You can get your v1.2 up to v1.4 with the download of the "Official" update file found at Ubi
http://patches.ubi.com/silent_hunter_4/
Which would then allow you to play
FOTRS v2.0 (in German only). There are a couple of patches for FOTRS v2 that I can't find right away, but if nothing else, I'll upload what I have.
You could even do TMO v1.6x, which aanker had given me the run-down on, a couple of years ago, if we could find his post here on SubSim... maybe...
Edit: OK, found the post, but it was just a link to the download for v1.7.2, so...
https://www.subsim.com/radioroom/dow...o=file&id=5034
It was probably a PM he had sent me that he listed all of the v1.4 compatible mods for TMO... If so, it is long gone...