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So it is correct if we really stop providing service to firmware which violate the license there will be no one left, excluding braiins.
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False.
Even the Bitmain S9 source for their modified cgminer is available online.
Just every aftermarket firmware likes to imagine that they can make minor changes to the code and keep those changes to themselves.
Bunch of scammers, to which I'd add you to the list, since you are continually trying to tell me why you should be allowed to violate the license, and that you do violate the license.