This tool allows users to easily revert their Grand Theft Auto IV installation (versions 1.2.0.30 and up) from Steam or Rockstar Games Launcher to earlier versions such as 1.0.8.0, 1.0.7.0, or 1.0.4.0.
Other user's assetsAll the assets in this file belong to the author, or are from free-to-use modder's resources
Upload permissionYou are not allowed to upload this file to other sites under any circumstances
Modification permissionYou are not allowed to modify my files, including creating bug fixes or improving on features under any circumstances
Conversion permissionYou are not allowed to convert this file to work on other games under any circumstances
Asset use permissionYou must get permission from me before you are allowed to use any of the assets in this file
Asset use permission in mods/files that are being soldYou are not allowed to use assets from this file in any mods/files that are being sold, for money, on Steam Workshop or other platforms
Asset use permission in mods/files that earn donation pointsYou are not allowed to earn Donation Points for your mods if they use my assets
Author notes
This author has not provided any additional notes regarding file permissions
File credits
QA Tester / Helper: @Internet Rob, @catsmackaroo, @DayL, @Not AJ and @BrynnaDaRosa Ideas: @Internet Rob and @catsmackaroo Logo: @catsmackaroo Icon: @nastyyaboi
Donation Points system
Please log in to find out whether this mod is receiving Donation Points
Added “-simple” command line argument which skips some steps making the downgrading process a bit faster. Not recommended for first-time downgraders.
Added “-skipMD5HashStep” which skips not only the “MD5FilesChecker” Step, but also the “MoveGameFiles” (Moving GTA IV to another location) Step. Not recommended for first-time downgraders.
Added a warning for when the user is living in a country or region where services like Dropbox and GitHub are potentially blocked (e.g.: Cuba, Iran, North Korea, Syria).
Added filter textbox in the “SelectComponents” (Select mods that should be installed) step.
Added ability for mods to perform a post-install action (Like automatically adjusting settings of an ini file) after they were installed.
Added ability to skip a download in the downgrade step if it might be stuck (Can lead to unforeseen issues).
Changed how the downgrader clears the read-only attribute of any files/folders within the GTA IV directory which is supposed to be downgraded.
Cleaned up source code.
Fixed a potential crash in the “MD5FilesChecker” step.
Fixed “Queue empty” crash when trying to let the downgrader downgrade your save files using GTASnP.com.
Fixed the layout and behavior of the “MoveGameFiles” step and added some more logging.
The “MD5FilesChecker” step now ignores the “876bd1d9393712ac.bin”, “PlayGTAIV.exe”, “gta4Browser.exe”, “title.rgl”, “DFA.dll” and “steam_api.dll” files within your GTA IV directory while creating the Hash.
The total mod size of the selected mods will now be shown in the “SelectComponents” step.
In the “SelectDwngrdVersion” (Select version you want to downgrade to) step, game version “1.0.8.0” is now selected by default.
More stuff will be logged now for easier troubleshooting, such as the current path of the downgrader/game, the current OS or if the app was started with admin privileges.
Updated the following steps with either new additions, fixes or changes: “Welcome”, “SelectIVExe”, “MD5FilesChecker”, “MoveGameFiles”, “SelectDwngrdVersion”, “SelectRadioDwngrd”, “SelectVladivostokType”, “SelectComponents”, “SavefileDowngrade”, “Confirm”, “Finish”
Updated the automatic “mod check” in the “SelectComponents” which checks if your selected mods miss any required dependencies or have incompabilities.
Removed the “-forceUseAltDownloadLinks” command line argument.
Donations
No donations accepted
All Requirements
.NET Framework 4.8 - Should be installed on every Windows 11/10 machine.
Windows 11, 10, 8.1, 8 or 7 - Tested on Windows 11, 10 and 7.
Internet Connection - Only if you dont plan on using the offline mode
Be in a country which isn't that crappy - Find out why in the "Notes" section.
How to use
Download the Downgrader.
Extract the downloaded zip somewhere on your PC but NOT in your GTA IV folder!
Run the IVDowngrader.exe file (Preferably as an administrator).
Now carefully follow all the steps. That's it!
Notes
The downgrader downloads stuff, such as mods and data, from GitHub and Dropbox. Some countries such as Cuba, Iran, North Korea or Syria block these services. So if that's the case for you, you will need to perform a manual downgrade instead.
The downgrader will NOT delete any of your save files.
You can savely press "Next" on the "Analysing your GTA IV directory" step if a warning occured. Make sure to read what the warning says tho.
If an error occurs while the downgrader is trying to download the required downgrading files, you can download them manually here. You can then drag the files you downloaded into the "Data -> Temp" folder of the Downgrader and you can try to redowngrade.
