Restore your backup from Step 3. Never update a game while a save state is active. Always load the game, then reset to the title screen before updating.
: Simply copy the save folder to an external drive or cloud storage. box hako save gamel upd
There are other save backup tools like GameSave Manager, Ludusavi, and even Steam Cloud. However, Box Hako distinguishes itself with the proprietary engine. Here’s a comparison: Restore your backup from Step 3