- Unpack the U5 Upgrade zip file into your Ultima 5 directory on your hard drive. This will not affect your current saved games.
- Run “setm.exe” from the Ultima 5 directory to configure your sound card, if you will be playing music.
- Run “u5cfg.exe” to configure the game options.
- Run “u5data.exe” to patch DATA.OVL.
- Run “ultima5.com” from the Ultima 5 directory to start the game.