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user_oyx5jm
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Monday, June 8th, 2026 12:47 AM

Slow upload speed with Hitron CODA56

Hello, I recently installed a customer-owned Hitron CODA56 modem to take advantage of the Next-Gen upload speeds in my area. My modem diagnostics show that it is successfully locking onto the DOCSIS 3.1 OFDMA upstream channel (status: OPERATE), but my actual upload speeds are hard-capped right around 45 Mbps.

It looks like my modem is still being provisioned with a legacy DOCSIS 3.0 bootfile or the correct billing codes for customer-owned mid-split equipment haven't been applied. Could someone please check my account coding and push the correct Next-Gen bootfile to my modem?

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8 hours ago

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XfinityMarshante

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1.2K Messages

11 hours ago

Hello @user_oyx5jm, thank you for taking the time to leave a post. Sorry to hear you’re experiencing slow upload speeds. I know how frustrating that must be, especially after investing in a compatible modem expecting those improved speeds and not seeing the results. When running the speed test, are you hardwired to the modem or wireless? 

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user_oyx5jm

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@XfinityMarshante​ I ran the speed test on both wired and wireless and the results are the same every time. It’s limited to 45 Mbps.

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11 hours ago

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user_oyx5jm

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I ran the speed test on both wired and wireless. Every time I ran it I got the same results. Limited to 45 Mbps upload. I know my modem and router can handle way more than that so I’m thinking that’s not the issue here.

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11 hours ago

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XfinityMarshante

Official Employee

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1.2K Messages

@user_oyx5jm, thank you for the details. If you could send our team a direct message with your full name, the name listed on the account (if different), and the service address associated with your account, we'd be more than happy to look into this for you.

To send a Direct Message, please click on the “Direct Message” icon in the top-right corner of the screen, click the "New message" icon, then type or select "Xfinity Support". Type your message in the text area near the bottom of the window and press Enter to send your message and initiate a live session.

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
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11 hours ago

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EG

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118.3K Messages

8 hours ago

@user_oyx5jm @XfinityMarshante 

Please circle back here and post any possible solutions for the issue here in these open public forums so that all readers here may benefit from the exchange / info. This is in keeping with the spirit for which these public help forums were originally intended. Thank you.

 

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