The dongle is produced in Shenzen, it's not hard to find the supplier under the pretences that you are a mod-chip importer.
The rumours going around about scene developers producing the dongle etc are exactly that, rumours. It was designed and produced by electronic engineers in a large Chinese factory whose job is typically to reverse-engineer goods and reproduce them.
It was of course, then cloned by other electronic engineers who have the exact same purpose. It's a dog-eat-dog world when you don't have to abide by copyright laws.
I am not a developer. That doesn't mean I don't know what i'm talking about.