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.

Dell XPS 15 9550 System BIOS

Restart required Installed This file was automatically installed as part of a recent update. If you are experiencing any issues, you can manually download and reinstall.
XPS 15 9550 01.01.15 BIOS
Recommended

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Fixes & Enhancements

1. Improve Audio performance
2. Improve NVMe Battery Life
3. Fix CPU i7 CPU performance became low after AC remove and insert.
4. Enhance system Boot time
5. Fix System may saw NO Boot Devie error message with NVMe storage.
6. Enhance battery mode sleep resume time too long.
Read More

Version

01.01.15, 01.01.15

Release date

05 Jan 2016

Download Type

System BIOS

Category

BIOS

Importance

Recommended
Dell Technologies recommends applying this update during your next scheduled update cycle. The update contains changes to maintain overall system health. It ensures that the system software remains current and compatible with other system modules (firmware, BIOS, drivers, and software) and may include other new features.
Available formats View Important Information
File Format: CPG BIOS Executable for Windows/DOS
File Name: XPS_9550_1.1.15.exe
File Size: 9.17 MB
This is a large file. Depending on your connection speed, it may take some time to download.
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.
MD5:
00c2bb2b9ad1281368d20a82474dee92
SHA1:
7bfd6ee0705c1b2c03da555e48278120037b5260
SHA-256:
7153c102f78361d24729aaaa7422e1046cc360fd57b27fdba762f8fe81f39a3a

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

Additional details

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Please follow below steps after BIOS flash finished: (One time Job)
1. Shut Down the system then press Power button again
2. Press F2 to enter BIOS Setup menu
3. Click the "Restore settings" in right bottom side
4. Chose the BIOS Defaults then Click OK
5. Click Yes to Load BIOS Default
6. Click Exit in in right bottom side
XPS 15 9550 System BIOS
Download file to Desktop
The file XPS_9550_X.X.X.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.
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Run the BIOS update utility from Windows environment
1. Double click the Icon on your desktop labeled XPS_9550_X.X.X.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 XPS_9550_X.X.X.exe to a bootable USB key.
2. Boot from the USB key to the DOS prompt.
3. Run the file by typing Y:\ XPS_9550_X.X.X.exe (where Y is the drive letter
where the executable is located).
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Reboot will be required

Need help with BIOS issues?

Find a solution in Dell's BIOS troubleshooting guide

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