Download Gta 4 1.0.4.0 Here

I should check if 1.0.4.0 is an official patch. If it's not, then the user might be referring to a mod or a community patch. Community patches for GTA IV are common, enhancing the game's stability and features. I found that the GTA IV Community Fix is a well-known mod that improves the game, and maybe version 1.0.4.0 is a specific version of that fix.