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How to Build High-Performance Remote Firmware Updates with WIZnet W5500 on STM32?

This commercial firmware architecture uses WIZnet W5500 with an STM32 microcontroller to perform HTTP-based remote firmware updates through In-Application Progr

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Published July 18, 2026

Original author: bond007Original source (new tab)

How to Build High-Performance Remote Firmware Updates with WIZnet W5500 on STM32?

Project description

How to Build High-Performance Remote Firmware Updates with WIZnet W5500 on STM32? Summary This commercial firmware architecture uses WIZnet W5500 with an STM32 microcontroller to perform HTTP-based remote firmware updates through In-Application Programming. The project supports HTTP GET and POST workflows, checksum-based image validation, and a dual-bank rollback concept intended to preserve the previous firmware when an update fails. W5500 supplies the Ethernet MAC/PHY, hardwired TCP/IP processing, socket engine, and network buffers, while the STM32 manages HTTP data, Flash programming…

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