Do not turn off your computer or disconnect from the power source while updating the BIOS as this could harm your computer. During the update, your computer will restart and you may briefly see a black screen.

Before updating, please read the installation instructions and important information noted below.

Dell Latitude 5420 System BIOS

Restart required AUTO INSTALLED This file was automatically installed as part of a recent update. If you are experiencing any issues, you can manually download and reinstall.
This package contains the Dell system BIOS update. BIOS is a firmware package that is embedded on a small memory chip on the system board. It controls the keyboard, monitor, disk drives, and other devices.
To view all drivers for your Latitude 5420, go to Drivers and downloads.
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Latitude_5420_1.11.2.exe | 42.9 MB
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This is a large file. Depending on your connection speed, it may take some time to download.
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File Format: CPG BIOS Executable for Windows/DOS
File Name: Latitude_5420_1.11.2.exe
File Size: 42.9 MB
Format Description
This file format consists of a BIOS executable file. The Universal (Windows/MS DOS) format can be used to install from any Windows or MS DOS environment.
To ensure the integrity of your download, please verify the checksum value.
MD5:
17c155917a699c198ad8307dba650fb2
SHA1:
4d07d2d7ae3a0dcea99c15d9fddd71f2554a027c
SHA-256:
c85b0f74b5375f23cff1b60fd532192d295faa700f7f8063de88cb3ab3093cfd

Find more updates. Use SupportAssist to find all the latest driver updates for your device.

Fixes & Enhancements

Fixes:
- Fixed the issue where the open applications on the external monitor move to the system screen after resuming from Modern Standby mode.
- Fixed the issue where there is no audio from the external monitor after closing the system lid.
- Fixed the issue where the administrator, system, and hard drive password cannot be set using Dell Command | Configure.

Enhancements:
- Supports Realtek RTL8153DD-CG Ethernet Interface Controller.
- Set the Keyboard Backlight default setting as ON in BIOS.
- Enabled Intel Gaussian and Neural Accelerator (Intel GNA) for neural noise cancellation and to improve the system performance.
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Version

1.11.2, 1.11.2

Release date

31 Aug 2021

Download Type

System BIOS

Category

BIOS

Importance

Critical
Dell Technologies highly recommends applying this important update as soon as possible. The update contains critical bug fixes and changes to improve functionality, reliability, and stability of your Dell system. It may also include security fixes and other feature enhancements.
View Important Information
File Format: External release notes
File Name: Third-party License.txt
File Size: 1.17 KB
This is a large file. Depending on your connection speed, it may take some time to download.
Format Description:
This file format contains plain text which can be viewed with a standard text editor.
To ensure the integrity of your download, please verify the checksum value.
MD5:
fcf94f322af0e9ea2c8e7653119f536e
SHA1:
38221f0be18db3b392359d21beda45372a48f723
SHA-256:
6712dba91fdc70396b373e98587ec4669e8c8b0e24e1bcda8dce94e11c96abd4

By downloading, you accept the terms of the Dell Software License Agreement.

Additional details

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- Once the BIOS is upgraded, you cannot downgrade the BIOS EXE/Recovery (RCV) to versions earlier than 1.10.0 due to restrictions. BIOS downgrades are restricted when there are security updates and important fixes with earlier versions that impact the functionality of the system.
- BIOS updates take no more than 5 minutes to be installed on your system. You can install the updates in the background while using the system
1.40.018 Sept 2024
1.39.119 Aug 2024
1.36.212 Apr 2024
1.33.019 Dec 2023
1.32.120 Nov 2023
1.30.010 Aug 2023
1.29.013 Jul 2023
1.28.120 Jun 2023
1.27.014 Apr 2023
1.26.220 Mar 2023
1.25.018 Jan 2023
1.24.020 Dec 2022
1.23.129 Nov 2022
1.22.017 Oct 2022
1.21.221 Sept 2022
1.20.009 Aug 2022
1.19.018 Jul 2022
1.18.223 Jun 2022
1.17.227 Apr 2022
1.15.128 Jan 2022
1.14.114 Dec 2021
1.13.111 Nov 2021
1.10.027 Jul 2021
1.8.022 Jun 2021
1.7.022 Jun 2021
1.6.027 May 2021
1.5.220 Apr 2021
1.4.923 Mar 2021
1.3.1220 Jan 2021
1.0.229 Dec 2020
1.1.129 Dec 2020
Latitude 5420
Updating the BIOS from Windows

Note 1: Before updating the BIOS, ensure that you suspend BitLocker encryption on a BitLocker-enabled system. If BitLocker is not enabled on your system, you can ignore this step. For information about how to disable BitLocker, see How to Enable or Disable BitLocker with TPM in Windows at support.dell.com.
Note 2: Do not turn off power or interrupt the BIOS update process during the update.
Note 3: Your system requires a restart after installing the BIOS. The restart can be deferred but must be completed to ensure that the update is installed.

Download and Installation
1. Click Download File.
2. Click Save to save the file to your hard drive.
3. Browse to the location where you downloaded the file.
4. Double-click the new file.
5. The system restarts automatically and updates the BIOS at the system startup screen. After the BIOS update is complete, system restarts again.

Updating the BIOS from BIOS Boot Menu (independent of operating system)

Note 1: Before updating the BIOS, ensure that you suspend BitLocker encryption on a BitLocker-enabled system. If BitLocker is not enabled on your system, you can ignore this step. For information about how to disable BitLocker, see How to Enable or Disable BitLocker with TPM in Windows at support.dell.com.
Note 2: Do not turn off the power or interrupt the BIOS update process during the update.
Note 3: Your system requires a restart after installing the BIOS. The restart can be deferred but must be completed to ensure that the update is installed.

Installation
1. Copy the downloaded file to a USB drive. You do not need a bootable USB drive.
2. Insert the USB drive into any USB port.
3. Power on the system.
4. At the DELL logo screen, press F12 to access the one-time boot menu.
5. Select BIOS Flash Update in the Other Options section.
6. Click the ... button to browse the USB drive to locate the downloaded file.
7. Select the file and click OK.
8. Verify the existing system BIOS information and the BIOS update information.
9. Click Begin Flash Update.
10. Review the Warning message and click Yes to proceed with the update.
The system restarts and displays a Flash Progress bar at the Dell logo screen. The system restarts again when the Flash update is complete.

Need help with BIOS issues?

Find a solution in Dell's BIOS troubleshooting and usage guide.

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