nRF52840 Meshtastic Firmware DFU OTA
MTools BLE provides the unified operation method for Android and iOS clients, and provides convenient features such as fast firmware download and one-click upgrade for nRF52 device DFU.

Downloads
Steps
Go to
Tool>Meshtastic®in App.Select the device from list and the firmware will be downloaded.
Connect to your nRF52 device.
Start to upload the firmware.
Settings
Firmware Repository
For Officially Supported Devices: github.com/meshtastic/firmware
For Community Supported Devices: github.com/mtoolstec/mt-firmware
Number of packet
For original bootloader: Recommand 5 to 8. If larger it will result failures during OTA.
For advanced bootloader: Recommand 60, which take around 90 seconds for firmware OTA.
Single Firmware Download
Enable download single firmware will download only the firmware for you device instead of the whole nRF52 package.
Notice
OTA firmware updates come with an increased risk of failure. If the update process fails, your device will be left in a non-working state and require the Drag and Drop actions for recover the firmware.
The legacy DFU service can only provide around 1KB/s speed for data transfer. The speed and remaining time will be show when uploading.
nRF52 devices from RAK are able to accept OTA firmware updates from a mobile device over bluetooth. Older T-Echo bootloaders do not have OTA support.
Trademark
Meshtastic® is a registered trademark of Meshtastic LLC.
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