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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 to factory default settings. This is not the same thing as 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. When you reset your router, the following will happen.

  • The router's login and password are reset to factory defaults.
  • All WiFi information such as network name, password, and authentication method are erased.
  • Any ISP settings saved in your router will be removed. You may have to contact your ISP.
  • Any firewall settings, parental controls, or port forwards that you have configured will be removed.

A router reset is the last step you should take in recovering your router's password. You should be sure that you have tried to at least recover your router password using our Router Password Finder before resorting to a router reset.

Other Sagemcom Fast 3890v3 Guides

This is the reset router guide for the Sagemcom Fast 3890v3 sw18.76.10.13c-9 (HU) T-Mobile. 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.

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 - 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

You can usually find a small reset button on either the back or the bottom of a router. This is what a typical reset button looks like:

Router Reset Button

Your reset button may look different, but usually they are very small. You may need a paper clip to push the reset button.

Hold the reset button down for about 10 seconds while watching the lights on the front of your router. The lights on the front of the router should do something different when the reset happens. It is harmless to hold the reset button too long.

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

Only take this last step of fully resetting your router after 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

Once the reset is complete, you need to login to your router using the default IP address, username, and password. Our Fast 3890v3 Login Guide has 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: 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 sw18.76.10.13c-9 (HU) T-Mobile. We also have the following guides for the same router: