Welcome aboard! Enjoy SUBSIM!
If you have a Facebook account, you can join us:
https://www.facebook.com/groups/25990473292/
About your questions:
If you want to update for SH5 1.2, Uplay will do it after installation of v1.
If you want update the game with a supermod, try The Wolves of Steel megamod - TWoS.
Regards.
Fitzcarraldo