Run the Modoru application, which will verify the PUP file and begin the downgrade process. Critical Safety Tips Avoid "Systemdata" Files: For standard downgrades or updates, always use the Full/Retail

After install:

PSP2UPDAT.PUP is a firmware update file for the PSP, which contains the necessary data to update the console's operating system. The file is used to upgrade the PSP's firmware to the latest version, ensuring that the console runs smoothly, and new features are added. The PSP2UPDAT.PUP file is typically downloaded from the official Sony website and then transferred to the PSP using a computer.

* 3.60 : 03.600.000. * 3.65 : 03.650.000. * 3.73 : 03.730.000.