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Reset the Sagemcom Fast 3890v3

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Setup Router Staff
Last Updated: | Reading Time: 5 minutes

This guide shows you how to reset your Sagemcom Fast 3890v3 router. A router reset is very different than a router reboot. Every time your router loses power it reboots. However, when you reset a router you, return it back to its factory default settings.

Warning: This is not a step to be taken lightly. The following settings will be changed in your router:

  • The router's username and password are reset to factory defaults.
  • All WiFi information such as network name, password, and authentication method are erased.
  • Your ISP settings are reset, which means you will have to contact your ISP to get them back.
  • Any port forwards, firewall settings, or parental controls that you have configured will be removed.

A router reset is the last step you should take in recovering your router's password. Make sure that you have tried to recover your router password using our Router Password Finder first.

Other Sagemcom Fast 3890v3 Guides

Use a VPN Instead

Have you considered using a VPN instead of forwarding a port? For most users, a VPN is a much simpler and more secure choice than forwarding a port.

We use and recommend NordVPN because not only is it the fastest VPN, it includes a new feature called Meshnet that makes forwarding a port no longer necessary for most applications. With NordVPN Meshnet, you can connect to your devices from anywhere in the world, completely secure, over a highly encrypted VPN tunnel.

When shopping for a VPN, make sure that they meet the following criteria:

  • Your VPN provider should have a no-logs policy. This means that they do not keep any logs of any kind.
  • Make sure that your VPN provider has lots of exit nodes all around the world.
  • Check that your VPN will not affect your speed.
  • Verify that your VPN provider uses WireGuard as the underlying protocol.
  • Many people prefer a VPN provider that is not based in the United States.

This is the list of requirements that we used when we were shopping around for a VPN provider. There are lots of free, shady VPN providers out there that we looked at and dismissed.

Based in Panama, using diskless servers, and with over 6,100 servers in 61 countries, we can safely say that NordVPN satisfies all of these requirements.

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Once you've set up your NordVPN account on multiple computers and enabled Meshnet, you can seamlessly access all of your devices as if they were on the same network. You don't even have to log in to your router. It's very simple.

Every time you click on one of our affiliate links, such as NordVPN, we get a little kickback for introducing you to the service. Think of us as your VPN wingman.

This is the reset router guide for the Sagemcom Fast 3890v3 sw05.76.9.7v-6. We also have the following guides for the same router:

Recover Password in Sagemcom Fast 3890v3

If you are resetting your router because you forgot your router password, then you should try running our Router Password Finder first.

Our Router Password Finder can recover your lost or forgotten router password without doing a full router reset, which can save you lots of time.

Router Password Finder - Recover Lost or Forgotten Router Passwords

Do not do a full router reset until after you have tried every other option to log in to your router.

Reset the Sagemcom Fast 3890v3

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On most routers you can find a small button on the back or the bottom labeled reset. Look at your router and try to find something that looks like this:

Router Reset Button

Yours may look slightly different, but they are usually tiny. Sometimes the button is under a pinhole, and you need a paper clip to push it.

Watch the front panel lights while you hold the reset button down for at least 10 seconds. You should notice that the blinking pattern of the lights on the front of the router changes after a few seconds. You can hold the button down as long as you like, it will not hurt anything.

Remember, this will totally reset your Sagemcom Fast 3890v3 router.

Only do this once you have exhausted all other troubleshooting options, such as running our Router Password Finder software, which can recover a lost router password for you.

Login to the Sagemcom Fast 3890v3

After you are finished resetting your router, you need to login in using the original factory username and password. Just follow our Fast 3890v3 Login Guide to find all of the information that you need.

Change Your Password

After logging in to your router for the first time, you need to change your router's password. Leaving a router password set to default is a very serious security risk. Our Choosing a Strong Password guide can help you pick a strong password for your router.

Tip: Write your new password down on a post-it note and stick it to the bottom of your router.

Other Sagemcom Fast 3890v3 Guides

This isn't our only Sagemcom Fast 3890v3 guide. We also have the following guides for this router.

This is the reset router guide for the Sagemcom Fast 3890v3 sw05.76.9.7v-6. We also have the following guides for the same router: