Yes you can. Uninstall the current version, then manually install the older version. Then you'll have to live with ignoring the update badge in control panel
Yes, the patched lib does not work on 7.2.4556. I also applied the same changes to 7.2.1-4602 (using bin diff) and I get the same.
In both cases a black screen when I start SS. When I switch to original lib it works fine.
armadaxp/DS214+