2.5Gbps Plan - Arris S33 limitations on upload speeds

Good evening user_ew4ilr we know that many of our subscribers are excited about our Next-Generation speed upgrades, and we do have a way for you to be informed when those are coming to your area. 

Next Gen Construction

I'm also interested in the rollout of nextgen upload speeds for the S33. Getting great download speeds but upload seems to be capped at 40mbps as well. 

@XfinityAlfonso​ got a rough ETA when Bellingham WA will get updated speeds everywhere? Cause the upload end is just suffering 

Hello, @mc89 we can check your account to see if your area has the next generation speeds. Could you please send our team a direct message with your full name and full address? To send a direct message:

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2. Click the "New message" (pencil and paper) icon

3. In the 'To' line, type "Xfinity Support" there. A drop-down list appears. Select "Xfinity Support" from that list (an "Xfinity Support" graphic replaces the "To:" line)

4. Type your message in the text area near the bottom of the window

5. Press Enter to send it. An official employee, such as myself or whoever is first available, will respond. Thanks!

@user_ew4ilr We currently do not have ETAs for when areas will be upgraded and the speeds enhanced.

Same issue i am having. S33 gets actually up to 2300 down but upload stuck at 40. 

I had a MB8011 i figured I’d swap and see a difference. Nope. Exactly the same up to 2300 down but stuck on 40 upload. 

What this says is they are inept or doing it on purpose so you will rent their modems. 

Its not the modem’s fault and I proved that with two different modems. 

Also, when the field tech came out he metered my signal in the house at the modem. He confirm my signal was actually 3000 down and 500 up, so what xfinity does it literally stop your modem from using the signal. Which i don’t mind as long as they stop where I paid for…2000 down 300 up 

For those who want the 300Mbps download speed (on a 2Gbps plan), be aware there are LOTS of reports the S33 won't do the upload speed, only the download.  I speak as one who's directly experienced this, and as a network engineer.  Also as someone who has spent over eight hours with Comcast tech support - who are unaware of the S33 problem.  Even though this was reported on Oct 04, don't expect a Comcast solution.   

Their fix would be to update the bootfile - but they have little incentive to do so - as they want to *rent you their modem*, both for the revenue.  And also to have yet another Xfinity "hotspot" (if you didn't know they do this...).  So - it may be a long time (ever?) before they do the software for the S33.    

It wasn't worth any more of my time, and so I bought an Arris S34 - problem fixed, simple plug-n'-play, just call Comcast first, tell them model  & mac address.  Maybe, keep the S33 as a backup.

I already have two modems because of this from two different vendors Ariis s33 and Motorola MB 8011. Both are tapped at exactly 41 up. Both download 2000+ on a 2000 down plan. My upload is supposed to be 300. Sigh.