I just recently bought the s33 modem in hopes to lower my bill but now I’m not getting the upload speed I was getting with the xfinity modem. I talked to comcast and the tech support couldn’t figure out the reasoning behind it. I feel like it could just be the firmware on the modem not updating properly but the tech didn’t know how to update it himself
Best answer by plemans
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+40
Xfinity had/has higher uploads on the xfi equipment. That requirement has been lifted but you have to have a midsplit/highsplit modem. They’ve currently only approved 4x modems for 3rd party increases in speed for the upload.
Not sure if the S33 is going to be included in it or not as xfinity hasn’t said yet.
https://www.reddit.com/r/Comcast_Xfinity/wiki/knowledgebase/next-generation-internet/
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