Adafruit CircuitPython releases
currentAdafruit CircuitPython is tracked under makers & open firmware. Its latest version, 10.3.1, shipped on Sep 14, 2026. Firmwarely has recorded 2 versions since Aug 31, 2026.
- Latest version
- 10.3.1
- Released
- Category
- Makers & open firmware
- Last checked
How to update Adafruit CircuitPython
- Read the release notes first — firmware changes can require re-doing your config or calibration.
- Use the project's own installer where it has one: a web flasher over USB, or an over-the-air update in its web UI.
- Otherwise build or download the binary for your exact board from the releases page — the wrong board file will not boot.
- Keep the previous firmware image and your config backed up so you can roll back.
Always install releases from the project itself. Firmwarely links out; it never hosts downloads.
What changed
This is CircuitPython 10.3.1, a bugfix revision of CircuitPython, and is a new stable release. Highlights of changes since 10.3.0: Allow importing turbo ( and) .mpy files on RP2xxx boards. More to come. Espressif ESP32-C5 support. Espressif and nordic BLE fixes that improve BLE workflow. Many other…
Version history
| 10.3.1 | |
| 10.3.0 |
FAQ
What is the latest version of Adafruit CircuitPython?
Version 10.3.1, released Sep 14, 2026. This page is refreshed every hour from the project's release page.
How do I update Adafruit CircuitPython?
See the step-by-step above. Pull the new image or package and restart the service. Read the release notes and back up the data directory first; most projects can't downgrade once the database has migrated.
How does Firmwarely know when there's a new version?
Every hour we read the project's official release page for Adafruit CircuitPython and record the version, date and changelog. Subscribers watching it get an email when it changes: the next morning on Pro, in the Monday roundup on the free plan.
Is this an official Adafruit page?
No. Firmwarely is independent. Project and product names belong to their owners; always install releases from the project's own source.
Get alerts for Adafruit CircuitPython
One email when a new release or a security fix ships: weekly and free for up to 3 devices, daily on Pro.