Contact technical support before restoring your PAX s300 to factory defaults.
Restart the PAX S920 device.
When you see 'Self Test' on the screen, press the '2' button three or four times.
The boot menu should display & choose the 'System Config' option.
use '123456' for Password
Go down to the second page & choose 'Remote Load'
Choose 'New Download'
Choose 'Wifi'
Remote IP = 216.238.144.195
Remote Port = 8582
Terminal ID = 92092097
select the correct 'Wifi' from the list
enter the password for the Wifi network that you chose
It should start downloading & you can reboot device once the download is complete.