Symptoms:

Dejavoo QD terminal says Upgrade app and asks you to Enter TPN

Resolution

1. Press the Circle Button
2. Enter System Pin 336686
3. Click on Market
4. Tap on DvPay Lite from left side of screen
5. Tap on Uninstall from the bottom of the screen
6. Yes to confirm
7. Once done hit circle button to go to main screen
8. Enter the Aura App