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_5270_1.2.0.exe
File size: 31.62 MB
To ensure the integrity of your download, please verify the checksum value.
MD5: 21b398177f8fdad4f699738ddd18ea0f
SHA1: de13e7ebfd2492203c47e8b42c7538ad7d15473b
SHA-256: 7fddb31b5546f9d47ec31759c046294cc95a050d7936290255f6b051376fefcf
File Format: This file format consists of a BIOS Recovery image file. This file is used for the System BIOS Recovery process to recover a system from a corrupted BIOS.
File Name: BIOS_IMG.rcv
File size: 31.62 MB
To ensure the integrity of your download, please verify the checksum value.
MD5: 21b398177f8fdad4f699738ddd18ea0f
SHA1: de13e7ebfd2492203c47e8b42c7538ad7d15473b
SHA-256: 7fddb31b5546f9d47ec31759c046294cc95a050d7936290255f6b051376fefcf
Fixes & Enhancements
- Added BIOSConnect feature which enables connection to Dell.com without an operating system. This feature also enables downloading a recovery image from the cloud through wired or wireless connection.
- Improved Dell BIOS update utility for BitLocker suspension.
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 new file.
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 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.