Dell Pro Tower Plus QBT1250/Slim Plus QBS1250/Micro Plus QBM1250/Tower QCT1250/Slim QCS1250/Micro QCM1250 System BIOS

Restart required

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.

hi testing

Driver Id : 68KGD

Importance : Critical

Version : 1.15.1, 1.15.1 Latest version Recommended version Latest and Recommended version

Release Date : 10 Jun 2026

Download Type : System BIOS

Category : BIOS

This package contains the Dell system BIOS update. BIOS is a firmware package that is embedded on a small memory chip on the system board. It controls the keyboard, monitor, disk drives, and other devices. This update addresses the Dell Security Advisories (DSA). A security advisory is a statement when a security vulnerability impacts a product, and a remedy is available for the vulnerability.

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: Dell_Pro_QBT1250_QBS1250_QBM1250_QCT1250_QCS1250_QCM1250_SEMB_1.15.1.exe

File size: 61.61 MB

To ensure the integrity of your download, please verify the checksum value.

MD5: 4bfb69066830eccf84f81b66021e4f03

SHA1: e40ec44673c7213750675c34ddb435b02961131b

SHA-256: 3204718827139f71ca335fed0fa6c560d9ce6ca484caeb65b33a182923690177

Download .EXE

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: 61.6 MB

To ensure the integrity of your download, please verify the checksum value.

MD5: 0ac0a2b3ad96d23ab3fdf657a0faee4e

SHA1: c855f302fdb45c166ea20166159babc2a5ffa1f0

SHA-256: 2bf577b38f6ca294034733c161e3d199610f381c0167d281a8907aff77938f61

Download .RCV

Fixes & Enhancements

- This release contains security updates as disclosed in the Dell Security Advisory DSA-2026-195. The DSA details are published on the Security Advisories, Notices, and Resources page, once they are publicly available. For more information about the release schedule, see Dell Client Drivers and Downloads Update Release Schedule.
- Fixed the issue where there is a noise in the Bluetooth headset during Microsoft Teams or Zoom calls.
- Fixed the issue where the system stops responding after exiting the Intel AMT option in the BIOS Setup using the esc key.

Enhancements:
- Added support for Wi-Fi 6E in Indonesia.

Important Information

- This BIOS contains the new 2023 Secure Boot Certificates.
- Do not power off the system until the process of updating the BIOS is completed.
- Once the BIOS is upgraded, you cannot downgrade the BIOS to earlier versions. BIOS downgrades are restricted when there are security updates and important fixes with earlier versions that impact the functionality of the system.
- 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.

Compatible Systems

Dell Pro Micro Plus QBM1250

Dell Pro Micro Plus XE QBM1250

Dell Pro Micro QCM1250

Dell Pro Slim Plus QBS1250

Dell Pro Slim Plus XE5 QBS1250

Dell Pro Slim QCS1250

Dell Pro Tower Plus QBT1250

Dell Pro Tower Plus XE5 QBT1250

Dell Pro Tower QCT1250

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.
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.

Applies to

Dell Pro Micro Plus QBM1250/Dell Pro Micro QCM1250

Dell Pro Slim Plus QBS1250 Dell Pro Slim QCS1250

Dell Pro Tower Plus QBT1250 Dell Pro Tower QCT1250