Can you connect a LAN cable as a temporary connection to allow connection to the panel? You will need to be sure to remove the Wi-Fi module to allow the LAN cable to function. Then check the info page in the system settings to confirm the firmware version. We have improved the Wi-Fi AP scan and set up in firmware 4.52.
For reference, the error “Operation failed 11009 MISSING” is an indication it failed to see SSIDs during its scan for Wi-Fi networks. We will improve that error message.
If you have questions regarding updating the firmware, I am happy to provide some instructions.