What is the last firmware for Macmini2,1

HI There,

I just had from my office an old Mac Mini 2,1.

I am trying to get the best of it installing the latest system updates.

I was trying to find out if the actual firmware is the lastest:

To do so i followed the instructions of this link > http://support.apple.com/kb/HT1237

I can read from the  menu /About This Mac / Hardwere section /

Model Identifier > Macmini2,1

Boot ROM version > MM21.009A.B00

SMC version numbers > 1.19f2

I do not find any information about Macmini2,1 in the previous link > http://support.apple.com/kb/HT1237

My model is not even listed :/

Could somebody be so kind let me know if the firmware of this machine is up to date ?

Merci.

Cheers

Dan