Oracle MICROS Payment Cloud Service Payment Terminals P400 and V400m Check for Software Updates Check for Software Updates Press and hold down the 9 and the green o button. Enter the admin PIN, which is provided by Oracle Suport. Press the green o button. Tap Config on the screen. Press 1. Update.The terminal updates or shows the message Already up to date. To exit, tap OK and then press the red x. Press the red x to exit the Admin menu. Parent topic: P400 and V400m