Click the "Select File" button above, and choose your DFU file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert DFU to another file type
To convert your DFU file to another format, you need DfuSe Utility or other System software.
Convert a file to DFU
To convert other file formats to the "Firmware Image" file type, you need software like DfuSe Utility or a similar tool.
About DFU files
The .DFU file extension primarily represents a Device Firmware Upgrade file, a binary format used to update the system software of hardware components over USB. This standard is heavily utilized by STMicroelectronics for their STM32 microcontrollers, as well as by vendors like Cambridge Silicon Radio (CSR) and even Apple for iOS device recovery. While efficient for secure hardware flashing, .DFU files are effectively "black boxes" to standard users. They cannot be opened in text editors or media players, and they often contain proprietary headers that make them incompatible with generic programmers or JTAG tools. Users frequently encounter friction when trying to analyze firmware or flash a device using a tool that only accepts raw binary formats. Consequently, engineers and enthusiasts often need to convert .DFU to BIN (Raw Binary) or HEX (Intel Hex) to allow for reverse engineering in tools like Ghidra or to flash chips using universal programmers. In the context of Android development, a .DFU might essentially be a ZIP archive, in which case "converting" it effectively means extracting the internal contents for inspection.
Convert.Guru analyzes your DFU file, detects the exact format, and lets you read the text inside.
If you want to convert DFU file to BIN, HEX, GPD, SYS, DLL, EXE, DRV, VXD, 386, COM, BAT or CMD, you can use DfuSe Utility or similar software from the "Firmware Upgrade Package" category. In the File menu, look for Save As… or Export….
To convert MSI, EXE, REG, MST, LNK, CAB, CAT, DRV, INF, SYS, MSU or DLL files to DFU, try DfuSe Utility or another comparable tool in the "Firmware Upgrade Package" category.
The DFU Converter Story
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our DFU converter.