Using the new 9.4.0 modbin kernel. I’ve now updated my Hackintosh to 10.5.4.

I haven’t seen anywhere else that says how to install the whole update, rather than just the kernel, so i’ll say how i did it.

1. Download the 10.5.4 update (either should be fine).
2. Using pacifist, install everything but the mach_kernel and /System/Library/Extensions/System.kext.
3. Then follow the instructions on the site above. 
4. Reboot. I found that when i rebooted, i had a kernel panic at shutdown. A simple power off, power on fixed this and i’m now running 10.5.4.