Excuse the necro, but both links in the OP are currently dead, so I will provide valid (as of 15th November 2020) archive.org backups below
For the full version: https://web.archive.org/web/20180106031049/http://www.mdgx.com/spx/OSR2SP1.EXE
For the lite version: https://web.archive.org/web/20190817122722/http://www.mdgx.com/spx/OSR2SP1L.EXE
Hope this helps