Using DFU via BLE with Bootloader API V1/SDK11

Hey,

we have to use BLE based DFU. Our Bootloader ist SDK11 based, so we just have the bootloader API V1.0 available.

10.000 devices are in stock, so we cannot change anything related to the bootloader. Now we enter the bootloader using a Python script and flash our updated firmware using Nordic DFU mobile app.

We failed to use nrfutil, because it seems not longer support SDK11 based bootloader.

We also failed to use this python project, because it uses gatttool, which ist decprecated:
https://github.com/bringert/nrf5-ota-dfu-python

How could we use BLE based DFU using a command line tool? An Python or Rust library would also a good solution for us.

Thanks.

Cheers, Michael

0 Einar Thorsrud 3 months ago

Hi Michael,

The latest version of nrfutil with support for the legacy bootlaoder was nrfutil 0.5.2, so this is what you need to use to generate the DFU .zip file. However, this does not provide a way to perform DFU over BLE. Please see this thread for more information.

Br,

Einar
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