Due to copyright (multiMAN contains a Blu-ray driver), it is not hosted on official stores. Use trusted PS3 homebrew archives such as:
If your console freezes on a black screen when booting multiMAN, your HEN payload failed to hook properly. multiman 489 hen download fixed
Play backed-up PS1, PS2, and PSP titles directly through the retro column interface. If you want to configure your setup further, let me know: Do you need help setting up FTP transfers from your PC? Due to copyright (multiMAN contains a Blu-ray driver),