Espressif Arduino core for ESP32 releases
critical fixEspressif Arduino core for ESP32 is tracked under makers & open firmware. Its latest version, 3.3.12, shipped on Sep 18, 2026. Firmwarely has recorded 2 versions since Jul 22, 2026.
- Latest version
- 3.3.12
- Released
- Category
- Makers & open firmware
- Last checked
How to update Espressif Arduino core for ESP32
- Flash with esptool or the ESP Launchpad web installer from the product page.
- Hold BOOT while connecting USB to enter download mode.
Always install releases from the project itself. Firmwarely links out; it never hosts downloads.
What changed
What's Changed: fix(webserver): Harden security and fix hangs ci(upload): Optimize scripts and upload test build(deps): bump cryptography from 48.0.1 to 50.0.0 in /tests by in https://github.com/espressif/arduino-esp32/pull/12804 docs(compatibility): Add notes on ESP8266 compatibility docs(adc): Co…
Version history
| 3.3.12 | |
| 3.3.11 |
FAQ
What is the latest version of Espressif Arduino core for ESP32?
Version 3.3.12, released Sep 18, 2026. This page is refreshed every hour from the project's release page.
How do I update Espressif Arduino core for ESP32?
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 Espressif Arduino core for ESP32 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 Espressif 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 Espressif Arduino core for ESP32
One email when a new release or a security fix ships: weekly and free for up to 3 devices, daily on Pro.