The most reputable tool for this is the ClonkAndre/GTAIVDowngrader available on , which provides an automated interface to handle the file replacements. Basic Workflow: How to downgrade GTA IV (UPDATED)
Users typically choose a version based on their specific needs: GTA IV Downgrader.zip
: Widely considered the best for ENB graphics mods due to its superior lighting engine. The most reputable tool for this is the
: Re-enables classic radio station tracks that were removed due to expired licensing in the 2020 update. GTA IV Downgrader.zip
: Restores the ability to use iconic mods like LCPDFR , FusionFix , and ENB series graphics enhancements that do not function on the modern version.