Downgrade Kernel of 'eFused' Xbox 360 Possible if CPU Key is Known

xbox-scene.com — Some nice progress by several hackers: they found a way to downgrade a kernel even when the CPU eFuses were burned to prevent this. The bad news is that you'll need the CPU key (also 'hidden' in the eFuse data) to do so. Jun 24, 2007 View in Crawl 4