The link I posted above has the software for the Umax 610S, as well as many other Umax scanners.I have the same scanner model. I think I may have the software somewhere. Last time I needed it the UMAX web site actually had the download for it, too bad it looks like they don't anymore.
Anybody else had the glass fall out of their Umax scanner? Mine did recently. And when I went to use my backup, the glass fell out of that one too. Am now experimenting with 3M double sided adhesive tape...