QUOTE(sonic2120 @ Jun 2 2011, 11:07 PM)

I'm still using LT+ 1.1 on Live with my Lite-On 74850c. I had a spare drive that was identical and had LT on it so I used that to do the update and then put my LT+ one back in. I've checked the xval a few times and no flag so far. All games work besides Fable III, Assassin's Creed: Brotherhood, Modern Warfare 2, Black Ops, Halo Reach, and Need for Speed: Hot Pursuit.
i think there's a reason why c4e et al are recommending against this.
also, note that xval/secdata is not the only place that security data is stored. so i wouldn't just put all my money on "SecData is Clean" via XVal.
gentle instruction for those coming here for a quick answer to a problem that does not yet have a clear solution: at a minimum, wait for LT+1.9 before going onto live; even more conservatively, wait for LT+1.9 instead of going back to LT+1.1.