Is it possible to untie iphone 4s from iCloud?

Question

iOS

Good afternoon, I bought a locked iphone 4s phone from a friend for 25 euros. Installed iOS 8.4
When downloading, the phone is activated.
linked to iCloud account. I read on the Internet there are several possibilities, but at the moment they do not work on iOS
.8.4 so) 3. dns bypass. crash setup application (works only with 8-8.3) 4. Downgrade to 5.1.1 with redsnow does not work (as I understand it is not possible to roll back at all) 5. There is another board from iphone 4s (but the black battery connector is torn off on the board and next to the soldering iron, three diodes C293 and R153 were torn off and ???)
Or is this board (blocked) already garbage and it's time to throw it away?
and the second board, what to do with it, is it possible to save it, it is completely Sim Free and is not tied to anything.

Answer 1

You can untie it only if you chat with the apple support, if there are checks (and a box) available.
Everything else is a scammer, and there are no solutions in public, except that DNS bypass is a neutered iPhone.