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: Latitude_7400_2-in-1_1_5_1_32_bit.exe
File size: 20.26 MB
To ensure the integrity of your download, please verify the checksum value.
MD5: 78a78957c755e42f11f23692e5b7526e
SHA1: fb7ffc20d84751c01178a17bd4a667a296d381d1
SHA-256: 5a387ac6011f17b2dce9727513875597055d5c585f9ce7fc91828ece3cdf79ea
Fixes & Enhancements
Fixes:
- Fixed the response time of the keyboard and touchpad when the system is connected to a Dell UltraSharp U2419HC monitor.
- Fixed the issue where the system always boots to a Rufus formatted USB drive instead of the internal hard drive.
- Fixed the issue where the system cannot be accessed using the fingerprint sensor. This issue occurs when the system either resumed from sleep mode or during the boot process.
Enhancement:
- Updated the Thermal Algorithm to reduce the palm rest temperature.
- Updated the Embedded Controller Engine firmware.
- Updated Intel Management Engine Firmware.
- Updated the Realtek USB LAN firmware.
- Updated the Power Delivery firmware.
- Updated the Embedded Controller Engine firmware.
- Enhanced Lid Switch feature to control Lid function in BIOS setup.
Important Information
Once the BIOS is upgraded, you cannot downgrade BIOS EXE/Recovery (RCV) to the versions before 1.5.1 due to restrictions.
Supported Operating Systems
Installation instructions
Updating the BIOS from Windows
Note 1: Before updating the BIOS, ensure that you suspend BitLocker encryption on a BitLocker-enabled system. If it 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.
Download and Installation
1. Click Download File, to download the 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 file.
4. Click Yes to open the BIOS update utility.
5. Click Update to initiate the update process. A progress bar is displayed.
6. Click Restart to restart the system once the progress bar reaches 100%.
The update process initiates at the Dell logo and an update initiation message is displayed with a progress bar. After BIOS update finished, system will auto reboot to take effect.
Applies to
Dell Latitude 7400 2-IN-1