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在1月24日，GTA4第二个游戏补丁被发布，版号为Version 1.0.2.0，它提供多个图像优化选项和视觉性能选项，如提供水画质选项、阴影画质选项、倒影画质选项等等。
官方下载：Grand Theft Auto IV Patch 2 －－ Version 1.0.2.0
画面修正和增加内容：
* Graphics Menu: o Added "Water Quality", "Shadow Quality" and "Reflection Resolution" sliders in graphics menu. o Added "Definition" and "VSync" toggles in graphics menu. * Rendering optimizations. * VSync optimizations. * Nvidia 7000 series o Mirrors fixed
修正内容：
* Direct input device support is now disabled by default and can only be enabled with the commandline: "-usedirectinput" * Supported Controllers: o Logitech Dual Action o Logitech RumblePad 2 o Logitech Cordless RumblePad 2 o Saitek P2500 * Supported Wheels: * Note: Controls are unmapped, user must map controls using Manufacturer's mapping software. o Logitech G25 Racing Wheel o Logitech Wingman Formula GP Wheel o Logitech MOMO Racing o MOMO Force o Driving Force Pro o Driving Force o Formula Force * Added Commandline "-notimefix" which will help some users who are experiencing the fast/slow gameplay issue after patch 1 was applied. * Fixed a bug that caused some users to experience endless looping audio effects after Patch 1 was applied. * Benchmark was disabling sounds after Patch 1 was applied, this is now fixed.
崩溃问题修正：
* Unable to load game fixed - For some users, a DOS window would open and close immediately upon Game Launch, GTA IV would never launch. * Hang on Initial Game Loading Screen fixed - Some users experienced Character Art Loading screens in an endless loop. * Certain causes of the RESC10 error have been fixed (Alt-Tab, change resolution). If you experience an RESC10 error, you must restart. * Certain Instances of the "GRAND THEFT AUTO IV has encountered a problem and needs to close" error have been fixed.
视频编辑：
* Naming clips is now mandatory on Export
多人模式：
* Legitimate players being kicked from Multiplayer matches has been fixed.
一般问题：
* Wireless 360 controllers not functioning - Triggers were full on/off, fixed. * In the Options menu accessed from the Title Screen a “Game” section has been added with the ability to turn Clip capture on/off.