Since there is no official UMD or digital PSP release, no amount of custom firmware will make a non-existent file run. Final Verdict
For those interested in revisiting Rayman Origins through its PSP ISO, there are several avenues to explore: rayman origins psp iso
While the game runs well on default settings, for the best experience: Since there is no official UMD or digital
launched in late 2011, the PSP was nearing the end of its lifecycle. While earlier entries like Rayman Revolution or PS1 Classics) and Rayman Legends (also for Vita) exist, specifically skipped the PSP hardware. darkzero.co.uk Why "PSP ISOs" for Rayman Origins Appear Online darkzero
: PPSSPP is an emulator for PSP games , not PS Vita games. You cannot play the PS Vita version of Rayman Origins on PPSSPP. However, if you are using PPSSPP to play other PSP games, the process is straightforward: