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DFU File

What are DFU files and how to open them

Are you having problems opening a DFU file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your DFU files.

What is a DFU file?

DFU files have multiple uses, and Device Firmware Upgrade format is one of them. Read more about the other uses further down the page.

Device Firmware Upgrade format

.DFU files are the file formats used in upgrading the firmware of devices particularly through the Universal Serial Bus (USB). A firmware is a program that contains information that instructs a specific machine what to do. Firmware upgrades happen when a machine's firmware is upgraded with newer codes or instructions in order for it to function more efficiently.

Firmware upgrades are done using the USB port of a specific device, in which the .DFU files are then specifically read by the machine, signaling it to read its contents with or without the intervention of users.

How to open DFU files

Important: Different programs may use files with the DFU file extension for different purposes, so unless you are sure which format your DFU file is, you may need to try a few different programs.

While we have not verified the app ourselves yet, our users have suggested a single DFU opener which you will find listed below.

Last updated: March 10, 2023

All known file formats using extension .DFU

While Device Firmware Upgrade format is a popular type of DFU-file, we know of 2 different uses of the .DFU file extension. Different software may use files with the same extension for different types of data.

DfuSe device firmware

We know that one DFU format is DfuSe device firmware. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Various apps that use files with this extension

These apps are known to open certain types of DFU files. Remember, different programs may use DFU files for different purposes, so you may need to try out a few of them to be able to open your specific file.

iTunesiTunesUser submitted

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about DFU file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.