Update AMD to 10.5.5?
 

I have AMD system, running Kalyway Leopard and Updated to 10.5.4, my question is:

* How can I update to 10.5.5 and above w/o screwing up my system?

I have AMD Patcher and Mervin's AMD Utility (Don't Panic, wich I dont know how to use properly)

Can anyone help me out? I can not find anything concrete on AMD Updates.

Thanks in advance.