Use 360 ISO Extract to unpack the ISO into a folder containing a default.xex file.
The Xbox 360 store is now closed. Many games are delisted (e.g., Forza Horizon 1 DLC, OutRun Online Arcade ). For preservation, the ROM community views these ISOs as necessary to save gaming history. xbox 360 roms iso work
There are two permanent modifications that allow ISOs to work: Use 360 ISO Extract to unpack the ISO