restore old nokia ip51

Hello,

I've found in a box an old unused Nokia IP51 with original cd and docs.
I'd like to play a little trying to reset to defaults, update firmware,
install software and using it as my personal home firewall.
I've never used Nokia firewall before, only Zyxel and Fortinet ones.
Some suggestions about how to start? Links, docs, download sites, etc.

Thanks in advance!

--
Bye!
Gianfranco Bartolini