Diamond Flower (DFI) BIOS AD77 Driver Download (Official)

2 Ratings

Supported Models

BIOS AD77 Driver


Diamond Flower (DFI)

Supported Operating Systems

Not Applicable

File Name

AD770827.zip (179.5 KB)


Revision A (KT400A) (27-Aug-2003)

Find Related Drivers

Uploader Notes


BIOS Firmware File

1. To switch the north bridge from KT400 to KT400A.

2. For revision AG0 or newer. Please check the revision code at the lower right corner of label affixed to the printer port.

3. Also support Duron Applebred and Athlon XP Barton CPU.

3. If the revision is AF0 or older, please keep the latest BIOS with date code 2003/08/13 or upgrate to 2004/11/02. (13-Aug-2003 or 02-Nov-2004)

Uploaded By

Jegadesh (DG Staff Member) on 2-Jan-2007

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
774A0827.BIN 262.1 KB 27 Aug 2003
AWDFLASH.EXE 41.0 KB 21 Jul 2003

How to Update BIOS AD77 Device Drivers Quickly & Easily

Step 1 - Download Your Driver

To get the BIOS AD77 driver, click the green download button above. After you complete your download, move on to Step 2.

If the driver listed is not the right version or operating system, search our driver archive for the correct version. Enter BIOS AD77 into the search box above and then submit. In the results, choose the best match for your PC and operating system.

Tech Tip: If you are having trouble deciding which is the right driver, try the Driver Update Utility for BIOS AD77. It is a software utility which automatically finds and downloads the right driver.

To find the newest driver, you may need to visit the Diamond Flower (DFI) website. Most major device manufacturers update their drivers regularly.

Step 2 - Install Your Driver

Once you have downloaded your new driver, you'll need to install it. In Windows, use a built-in utility called Device Manager, which allows you to see all of the devices recognized by your system, and the drivers associated with them.

How to Open Device Manager

  • In Windows 10 & Windows 8.1, right-click the Start menu and select Device Manager

  • In Windows 8, swipe up from the bottom, or right-click anywhere on the desktop and choose "All Apps" -> swipe or scroll right and choose "Control Panel" (under Windows System section) -> Hardware and Sound -> Device Manager

  • In Windows 7, click Start -> Control Panel -> Hardware and Sound -> Device Manager

  • In Windows Vista, click Start -> Control Panel -> System and Maintenance -> Device Manager

  • In Windows XP, click Start -> Control Panel -> Performance and Maintenance -> System -> Hardware tab -> Device Manager button

How to Install a driver from Device Manager

  1. Locate the device and model that is having the issue and double-click on it to open the Properties dialog box.

  2. Select the Driver tab.

  3. Click the Update Driver button and follow the instructions.

In most cases, you will need to reboot your computer in order for the driver update to take effect.

Tech Tip: Driver downloads and updates come in a variety of file formats with different file extensions. For example, you may have downloaded an EXE, INF, ZIP, or SYS file. Each file type has a slighty different installation procedure to follow.

For more help, visit our Driver Support Page for step-by-step videos on how to install drivers for every file type.

This website is not affiliated with Diamond Flower (DFI). All company names/logos are properties of their owners.
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