If you are looking for modern PC-based tools to handle PSP ISO files (rather than running them on the PSP itself): ISO Driver · PSP-Archive/ARK-4 Wiki - GitHub
Converts .cso files back into standard .iso format to fix loading stutters or compatibility issues in certain games.
Version 1.31 was released back in the golden PSP hacking era (around 2010–2011) by developer . It’s famous for its reliability with 6.xx CFWs and compatibility with almost all PSP games. iso tool 131 pspiso
Got a PSP in 2026? Keep ISO Tool 1.31 on your memory card. Your retro gaming future self will thank you.
This is the primary reason for ISO Tool’s popularity. Games released on UMD were often encrypted to prevent copying and running on unofficial firmware. ISO Tool could: If you are looking for modern PC-based tools
First, download the latest version of ISO Tool (e.g., v1.981). The download is typically a compressed archive (e.g., a .7z or .rar file). Inside, you'll find a folder named something like iso_tool . This folder contains the application's data and the EBOOT.PBP file.
Choose the patch type. For most modern 6.60/6.61 issues, options like or Fix for 6.xx work best. The tool will analyze and patch the EBOOT/SFO files. Once completed, try launching the game again from the XMB. Common Features of the ISO Tool Menu Got a PSP in 2026
Unlike the flashy, branded homebrew of the era, ISO Tool was utilitarian. It was a wall of white text on a black background. Leo launched the EBOOT on his PSP, and the interface sprang to life. He navigated the menus with practiced ease: : UMD Drive : ISO Convert : Prometheus (to bypass the firmware checks) The Moment of Truth
: Converts standard ISO files into the compressed CSO (Compressed ISO) format to save space on your Memory Stick. Game Updates
The specific installed on your device. The exact error message or code you are encountering.
: Extracts .cso files back to standard .iso format.