Just did a SW update on mine via the Garmin Express app, easy to use. The only issue I have with the Xero so far is that the screen can be a bit hard to read depending on the angle and ambient light.
My self-imposed rule, now that I'm retired, is that if I want another gun, I have to sell one that I already have. I recently bought a Huben K1 in .25 cal and am selling my Taipan Vet Tactical (it's on consignment at New England Airguns if anyone is interested).