Disclaimer: Ensure you only create backups of games you legally own. This guide is for educational purposes regarding homebrew software. If you'd like, I can:
Have you used ISO Tool 131 recently? Share your experiences with PSPISO compression or Prometheus patching in the comments below. For more modding guides, subscribe to our newsletter.
is a versatile homebrew application for the PlayStation Portable (PSP) created by the developer Takka . It is primarily used to manage and manipulate ISO and CSO game files directly on the handheld console without needing a computer. What is iso_tool 1.31? iso tool 131 pspiso
The tool is primarily used for maintaining game compatibility and optimizing storage. Key functions include:
Converts between .ISO (uncompressed) and .CSO (compressed) formats to save space. Disclaimer: Ensure you only create backups of games
It can force a game to run on lower firmware versions (e.g., 5.00 M33 or 5.50 GEN) or prepare them for modern 6.60/6.61 CFWs.
: Open ISO Tool from the PSP XMB menu under Game > Memory Stick . Select : Scroll through the list and select the target game. Share your experiences with PSPISO compression or Prometheus
As described in Reddit's PSP Wiki , this allows you to create a fake updater file to trick a game into thinking it's updated.
: Decrypts EBOOT.BIN files from game images and writes them back to the ISO, which is often necessary for compatibility with various homebrew loaders.