Supervision screen....booting up and asking for a flash drive ??

Just bought a 2012 launch 22v. Everything worked great Friday, it got soaked Saturday in a storm, had it cleaned yeasterday, got in it today to program riders and get it set up for the lake this weekend, and when I turn the key forward, the screen stays black, says booting, at top, then shows a usb and flash drive, and gives me some numbers at the bottom.
I assume it's asking for an update, or can't read the software, what so I do? Can I reset it or bipass this screen or am I doing something wrong ?

I’m having this problem too. Did you find a solution?