The list of working CB seems wrong ... afaik as I know it should be
1888, 1902, 1903, 1920, 1921: exploitable xenon
4558: exploitable Zephyr
5761, 5766, 5770: exploitable falcon
6712, 6723: exploitable jasper
I didn't edit the page myself as I could like confirmation. Maybe you just tried to put the last exploitable CB, but for Jasper u wrote them all down, so I think you should do the same of other Xbox revisions.