Chapter 41: DFU-Based Firmware Upgrade Solution for W55MH32

Device Firmware Update (DFU) is a technology that allows firmware updates of embedded devices without physical disassembly.

ronpang

Published February 04, 2026

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Project description

Chapter 41: DFU-Based Firmware Upgrade Solution for W55MH32 DFU Introduction Device Firmware Update (DFU) is a technology that allows firmware updates of embedded devices without physical disassembly. For the W55MH32 chip, DFU enables reliable firmware recovery and updates directly through the USB interface. Features Bootloader Device recovery from bricked state Dual-bank flash with rollback protection CRC validation for firmware integrity Programming USB DFU class protocol support Works with DFU-util and STM32CubeProgrammer Supports binary and hex file formats Security Firmware signature…

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