ISO Tool v1.81 is released. ISO Tool is a handy homebrew application that lets you manage and backup your UMD's straight from your PSP. ISO Tool completes by Japanese Developer Takka.

ISO Tool v1.81 Changelog:
[BUG] If you have not already EBOOT.OLD modified EBOOT.BIN EBOOT.OLD like to skip the conversion to
[BUG] Fixed failed to write to a file that already exists

Download: ISO Tool v1.81
Source:Here