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Drag & Drop nRF52 & RP2040 Firmware Updates

Flash Firmware​

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You may now use the Meshtastic Web Flasher to download and copy firmware to your nRF52 or RP2040-based devices. Alternatively, follow the instructions below to download and install firmware.

nRF52​

  1. Download and unzip the latest firmware from Meshtastic Downloads.
  2. Connect your device to your computer with a USB data cable.
  3. Double click the reset button on your device (this will put it into bootloader mode).
  4. Notice a new drive will be mounted on your computer (Windows, Mac, Linux, or Android).
  5. Open this drive and you should see three files: CURRENT.UF2, INDEX.HTM, and INFO_UF2.TXT.
  6. Copy the appropriate firmware file (firmware-DEVICE_NAME-X.X.X-xxxxxxx.uf2) from the release onto this drive.
  7. Once the file has finished copying onto the drive, the device will reboot and install the Meshtastic firmware.

RP2040​

  1. Download and unzip the latest firmware from Meshtastic Downloads.
  2. Press the BOOTSEL button and while keeping it pressed, connect the device to your computer via a USB cable.
  3. Notice a new drive will be mounted on your computer (Windows, Mac, Linux, or Android).
  4. Open this drive and you should see two files: INDEX.HTM and INFO_UF2.TXT.
  5. Copy the appropriate firmware file (firmware-DEVICE_NAME-X.X.X-xxxxxxx.uf2) from the release onto this drive.
  6. Once the file has finished copying onto the drive, the device will reboot and install the Meshtastic firmware.

Connect and Configure Device​

After flashing the Meshtastic firmware to the device, you can proceed with the initial configuration.

Connect and Configure Device

Potential Flashing Edge Cases​

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Before flashing confirm that you have RAK4631 and not a RAK4631-R If this is not the case, fear not. The hardware is identical but requires changing the bootloader. Instructions on how to do this are located here.

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Previous versions of the Meshtastic firmware may save stale data, causing devices to get stuck in a crash loop during startup. If you experience issues when upgrading your nRF52 device from a previous version of Meshtastic, you may need to perform a full factory reset of the internal flash memory.

Follow the guide to factory erase your nRF52 device before continuing to flash firmware.