Keep in mind that installing and playing the Minecraft PS3 ISO might void your console's warranty, and there's a risk of bricking your device if something goes wrong.
Instead, here are legitimate ways to play Minecraft on PS3:
Is there something specific about Minecraft on PS3 I can help you with legally?
: RPCS3 does not boot ISO files directly. You must mount the ISO (using Windows Explorer) and copy the internal folders (like PS3_GAME ) into a new folder named after the game.
An ISO file, also known as an ISO image, is a single file that contains the entire contents of a disc, such as a game or movie. In the case of Minecraft on PS3, an ISO file would contain the game's data, including its files, folders, and structure.