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 Precision 5520 system BIOS
Restart required 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 BIOS update for Dell Precision 5520 system that runs the Windows operating system. BIOS is a firmware that is embedded on a small memory chip on the computer's system board. It controls the keyboard, monitor, disk drives and other devices. The update addresses Intel advisories INTEL-SA-00185 and INTEL-SA-00191. The security advisory is an official statement when a product is impacted by a security vulnerability and a remedy is available.
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Fixes & Enhancements
Fixes:
- Firmware updates to address security advisory INTEL-SA-00185 (CVE-2018-12188, CVE-2018-12190, CVE-2018-12191, CVE-2018-12192, CVE-2018-12199, CVE-2018-12198, CVE-2018-12200, CVE-2018-12187, CVE-2018-12196, CVE-2018-12185).
- Fixed an issue with Secure Boot Option ROM Signature Verification.
- Firmware updates to address security advisories INTEL-SA-00191 (CVE-2018-12201, CVE-2018- 12202, CVE-2018-12203).
- Supports Japanese keyboard character at the Preboot Authentication environment for Dell Data Protection | Encryption.
- Fixed the issue where the keyboard backlight does not turn on when the power button is pressed.
- Fixed the issue where there is no output in HDMI port when legacy mode ROM is enabled in BIOS setting.
Enhancements:
- Supports Dell Dock Station WD19.
Read More- Firmware updates to address security advisory INTEL-SA-00185 (CVE-2018-12188, CVE-2018-12190, CVE-2018-12191, CVE-2018-12192, CVE-2018-12199, CVE-2018-12198, CVE-2018-12200, CVE-2018-12187, CVE-2018-12196, CVE-2018-12185).
- Fixed an issue with Secure Boot Option ROM Signature Verification.
- Firmware updates to address security advisories INTEL-SA-00191 (CVE-2018-12201, CVE-2018- 12202, CVE-2018-12203).
- Supports Japanese keyboard character at the Preboot Authentication environment for Dell Data Protection | Encryption.
- Fixed the issue where the keyboard backlight does not turn on when the power button is pressed.
- Fixed the issue where there is no output in HDMI port when legacy mode ROM is enabled in BIOS setting.
Enhancements:
- Supports Dell Dock Station WD19.
Version
1.14.3, 1.14.3
Release date
28 May 2019
Download Type
System BIOS
Category
BIOS
Importance
CriticalDell 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.
Available formats
File Format: Flash BIOS executable
File Name: Precision_5520_1.14.3.exe
File Size: 9.75 MB
This is a large file. Depending on your connection speed, it may take some time to download.
Format Description:
This file format consists of a BIOS-executable file. To use it, download the file and copy it to a DOS-bootable USB flash drive, then boot the system to the USB flash drive and run the program.
To ensure the integrity of your download, please verify the checksum value.
MD5:
9b3111e0076b26a0e9eb50aa0935c984
SHA1:
81f344dd4ce3bd153edaf3ef81c9d1452a1bf242
SHA-256:
2be54dd79faac653d418eb878b315812556f9cd7d27d695fdfa190d48f5e8d29
By downloading, you accept the terms of the Dell Software License Agreement.
Applies to
Precision 5520 System BIOS
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, 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.
Run the BIOS update utility from DOS environment (Non-Windows users)
Installation
Note: You must provide a bootable USB key. 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:\ Precision_5520_X.Y.Z.exe
Where C is the drive letter of the USB device where the executable file is located and Precision_5520_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.
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, 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.
Run the BIOS update utility from DOS environment (Non-Windows users)
Installation
Note: You must provide a bootable USB key. 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:\ Precision_5520_X.Y.Z.exe
Where C is the drive letter of the USB device where the executable file is located and Precision_5520_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.
Need help with BIOS issues?
Find a solution in Dell's BIOS troubleshooting guideDrivers help and tutorials
For more downloads go to the Drivers and downloads. For help on using the information on this page, please visit Driver Help and Tutorials.