Step 1: Understanding PBP and ISO Formats

• PBP (PlayStation Portable Package File): This format is commonly used for PSP games. It contains an encrypted UMD (Universal Media Disc) image.
• ISO: A standard format for disc images. Converting a PBP file to ISO allows you to use PSP games on a PS2 or PC with appropriate emulation or on a PSP using custom firmware.

Select Extract ISO to generate a playable image file (usually .iso or .bin/.cue).

Multi-Track Audio: When extracting PS1 games, ensure you keep the .CUE file. Converting to ISO alone can sometimes result in lost background music if the game uses CDDA audio tracks.

PSX2PSP: This is the gold standard for both converting games to PBP and extracting them back to ISO/BIN. Use the "Extract" feature to turn an existing EBOOT.PBP back into its original component files.

Once you have a standard ISO file, you can apply translation or gameplay patches.

Important Notes

• Legal: Only convert and patch files you own the original game for.
• PSP PBP files (PSP games) cannot be directly converted back to a playable ISO – they are encrypted. This method works best for PS1 Eboots.
• If the patch expects a specific hash, verify your ISO matches the patch’s required version (often Disc 1, Rev A, etc.).

To work with the game files for patching, you first need to extract the original disc image.

Verification and Repair: The final, often overlooked, step is verifying the patched ISO’s integrity. Because the original PBP may have omitted EDC/ECC data, the extracted ISO might fail checksum tests. Advanced users may run the patched ISO through a tool like CDmage to rebuild missing sector headers or convert it to a proper .cue/.bin pair, ensuring that audio tracks and data tracks are perfectly aligned.

Emulator Compatibility: While DuckStation and RetroArch handle PBP well, some specialized tools and older emulators prefer the raw disc image.