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.
If anything can do it, I bet the Flipper Zero could.
I do not believe there is any way to change it without connecting directly to the device’s circuitry, and in some widgets it may even be stored in the ROM, so a Flipper Zero would not be of much help (unless the board has some sort of programming interface you could connect to the Flipper Zero).
Some have interfaces that are accessible via Bluetooth but, a Bus Pirate would probably be more useful for most as you note.
I’m sure you’re right, but I’ve seen that little orange devil do very naughty things with the BT protocol before. My coworker has one and it makes me very uneasy with my BYO devices.