So I know there are quite a few people struggling with HP Sandy Bridge dv7 laptops out there and this combo update. I finally got mine to boot, fixed resolution using Intel HD3000 (still no ATI 6770, but for others with slightly different gpus you might be in luck since the latest chimera seems to support them all but mine) QE/CI works as well so you can run nice graphics at real screen resolution.
I also got ethernet working, power management (although fan doesn't seem to ever fully quit entirely during idle. I have USB 2 (I believe USB 3 hung my system, haven't tried it again), both internal disks (but they always registered) and a host of other niceties but still no wifi, audio or discrete gpu.
I should also mention, I made my own dsdt (which I can provide for dv7-6195 based mods) but still have to boot with -v busratio=20 cpus=1. Without these automatic kernel panic (also had one while fiddling around in OS so not out of the woods yet.) However, I have had it up and running for most of the night as I became acquainted with OS (this is my first Mac, although I plan on getting the missus MBA soon, and can use Lion upgrade)
I will post tutorial of what I did, and what I plan to do, but right now need to get some shut eye.
Its taken me well over a month so I hope I can assist someone else from avoiding the agony I have had to endure. Next time I will build a customac because trying to spec a laptop to match MBP isn't the best approach.
Cheers to Tony, MacMan, netkas, etc. for blazing the trail so we can all bask in the OSX glory!