Has anyone successfully updated to 10.8.4 yet?

I'm currently running 10.8.2, but my attempts to update to 10.8.3 resulted in a black screen on boot. I never did fix it, so I reverted to 10.8.2. I used an iATKOS installer, BTW.

I need this latest update - I want to run Logic Pro X.

If I download and install this latest update and I end up with a black screen on boot AGAIN, what simple steps can I take to get it running? Run Multibeast, and...? I'm not sure how to go about fixing things if they go wrong.

I have a backup disk image ready to go of my current, stable installation, just in case.

Thank you.