Tides help - digital hash is all Im hearing

I got a Tides and really ive just fired it up. I used my friends extensively but Im scatching my head here - with just the uni and bi outs to my mixer and an LFO into level - middle led flashing between green and red, bottom led solid red. Im justing hearing rubbish. I havent gotten a VCO sound out of it yet.
I put sheep on it and didnt have much luck with that either. Re-installed regular Tides firmware and still the same behavior. Its killing me. My mates gone OS so I cant ask her. So i havent gotten Tides to sound at all like Tides…

Recalibrate.

Perfect - works a charm! I was going to calibrate it but I thought it was firmware related.