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

Before updating the BIOS, please suspend BitLocker encryption. If it is not enabled on your system, you can skip this step. Learn more

Dell Precision 7540 and 7740 System BIOS

Restart required
This package contains the Dell system BIOS update. BIOS is a firmware that is embedded on a small memory chip on the system board. It controls the keyboard, monitor, disk drives, and other devices. This update addresses the Intel Security Advisories INTEL-SA-00219, INTEL-SA-00220, INTEL-SA-00270, and INTEL-SA-00241. A security advisory is a statement when a product is impacted by a security vulnerability and a remedy is available.

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Fixes & Enhancements

Fixes:
- Fixed the issue where the Ethernet disconnects when the system is connected to a dock.
- Firmware updates to address Intel security advisories INTEL-SA-00219 (CVE-2019-0117), INTEL-SA-00220 (CVE-2019-0123), and INTEL-SA-00270 (CVE-2019-11135)
- Firmware updates to address security advisory INTEL-SA-00241 (CVE-2019-0169, CVE-2019-11105, CVE-2019-11104, CVE-2019-11103, CVE-2019-11090, CVE-2019-0165, CVE-2019-0168, CVE-2019-11087, CVE-2019-11101, CVE-2019-11106, CVE-2019-11108, CVE-2019-11147, CVE-2019-11088, CVE-2019-0131, CVE-2019-0166, CVE-2019-11100, CVE-2019-11107, CVE-2019-11086, CVE-2019-11132, and CVE-2019-11131)
- Firmware updates to address Intel security advisories INTEL-SA-00240 (CVE-2019-0151) and INTEL-SA-00164 (CVE-2019-0184)
- Firmware updates to address Intel security advisories INTEL-SA-00220 (CVE-2019-0124), INTEL-SA-00260 (CVE-2019-0154), and INTEL-SA-00254 (CVE-2019-0185)
- Fixed a BIOS Setup configuration issue that occurs after clearing the CMOS.
- Fixed an issue with preboot TPM detection and error logging.
- Removed the IpSec driver and application.

Enhancements:
- Added an enhancement to extend the BIOS password configuration measurements into the TPM.
- This update integrates the BIOSConnect feature into Dell SupportAssist OS Recovery. It connects the system to the Dell image server to download and recover the operating system.
- Updated the Embedded Controller Engine firmware.
- Modified battery algorithm to prolong lifespan and minimize risk of swelling.
- Enhanced the device protection for Windows 10 Security.
- Updated the Intel Management Engine firmware.
- Enhanced the High Dynamic Range (HDR) feature.

Version

Version 1.5.1, 1.5.1

Category

BIOS

Release date

11 Dec 2019

Last Updated

16 Dec 2019

Importance

Available formats

File Format: Windows/DOS
File Name: Precision_7X40_1.5.1.exe
Download Type: HTTP
File Size: 16.36 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:
4037ffd1cefda5790463c1b0e3ac7fb7
SHA1:
1ff73def54f0bc8f55f322421b62d3bbff3fd1f3
SHA-256:
a227455ef2a934cebcb946cb4efa366526f8fe5b6e1e8437a135297bbaeba8f4

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

Precision 7X40 system BIOS
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. The system shuts down after the update is complete.

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 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.

Installation
1. Copy the downloaded file to a USB drive. The USB drive does not need to be bootable device.
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 progress bar at the Dell logo screen. The system restarts again when the update is complete.
- Once the BIOS is upgraded, you cannot downgrade BIOS EXE/ Recovery (RCV) to the versions before 1.5.1.

- If you need to downgrade to an older BIOS version, you may follow any one of the below steps,
1. Use BIOS Flash Update in the F12 Boot menu to downgrade the BIOS.
2. Disable the SMM Security Mitigation option from BIOS setup menu before to attempt the downgrade in Windows operating system.

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