Download Files
File Format: 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.
File Name: E7450A21.exe
File size: 8.61 MB
To ensure the integrity of your download, please verify the checksum value.
MD5: 8a0bf2ae251f2de794c6ff9dbb336920
SHA1: 894c0c33a2aa2d6abaa110f73df38a66f63ab670
SHA-256: d2949c48ff458f2389f1b2a144d294f3101b9c0c7c4793ca9faef3db43583057
File Format: This file format contains plain text which can be viewed with a standard text editor.
File Name: E7450A21.txt
File size: 12.76 KB
To ensure the integrity of your download, please verify the checksum value.
MD5: d1fe9ec817dfa7a854d84c9961de83ca
SHA1: 7653dff4c73b660fe3f16e352e1c61dae4e80f02
SHA-256: 23e98a5f1f3863c42f1e019ea1c5dd0dd476570b34df63a23484374047dd3e00
Fixes & Enhancements
Fixes:
- Fixed an issue with Secure Boot Option ROM Signature Verification.
Enhancements:
- Not Applicable
Important Information
- It is recommended that you do not downgrade the BIOS to version A02 or prior due to downgrade restrictions.
- This update can only be installed on systems that contains an e-dock socket.
Supported Operating Systems
Installation instructions
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.
Note 2: Do not turn off the power or interrupt the BIOS update process during the update.
Run the BIOS update utility from Windows environment.
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 and double-click the new file.
The system restarts automatically and updates the BIOS at the system startup screen. After the BIOS update is complete, system restarts again.
Run the BIOS update utility from DOS environment (Non-Windows users)
Installation
Note: You must provide a bootable USB drive. This executable file does not create the DOS system files.
1. Copy the downloaded file to a bootable USB drive.
2. Power on the system and then Press the F12 key.
3. Select USB Storage Device and boot to the DOS prompt.
4. Run the file by typing following command. For example:
C:\ Latitude_E7450_X.Y.Z.exe
Where C is the drive letter of the USB device where the executable file is located and Latitude_E7450_X.Y.Z.exe is the name of the downloaded file.
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 a DOS environment with UEFI boot mode (Non-Windows users, Load Legacy Option Disabled)
1. Copy the downloaded file to a bootable DOS USB drive.
2. Power on the system and then go to BIOS Setup by pressing the F2 key.
3. Go to General > Boot Sequence > Boot > Boot List Option.
4. Change UEFI to Legacy of Boot List Option.
5. Go to Exit > Save Changes and reboot system.
6. Press F12 and then select USB Storage Device and boot to the DOS prompt.
7. Run the file by typing the file name.
The system restarts automatically and updates the BIOS at the system startup screen. After the BIOS update is complete, the system restarts again.
8. Go to BIOS Setup by pressing the F2 key and go to General > Boot Sequence > Boot > Boot List Option.
9. Change Legacy to UEFI Boot Option.
10. Go to Exit > Save Changes and reboot the system.