CPU replacement in Itanium RX5670 server!

[GODPHREY SOSTHENES]

Hi Guyz! I have done a swapping of CPUs in a 2-Way Itanium RX5670 server.I replaced the 1Ghz CPU with the 1.3Ghz CPU.I have put the required firmware updates and the required patch i.e PHKL_29425.The server is using HP-UX 11.22.The problem am having is that afterll all the installations the system fails to identify the CPU model.If you machinfo,the CPU model is unavailable.What could be the problem???