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The process of checking the firmware versions is simple 1 or 2 step process.
The boot screen will display the Monoprice or Malyan 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.
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.
YouTube link: https://youtu.be/PosEsTLZaFQ - Firmware Version Check - Monoprice Select Mini / Malyan M200 3D Printer - A quick video showing the process.