At the time of this post, this link is dead. I don't suppose anybody knows of some other host, archive, or means to get the firmwares?
I don't suppose the author(s) would mind being contacted?
Figured this would be the best place to start asking... sure would feel silly if it's just a temporary outage. : P
Edit: Oh, wow, on a whim I tried the Wayback Machine and it actually seem to have all the firmware contents!
I'm not used to it actually keeping functional downloads, so I didn't think of it first, sorry. : P
On the slim off-chance anybody else wants 'em...