Winchester Mystery House Code Update 11/20/2025
OPTION 1: UPDATE VIA THE INTERNET
WiFi Updates are not available for Winchester Mystery House at this time. Sorry for any inconvenience.
OPTION 2: MANUAL DOWNLOAD UPDATE:
1. Download the current update file from here. — The previous releases are now linked on the update history page – just click on the version number link.
2. Unzip the update file to extract the “winchester.fun” file.
3. Place that “dune.fun” file on to a USB thumb drive (32GB, Formatted FAT32 32kb and USB 3.0 recommended) Please note, do not format the usb drive with a Mac or Chromebook.
4. Open the backbox of the game and locate the PC (it’s the little black box in the middle)
5. With the game booted up (yes really it needs to be on) and running, insert the USB thumb drive into any open USB port.
6. The game will automatically update.
7. When the update is complete, The screen will prompt you to remove the thumb drive.
8. When you remove the thumb drive, the game will restart.
Change Log for the Latest Version:
Version: 2025.10.20 ------------------- First version available for Download.
