Portenta C33

Vendor: Arduino
Features: BLE, Ethernet, External Flash, Secure Element, USB-C, WiFi
Source on GitHub: renesas-ra/ARDUINO_PORTENTA_C33
More info: Website

Installation instructions

dfu-util

This board can programmed via DFU bootloader, using e.g. dfu-util. To enter the DFU bootloader, double tap the reset (blue) button, or you can use machine.bootloader() from the MicroPython REPL.

dfu-util -a 0 -d 2341:0368 -D build-ARDUINO_PORTENTA_C33/firmware.bin -Q # -s :leave

Firmware

Releases

v1.26.1 (2025-09-11) .hex / [.bin] / [Release notes] (latest)
v1.26.0 (2025-08-09) .hex / [.bin] / [Release notes]
v1.25.0 (2025-04-15) .hex / [.bin] / [Release notes]
v1.24.1 (2024-11-29) .hex / [.bin] / [Release notes]
v1.24.0 (2024-10-25) .hex / [.bin] / [Release notes]
v1.23.0 (2024-06-02) .hex / [.bin] / [Release notes]
v1.22.1 (2024-01-05) .hex / [.bin] / [Release notes]
v1.22.0 (2023-12-27) .hex / [.bin] / [Release notes]
v1.21.0 (2023-10-05) .hex / [.bin] / [Release notes]

Preview builds

v1.27.0-preview.313.g00a926e99 (2025-10-13) .hex / [.bin]
v1.27.0-preview.262.g35d07df44 (2025-10-02) .hex / [.bin]
v1.27.0-preview.252.gb2871e0d0 (2025-10-01) .hex / [.bin]
v1.27.0-preview.208.gadf631988 (2025-09-26) .hex / [.bin]
(These are automatic builds of the development branch for the next release)