Arduino 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

v1.25.0 (2025-04-15) .hex / [.bin] / [Release notes] (latest)
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

v1.26.0-preview.148.g49f81d504 (2025-05-22) .hex / [.bin]
v1.26.0-preview.146.g7f6fedef2 (2025-05-21) .hex / [.bin]
v1.26.0-preview.142.ga1ee42cd3 (2025-05-21) .hex / [.bin]
v1.26.0-preview.122.g90aeac800 (2025-05-16) .hex / [.bin]
(These are automatic builds of the development branch for the next release)