Skip to content

How to fix US/DS light blinking error? 

  • by
  • 5 min read

Xfinity covers a lot of ground as a service provider, but the company’s internet offerings are probably the best known. They also provide routers and any additional equipment you might need to set up your home network, so you’re all covered as a customer.

That said, their services aren’t perfect, and all tech equipment does run into some errors from time to time. This article discusses the US/DS light blinking on Xfinity routers, what’s causing it, and how you can fix the issue.

What causes this error?

Generally, US/DS (Upstream/Downstream) lights on a router indicate network activity and connection health. Depending on the router’s manufacturer, solid US/DS lights indicate a healthy connection, longer duration blinks to indicate that the router is trying to connect, and shorter duration blinks indicate a connection issue. 

There are several reasons why this might happen. Some of the most common reasons include the following:

  • Outage on ISP’s end.
  • Cabling issues.
  • The router firmware is outdated. 

Also read: Why is my Xfinity router blinking orange? 6 Fixes

How to fix this?

Here are seven fixes you can try out. Do keep in mind that even if you don’t have an Xfinity connection, these fixes will likely work for you. 

Give the router some time

As mentioned before, blinking US/DS lights often simply indicate that the router is trying to connect to the ISP’s network. Your best bet is to wait for a few minutes to see if the light status changes.

Blinking or flashing lights on a router can also mean it’s undergoing a firmware update. If you restart your router in the middle of a firmware update, that can cause problems and even brick your router due to an improperly installed firmware update. Give it about 30 minutes, give or take and check back again to see if the router has started working. 

Restart the router

If it’s been far too long for the router to be updating or connecting, you should restart your router. Restarting internet devices can fix seemingly random issues that cause connectivity problems, including the Xfinity router blinking orange issue. Just turn off your router (and modem) and wait for a few minutes before turning it back on again. 

Also read: What to do if OpenAI’s API is not available in your country?

Check the cables

The next thing to do is check to see if the splitter, the incoming WAN cable and any other inbound connections to your router are intact. Regular wear and tear can damage the cable carrying WAN signals to your router causing internet issues. 

If you see any damage to any inbound connections, including any cuts and breaks, reach out to your ISP for support and get them to fix the cables. 

Check for outages

Outages from your ISP’s end can also cause blinking lights on your router. Check out the Xfinity service outage page to see if your area is experiencing issues. If you are facing issues, you can contact Xfinity to find out how long it’ll take for services to resume. 

Check for a firmware upgrade

Check to see if there are any new firmware upgrades or updates for your router and if there are, install them right away before trying again. More often than not, router manufacturers will publish frequent updates for their devices that can fix any reoccurring glitches.

Factory reset the router

Most routers have a reset button at the back which will reset the router to its default settings. If you’ve misconfigured some settings on your router or have been impacted by a bug or virus, resetting your router can fix these issues. Do remember that you’ll have to reconfigure the router with the credentials given by your ISP. 

What is the difference between a 2.4 GHz and 5 GHz WiFi Frequencies?
Photo by Misha Feshchak

Contact Xfinity support

Finally, if nothing else works, you’re going to have to reach out to Xfinity support and have them either assist you remotely or send a technician over to your house to diagnose and fix the problem. There’s a good chance that the issue actually persists in your router and a replacement from the ISP would be able to fix the problem. 

Also read: How to fix XRE 03059 Xfinity error?

Yadullah Abidi

Yadullah Abidi

Yadullah is a Computer Science graduate who writes/edits/shoots/codes all things cybersecurity, gaming, and tech hardware. When he's not, he streams himself racing virtual cars. He's been writing and reporting on tech and cybersecurity with websites like Candid.Technology and MakeUseOf since 2018. You can contact him here: