More early xmas presents with XBReboot v0.05! Like freeBOOT v0.02 it will reboot into a patched 8955 kernel. However, this one can be flashed directly in your onboard NAND flash, no need for a 2-nand solution. Before flashing it on your system, you will have to dump your console specific KeyVault (kv.bin) from your dumped Xbox 360 NAND image and put it inside the hacked image with nandpro:
nandpro 7371.bin: -r16 kv.bin 1 1
nandpro xbr.bin: -w16 kv.bin 1 1
Afaik, this initial version of XBReboot will only work on Xenon (v1) motherboards, but it's probably only a matter of time before it's made for other motherboard revisions.
Again, this hack relies on the JTAG hack to boot into XeLL from where it will do the reboot to the patched 8955 with virtual fuses, so will only work with 360s that don't have the new bootloader.
The hack contains no readme/nfo so for now that's all the info we can confirm, but I assume it has the same patches as freeBOOT v0.02.