Zebra: Updating Firmware
The following article describes upgrading the firmware for Zebra printers.
Download the latest firmware file for your printer from Zebra's website. The download will be a .zip file, extract it to find the firmware file (.zpl).
Network Methods
These methods are recommended over USB for reliability
Using cURL (cross-platform)
Use curl to send the firmware file directly to the printer:
curl -T <path_to_firmware_file> ftp://<printer_ip_address>