The most important rule for any firmware modification is . The safest way to get a PSP2UPDAT.PUP file is directly from Sony's official servers. Because the update URLs follow a predictable pattern, it is possible to find direct links to specific firmware versions that are still hosted.
—is essentially a guide for users looking to update or hack their handheld console. psp2updatpup new download
Using Content Manager Assistant / QCMA: