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finkr41080
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Wednesday, January 28th, 2026 5:16 AM

Cannot split bands

I am trying to set up my new Xfinity wifi - I have a Gateway XB8. I have MANY home devices that need a 2.4 ghz band. I've been looking online for > 1 hour for how to do this, but nothing works. The admin webpage (10.0.01) says I need to go to the app, so this webpage seems disabled at least for new gateways. On the app, I go to "wifi equipment" then "advanced settings" as directed on other websites, but there is no option to split the bands (as some websites say). When I go to "WiFi details" then "Edit Wifi Settings" there is no option to split the bands to 2.4, 5, and 6 - as other websites say. I think I need to specifically have a 2.4 ghz band for the MANY devices (plugs, lights, fans, etc...) that require it. Can anyone help? I'm at a loss. 

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EG

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115.7K Messages

2 days ago

They recently updated the gateway's firmware. You have to turn on admin access in the app now;


https://www.xfinity.com/support/articles/admin-tool-access It needs to have firmware version 5.62


Open the Xfinity App. (You'll need a working connection for this step).

Go to the WiFi tab.

Select View WiFi equipment and open Advanced Settings.

Select Admin Tool online access.

Slide the toggle button to Allow Admin Tool access (ON).

Select Save.

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finkr41080

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Thank you for the response. I was able to log into the Admin page and see more details, but it's still not obvious to me how to split the bands. On the admin page I go to "Gateway --> Connection --> Wifi --> Edit 2.4 ghz" but I cannot change anything there, it says to go to the App. But there is no obvious option to do that either on the App. When I go to "edit wifi settings" is just shows the option to "edit the name, password, and security mode." No option to "split bands, not recommended." Many websites and forums say to choose this option, but it does not exist on the Xfinity app. 

Additionally, you mention it needs "firmware 5.62" In the App is says this Gateway firmware is "CGM4981COM_8.2p7s1_PROD_sey" but no option for any time of editing or downloading or upgrades. 

Any other thoughts? 

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2 days ago

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finkr41080

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Just got off the phone with the Tech people. They said it is not possible to split the bands, just FYI. So, I'm giving up. 

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2 days ago

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EG

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115.7K Messages

2 days ago

5.62 is the app's firmware version, not the gateway's.

See if anything here still works;

https://www.xfinity.com/support/articles/change-wifi-mode-admin-tool-xfinity-xfi 
 

https://www.xfinity.com/support/articles/xfi-advanced-settings 

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XfinityChelseaB

Official Employee

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2.1K Messages

6 hours ago

Hello @finkr41080, Thanks so much for taking a moment out of your day to leave a post on our community forum and we would be happy to help. If you use a rented modem from us you would do the following:

Xfinity App > Wi-Fi Tab > Wi-Fi Details > Edit Wi-Fi Settings > Scroll Down to Split Bands (Not Recommended)

Let us know if that helps! 

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finkr41080

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6 hours ago

Hello. I don’t see a way I can add a screenshot here, but that option does not exist in the app. The only option is for name, password, and security mode. There is no option as (and other websites) have described. 

any other thoughts are welcome. 

thanks 

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