How do I update firmware on a Zebra Printer?
You can use packages to send firmware updates to Zebra printers. Create a package in MobiControl Package Studio containing the firmware update. The firmware should be set to install in the \temp\ directory. Leave the Automatically Execute option unchecked since it doesn't affect printers.
Upload the package to MobiControl and use a profile to deploy it to your printers.
It sounds like you just answered your own question. Does this require a LinkOS printer?