Appending Dell 3140 UEFI Firmware

Appending Dell 3140 UEFI Firmware with new Windows 11 certificate

Abstract: Learn how to append the new Dell 3140 UEFI firmware certificate in UEFI Setup for a successful Windows 11 installation.

Created: 2024-12-23 by

Introduction

In this article, we will discuss how to append the new Dell 3140 UEFI Firmware certificate to the Windows 11 UEFI database using the Microsoft CertUtil tool.

Prerequisites

  • A Dell 3140 laptop running Windows 11
  • The Dell 3140 UEFI Firmware certificate (dell3140UEFIWindows11.downloaded.crt)
  • Microsoft CertUtil tool installed

Steps to Append the Dell 3140 UEFI Firmware Certificate

  1. Open Command Prompt as Administrator

    Press Win + X and select Command Prompt (Admin) or PowerShell (Admin).

  2. Import the Certificate

    certutil -import dell3140UEFIWindows11.downloaded.crt

  3. Backup the UEFI Database

    certutil -backupstore My -f UEFIBackup.bfy

  4. Append the Certificate to the UEFI Database

    certutil -addstore ef My UEFIBackup.bfy\Dell Inc.\dell3140UEFIWindows11.downloaded

  5. Verify the Certificate

    certutil -store ef

In this article, we have discussed how to append the new Dell 3140 UEFI Firmware certificate to the Windows 11 UEFI database using the Microsoft CertUtil tool. We have covered the prerequisites, steps to append the certificate, and verified the certificate after appending.

Tags: UEFI Dell Firmware Windows 11

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