Xbla Unlocker: [portable]

Either a JTAG or RGH (Reset Glitch Hack) system.

A: Sometimes, games are re-released or made available in additional regions. Checking for updates or official announcements from game developers can be helpful. xbla unlocker

With the official Xbox 360 Store closure, XBLA Unlockers have taken on a new role in game preservation. Many digital-only titles are no longer available for purchase. Either a JTAG or RGH (Reset Glitch Hack) system

While many "XBLA Unlocker" scripts exist for PC, the most famous tool for doing this directly on the console is XM360, which scans your hard drive and unlocks all titles in bulk. Preservation and the Xenia Emulator xbla unlocker

Here's a general outline: