Can I play backup games in the form of .ISO (file extensions for psp games) from my microsd card using a similer hack to the R2 DSI card?
You know those olds hacks like moonshell for the Nintendo ds?

Yes those ones withiout additional modchips.

I don't want to use CFW instead I want to be able to hack myself and then launch the game from the root of my sd caerd without paying $100 for a game from play station store. How to do that