I'm learning how to use OTA DFU (via BLE) now. I have Python 2 and 3, pip installed in my Win10 laptop. When I install the nrfutil with PowerShell, I had some errors (see screenshot #1). I also followed this link to use python 2 to install nrfutil. However, still unsuccessful (see screenshot #2). Any one has some hints/ideas, please?
