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 5260 AIO 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 Dell system BIOS update and is supported on Dell OptiPlex 5260 AIO that runs 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 package fixes a potential system issue where the system stops responding when an incorrectly formatted password is entered at the BIOS Security Manager (BIOS pre-boot password) prompt. The package also contains update for INTEL ME Firmware to address security advisories INTEL-SA-00142 (CVE-2018-3659), INTEL-SA-00125 (CVE-2018-3655), INTEL-SA-00141 (CVE-2018-3657, CVE-2018-3658 and CVE-2018-3616) and INTEL-SA-00131 (CVE-2018-3643 and CVE-2018-3644).
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Fixes & Enhancements
Fixes:
- Fixed the issue where system fails to boot when HDD protection application is installed, and HDD protection is enabled in BIOS.
Note: This fix is applicable only if you have ordered HDD protection along with your system.
- Fixed the TPM configuration on a TPM startup error while resuming from S3 sleep mode.
- Fixed a potential issue with binary image measurement using the Linux UEFI shim bootloader.
- Fixed a potential system issue where the system stops responding when an incorrectly formatted password is entered at the BIOS Security Manager (BIOS pre-boot password) prompt.
- Fixed the issue where system may reboot continuously after restoring custom setting on an Intel Platform Trust Technology supported system.
- Fixed the issue where BIOS setup program may not display the text clearly under Legacy boot mode.
- Fixed the issue where video BIOS version shows empty under BIOS setup program.
- Fixed a potential issue where CPU/system fan may detect falsely under Dell diagnostic utility (ePSA).
- Fixed the issue when USB 3.0 device may not be disabled accurately for rear USB ports.
- Fixed the issue when BIOS default setting may not be correctly changed via BIOS update.
- Fixed the issue when the BIOS setup menu displays an unnecessary warning message when HDD password is set.
- Fixed the issue where the system may misbehave occasionally when Bluetooth is disabled via BIOS Setup.
- Updated INTEL ME Firmware to address security advisories INTEL-SA-00142 (CVE-2018-3659), INTEL-SA-00125 (CVE-2018-3655), INTEL-SA-00141 (CVE-2018-3657 CVE-2018-3658 CVE-2018-3616) & INTEL-SA-00131 (CVE-2018-3643 CVE-2018-3644).
Enhancements:
- Not applicable.
Read More- Fixed the issue where system fails to boot when HDD protection application is installed, and HDD protection is enabled in BIOS.
Note: This fix is applicable only if you have ordered HDD protection along with your system.
- Fixed the TPM configuration on a TPM startup error while resuming from S3 sleep mode.
- Fixed a potential issue with binary image measurement using the Linux UEFI shim bootloader.
- Fixed a potential system issue where the system stops responding when an incorrectly formatted password is entered at the BIOS Security Manager (BIOS pre-boot password) prompt.
- Fixed the issue where system may reboot continuously after restoring custom setting on an Intel Platform Trust Technology supported system.
- Fixed the issue where BIOS setup program may not display the text clearly under Legacy boot mode.
- Fixed the issue where video BIOS version shows empty under BIOS setup program.
- Fixed a potential issue where CPU/system fan may detect falsely under Dell diagnostic utility (ePSA).
- Fixed the issue when USB 3.0 device may not be disabled accurately for rear USB ports.
- Fixed the issue when BIOS default setting may not be correctly changed via BIOS update.
- Fixed the issue when the BIOS setup menu displays an unnecessary warning message when HDD password is set.
- Fixed the issue where the system may misbehave occasionally when Bluetooth is disabled via BIOS Setup.
- Updated INTEL ME Firmware to address security advisories INTEL-SA-00142 (CVE-2018-3659), INTEL-SA-00125 (CVE-2018-3655), INTEL-SA-00141 (CVE-2018-3657 CVE-2018-3658 CVE-2018-3616) & INTEL-SA-00131 (CVE-2018-3643 CVE-2018-3644).
Enhancements:
- Not applicable.
Version
1.4.6, 1.4.6
Release date
26 Oct 2018
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 View Important Information
File Format: CPG BIOS Executable for Windows/DOS
File Name: OptiPlex_5260_1.4.6.exe
File Size: 20.62 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:
ee449fc6e17c50267f124d17cfd36318
SHA1:
57f0bb93d5c8ad4a9514299557c5ef5ab1af3e5f
SHA-256:
af836573199bd66a311b8be72f99527f201752ecc8592df0b8dd9da1f3977621
By downloading, you accept the terms of the Dell Software License Agreement.
Important Information
Downgrading BIOS to 1.0.0 will not be allowed due to BIOS dependency.
Applies to
Dell OptiPlex 5260 AIO
Installation instructions
Updating the BIOS through Windows
1. Click Download File to download the file.
2. When the File Download window is displayed, 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 automatically restarts and updates BIOS during the system startup screen. After BIOS update is complete, the system reboots again.
Updating the BIOS from the BIOS Boot Menu (independent of operating system), if BIOS supports
Ensure that you suspend BitLocker encryption before updating BIOS on a BitLocker enabled system. If you do not enable BitLocker on your system, you can ignore it.
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. Confirm the Existing System BIOS Information and the BIOS Update Information are as expected.
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 on the Dell logo screen as the BIOS update is being performed. The system restarts again when the Flash update is complete.
1. Click Download File to download the file.
2. When the File Download window is displayed, 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 automatically restarts and updates BIOS during the system startup screen. After BIOS update is complete, the system reboots again.
Updating the BIOS from the BIOS Boot Menu (independent of operating system), if BIOS supports
Ensure that you suspend BitLocker encryption before updating BIOS on a BitLocker enabled system. If you do not enable BitLocker on your system, you can ignore it.
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. Confirm the Existing System BIOS Information and the BIOS Update Information are as expected.
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 on the Dell logo screen as the BIOS update is being performed. The system restarts again when the Flash update is complete.
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.