Prototype Xbox 360 Rom May 2026

Looking for info / preservation discussion: Prototype Xbox 360 ROMs (beta/dev builds)

I'm diving into Xbox 360 software preservation and have a specific interest in — things like early game builds, XDK samples, or even internal dashboard prototypes. prototype xbox 360 rom

Also curious if anyone has personally worked with dev kits and seen prototypes in the wild — what was the coolest unreleased build you encountered? Looking for info / preservation discussion: Prototype Xbox