MicroPython 1.27
10 December 2025 · Release
Upstream notes: v1.27.0.
New silicon
- ESP32-C5 and ESP32-P4, including P4 paired with a C5 or C6 radio coprocessor.
- STM32U5, with a NUCLEO-U5A5ZJ-Q board profile — USB, ADC, DAC, UART, I2C, SPI, RTC.
Port tiers
Ports are now labelled by how complete and how well tested they are. Use that when a machine class is missing: it may be a tier issue, not a bug in your script. See ports.