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 XPS 13 9343 System BIOS

XPS 13 9343 A04 BIOS

Fixes & Enhancements

1. Improved Keyboard behavior
2. Update CPU Microcode.


Version A04, A04



Release date

25 May 2015

Last Updated

25 May 2015


Available formats

File Format:Windows/DOS
File Name:9343_BIOS_Rev_A04.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.

A03,A03 30 Mar 20157:09:42 AM
A02,A02 22 Mar 201510:23:08 AM
A01,A01 25 Feb 20157:44:28 AM
A00,A00 08 Jan 20153:39:42 AM
Installation instructions
Download file to Desktop
The file 9343_BIOS_Rev_XXX.exe is using the Universal (Windows/DOS) format and
is designed to be directly executed from Windows environment.
1. Click Download now. The File Download window appears.
2. Click the Save button. The Save As window appears.
3. Select Desktop using the drop-down menu to the right of Save in.
4. Click the Save button. A progress meter moves as the download is completed.
5. If necessary, click X in the upper right-hand corner of the Download Progress
Window to close it upon completion.

NOTE: Shut down all other applications prior to running the BIOS update utility. The
update utility reboots your system in order to get the new BIOS loaded.
Run the BIOS update utility from Windows environment
1. Double click the Icon on your desktop labeled 9343_BIOS_Rev_XXX.exe. the Dell
BIOS Flash window appears.
2. Click the Continue button. The message Pressing OK will close all applications, shut
down Windows, Flash the BIOS, then reboot appears.
3. Click the OK button. The system will restart and the BIOS Flash will be completed.

Run the BIOS update utility from DOS environment (Non-Windows users)
NOTE: You will need to provide a bootable DOS diskette. This executable file does not
create the DOS system files.
1. Copy the file 9343_BIOS_Rev_XXX.exe to a bootable USB key.
2. Boot from the USB key to the DOS prompt.
3. Run the file by typing Y:\ 9343_BIOS_Rev_XXX.exe (where Y is the drive letter
where the executable is located).

Perform the BIOS update from the BIOS Boot Menu, independent of operating system, if BIOS supported.
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: Please make sure you suspend BitLocker encryption before updating BIOS on a
BitLocker enable system. If you doesn't enable BitLocker on your system you can
ignore it.
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 recommends applying this update during your next scheduled update cycle. The update contains feature enhancements or changes that will help keep your system software current and compatible with other system modules (firmware, BIOS, drivers and software).