Understood, okay, for now, I'll mention it for version 3.1, and I'll add the DLL in the patch, since it's from version 3.1.
There's another point. If you install it on patch 3.0 and simply add the um.dll, the game will stretch to fill the entire screen, but all the control objects (menus, text, etc.) will remain as if on a 4:3 screen. Therefore, you need to add other files to EWA so that it stretches correctly.