там же есть по ссылке:
Turn the Power Switch <ON>, and press the <MENU> button to display the menu. Turn the Main Dial and the Quick Control Dial, and you will see the "Firmware Ver.X.X.X" at the end of the settings shown in yellow, which is the currently installed firmware version number.
Note: Select <P> mode (or one of the other creative modes). The version of the firmware will not appear in the basic modes.
Иными словами заливаем прошивку на флешку, включаем аппарат, переходим в меню по пунктам.
