Perform a factory reset to restore default settings on the device. Perform a factory reset if you have been locked out of access to your device settings.
INSTRUCTIONS & INFO
RESET AT&T WIRELESS INTERNET: Remove the bottom cover of your AT&T Wireless Internet, then press and hold the RESET button for 10 seconds using a pen or paperclip.
RESET USING WIRELESS INTERNET MANAGER: From a device that is connected to the AT&T Wireless Internet network, open the web browser and go to http://att.wirelessinternet. Enter your Admin login, then click Login.
Click Restart under Restart Device. Note: You will be prompted to click Yes to confirm.