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The process of checking the firmware versions is a simple 1 or 2 step process.
The boot screen will display the Monoprice logo and two numbers that are separated by a period or full stop.
These numbers represent the Motion Controller and UI Controller(LCD) firmware versions.
While the printer is connected to WiFi you may use a web browsers address/URL bar to send a command that will display the firmware version numbers on the printers LCD. Using the on-board controls will clear the version numbers from the display. In rare cases you may have to turn the printer off and on to clear the display.
In the pictures below the first number “40” is referring to the Motion Controller and the second number “113.2” refers to the UI/LCD Controller version.
In the picture below the first number “22” is referring to the Motion Controller and the second number “41” refers to the UI/LCD Controller version.