211w ago - Today some HOT news in the XBox 360 scene has surfaced... ikari has released FreeBOOT v0.2 which allows users to run unsigned XEX files on their XBox 360 consoles... this essentially renders the dev boxes useless, so keep an eye on eBay for price drops soon.
From the ReadMe file: FreeBOOT is a rebooter for the Microsoft Xbox 360. This version of freeBOOT allows you to reboot into kernel 2.0.8955 on all Xenon, Zephyr, Falcon, and Jasper consoles with 16MB flashes, which are vulnerable to the JTAG hack.
Support for Opus and Jasper consoles with larger flashes will follow soon. As freeBOOT needs a second flash memory to store kernel 2.0.8955 and associated data, either a Cygnos360 or an xD card mod is required at the moment.
• Harddisk installation and save game/profile issues have been fixed
• Updated to kernel 8955
• Additional support for Zephyr and Jasper consoles with 16MB flashes
• Support for xD card mod and Cygnos360 V1 added
• Harddisk authentication disabled. The Xbox 360 will now accept any SATA...
To quote: A 'rebooter', allows to 'reboot' the 360 into an MS kernel after starting it with the JTAG Hack... in this case (freeBOOT v0.01) it should reboot the console into MS kernel 8498 (but I assume 8507 will be possible too, and it's probably also the first step into rebooting into patched/modified MS kernels).
The readme says it requires the Cygnos360 v2 chip atm, I'm assuming they need it to automatically reset the SMC back to original.
Booting your 360 into 849x+ and keeping the JTAG Hack working was impossible until now, because updating to 849x+ via the MS update procedures burned a CB-fuse which made it impossible to still perform the JTAG Hack.
If you already updated your console to 849x+ via normal update methods there is still no solution for you, but if you have a JTAG 'hackable' console (kernel 7371 or lower on NAND) freeBOOT should allow you to 're boot' it into 8498 via the JTAG Hack.