Bafang BBSHD 52v 1000w 28a Controller?

[Gytis2k11]

I'm seeing vendors selling Bafang BBSHD 52v 1000w 28a replacement controllers. Are these just a misrepresentation of the regular BBSHD 48v 1000w 30a controllers, or actually a new controller from Bafang?

I purchased that controller and it has nothing to do with bafang. I opened it up to compare it with stock hd controller and internally it looked poorly and old like insides of a old hifi system from the 80s. It cant be programmed. Bafang tool, stc and speeed app cant connect. And after little use got e30h