Stuck at square one I'm afraid - I can't download the nRF5 SDK...
I've tried many times to download the SDK from this link: https://www.nordicsemi.com/Software-and-Tools/Software/nRF5-SDK#Downloads
Each time it gets to between 60-80MB very quickly, then suddenly stops progressing, then eventually stops altogether with a "protocol error" message.
I've tried it on 2 different computers (both MacBook Pros running different versions of macOS), several different browsers, and two different internet connections (my home wifi router and using my phone as a hotspot), and always the same result..
Any suggestions much appreciated!