Question: how can i change the password of my jiofi?
Answer: Switch on your JioFi device. ... 
Connect your phone or a laptop to the JioFi device.
Access the configuration interface on a web browser.
Login to the interface.
Change the WiFi password.
Choose a password and save Settings.
Changing the JioFi's network name (SSID)
Changing the JioFi's login ID and password.