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So it turns out that calibrating Direto with the ios app also calibrates it for other apps.
And BTW for the Elite admins, it calibrated fine with the ios app with wheel size set to 700C 25mm (2133) not the 175 that the Windows app kept forcing.

Thanks for the reply. I did warm up for 10 minutes. Oddly, I found that it will calibrate when using bluetooth with my iPhone, but not with Windows and Ant+. I much prefer Windows with a larger screen. I will warm up for 10 minutes and try again on the Windows app. So, if I can calibrate with ios ap...

OK. But when I try to do the calibration with the value at 175, no matter how fast I pedal, it tells me to increase speed. In short, I cannot calibrate. This is with 50/12 and rpm above 120. How can i calibrate the unit?

I have experienced that too. I am using ANT+.

Windows using ANT+ everything works well, but when I try to calibrate I enter 2133 for circumference and enter but the value always remains 175. Of course, that circumference of 175 will not let me calibrate the unit. What am I doing wrong?