IV Released [Open Source] DownpatchIV - Downgrade the Steam Complete Edition to 1.0.0.0/1.1.0.0

[Fierelier]

I've tried my best to craft a downpatch tool for Complete Edition with patches that have 100% data integrity with the games' original DVD 1.0.0.0/1.1.0.0 EFIGS releases. The point of this tool is to give you a clean slate of IV that you can work off of. My patches do not provide any fixes, and as such, you will have to get the game running yourself. This will not give you a working game out of the box.

 

Compatibility

Windows: Windows XP 32bit/64bit or up
Linux: Any relatively modern distro with Wine
Linux users please run this in Wine for case-insensitive file names.

 

Prerequisites

- Visual C++ Redistributable 2010 (x86) - Linux users: Install this in your Wine prefix by using winetricks instead: winetricks -q vcrun2010

- An unmodified version of the Grand Theft Auto IV's Steam release (Currently supported: 1.2.0.43)

- A bunch of hard disk space. I'd say have about ~40GB free, if you want to have both IV and EFLC installed.

 

Tool

Download 1.2.2010

md5: 1ab2e20c3db9295734be62dda5384d1a

 

Old versions

 

Patches

IV 1.0.0.0 (1.7GB) - Mirrors:

Spoiler

Fierelier: 136.243.209.174 [No Encryption]

Torrent Magnet: magnet:?xt=urn:btih:LNW6OM2RXZPB3Y7CCLAQKS76HV42VI2S&dn=iv.7z&xl=1852369820&tr=udp%3A%2F%2Ftracker.opentrackr.org%3A1337%2Fannounce
No seeders yet, please seed by using one of the mirrors above first, thank you -- For the love of god, don't use µTorrent or BitTorrent, use qBittorrent or deluge.

md5: 254f1033838dcb7ad18af847663f86db

 

EFLC 1.1.0.0 (4.5GB) - Mirrors:

Spoiler

Fierelier: 136.243.209.174 [No Encryption]

Torrent Magnet: magnet:?xt=urn:btih:SGQNUSLITPX76QKRDOB6SH5F5EF7XLVS&dn=eflc.7z&xl=4841250353&tr=udp%3A%2F%2Ftracker.opentrackr.org%3A1337%2Fannounce

No seeders yet, please seed by using one of the mirrors above first, thank you -- For the love of god, don't use µTorrent or BitTorrent, use qBittorrent or deluge.

md5: f6d2982cfc747af1c7e5dafe4cbb1c99

 

Do not complain to me if any of the mirrors are, or become infected. Always verify the md5 yourself after downloading. If you use Windows, I recommend you download hashutils and use md5sum. If you have Windows Vista or newer, you can use certutil -hashfile file.7z MD5 to check.

 

How to apply a patch

1. Download the tool. Extract it anywhere.
2. Download a patch, or multiple. Extract the folder(s) into the tool's patches folder.

3. Run DownpatchIV.exe - If you have Python installed, you can also run DownpatchIV.py from the src folder.
4. You will be asked where Complete Edition is, which patch to apply, and where to output to. Enter the data accordingly.
5. Drink your favorite gamer beverage while you wait for it to patch.

 

How to check your game's integrity

1. Download the tool. Extract it anywhere.

2. Download a patch, or multiple. Extract the folder(s) into the tool's patches folder.

3. Run CheckIntegrity.exe - If you have Python installed, you can also run CheckIntegrity.py from the src folder.

4. You will be asked where your game is, and what patch to compare to. Enter the data accordingly.

5. Drink your favorite gamer beverage while you wait for the integrity check.

 

How to make your own patch

1. Download the tool. Extract it anywhere.

2. Run PatchMaker.exe - If you have Python installed, you can also run PatchMaker.py from the src folder.

3. You will be asked where Complete Edition is, where the game is to patch to, and the name of the patch. Enter the data accordingly.

4. Drink your favorite gamer beverage while you wait for the patch to be created.

5. Optional: Share your patch online.

 

Troubleshooting
- Patcher complains about missing files: Try verifying your game's data in steam and retry.
- Patcher outputs an error: Look closely at the error message and see if you can figure it out yourself. Otherwise, feel free to post it here.

- Game does not run or asks for a key: As mentioned above, the patches here aim for integrity and are based off of original DVD data, so SecuROM will not allow you to play.

Hot-tip: If you're trying to play EFLC and it crashes either after the intro, or after loading the game, open regedit and go to either (create keys if they don't exist):
- 64-bit OS: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Rockstar Games\EFLC

- 32-bit OS: HKEY_LOCAL_MACHINE\SOFTWARE\Rockstar Games\EFLC
Create a new String Value inside, call it InstallFolder and set it to your patched game's path. Don't use quotes.

 

Please help me host the patches!

If you have the bandwidth to spare, please host my patches - unchanged (same md5) - in your webspace and post them in this thread. I will add you to the mirror list. I would prefer raw download links, but I will also accept others. You can also seed the torrent if you already have a copy (See Patches section).

Edited October 4, 2020 by Fierelier

[Fierelier]

Changelog

Spoiler

1.2.2010:

- Added tool for checking game integrity, including two integrity lists.
- Added option to create integrity list when creating patch.
- Shortened the action names in the console output.
- Fixed an error with folder-name appending when choosing a mounted volume as output.
- Fixed a mistake which caused the compiled version of PatchMaker to get the wrong working directory.

 

1.1.2010:

- Removed remnants of attempted case-insensitive path implementation for Linux.

 

1.0.2010:

- Initial release

 

Edited October 3, 2020 by Fierelier

[Fierelier]

New release: 1.2.2010

- Added tool for checking game integrity, including two integrity lists.
- Added option to create integrity list when creating patch.
- Shortened the action names in the console output.
- Fixed an error with folder-name appending when choosing a mounted volume as output.
- Fixed a mistake which caused the compiled version of PatchMaker to get the wrong working directory.

 

I updated the patches to include integrity lists, so if you happened to host them, update them.