To update the Wi-Fi password on a BT router, follow these steps:

1. Connect to the router: Ensure that your computer or mobile device is connected to the BT router either via Ethernet cable or through a Wi-Fi connection.
2. Open a web browser: Launch a web browser on the connected device.
3. Access the router’s configuration page: In the web browser’s address bar, enter the default IP address for BT routers, which is typically “192.168.1.254” or “192.168.0.1”. Press Enter to access the router’s configuration page.
4. Log in to the router: Enter the router’s administrator username and password to log in. If you haven’t changed these credentials before, the default username and password can usually be found on a label on the router itself or in the router’s manual.
5. Navigate to the wireless settings: Once logged in, find the section for wireless settings or Wi-Fi settings. It is often located under “Wireless” or “Advanced Settings.”
6. Change the Wi-Fi password: In the wireless settings, look for the field where the Wi-Fi password is displayed or labeled as “Passphrase” or “Network Key.” Delete the existing password and enter your new desired password. Ensure that the new password meets any criteria or complexity requirements specified.
7. Save the changes: After entering the new password, click on the “Save” or “Apply” button to save the new Wi-Fi password.
8. Reconnect devices: Once the changes are saved, all devices connected to the BT router will be disconnected from the Wi-Fi network. Reconnect your devices to the network using the new Wi-Fi password.
9. Test the new Wi-Fi password: Verify that the new Wi-Fi password is working by connecting a device to the network using the updated credentials.

By following these steps, you can update the Wi-Fi password on a BT router, securing your network with a new password of your choice.