FAQ

by Matt Martin| | Accessories

Update 4200 Series Tester to Recognize Custom Adapter Signature

How to Update 4200 Series Tester to Recognize Custom Adapter Signature

Update the Adapters.sys File on a 4200 or 4250 Tester

If your 4200 or 4250 tester needs to support a custom adapter whose signature is not included in the tester’s current adapter library, you can update the tester’s Adapters.sys file using the UpdateAdaptersSysOn42xx utility. This process adds support for the required adapter signature so the tester can recognize and work with the adapter correctly.

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Update Adapters.sys on 42xx

Version 20260729  |  4.15 KB
Download

Before You Begin

  1. Download the UpdateAdaptersSysOn42xx.ZIP file to your computer.
  2. Extract the contents of the ZIP file to a folder on your computer.
  3. Connect the 4200 or 4250 tester to the computer using a USB cable.
  4. Verify that the tester is:
    • Connected to AC power
    • Powered OFF
    • Connected to the computer via USB

After extracting the ZIP file, the folder should contain:

  • UpdateAdaptersSysOn42xx.exe
  • Adapters.sys
  • readme.txt

Important: Do not rename the files or move them to different folders. The executable and SYS files must remain together in the same folder.

Install the Update

Step 1: Verify the Tester Connection

Confirm that:

  • The tester is connected to the computer with a USB cable.
  • The tester is powered OFF.
  • The tester remains plugged into its power source.

Step 2: Verify the Required Files

Ensure the following files are in the same folder:

  • UpdateAdaptersSysOn42xx.exe
  • Adapters.sys

Step 3: Run the Update Tool

  1. Open the folder containing the extracted files.
  2. Double-click UpdateAdaptersSysOn42xx.exe.
  3. If Windows displays a security prompt, allow the program to run.

Step 4: Allow the Update to Complete

During the update process, the utility will:

  • Verify that the Adapters.sys file is present.
  • Copy the updated Adapters.sys file to the connected 4200 or 4250 tester.
  • Display status messages as the update progresses.

Step 5: Finish the Update

When the update is complete, the following message will appear:

Process complete. Press Enter to exit…

Press Enter to close the application.

Troubleshooting

If the update utility reports an error:

  • Verify that UpdateAdaptersSysOn42xx.exe and Adapters.sys are located in the same folder.
  • Try running UpdateAdaptersSysOn42xx.exe as an administrator.
  • Confirm that the tester is connected via USB and remains powered OFF.

If you need additional assistance, contact Cirris Technical Support.

Phone: 801-973-4600 (select option 2 for tech support)
Email: techsupport@cirris.com
Hours: 8:00 AM to 5:00 PM MST