Domain Functional levels and Dell patching

Hi,

We want to take our Domain functional levels from 2003 - 2012 in windows, but we want to update and patch the Poweredge M610 that the operating system sits on.

Currently these are the version on the server.

CC version 3.21

BIOS 6.0.7

Firmware IDRAC6 3.30

Lifecycle controller 1.5.1.57

Is it a question of just downloading the latest patches a fixes and loaded on to the box.

We have a standalone system and for security reason cannot connect the box to the internet.

Are there any gotcha's out their?

Thanks si