I need help running Doom 3 1.3 (not 1.3.1)

[Doommarine_maxi]

I have the original Doom 3 1.3.1 from steam and I want to play the older 1.3 (doing a copy in some folder or something like that). How can I do that?

 

I want to do this because Damnatio Memoriae.  Episode I: Escape from Prykohn (From 2005) seems to don't work properly in 1.3.1 (Game crashes in the second map while trying to reach the roof, and the README say: "Patch 1.3 recommended but not required.")

Edited February 7, 2018 by Doommarine_maxi

[snapshot]

There's a mod helper that lets you run 1.3 Mods on 1.3.1 : http://www.the-emz.com/run13on131/

Edited February 7, 2018 by dmg_64