Hmm interesting, as I've looked into it further it starts to become a scattered mess of threads with various updates mentioned.
I'm surprised nobody has set up a page with all the firmware archived.
The Peg II is a great board even today, but getting in touch with any of the companies involved is impossible. Emails go not answered.
Seems to be tainted with the Amiga curse? :-/
First off, bplan DOES answer emails. Have you actually tried or just making things up? There is a thread on here from last week where a guy got his peg2 board repaired by bplan.
Secondly, the reason nobody has posted a list of firmwares is because i'm sure they dont want emails saying "you ruined my computer" because upgrading firmware can be dangerous.