Extender 2008 R2: Development Testing Release

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All in time.
Dec 3, 1997
New York

Extender 2008 R2: Development Testing Release

Extender 2008 R2, the second release of the Extender 2008 series, is a multi-purpose extension tool for Grand Theft Auto IV. With Extender 2008 R2, users are given additional control over their copy of Grand Theft Auto IV with easy access to various in-game options, abilities, tools, snap-ins, and more. Included with Extender 2008 R2 is the all-new Extender Security System - designed to aid in basic countermeasures for unranked multiplayer gaming in Grand Theft Auto IV.

Extender 2008 R2 is currently a work in progress and as such, releases a new build for authorized users to test its functions and stability. Extender 2008 R2 is being re-written and this time, contrary to Extender 2008, will be optimized for best performance.


Authorized users can download and test Extender 2008 R2 by clicking on the image below.

The download is authorized for use only by testing personnel and further requires a license in order to function. This software will not function without a proper license.


As this is a development testing release, the software as it stands is not guaranteed to run at optimal performance. Further, snap-ins currently present in the software may be reserved or deprecated at any time, with or without warning. The product, at any given time, is not designed to be representive of the final product.

Installation & Requirements


  • You must have a license to utilize and test this software. This is not to be taken lightly or as a joke --- the software will not work without a license. Any attempts to circumvent the licensing system will result in additional undesirable and irreversible harm being done to the system on which this software is installed on. This is
    by design
    and is
    a bug. This software could be easily abused if gotten into the hands of the wrong person. This alone is one of the very reasons the licensing system exists and advanced countermeasures are taken when users attempt to circumvent and/or tamper with the system. The very reason this software is posted on a public website without any password-protected archive or otherwise hidden link is because the licensing and anti-circumvention system has been thoroughly put through various tests without failure. Disclaimer:
    No personal identifiable information, either in whole or in part, is collected with this software in its entirety.
  • You must have the C++ ScriptHook from Aru. This is not included with the download to minimize file size; all users who have used or tested the original Extender 2008 should already have this file.
  • You must remove any previous versions of this software before attempting to install a newer version. Failure to do so may result in unexpected behavior.
  • Microsoft Windows XP Professional x64 Edition or later operating system. This software is compatible with either 32-bit or 64-bit versions of Windows starting from Windows Vista.

Some testers have reported non-functioning installations despite having all files in the correct locations. This issue has been resolved and for those experiencing these issues, we recommend you download the latest version below. Installation instructions have been updated.

After downloading the file by clicking the image above:
<ol style="list-style-type: decimal">[*]Locate the downloaded .zip file.
[*]Right-Click on the file and navigate to Properties.
[*]In the Properties window of the file under the General tab, click the Unblock button and click Apply (applies to Microsoft Windows 2000 Service Pack 4 or later).
[*]Unzip all files to a location on your computer.
[*]Place all extracted contents into the Grand Theft Auto IV root directory, so that once placed, the file listing looks like:<ol data-ipsBBCode-list="true" style="list-style-type: decimal">[*]







[*]If you wish to utilize the customizable blacklist file and this is a new installation of Extender 2008 R2:<ol style="list-style-type: decimal">[*]Rename the ESS_Blacklist.txt.bk
to ESS_Blacklist.txt
[*]If you wish to utilize the customizable blacklist file and you are upgrading Extender 2008 R2:<ol style="list-style-type: decimal">[*]Copy the contents from your existing/old ESS_Blacklist.txt into the ESS_Blacklist.txt.bk file.
[*]Delete the ESS_Blacklist.txt.
[*]Rename the ESS_Blacklist.txt.bk file to ESS_Blacklist.txt.
[*]Place the ESS_Blacklist.txt
file in the root Grand Theft Auto IV directory, e.g.: C:\Program Files (x86)\Rockstar Games\Grand Theft Auto IV\ such that the file is finally located at C:\Program Files (x86)\Rockstar Games\Grand Theft Auto IV\ESS_Blacklist.txt.
  • Toggle Vehicle Dashboard On/Off: LCtrl + I
  • Manual Siren: . (that's a period ".")
  • Toggle On/Off ELSS Lights: LCtrl + N
  • Toggle Spotlight On/Off: LCtrl + L
  • Change Vehicle Spawn Mode: LCtrl + M
  • Repair Vehicle: LCtrl + R
  • Wash Vehicle: LCtrl + W
  • Arm Yourself with Jared's Weapons: RCtrl + 5
  • Arm Yourself with Bear's Weapons: RCtrl + A
  • Toggle through Weather: RCtrl + W
  • Toggle Vehicle Color 1: RCtrl + 1
  • Toggle Vehicle Color 2: RCtrl + 2
  • Move Time Backward by 1 Hour: RCtrl + 3
  • Move Time Forward by 1 Hour: RCtrl + 4
  • Spawn Vehicle: LCtrl + 0, LCtrl + 1, ..., LCtrl 9
Extender Security System (ESS)

The Extender Security System (ESS) will automatically take care of any players known to cause trouble in multiplayer game sessions in Grand Theft Auto IV. An non-modifiable database is contacted once the system is enabled and all known problematic players are in the database. Additional players not in the database may be dealt with appropriately by utilizing the Blacklist File.

Additionally, should the user find a cheater locate a cheater during an in-game session, no need to exit and reload the game ? the blacklist file can safely be opened, edited, and saved to the user?s personal preferences. Then, the user can use the Reload Database Definitions snap-in for the newly defined definitions to take effect.
  • Enable/Disable Extender Security System: [ LCtrl + LAlt + T ] Use this snap-in to enable or disable the Extender Security System. By default, the Extender Security System is enabled once joining a network game session.

  • Reload Database Definitions:

    [ LCtrl + LAlt + R ] This snap-in will force a refresh of all blacklist definitions for the Extender Security System.

Blacklist File

Extender 2008 R2 comes with a blacklist file that will automatically "take care" of any players found in the ESS_Blacklist.txt
on-sight. The file must be in the format as follows:

File Name:




with the following rules:
<ol style="list-style-type: decimal">[*]Every player name must end with a comma ( , ) and a line return.
[*]The rule above applies to all players in the file, in addition to the last player (in the example above: etc,
[*]The file must end with the phrase >
on a line by itself, with no comma.
</ol> For best practice in add players to the Blacklist File, modify the provided ESS_Blacklist.txt
as appropriate.


For security reasons, release notes are not provided here. Only software build numbers and respective release dates are displayed here.
  • Build 1427 (January 24, 2015)
  • Build 1434 (January 27, 2015)
  • Build 1437 (January 27, 2015)
  • Build 1439 (January 27, 2015)
  • Build 1451 (January 28, 2015)
  • Build XXXX (February XX, 2015)
  • Build XXXX (February XX, 2015)
F.A.Q. (Frequently Asked Questions)

How do I know if I have a license to use this software?

If you were given a direct link to this thread by an authorized New Team of Weapons and Tactics technician or Chief Technology Officer, you will certainly have a license for it. Conversely, if you were given the link by some "friend-of-a-friend", there are no guarantees that you have a license for the software. Nonetheless, users who attempt to use the software will be notified with a message that they do not have a valid license and as a result, the software will not function.

But will my computer be at risk for using the software without a license?

As long as one does not attempt to intercept, circumvent, or otherwise bypass the licensing system, no harm will be done to your computer. To ensure security of your system if presented with an invalid license message, immediately halt use of the software.

How do I obtain a license if I do not have one?

License requests for the development test release edition are closed and therefore you may not obtain one if you do not already have one.
Issues & Bug Reports

Please post a reply directly to this thread to inquire about any found bugs or issues. Do not post a new topic - all discussion throughout these forums relating to the testing versions of the software is to stay in this thread.


  1. Note:
    All general installation paths above are provided as guidelines. Your installation paths may vary - adjust accordingly. The person downloading and installing this software on their computer hereby automatically takes full responsibility to any damage or harm done to the system due to failure to properly follow the instructions as described above.



    A quick reference to hotkeys are below; this is not a complete list. A complete list is included in the documentation (to be posted soon):

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