Copy all extracted .scs files plus your generated promods-def-v250.scs file.
Watch these tutorials for visual walkthroughs and specialized map combinations for ProMods 2.50: How to download & install pro mods 2.50 / for 1.38 ets 2 YouTube · Massey-Lee ETS2 1.38 - Promods 2.50 Eurasia Map Combo Update 3 YouTube · Wombat Trucker PROMODS V2.50 1.38
If using the standard method, download all required parts into one folder. : Copy all extracted
Choose the (free, multiple parts) or the Fast Download (paid, single file). PROMODS V2.50 1.38
Navigate to the and select "Click here to generate your def file".