OTA update with nRF connect BLE Desktop app

Hello,

I'm trying to update my nRF52832 over the air. I'm using the nRF52832 Feather from Adafruits. I'm using this platform + software to make the software development a bit easier by using Arduino.

With my phone I can update OTA:

But with the desktop app I can not succeed:

The dfu button is not there, I'm using exactly the same hardware with exactly the same firmware.

The only thing I noticed is it states 'legacy' with the DFU, but it is still strange that it works with the android app, but not desktop. Anybody knows how to solve this ?

Thanks in advance.

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