[GTA4 2025 guide] How to downgrade to 1.0.7.0 and install LCPDFR

Short description of what I've done in the video (not detailed):
Your game should work if you followed all these steps and have watched my video
 

• Make sure your copy is clean and has no mods
• get the downgrader
• disable your antivirus temporarily until you have downgraded successfully
• run the downgrader using admin privilege
  -> configure the thing accordingly;
  please do not move your GTAIV directory using the downgrader to somewhere else as it may cause issues
  (namely some content are stuck in the [IV] folder and require manual extraction and a whole lot of other fiasco to deal with; JUST DON'T)
• check if the [GTAIV.exe] file is version 1.0.7.0
  -> if it is still showing your previous version then running the downgrader again; make sure antivirus software IS disabled when the downgrader is running
• open your game by opening [LaunchGTAIV.exe] with admin privilege
  -> after loading into the game, remove ALL parked cars outside of your safehouse
  (don't miss out the ones at the OLD safe house at Hove Beach too)
• download LCPDFR (the second last option, the [1.1 Installer No Ads.exe] one)
  -> configure the thing accordingly
• run the game again by opening [LaunchGTAIV.exe] with admin privilege
  -> once everything is loaded, press [ALT] + [P] to enable LCPDFR
  -> go to the nearest police station and go on duty
  -> check if there's any LCPDFR features that are not working (there might be keybinding issues)