The link to the changelog of 2.5.1 directs to the link for the 2.4.5 changelog.
Editing the 905620 into the wiki didn´t help, but then again this is my first wiki editing ever so what do I know.
Isn't 3.1's checksum KKAD? That's what my game shows me with all mods disabled. Maybe it was a typo in the forum thread.