Warning, this information is only for users who can use vanila kernel.
Next macosx update, 10.5.6, will require you to do few things before installing it.
First, you need to install pc evi v9 or any other boot-132 with mackerintel’s dsdt patcher.
if you had chameleon or etc, and have file named “boot” in root of your active partition, then just replace it with v9 or other bootloader.
second, very important, you need to generate fixed dsdt and place it to root of your osx partition (of the osx you will update).
TO do it use DSDT patcher from fassl http://forum.insanelymac.com/index.php?showtopic=133683&st=0&start=0 .
if all went fine, then your 10.5.5 osx should be working still.
So now you can safely update to 10.5.6 , even no need to remove appleintelcpupowermanagement.ket durring installing, if dsdt patcher made it’s job good.
P.S. its better to remove appleintelcpu…kext after update is done, because it will heatup ur cpu
P.S.S. if you use /Extra mkext and placed dsmos/appledecrypt/etc there, then you dont need to edit any scripts after update is done and before reboot, so this update will go like on macs, if u made all preparations.
IMPORTANT UPDATE: after fixing dsdt and before installing 10.5.6, you HAVE to install either PM disabler or Appleintelcpupowermanagement.kext from 10.5.5 here
otherwise u will have freeze durring installation, because new appleintelcpu… will get loaded, and this new kext isnt compatiblw with 10.5.5.