ISO Tool is a homebrew app that lets users decrypt EBOOT.BIN game files, repack ISOs, patch ISOs, convert ISOs to CSO format, create XMB ISO icons, and more using only their PSP.

Changelog:

v1.978

• [NEW] (media installation) Fixed the wrong ID of 蜀編 Koihime Musou

v1.977

• [NEW] (Installation media) Koihime Musou Wei / Kure / support 
  • disc_change.prx interchange does not recognize the ISO, before Disc1 / 2 Please install on each
• [NEW] support for external font files. EBOOT font.fnt same place if there is a preference to use
  • (fnt format is the format used in RockBox. bdf files can be created)