Does ASICBOOST only work on Bitmain miners and how does one enable it on these systems?

Does ASICBOOST only work on Bitmain miners and how does one enable it on these systems?

From what I read ASICBOOST gives you a 30% better hash rate, does this only work on all or certain Bitmain asic miners? And how does one enable this hidden feature in these miners?

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