3 Messages

Saturday, July 25th, 2026 4:12 PM

MT8733 upstream stuck at ~6 Mbps, same as an old thread

I'm hitting the exact same problem as this thread: https://forums.xfinity.com/conversations/your-home-network/upstream-only-6mbps-with-motorola-mt8733-provisioning-problems-12gig-service-plan/6620501312df8b16cf69f155

Motorola MT8733, plan 1000/100. Download is fine (~650 Mbps), but upload is stuck at ~6 Mbps.

Already ruled out the usual stuff: signal is clean (upstream 42–44 dBmV, 0 uncorrectable), tested wired directly to the modem (not Wi-Fi), line already fixed by a tech, and I've power-cycled several times. My event log also shows "UCD invalid or channel unusable."

Same as that thread, how should I handle this? 

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Official Employee

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328 Messages

7 hours ago

Hi there. Thank you so much for reaching out.  I'll be happy to assist.  Can you confirm when did this issue first begin?

3 Messages

@XfinityDemetrise​ It's been like this since installation. I just didn't pay attention to upload speed until recently.

Official Employee

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328 Messages

Sounds like I may need to take a closer look at your account.  Please report back to direct message for further assistance. 

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Expert

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119.5K Messages

7 hours ago

@XfinityDemetrise @user_x7kjgj 

Be advised that sending an unrequested direct message to the support team is a violation of their forum guidelines. It may get ignored.


Please see this post about direct messaging the support team;


https://forums.xfinity.com/conversations/getting-started/direct-message/6445fb0eb9339b2013e8ff9c?commentId=6446bf50b9339b2013e93478   

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