How to downgrade versions?

I started a world with a friend in october and recently started replaying the world. We just use QOL mods and Calamity and Infernum, and just today when I tried loading my mods, I got a message saying Infernum is not supported on this tmodloader version. The thing is I never did an update, and I know steam can auto update, but there's no way I jumped from version 9.3.4 to 10.3.1 in one night. Is there a simple way to downgrade without downloading a full different version off of github and manually reinstalling all my mods? (Also reinstalling the mod didn't have a newer version, so I'm assuming they never came out with one)
image.png
image.png
Was this page helpful?