Zebra QLN320 or QLN220 mobile printers WLAN not installed

Hi,

Does anybody know whats the issue here. We have multiple models they're all WIFI models and i know they have the WIFI cards in them but we have a lot of printers that we see with this message in the settings.

-Bluetooth

-802.11 WLAN-not installed

-Ethernet

-Serial

flashing the firmware sometimes resolves the problem but most of the time it does not. we have same issues with QLN320 or Qln220

Qn2-auna0m00-00 that would be a part number from one of them.

Any help would be appreciated.