These are Dejavoo P Series Partial Download Instructions: (P1, P3, & P5) that are required if any changes are made to the Dejavoo Account settings.
From the Dejavoo Device, go to the Sale Screen
Tap the Gold Star in the middle-bottom of the screen
Tap Upgrade App -or- press the 2 Number Key
The TPN and prompt for a password will display.
Enter the last 4 digits of the TPN as the password.
Select Download Parameter
A message will display "Your encryption keys are downloading, please wait”
After 60 seconds of waiting, Reboot the Terminal using the power button on the side.