Flash AtomVM firmware to your microcontroller — directly from your browser.
Latest Stable Release — v0.6.6
23 Jun 2025 · ChangelogESP32
ESP32
ESP32-C2
ESP32-C3
ESP32-C6
ESP32-H2
ESP32-P4
ESP32-S2
ESP32-S3
Web Flasher is not available because your browser does not support Web Serial.
Use Google Chrome or Microsoft Edge instead.
Alternatively Download and Flash the firmware manually:
Download v0.6.6 release
Docs: Flashing a binary
Rpi Pico
Pico
Pico W
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Flash Raspberry Pi Pico
1. Enter (UF2) DFU Mode
Press and hold the BOOTSEL button on your Pico while plugging in the USB cable.
2. Ensure DFU Drive Is Mounted
Your computer should detect a new drive (e.g. RPI-RP2). The name may vary depending on your board hardware and bootloader.
3. Download & Copy UF2 to the Drive
Click the button below to download the UF2 file, then copy it to the DFU drive. The device will reboot automatically once the transfer completes and start running AtomVM.
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