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.
After updating the firmware, please click "Tools" - "Control" - "PID Calibration" to perform PID calibration.
Then click "Settings" - "Guide" from the display screen, and click "Confirm" after the pop-up window, to enter the user guide.
If the printer displays the following error interface, please update the firmware below, then copy the firmware to a USB drive and insert it into the printer to upgrade the firmware until the printer no longer displays the error interface.
Note: The following error occurs in Kobra 3 Max firmware versions of V2.4.4 and later.