New to me 2200.50 Planet Ocean

New to me 2200.50 Planet Ocean with new Omega rubber Planet Ocean strap + OEM bracelet. It's not perfect but I didn't pay a perfection price. Very happy with it. Because it was serviced in 2024 I was wondering about whether the 2500 movement was upgraded to version B or C. From my research it appears the A version beat at 28,800bph. It does not appear to be beating at that rate. The app reading bph says it's beating at 25,200 so my guess it was updated to the C version. I opened the back but don't have the expertise to know if you can see if the movement was upgraded during the 2024 servicing.

Thanks