what does it mean to flash an electronic board for a paintball gun?

im looking to buy an azodin blitz and i read that i should flash the board to make it better. What exactly does it mean to flash a board and why should i do it.
Something about sending it to the company and having them do it?
idk what it all means

“Flashing” is altering the programs used to operate your marker via a direct connection to a computer. There are a few other ways, but this is the most common anymore. You can change all kinds of settings, and its much easier than trying to navigate menus via a LCD screen.

Create a High Score Board in Flash (Flash Game with Actionscript 2.0 – part17)

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