Depending on what hard drives you are using, you may also need to update your power supplies and I/O fan modules. See the 'Notes' column in the Intel� Modular Server Systems — Tested hardware and operating system list (THOL)
I have upgraded my MFSYS25 to MFSYSv2 using the description of Thomas Krenn.
You need to replace the Midplan with a Mdiplan2
and replace the Management Modul CNN with a CNN2,
I am master of bussiness administration and I have done myself. It's very easy.