I was able to find a some steps that will help you change your password and name on your Jetpack:
1. Confirm the device is powered on
2. Remove the back cover
3. Insert a paper clip into the Maser Reset Button hole
4. Press and hold the button for about 5-10 seconds
5. Wait for the Jetpack to reboot
- I hope this helps! - StephannieP_VZW