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_5260_1.6.4.exe
File size: 21.95 MB
To ensure the integrity of your download, please verify the checksum value.
MD5: 00c1172bdddc0913fe35b3e636391330
SHA1: 8cf3aaa70f7aedcf4068f58755de26de78224a03
SHA-256: 898b071a757e38f4ec50f3e78dcf997556a33f0cf330816fb18e33ba8e40aa22
Fixes & Enhancements
Fixes:
- Fixed the issue where the force PXE (Preboot Execution Environment) on next system boot feature would not function when it is selected remotely via Dell Command Configuration.
- 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).
- Firmware updates to address security advisories INTEL-SA-00191(CVE-2018-12201, CVE-2018- 12202, CVE-2018-12203).
- Fixed an issue with Secure Boot Option ROM Signature Verification.
- Fixed the issue where Windows Hello cannot enroll the fingerprint of Dell MS819 device.
- Fixed the issue where a USB device (keyboard/mouse) lags when connected to a USB hub.
Enhancements:
- Added the option Always,Except Internal HDD&PXE in UEFI Boot Path Security feature. This option is added to skip the admin password prompt while booting to internal hard disk drive or Preboot Execution Environment (PXE).
- Enhanced USB device compatibility when connected to an USB hub.
Important Information
BIOS cannot be downgraded to version 1.0.0, due to downgrade restrictions.
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 Update in the section.
6. Click Flash from file to browse the USB drive to locate the downloaded file.
7. Select the file and click Submit.
8. Verify the existing system BIOS information and the BIOS update information.
9. Click Update BIOS.
10. Review the Warning message and click Confirm Update BIOS! 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.