ISO Tool v1.90 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 v1.90 Changelog:
[BUG] 5.03GEN-C patch in the Prometheus, flash0 change the system rather than rewriting the plug-in
[NEW] menu command to remove rarely used
[NEW] plugins folder to add and prx, game.txt to add plug-in name / automate the process of disabling
[NEW] flash0 file is the same when writing to the rewriting does not like change
[NEW] Prometheus EBOOT.BIN patch modified to convert to upper case when you copy

Download: ISO Tool v1.90
Source: Here