I get this now with my MN:
Warning: Your masternode version (120100) is behind the official version (120102). This is from DASHcentral.
I am running 12.1 so do I need to upgrade again. I just updated last week...??
and go through the update procedure and reset my time and loose rewards etc.
If you're running a linux box, install the dashman utility.
https://github.com/moocowmoo/dashmanIt's soooo easy for us "lazy" masternode owners that I don't know why I wasn't using it before 12.1. Right Icey??? Proof of ping LOL.