re.rockspace.local: How do I reset my Rockspace WiFi extender?

Changing the local password for a re.rockspace.local interface is a prominent method to secure your range extender. A user has to assign a unique login password to prevent unauthorized entry into its web interface. You can change the password either through a mobile device using the Tether app or may do it through a computer using the re.rockspace.local interface. A user has to make sure he has downloaded the Tether app to remotely control the range extender.