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Navigate to your GTA V main installation folder (where GTA5.exe is located). Drag and drop the three files listed above into this folder. script hook v version 1.0.350.1 download
Launch the game. If installed correctly, you should see a console window pop up in the top-left corner of the screen while the game loads. You can now press F4 to open the in-game console. Searching for specific legacy versions of Script Hook