"Failed to load ROM" error. Solution: Ensure your ROM is named exactly baserom.us.z64 and is the US version (byte-swapped .z64 format). Use a tool like N64 ROM Converter if needed.
Once you have the top base VPK, you can explore mods: super mario 64 vita vpk download top
Inside VitaShell, navigate to ux0: and open your VPKs folder. Scroll down to highlight the sm64.vpk file. Press to begin the installation. "Failed to load ROM" error
Downloading ROMs or pre-compiled binaries containing game assets is legally complex. It is highly recommended to own the original Super Mario 64 ROM and compile the port yourself using the instructions in the bythos14/sm64-vita repository. Prerequisites for Installation you can explore mods: Inside VitaShell
Execute the compilation script ( extract_assets.py or the provided .bat file depending on the builder package used).