Application Update Troubleshooting on Shift4 Duo
Uninstall the Old Shift4 Application Version
In order to access the settings menu of the Shift4 Duo, the terminal must not currently have the Shift4 application open. Reboot the Shift4 Duo terminal if the application is open, as the application’s interface prevents navigating away from it.
- Swipe down from the top of the screen and select the gear icon to enter the settings menu.
- If prompted, enter 9876 in the password field. If this password is unsuccessful, newer models may use the password pax9876@@.
- Select the green checkmark, then touch OK.
- Scroll down and tap Apps.
- Find the Shift4 application and tap it to select it.
- Touch Uninstall and then OK to remove the application from the Shift4 Duo.
Clear Data From the PAXSTORE Application
Clear data on the PAXSTORE application to successfully re-communicate with the PAXSTORE site.
- From the Apps menu, select PAXSTORE.
- Touch Storage (directly under the Uninstall button).
- Select CLEAR DATA, then OK to delete the app’s data.
Log in to the PAXSTORE Application to Resync
After data is cleared from the PAXSTORE application, it will need to re-sync with the PAXSTORE site to accept the new applications being pushed.
- Make sure there is a WiFi connection.
- Navigate to the home screen by pressing the house icon on the Shift4 Duo.
- Touch the PAXSTORE application. If the green bar loads, it is successfully connecting to the site.
- The Shift4 Duo will chime as it receives the parameters from the PAXSTORE site.
- Confirm the correct version of the Shift4 application is downloading by touching the Shift4 line. Within the PAXSTORE, the version number will be listed on the page that loads.
- Touch the house icon to return to the home screen.
- Confirm that the Shift4 icon appears on the home screen.