UPT shows "E03 - Plug" error message on the screen. JuiceBox may be rebooting or JuiceBox on beta system may be busy checking FDMS OTA database. Related articles How do I set the APN? UPT is blacklisted by JuiceNet. Can I charge EV from JuiceBox while the UPT cellular service problems are being fixed? JuiceBox Configuration UPT shows “E09 - Failed to get end point. Check the network and the APN” error message on the screen.