Explain which of the six emulator builds to install The hacked pack ships six variants and says almost nothing about choosing between them. The two decisions are independent: how much memory the emulated Xbox gets (64 MB is a retail Xbox and is the tested one, 128 MB is devkit spec and the pack itself calls it experimental), and what the front end lets through from the 360 (Regular, guide button, or guide plus Aurora overlays). Also answers the question that prompted this: no, none of it depends on the console model. A Xenon and a Falcon behave identically, confirmed on both. What does depend on the console is whether there is an internal hard disk at all. And records that the numbered xefu files are emulator versions picked per title by the front end, not options to choose between - install all of them. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>