I got SilverSurfer for A600 and had problems. I bought it from Software Hut where it was listed as "for A1200 and A600" but said nothing that another part, not included, was needed to make it work on A600. When I emailed Software Hut they told me they didn't have this part, that I should go ask Individual Computers, the manufacturer.
I can't recall Individuals' reply when I emailed, I didn't get the part at that time, but I did happen to go to an Amiga convention where Individual was present and I was able to get the part from a vendor they (well, he, Jens) were supplying there.
Later on we carefully installed everything at a user group meeting, but when I tried to use the SilverSurfer and associated driver I just got crashes. Various troubleshooting did not help, I just never got it working.
Maybe you'll be able to on A1200 though.
