Tools

GTA IV 'Mr. & Mrs. Bellic' Time Chart

Use this chart to start the 'Mr. & Mrs. Bellic' (wedding mission) ASAP based on the time of day when you finish 'A Dish Served Cold' (revenge mission). (external link)

By KyleKyle

GTA IV Calls & Texts Guide

This guide will help you learn everything you need to know about the phone calls and text messages in the game. (external link)

By KyleKyle

GTA IV Downgrade Guide

Use this guide to downgrade to version 1.4. (external link)

By KyleKyle

GTA IV Dying and Time Change Chart

Use this chart to learn how dying affects the time of day. (external link)

By KyleKyle

GTA IV Friend Availability Chart

Use this chart to learn the friends' availability/unavailability hours. (external link)

By KyleKyle

GTA IV Game Flow Chart

See this thread for more info: http://www.speedrun.com/gtaiv/thread/uftrz/1#fg9q4 (external link)

By PowdinetPowdinet

GTA IV Pay 'n' Spray Chart

Use this chart to learn how a pay 'n' spray affects the time of day. (external link)

By KyleKyle

GTA IV Routing Documents

http://www.speedrun.com/gtaiv/thread/exd1i (external link)

GTA IV Vehicle Top Speed Chart

This chart shows every vehicle's top speed and compares Kyle's testing to gta4.net's testing. (external link)

By KyleKyle

Saves

gtaForums' Savegame Catalog

Safe and trusted -Kyle (external link)

Splits

Any%

This split file goes with the starter guide/route. Only missions are included. Any additional information will have to be added by the user. (direct download)

By KyleKyle

Classic splits, from back in the day

(direct download)

By KyleKyle

Most Wanted splits

(direct download)

By 429

Radar Icons

(direct download)

Patches

(Guide) How to Downgrade GTA IV to Version 1.4

Follow this guide to properly downgrade your game. (external link)

By KyleKyle

1.0.4.0 Patch Installer

Contains the installer for patch 1.0.4.0 (direct download)

Archive containing 1.4 patch files

(direct download)

Archive containing RGSG

(direct download)

fonts.zip

(direct download)

gfwlivesetup.exe

(direct download)

By Microsoft

Radio Downgrader

https://gtaforums.com/topic/908658-iveflc-radio-downgrader/ (external link)

Rockstar Social Group Tool (RGSG)

(direct download)

Trainer

(direct download)

By SomeoneSomeone

xliveless

What you need to install xliveless. Read the readme file for instructions (direct download)