Trying to do update over BLE

[AndreKR]

I'm trying to do a firmware update over BLE.

Here's what I did:
- I created a new application from sample "smp_svr" because I think that is where I can see how to do firmware updates over BLE.
- Add a build configuration for nRF52-DK.
- Add CONFIG_MCUMGR_SMP_BT=y to prj.conf
- Build and flash
- Copy build/zephyr/dfu_application.zip to an Android smartphone
- On the phone, open nRF Connect
- Connect to "Zephyr"
- Click the DFU button, select the file, it asks to pair, I pair.

After that it just says "Connecting...".

I have used an nRF52840-Dongle to capture a packet dump of the conversation between the devices. The file is here. The failed DFU attempt starts about 30 seconds into the dump.

[Hung Bui]

Hi Andre,

Could you try to follow this guide: https://devzone.nordicsemi.com/guides/nrf-connect-sdk-guides/b/software/posts/ncs-dfu

You may need to add smp_bt_register() into your code. 

I would suggest to you to also have a look at the overlay-bt.conf in the smp_svr example. 

[AndreKR]

That was the missing magic. After copying over the contents of overlay-bt.conf to prj.conf the BLE firmware update works.

I haven't tried out the guide but it also looks extremely helpful for adding BLE update functionality to my own application.