I just bought a brand new SB8200 modem to upgrade to gig service from my prior Blast service and a Arris docsis 3.0 modem. i was told this new modem works for Xfinity gig internet service. Once i swticed to gig, the modem worked when I hard wired my laptop, but failed to connect to my Orbi router RBK 843. Even my smart TV would not work--so steaming services were not working.
i called back to tech help and they could not solve the problem.
following their suggestion I went back to my old modem and my prior Blast service--i want to use the new modem and upgrade of 1 gig service. Please help.
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