I want to remove/replace the daughterboard/charging assembly, completely. The RH side appears to adhere to the chassis. What's the best method for separation?

What's the difference between the International (D821) & North American (D820) charging circuits?

Are they interchangeable or cross-compatible? Why/why not?

Aren't USB standards universal?

(IEC 62680)

Did you get it off?

Glued? It's soldered.

What's the difference between the International & North American charging circuits?

Are they interchangeable or cross-compatible? Why/why not?

Aren't USB standards universal?

(IEC 62680)

Which radio? There are several. What are you trying to achieve? Help us to help you.

Reflash it with `adb`. Download the relevant hammerhead `.rom` file from the Google/Android developer website.

It's called a Trigram, Tri-Wing, or Y-Tip. Not difficult to find online or at your local hardware store. They're often included in interchangeable screwdriver tip assortments.

Hahahaha first few sentences caught me off guard

Agreed. It reeks of desperation.