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: OptiPlex 5055 Ryzen CPU_1.1.17.exe
File size: 6.56 MB
To ensure the integrity of your download, please verify the checksum value.
MD5: c5d27f174050b1eec9238e85dc7e0c12
SHA1: e656c5d338fe37cef53c441712bb435f5d5b41be
SHA-256: 5c40e51017da9102d791f11e4261df2bbbb377cb0ec201c939dcd12d8c94724d
Fixes & Enhancements
Fixes:
- Fixed the issue where certain BIOS setup options gets unlocked when the admin password is set.
Enhancements:
- Enhanced the Security Mitigation feature of the System Management Mode (SMM).
- Supports the M.2 SATA solid-state drive under RAID mode.
- Upgraded the Unified Extensible Firmware Interface (UEFI) PXE version to 20.8.5 to improve the connection in limited network cards.
- Enhanced the auto detection function of PCI Express slot to save power.
Important Information
BIOS updates take no more than 5 minutes to be installed on your system. You can install the updates in the background while using the system.
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 BitLocker 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 power or interrupt the BIOS update process during the update.
Note 3: Your system requires a restart after installing the BIOS. The restart can be deferred but must be completed to ensure that the update is installed.
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.
4. Double-click the new file.
5. 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 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 BitLocker 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.
Note 3: Your system requires a restart after installing the BIOS. The restart can be deferred but must be completed to ensure that the update is installed.
Installation
1. Copy the downloaded file to a USB drive. You do not need a bootable USB drive.
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.