Official LEGO® MindStorms Robotics Invention System Releases

Official releases from LEGO are gathered here.

Official LEGO® Firmware and ROM Releases for the RCX:

• Firmware for the LEGO MindStorms RCX
  • Firmware 0309: Original firmware version that shipped with RIS 1.0 and 1.5
  • Firmware 0328: Updated firmware version that shipped with RIS 2.0 and was included with SDK 2.5
  • Firmware 0332: Last official firmware release (included with LEGO Education Robotics sets)
    • LEGO MindStorms RCX 2.0 Firmware Byte Codes Reference
• Hardware ROM Images for the LEGO MindStorms RCX
  • RCX 1.0 ROM

Official LEGO® Software Releases and Guides for the RCX:

• LEGO MindStorms Robotics Invention System 2.0 for Windows (ISO CD image)
  • RIS 2.0 Patch for Windows XP and later
  • Latest versions of third-party installation prerequisites and optional software are available here.
• LEGO MindStorms SDK 2.0 for Windows
• LEGO MindStorms SDK 2.5 for Windows
• LEGO USB Tower Driver 1.0.50.164 for 32-bit Windows
  • LEGO USB Tower Interface Reference
  • Supersedes the driver versions included with RIS 2.0 and SDK 2.5
  • Resolves an issue occurring with Hyper-Threading or multicore CPUs
  • Does not work on 64-bit Windows (no 64-bit Windows drivers are known to exist)

Official LEGO® Master Builder Guides for RCX Projects

• RCX Constructopedia via LEGO Engineering
  • NOTE: The version of this file that now downloads from LegoEngineering.com RCX Constructopedia page is corrupt and will not open.
• Grabber Arm (as depicted on the front of the RIS 1.5 box)
• Aerial Tram

LEGO USB Tower Driver Update Instructions

By installing these drivers you signify that you have read and accept the conditions outlined in the included LICENSE AGREEMENT (LICENSE.TXT).

For 32-bit Windows XP and Windows 98/ME

1. Unzip LEGO USB Tower Driver 1.0.50.164 for 32-bit Windows onto a directory on your hard drive
2. Unplug the Tower from the PC.
3. Open up the file and click on "Setup"
4. After the tower drivers are updated, plug in the tower.
5. Your system should now not freeze when the tower is plugged in.

For 32-bit Windows 2000

1. Unzip LEGO USB Tower Driver 1.0.50.164 for 32-bit Windows onto a directory on your hard drive
2. Ensure the tower is plugged in your computer
3. Right-click the "My Computer" icon and select "Properties" in the context menu
4. In the My Computer properties window, select the "Hardware" tab
5. Click on "Device Manager"
6. Click on "LEGO Devices" and then double-click "LEGO USB Tower"
7. Select "Driver" tab
8. Select "Update driver"
9. Click "Next"
10. Select "Display a list of known drivers for this device so that I can choose a specific driver"
11. Click "Next"
12. Click "Have Disk..."
13. Navigate to the directory where you unzipped the driver files and click OK
14. Click "Next"
15. Click on "Next" again to install the updated driver