Please follow the instruction below to bind the printer before upgrading the firmware.
Note: The printer cannot update the firmware in the LAN mode. Please turn off the LAN mode first and then bind the printer.
Kobra 3 Max- Printer Binding Guide
Please click "Device Informations" - "Printer Information"
(1)If there is an upgrade arrow after the firmware version, it means that the firmware needs to be updated.
(2)After the update, please restart the device manually.