I’m using the Adafruit Feather nRF52840 Express (Product ID 4062) with the Arduino IDE (Adafruit nRF52 core) and trying to implement over-the-air firmware updates using a Blues Notecard and Notehub.
When I export compiled binaries from Arduino I receive .hex and .elf files, which I then convert to .bin and package using the Blues binpack tool as required for the Notehub OTA workflow.
However, when attempting the update, the DFU update fails on the device.
My question is about bootloader compatibility:
Does the default UF2 bootloader on the Feather nRF52840 Express support firmware updates delivered through an external OTA system like Blues Notehub, or would this require a different bootloader or a custom firmware update implementation in the application?
Just trying to confirm whether the standard Feather bootloader supports this type of OTA pipeline, or if my approach is incompatible with the default bootloader.
Thank you!