Powering RadioMaster Pocket, Zorro and similar radios through USB without a battery

[short rivet]

There is a trick to powering these radios via the data USB port, due to how the bootloader mode is handled.

Notice: If anything breaks, that's on you. Just because it works with my RM Pocket, doesn't mean it's safe.
I would be wary of trying this with a radio with a high power TX module like a Boxer ELRS, unless the ELRS module has been disabled beforehand.

Pre-requisites:

1. A radio like RM Pocket
2. A PC that can run Betaflight Configurator (yes, really)
3. A USB-C data cable that can transfer data between the PC and the Radio. (try an A-C cable if C-C doesn't work)

New automated tool:

So, I made a tool for this. It's a wizard, it will help you through the process.
https://ggmaniack.github.io/radio-dfu-reboot/

Use it with Chrome or a Chrome-like browser, on the PC you want to run the simulator on.