stm32flash ☆

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Description:
Open source flash program for STM32 using the ST serial bootloader

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: stm32 microcontroller firmware bootloader serial embedded

Install: brew install stm32flash

About:
stm32flash is a command-line utility designed to interface with STM32 microcontrollers via their built-in serial bootloader. It enables users to flash firmware, read/write memory, and erase device contents without requiring a hardware debugger. This open-source tool is essential for in-system programming and field updates of STM32-based devices.

Key Features:

Read and write flash memory via UART
Erase device memory or perform mass erase
Support for STM32 bootloader protocol
Command-line interface for automation
Open source and cross-platform

Use Cases:

Flashing firmware onto STM32 microcontrollers in production or field environments
Updating bootloader or application code without a JTAG/SWD debugger
Reading memory contents for backup or reverse engineering analysis

Alternatives:

ST-Link Utility – Official GUI tool from STMicroelectronics, requires proprietary hardware (ST-Link)
OpenOCD – More versatile debugger that supports many targets, but more complex to configure for simple UART flashing

Version History

Detected	Version	Rev	Change	Commit
Sep 15, 2025 12:17pm		0	VERSION_BUMP	c586027d
Sep 13, 2024 2:23am		0	VERSION_BUMP	f5afb2a6