Overview
- Security researcher Markus Gaasedelen detailed the method at RE//verse 2026, with coverage referring to the exploit as “Bliss.”
- The attack compromises the boot ROM, gaining control at the earliest stage of startup before other security checks run.
- Replicating the jailbreak requires precise voltage glitching and hardware work such as soldering a microcontroller and removing capacitors.
- The technique applies only to the original 2013 “Durango” hardware and does not affect Xbox One S or Xbox One X models.
- With boot-level control, the console can run unofficial software useful for preservation and research, and no Microsoft response or fix has been reported.