Hello Remi,thank you for your detailed reply - this confirms my worst fears. It looks like it is not possible to debug the BlueNRG2 at all, at least with the ST-Link. Maybe a Segger JProbe works, but these are pricey and not so easy to buy.Either way...

Hello,I wanted to second this. It also happens on my machine. I can write programs via the Navigator, but neither with KEIL nor with the STLINK.Tam