I found some tutorials, like this one here that basically shows, that it is technically possible. There was one answer on quora recommending development kit from Nordic to do it. But I assume that without soldering and stuff it wouldn’t be possible and it is not as easy as flashing some firmware via usb cable connected to some device.

So is there any easy way of changing those funky factory implemented names with some regular and easily accessible kit and software? I’m just curious but if there was an easy way for doing it, I’d definitely give it a try.