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 OptiPlex 5055 Ryzen APU

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 for Dell OptiPlex 5055 Raven that runs the Windows operating systems. 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. This update improves power management of the system by disabling unused PCIe slots and M.2 SATA hard disk support in RAID mode.
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Fixes & Enhancements

Fixes:
- N/A

Enhancements:
- Improves power management by disabling unused external PCIe slots.
- Enhances SMM Security Mitigation function.
- Includes M.2 SATA hard disk support under RAID mode.
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Version

1.2.2, 1.2.2

Release date

23 Jan 2019

Download Type

System BIOS

Category

BIOS

Importance

Recommended
Dell Technologies recommends applying this update during your next scheduled update cycle. The update contains changes to maintain overall system health. It ensures that the system software remains current and compatible with other system modules (firmware, BIOS, drivers, and software) and may include other new features.
Available formats View Important Information
File Format: CPG BIOS Executable for Windows/DOS
File Name: OptiPlex_5055_Ryzen_APU_BIOS_1.2.2.exe
File Size: 6.65 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. 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:
c53ac660843c00e3988032abd137bdb5
SHA1:
c2515b002d37107d6d3ee9d743d64a55df92a686
SHA-256:
d5ff388d8801010fd46c958cbe3be1cc6a308911839430b936be4853b4e69c55

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

Additional details

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If there is only one memory on your system board, Dell recommends to install the memory in the white slot.
Dell OptiPlex 5055 R
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.

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

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