U

Visitor

 • 

5 Messages

Tue, Apr 19, 2022 12:28 AM

Upgrade my own modem

I am using my own Cisco cable modem with Comcast internet for a while now, at least 10+ years.  Cisco modem is DOCSIS 3.0, handling up to 268 Mbps download speed. I recently upgrade to 600 Mbps download plan and Cisco modem cannot keep up. I plan to replace it with Motorola MB6811 which can handle up to 2 Gbps.

The last time I installed and activated the Cisco modem, it was a less-than-pleasant experience. I had to connect to Comcast tech support on phone, go back-and-forth, configure this and that before the internet was connected correctly. 

For the upcoming modem upgrade, Xfinity FAQ saying that you can activate it yourself. Just install the Xfinity app on your smartphone and follows the instruction. It sounds too good ... So I just want to ask the community if anyone has done upgrade modem yourself and is it a smooth experience. 

Nathan

Accepted Solution

XfinityNico

Official Employee

 • 

354 Messages

2分前

Hello @user_728be8, thanks for reaching out for help on our forums! Activating your own modem using our app is definitely easy. Here are detailed instructions to do so: https://comca.st/3vvujU5. If you run into any issues at all activating the modem on your own with the instructions provided please let us know and we can assist with activating it for you. It sounds like you've already checked our certified device list that will work with your new speed but here is also the link just in case: https://comca.st/3xPwDb4

We always want to set you up for success whenever any changes are made and are happy to help any way we can. 

NoNoBadPuppy

Contributor

 • 

357 Messages

2分前

Please be aware that reverting back to hardware provided by xfinity will be a huge step backward. You will have far less control over your network.  You would be better off buying one of the modem/routers on the compatibility list for your speed tier.  I would suggest you buy one that can handle speeds higher than your current tier; that way you have the opportunity to move up to a faster tier.

Visitor

 • 

5 Messages

2分前

Thank you for the advice.  I plan to buy (Xfinity certified) Motorola MB6811 cable modem from Amazon then install & activate myself. That's why I ask for other's experience with own upgrade.

Again

Expert

 • 

27.5K Messages

@user_728be8​ Make sure you're buying new and not refurbished.

I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.

Was your question answered? Please mark an Accepted Answer!tick
NoNoBadPuppy

Contributor

 • 

357 Messages

2分前

I would highly recommend you do not but a refurbished modem from Amazon. ebay, etc.  The majority of them cannot be activated.  There are many posts about it in these forums.

Visitor

 • 

5 Messages

2分前

Thanks for the tip. I will purchase new. So anyone has recently upgraded, installed, activated your own modem using Xfinity app ?

forum icon

New to the Community?

Start Here