Title : Doom 2 1.7a to 1.7 binary patch
Filename : 17dwngrd.zip
Release date : 2011-08-27
Author : Mike Swanson
Email Address : email@example.com
Description : This patch will downgrade Doom II version 1.7a to
version 1.7, which cannot be obtained otherwise
through official patches.
There is a previous downgrade patch of this
nature, d217a17.zip, which only works on Windows
2000 and higher. I found this annoying when the
game itself is for DOS, so that's all this patch
requires; DOS. It should work on real MS-DOS,
DOSBox, and 32-bit x86 Windows (other versions do
not have the NTVDM and lack DOS support entirely).
Additional Credits to : id Software,
Simon Howard for part of the below instructions,
Maurizio Giunti for MDIFF/MPATCH.
* Instructions *
Installing this patch requires having a copy of Doom II v1.7a. If you only
have version 1.9, you can get v1.7a by jumping through several hoops. If
you have setup disks for 1.666, you may skip the first two steps.
1. Install a clean copy of Doom II v1.9 from your install disc.
2. Get dm2dwngr.zip from the idgames repository (directory utils/exe_edit/)
and downgrade down to v1.666.
3. Get d2166617.zip from the idgames repository (directory historic/)
and upgrade up to v1.7a. Note that the text file for this file is
incorrectly titled; it IS a 1.666->1.7a patch, not v1.7.
4. Install this patch to get Doom II version 1.7.
To install the patch, extract this .zip into your Doom II directory and
run patch.bat from the DOS prompt. It might take several minutes to
* Copyright / Permissions *
I claim no copyright on this file. You can do anything you want with
* Where to get the file that this text file describes *
The Usual: ftp://archives.3dgamers.com/pub/idgames/ and mirrors