backup:
appleacpi
applehda
ioatafamily
ioachifamily
system.kext
AppleSMbios
Audio kexts
install update
dont reboot
replace:
appleacpi
applehda
ioatafamily
ioachifamily
system.kext
AppleSMbios
Audio kexts
delete /etc/rc.cleanup
reboot