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  1. Arris Surfboard SB8200 Modem Question - Xfinity Community Forum

    Oct 19, 2024 · Arris Surfboard SB8200 Modem Question I recently replaced my Arris Surfboard SB8200 modem that I have been using for several years. It was apparently defective as I was only getting a …

  2. ‎DOCSIS 3.1 connectivity problem with ARRIS SB8200 | Xfinity …

    Jun 3, 2025 · The ARRIS SB8200 is listed as a compatible, DOCSIS 3.1 modem by Xfinity, so I would expect to get speeds up to 1 Gbps. The LEDs indicate it's operating at DOCSIS 3.0, not 3.1, so I'm …

  3. Arris SB8200 Upload Speed | Xfinity Community Forum

    Jun 9, 2025 · The Arris SB8200 will not support enhanced upload (mid-split) speed. The best you'll do is 40 Mbps. In my case, I switched over to the Netgear CM3000 which is qualified for mid-split.

  4. ARRIS SB8200 Firmware/Software Update? | Xfinity Community Forum

    Jul 2, 2025 · ARRIS SB8200 Firmware/Software Update? I own my personal Modem (ARRIS SB8200). I pay for very fast WiFi, but recently the connectivity and speed has been horrible. I have been trying …

  5. New Modem vs Old Modem | Xfinity Community Forum

    Jul 8, 2025 · New Modem vs Old Modem Having internet stability issue, so decided to replace 5 year old Arris SB8200 with new Hitron CODA56. Setting up the CODA was a bit more painful than expected …

  6. ‎SB8200 Modem Not Achieving 100 Mbps Upload Speeds | Xfinity …

    Dec 14, 2023 · Furthermore, the Arris SB8200 is capable hardware to support 100 Mbps upload speeds. If Arris SB8200 so happens to now not be "certified" then it is not our fault. The Xfinity portal/system …

  7. Recent upgrade, speed unchanged | Xfinity Community Forum

    Jul 29, 2025 · I purchased my own Arris SB8200 (v2 apparently) on Amazon. Typical speed test gave me the expected 350Mbps down and 20Mbps up or so. I then got the automatic upgrade back in …

  8. SB8200 Max Upload Speed | Xfinity Community Forum

    Jan 3, 2024 · SB8200 Max Upload Speed Hello, My internet plan recently changed from 800 down / 20 up to 800 down / 100 up. I own an Arris SB8200, but the max upload speed I've ever seen is still …

  9. Paying for a 2gb plan, but only receiving 1.2gb service | Xfinity ...

    Jan 23, 2025 · Hello, We received notification from Xfinity that our existing cable modem (ARRIS SB8200) was too old to take advantage of our 2gb data plan. We were grandfathered into the 2gb …

  10. ‎Not Receiving DOCSIS 3.1 | Cox Community

    Mar 2, 2025 · -Arris Surfboard SB8200 -AX1800 Router I have the 1Gig plan, and my hardware supports DOCSIS 3.1. To add to this, I cannot access my modem's settings to check signal levels or see if i …