I saw there's an update to version 5, but I can't seem to find the files to replace in my current install. Download 750mb each download seems a bit impractical.

Came here to ask a version of this--I just downloaded the itch app so it automatically updates (to resolve OP's problem), but have played for a couple days now. I was wondering if there's a simple way to port my save file from the straight up computer game program to the version in the itch app?