Updating ILOM of a T5220 - doubts

Hello,
I'm currently running:

-> version
SP firmware 3.0.2.51.b.
SP firmware build number: 42684
SP firmware date: Wed Mar  4 14:10:32 PST 2009
SP filesystem version: 0.1.22

From the web interface I get this other version info which gets me confused if compared with the above:

Hypervisor Version: Hypervisor 1.7.1 2009/01/22 06:50
OBP Version: OBP 4.30.1 2009/01/17 05:30
POST Version: POST 4.30.1.a 2009/03/04 07:53
SysFW Version: Sun System Firmware 7.2.1.b 2009/03/04 14:19
Host Status: Solaris running

I've checked Sun System Handbook for T5220  but I've actually was in doubt if I have to apply all that is not marked "obsolete" (for example, 140952-02 Sun SPARC Enterprise T5120+T5220 LSI 1068E-B2 Firmware support the Intel 32GB SSD) or just the on at the very top of the list (