Driver Details

Warning: Do not turn off your computer or disconnect from your power source while updating the BIOS or you may harm your computer. During the update, your computer will restart and you will briefly see a black screen.

Dell Precision T1650 System BIOS

This package provides the BIOS update for Dell Precision T1650 and is supported on Precision T1650 model running the following Operating Systems: Windows and DOS.

Fixes & Enhancements

- Update to the latest CPU microcode to address CVE-2017-5715 and associated Intel Reboot issue.

- Not Applicable.


Version A27, A27



Release date

15 Mar 2018

Last Updated

15 Mar 2018


Available formats

File Format:Windows/DOS
File Name:T1650A27.exe
Download Type:HTTP
File Size: 8 MB
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.

By downloading, you accept the terms of the Dell Software License Agreement.

Applies to
Dell Precision T1650
Installation instructions
BIOS Update Executable for Windows/OS independent

1. Click Download File to download the file.
2. When the File Download window appears, click Save to save the file to your hard drive.

Run the BIOS update utility from Windows environment
1. Browse to the location where you downloaded the file and double-click the new file.
2. Windows System will auto restart and update BIOS while system startup screen.
3. After BIOS update finished, system will auto reboot to take effect.

Perform the BIOS update from the BIOS Boot Menu, independent of operating system.
1. Copy the downloaded file to a USB flash device. It does not need to be bootable.
2. Insert the USB flash device 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 on the "..." button to browse the USB flash device 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.Reviewing the Warning message and click "Yes" to proceed with the update.
11.The system should restart and show a Flash Progress bar on the Dell logo screen as the BIOS update is being performed.
12.The system will restart once again when the Flash update is complete.

Note 1: Please make sure you suspend BitLocker encryption before updating BIOS on a BitLocker enabled system.
If you don't enable BitLocker on your system you can ignore it
Important Information
Upgrading and Downgrading between Pre-Win8 BIOS Images and Win8 Feature Enhanced BIOS Images.

The new Win8 Released BIOS contains new features and behavior, but the upgrade process for the end user is still unchanged. Simply run the EXE application normally and the BIOS will handle incorporating the new features and logic with your current settings. After the upgrade, you will immediately see that one of the visible changes is to the logo screen during boot, which only displays the logo at a larger size with no other information or text.

Once a machine has a Win8 Released BIOS running on it, downgrading to a Pre-Win8 Released BIOS requires removing some unique functionality and security enhancements that are only present in a Win8 Released BIOS. This downgrade process described here is specific to Win8 Released BIOS to Pre-Win8 Released BIOS transitions ONLY, and does not affect the normal rules/operations for downgrades of Pre-Win8 Released BIOS to an older Pre-Win8 Released BIOS, or Win8 Released BIOS to an older Win8 Released BIOS.
To install a Pre-Win8 Released BIOS on a machine running a Win8 Released BIOS, you will still use the same EXE application released for the BIOS version you wish to go to. When in Windows or DOS, your interaction with the application will be the same, but upon the machine restarting in order to do the update you will be prompted to accept the actions required in order to downgrade the machine and then prompted enter your admin password (if set). These prompts can not be accepted remotely and must be accepted by using an attached or built-in keyboard.
Due to compatibility of features, and ensuring platform stability, the only way to downgrade is to reset all the settings in the machine to a default factory state as if it had been shipped with a Pre-Win8 Released BIOS; specifically including defaulting the boot mode to Legacy (not UEFI), removing all passwords, and defaulting all user selectable settings. The following is retained on the machine (all other settings are reset): Windows Keys (if present), Service Tag, Asset Tag, Ownership Tag, Manufacturing Date, Ownership Date, and Express Service Code.
Downgrading is blocked if either Secure Boot is on or if Computrace has been activated. Due to security rules and protecting our machines from malicious attacks, if a user wishes to downgrade he/she must first ensure both of these are disabled or off. (Machines that are shipped out of the factory with Win8 Operating System are required to have Secure Boot initially on.)
After running the application, accepting the downgrading conditions prompts after restart, and the BIOS downgrading process is finished, the platform will be operating with the Pre-Win8 Released BIOS you desired. You may then go to the Firmware Setup to change settings and configure the machine as needed.

Quickly Identifying if You Have a Win8 Released BIOS Installed:
To quickly tell if a machine has a Win8 Released BIOS on it, check if the boot screen does not display the model name and BIOS version under the logo. This information, model name and BIOS version, are now found in the F12 menu on a Win8 BIOS
Warning: Do not turn off your computer or disconnect from your power source while updating the BIOS or you may harm your computer. During the update, your computer will restart and you will briefly see a black screen.

This driver has been tested by both the independent software vendor (ISV) and Dell on the operating systems, graphics cards, and application supported by your device to ensure maximum compatibility and performance. Details

Dell highly recommends applying this update as soon as possible. The update contains changes to improve the reliability and availability of your Dell system.