT RESPONSIBLE.YOU HAVE BEEN WARNED
You have to have 5.50 OFW to run iso's, 3.71 and 5.00 m33 don't run iso's
OE stands for Open Edition, a version of custom firmware that allowed people to run Homebrew applications on the PSP. This has now been superceded by the M33 edition, which is now at 5.00 M33-4 for the latest firmware.
at "download nova"
you need to get lost