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Reset the Sagemcom Fast 3890v3

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

This is the reset guide for the Sagemcom Fast 3890v3 router. Resetting a router is different than rebooting a router. Unplugging a router from the wall reboots it. A Router Reset completely erases the router and returns it to factory settings.

Warning: Proceed with caution; resetting your router can be a major headache. The following settings in your router will be changed:

  • The router's username and password are reset.
  • Your WiFi login, password, and network name are reset.
  • Your ISP username and password will be reset, and you may have to contact your ISP.
  • Any firewall settings, parental controls, and port forwards that you have configured will be removed.

Since a router reset is such a drastic step, it should only be done as a last resort when you cannot recover your router's password using any other methods. Before you reset your router, you may want to try recovering your router password with our Router Password Finder.

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.

NordVPN is the fastest VPN!

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 sw18.76.11.15z-5. We also have the following guides for the same router:

Recover Password in Sagemcom Fast 3890v3

If the only reason that you are resetting your router is because you forgot your router password, then you may want to try running our Router Password Finder instead of resetting your router.

Router Password Finder can save you a ton of time by recovering your lost or forgotten router password instead of doing a full router reset.

Router Password Finder - Lost or Forgotten Router Password Recovery Tool

A router reset should be the last thing you try if you are unable to login.

Reset the Sagemcom Fast 3890v3

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NordVPN faster than ever deal!

You might notice that most of our site doesn't have ads on it. This is because we use partnerships with companies like NordVPN to keep the site running. Thank you for supporting us by using our referral links.

On most routers you can find a small button on the back or the bottom labeled reset. A typical reset button looks like this:

Router Reset Button

Even though yours may look slightly different, you need to look for a tiny button. If you find a pinhole on the back of the router then that may be the reset button. You will need a paper clip to push it.

Watch the lights on the front of your router and hold the reset button down for about 10 seconds. You should notice that the blinking pattern of the lights on the front of the router changes after a few seconds. Do not worry about holding the button down too long; this is harmless.

Just don't forget that this will totally reset your Sagemcom Fast 3890v3 router.

This last step should only be taken if you have tried everything else, such as using our Router Password Finder software, which can recover lost or forgotten router passwords.

Login to the Sagemcom Fast 3890v3

Once the reset is complete, you need to login to your router using the default IP address, 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. It's a very bad idea to leave your router's password set to the factory default. Our Choosing a Strong Password guide talks about choosing a strong password for your router.

Tip: A great place to write your new password down is on a piece of paper taped 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 sw18.76.11.15z-5. We also have the following guides for the same router: