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Upgrade Instructions for EyeLink 3 Host software 7.50
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Upgrade Instructions for EyeLink 3 Host software 7.50
Last Updated: May 06, 2026

The latest EyeLink 3 Host PC Software runs on an upgraded real-time operating system. Updating to the latest Host Software is always recommended, as it ensures you benefit from the latest features, stability enhancements, and other improvements.



Step 1: Back Up Your Files

IMPORTANT: This one-time update process will reimage your Host PC's hard disk, which will erase all existing data. Before proceeding, you must back up the following critical files:
  • EDF Files: Copy any data files you wish to keep.
  • final.ini: Copy this file if it contains custom parameter settings for your system.
  • physical.ini: Copy this file as it contains physical configuration settings.
You can perform these steps via the File Manager (either directly on the Host PC, or by opening a browser on your Display PC and navigating to 100.1.1.1 while the File Manager is running on the Host PC).

Alternatively, you can download and run our automated utility on your Display PC:

Step 2: Reimaging the EyeLink Host PC

For a complete walkthrough, please watch our video tutorial:
  • EyeLink 3 Upgrade Video Walkthrough
Please click the link corresponding to your Host PC's make and model and follow all the provided steps.
Note: If you experience issues with the image link in any of the PDF files above, please find the latest quick restore image here. However, keep in mind that this image will not function properly without all the BIOS settings outlined in the PDFs above.



Step 3: Restore Files and Finalize Configuration

After the reimaging process is complete, the Host PC will restart. Once the Host Software has loaded, press CTRL+ALT+Q or click Exit EyeLink to return to the File Manager interface. From the File Manager, you must copy the files you backed up previously to the /ELCL/EXE/ folder on your Host PC to restore your previous settings.

To verify these settings, click the Configurations icon (the gear icon in the top-left corner of the screen), go to the Screen Settings Wizard (the 4th icon from the left), and make sure that the listed measurements are correct for your display and testing environment.

If everything looks correct, you can click the EyeLink logo in the top-left corner to start the Host Software.



If you encounter issues with the upgrade or need to revert to a previous version of the Host PC software after installing the update, please contact support@sr-research.com for instructions.