Flashing MeshCore Firmware OTA: The Definitive Guide

Step-by-Step: OTA Update

These OTA update instructions are designed for repeaters, not companions. The process for companions needs to be documented.

The WebSerial API is only available in Chromium-based browsers (the WebSerial API shipped in Chrome/Edge 89 - see MDN/Can I Use):

Google Chrome (version 89 or later) - recommended
Microsoft Edge (version 89 or later) - supported
Firefox, Safari - NOT supported. WebSerial is not implemented in these browsers.

Download the nRF Device Firmware Update app.

Note: After installation, this app is listed as "DFU" in the apps list, NOT nRF Device Firmware Update.

Android: https://play.google.com/store/apps/details?id=no.nordicsemi.android.dfu&hl=en-US
iOS: https://apps.apple.com/us/app/nrf-device-firmware-update/id1624454660

Visit flasher.meshcore.io
Find your device and select the repeater firmware you run
Look for the following message:
- We strongly recommend installing OTAFIX Bootloader by @aoltaco for more reliable Bluetooth OTA DFU.
Click the OTAFIX bootloader link to download the bootloader
Place the device into DFU mode (double press RESET on many devices)
Verify the device shows up as a drive on your OS
- Windows: In Windows Explorer, look for a new device, such as HT-n5262 (G:)
- For OS X:
Drag and drop the downloaded bootloader file onto the new device
The device will reboot and you can now flash the device OTA

On flasher.meshcore.io, download the firmware images for the devices you want to flash

Progress is slow. Ensure you have an unobstructed path to the device. External Bluetooth antennas help tremendously.