Hi everyone,
I'd like to share my experience with 955 Solar. Since June, HR readings became unstable and OHR stuck every now and then. With 16.17 it became unusable.
So I got a brand new unit, which carries 13.23 fw version: OHR works seamlessly.
Though I'll miss all the new features of the newer firmwares - e.g. HR graph scrolling - I immediately disabled automatic updates. HR is the main reason I have a unit like this.
That's a pity, but now it works.
Riccardo