Custom PSP firmware 3.80 M33 has had a patch released, which you can obtain from the Dark-Alex website. 3.80 M33-2 fixes a couple of bugs that crept into the code -

This update fixes a couple of issues.

- Function scePowerGetClockFrequency/scePowerGetClockFrequencyInt was not resolved properly due to a confussion between the two nids applying to the same function. Fixed, this update is necessary for plugins and kernel homebrew reporting psp cpu speed.

- PSX EBOOT.PBP that have a icon of 80×80 pixels will not be replaced by Dracula icon in savedata.

Explanation of icon issue:
In 3.80 pops, Sony has introduced a bug that causes a crash when the icon of the pbp is not 80×80, like those of psstore. To resolve the issue, M33 was replacing the icon in ram by the one with Dracuala image, what caused the side effect of ps1 save games having Dracula icon.

Those of you who have upgraded to this latest custom firmware should apply this patch to sort out the few issues that have been found so far. You should be able to use the Network Update option within the 3.80M33 firmware to automatically get this patch.

No word as to whether there will be a cummulative release (i.e. 3.80M33 and M33-2 combined) for those who have yet to upgrade.