Learn about factory resetting a FRITZ!Box 7490.

Before you start: Resetting your modem to its factory settings will remove any changes that you have made. This means that you will need to reapply these adjustments once the modem has been reset. 

Method 1: Modem Interface

1. Connect to your Wi-Fi network or connect your device to your modem over ethernet.

2. Open your web browser (Internet Explorer, Google Chrome, Mozilla Firefox or Safari) and type in the address bar 192.168.178.1, then press 'Enter' on your keyboard.

3. A box will then ask for a Username and Password. The username is normally created by you when you originally login to this page, otherwise try admin for the username and admin for the password.

4. Click 'System' from the left hand selection and choose 'Backup' from the options below.

5. Click 'Factory Settings' and then push the 'Loading the Factory Settings' button at the bottom. This will factory reset your modem.

Method 2: Calling Reset

1. Plug a phone device into either 'FON 1' or 'FON 2' ports of your modem. 

2. Dial the following numbers '#991*15901590*'. 

3. Wait for up to 30 seconds and your modem will begin to reset to its factory settings.