Extract text from firmware update files (DFU)
To convert DFU firmware updates to another format, you need DfuSe Utility or other System software.
To convert other file formats to the "Firmware Update File" file type, you need software like DfuSe Utility or a similar tool.
.DFU files are Device Firmware Update packages used to upgrade the low-level operating software of hardware devices. They are utilized by a wide variety of hardware manufacturers, including STMicroelectronics, Apple (for iOS devices), Cambridge Silicon Radio (CSR), and Polycom for Android OTA (Over-The-Air) updates. These files contain the raw binary instructions that microcontrollers and processors need to function. You typically apply them using specialized hardware flashing tools like ST DfuSe, Apple iTunes, or the Android Debug Bridge (ADB).
The main disadvantage of .DFU files is severe fragmentation. A .DFU file meant for an Apple device is entirely incompatible with a .DFU file built for an STMicroelectronics chipset or a Dynojet Power Commander. They are proprietary, heavily locked-down binary payloads. If you try to open them in a standard text editor, you will just see garbled text. Furthermore, flashing the wrong file can permanently brick your hardware.
Users often want to convert or extract .DFU files to access the underlying BIN, IMG, or HEX files for reverse engineering or manual flashing. In some cases, such as Android OTA updates, the .DFU is actually just a standard ZIP archive in disguise.
Because this file format is difficult to open or convert, standard online converters fail completely. Often, only the original manufacturer's software can properly read, verify, or export the firmware data. If our analysis detects a supported underlying or embedded format - like a standard ZIP archive - viewing or extraction may still be possible.
Convert.Guru analyzes your DFU file, detects the exact format, and lets you read the text inside.
Users also converted ZIP, DLL, BIN, SWI, UPG, ZWDF, HEX and GPD files.
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 "Device Firmware Update" 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 "Device Firmware Update" category.
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.