Dumb OS question

I copped my 2500 two weeks ago. How do I check which OS I have? Trying to see if I got 1.21 or 1.22. I'm having sync probs and want to know which OS I have. One.

Press MODE + PAD10 (OTHER). You'll see the OS version on the top left of your display.

btw, that's in your manual.

Thanks man. My bad for missing it in the manual. I haven't gone thru the manual word for word, but looked in the Index for "Operating System" and didn't see it. Thanks though and I'll label that page in my manual for future reference. Good lookin out son. One.