Tools like allow users to "roll back" their firmware to older versions (like 3.60 or 3.65) which are more stable for hacking. To do this, the tool requires a valid PSP2UPDAT.PUP file of the target firmware version to be placed in a specific folder on the memory card. Tips for Managing Updates
| Console | File Name | Primary Use | Encryption Key Length | | :--- | :--- | :--- | :--- | | | psp2updat.pup | Full OS + Bootloader | 256-bit AES | | PS3 | PS3UPDAT.PUP | Full OS + Blu-ray keys | 128-bit AES (early) | | PS4 | PS4UPDATE.PUP | Full OS + Orbis OS patches | 256-bit AES + ECDSA | | PSP | EBOOT.PBP | Firmware + signed executables | 128-bit KIRK | psp2updatpup
Running RetroArch or backing up physical game cartridges. Tools like allow users to "roll back" their
: To manually update or downgrade using tools like Modoru , the file must be renamed exactly to PSP2UPDAT.PUP . Common File Paths : : To manually update or downgrade using tools