Update to OSX Lion stuck - can't boot in any way?!

[nordlead]

Tried to upgrade my (working) 10.6.8 installation (Asus P8-P67 rev. B3, NVidia 5770) to Lion using Unibeast Lion 1.5.3 USB stick (following the guide).

Installation went through without any errors, but I don't manage to reboot to complete the installation/run MultiBeast:

(1) BIOS > Unibeast USB > Lion HD => Kernel Panik (in com.apple.driver.AppleIntelCPUPowerManagement)
(2) BIOS > Unibeast USB > Unibeast USB => gets me back to the OS X installer

(3) rBoot 1.2 CD > Lion HD > hangs forever (when PCI stuff starts)

Any help how I get to a (working) system / Multibeast is highly appreciated!!

Edit: When trying (1) with various boot options I run into "USBF 7.xxx CreateRootHubDevice Bus 0 already taken"

 

[Going Bald]

PS: How do I enter multiple boot params in Chimera (separated by spaces or colons or ???)?

separate by one space

 

[nordlead]

separate by one space

Thanks, finally figured that out! However, so far no combination of -x -s -v PCIRootUID=0 -f has allowed me to boot

UPDATE: Installed MacDrive on a Win partition, replaced the existing Extra folder (from 10.6.8) with the Extra folder from the Unibeast stick and got the system to boot again. So this is (temporarily - have not rebooted yet) resolved

 

[Going Bald]

Have you thought about flashing the BIOS to get native power management?
See http://biosrepo.wordpress.com/asus/p67-2/