FWIW my brother has a Hero 3 Silver and got all kind of problem with it. Not booting, freezing, firmware etc. He serviced it and is supposed to have got back a

FWIW my brother has a Hero 3 Silver and got all kind of problem with it. Not booting, freezing, firmware etc. He serviced it and is supposed to have got back a new one, but years later it's worse and worse (I think it's a RAM problem or something, who knows). Now the warranty is over and the customer service is still useless with their stock sentences. So he need a new one and I'm guessing it's not gonna be a GoPro.