PSP coder Takka has recently updated his ISO Tool, a handy homebrew app that allows you to decrypt, convert and patch all the latest ISOs, making it compatible with your custom firmwared PSP.

Changelog:

• Version 1.95:
  • [BUG] Fixed the bug can not successfully write the file
  • [BUG] 5.50Prometheus3-v4_auto_cfw 5.03 in the Fixed peagasus_orig.prx to file
• Version 1.94:
  • [BUG] Prometheus3-v3 folder specified correct mistakes
  • [BUG] 550_gen_d2 Fixed files remain under development
  • [NEW] implement a script (see script_doc.txt)
  • [NEW] on startup "script.txt" run immediately after it ends, if any, and the installer can easily use
  • [BUG] game.txt line endings and document output from the LF CR LF corrected
  • [NEW] auto_cfw integration (readme_auto_cfw.txt must be prepared in advance are listed)
  • Switching the CFW, please refer to the readme_cfw.txt part auto_cfw
  • [NEW] slightly improve the stability of recovery sleep after
  • [BUG] 5.00/5.03 CFW on when using the Prometheus system, flash0 so fixed must be rewritten readme.txt
  • [BUG] flash0 seplugins and banned from double reading (5.50 in the same system and the MS can use 5.00M33-6)
  • [NEW] readme_auto_cfw.txt to describe the DEBUG mode
  • [NEW] Prometheus3-v4 support
  • [NEW] Prometheus3-v4 instead of the ISO prm.prx key.txt and read from MS to change
  • [NEW] prm.prm to rename prml3v3.prx/prml3v4.prx
  • [NEW] 5.50 GEN-D2 operate the plug-in recommended changes to flash0 so unstable rewriting
  • [NEW] custom soundtrack support the use of masks
  • (M33Driver on automatically at ms0: / seplugins/636/libmp3.prx used)