TPM 2.0 Firmware Upgrade Guide

Prerequisite: Before beginning, back up any crucial data. You should also know how to access your BIOS settings.

Step-by-Step Instructions

  1. Download Firmware
  2. Extract Files
    • Once the download is complete, locate the authikey3353.zip file.
    • The downloaded authikey3353.zip in the Downloads folder
    • Extract the contents, specifically the 3353exe folder, to your desktop.
    • The extracted 3353exe folder on the desktop
  3. Modify BIOS Settings
    • Restart your computer and access your BIOS settings.
    • Find the Trusted Computing option and disable it.
    • BIOS Trusted Computing option set to Disabled
  4. Boot into Windows 11
    • Save the changes made in the BIOS and reboot your computer to Windows 11.
  5. Prepare for Update
    • Locate and open the 3353exe folder on your desktop.
  6. Initiate Firmware Update
    • Find the update.bat file.
    • Right-click on it and choose Run as administrator.
    • Right-click menu choosing Run as administrator on update.bat
  7. Firmware Update Process
    • A dialog box will surface.
    • Windows dialog with a More info option
    • Allow the update to run.
    • Windows Run anyway button to allow the updater
    • A pop-up window will appear, indicating the Infineon SLB9665 firmware update process.
    • Infineon SLB9665 firmware update pop-up window
    • Wait for the update to complete.
    • Firmware update completed confirmation
  8. Troubleshooting
    • If the update does not initiate successfully, verify that:
      • Trusted Computing remains disabled in the BIOS.
      • You executed update.bat with administrative rights.
  9. Reconfigure BIOS Settings
    • Reboot your computer and re-enter the BIOS settings.
    • Enable Trusted Computing.
    • Save and reboot, then access the BIOS once more to verify Security Device Support is enabled and details are visible.
    • BIOS Trusted Computing enabled with Security Device Support details visible
    • Save any changes and restart, launching into Windows 11.
  10. Verification
    • Once you are back in Windows 11, open the Settings app.
    • Click on Privacy & security.
    • Scroll down to the Device security section and click on Security processor.
    • Under TPM status, make sure that the status is Attestation Ready.
    • Windows Security processor detail showing TPM status Attestation Ready

Important Reminders

  • Always connect your computer to a dependable power source during firmware updates to avoid potential interruptions.
  • Post-upgrade, you may delete the 3353exe folder from your desktop.

Update not working?

Email us with what you see on screen and your motherboard model — we'll help you get the firmware updated.