Disclaimer: This does not unlock the map if you haven't bought it, you will need to purchase the map for it to be available.

1. Open file explorer.
2. Go to Documents > Avalanche Studios > COTW > Saves.
3. In there, you will see a folder with a long string of numbers, copy this and store it somewhere safe. (you can also rename it and include the date, so you know when the backup was made)
4. Now click on the original folder, and drag the "found_icons_20" file into here, you should be prompted to replace the file, press yes/confirm.
5. You are done!