Have the opportunity to upgrade from my D3 to the F90BT, just wondering if this is a good decision and will my Sirius box switch over?

My D3 has been starting to give me some issues, the disc drive is starting to become very loud and the navigation has frozen on me several times.

Any guidance or opinions would be appreciated.

Well I picked up a F90BT for About $350, refurbed from Pioneer.

What do I need to know to get this unit up to date?

if you got it from pioneer as a referb then it should be up to date already, but you can DL the firmware from pioneers web sight (the newest firmware 3.0 comes with maps and has to be paid for)