Perhaps emailing one the authors might help?
I tried mailing the author of the PSXPort software, who said he did the PSXPort version of WipeOut 2097 for Blittersoft (sorry, don't have a name since I'm not at home and can't look at my mailbox). He said that Blittersoft had the update.
I mailed Blittersoft and they kindly ignored me, having got rid of everything remotely Amiga on their site in the same way I'd get rid of ants on my arse. This was a year ago or so, so the chances of getting the update are nil, unless someone has it on HD and is kind enough to upload it somewhere.