Thanks C4eva!
I assume we can only use this though for backups if the 360 has not been on live since 11-16. I have an old samsung ms28 that is in the preview program and played and xgd3 title fine for a while after the 16th, but then when I fired it up on the 23rd I got the unrecognized disc error as eveyone else has. So I assume MS must be doing some new CIV checks or something else that doesn't fully rely on AP2.5 data to stop all AP2.5/xgd3 backups from running on any 360.
In any case this firmware is probably the hardest to test & code given the large number of drive revisions and the fact that you can't buy fat 360's anymore. SO, with that said, many props to C4 and his team for pushing this firmware out despite the fact that LT+ v3.0 is already in the works.
I appreciate all your free, hard work and wait patiently for LT+3 to be perfected. Take as much time as you need. Better to get it right the first time!