Instinct - 9.20 Beta Release Candidate

My watch says 8.70. But if it is already released I'll wait until it updates automatically. Thanks!

You can enter in configuration/system/updates and launch beta instalation manually after transfer it to the watch.

I was trying that too, but it still doesn’t offer me to install it. I had ‘auto install’ option turned on, so I tried to turned it off, but it didn’t help.

I agree!

• Thanks for the update!! True north compass mode it’s better now!

• Just one more thing(hehehe), the storm alert rarely that's right, and the abnormal heart rate alert stop working after the 8.70 update. Thank you. Att p.duque

Even though I cannot be sure, I think that the storm alert is triggered be a perceived change on the barometric pressure (at sea level), not by a measured change in the local pressure being measured by the sensor. Given that the extrapolation from the sensor measured pressure to the sea-level barometric pressure involves some arithmetic involving the altitude and temperature, it seems that a sudden change in temperature may trigger this alert even if the measure pressure is stable, because the extrapolation for sea level will suddenly result in a different value. If I am correct and this is in fact how things are being done, I wonder why the local measured pressure is not used instead.

But then again, I may be wrong on my notion of how the thing is implemented. Maybe someone here knows for a fact how the thing is being done.

PMO said:

Maybe someone here knows for a fact how the thing is being done.

Not that I know the exact algorithm, but do not expect the storm alert to ever work reliably. Whether it is recalculated to the sea level pressure or not, is actually unimportant. It simply looks for pressure change patterns. However, already with a static high quality calibrated barometer, it is difficult and unreliable to make the storm forecast, but at the watch there are many more variables that make the task practically impossible, so it will always stay just a gadget (unless they start to use warning from true weather stations, but in that case you would need a phone with a working data connection, making it so uninteresting).

The variables I am speaking about are:

• Unlike at static weather stations, the pressure changes also with altitude as you move. Unless the GPS is permanently on, and calibrating the altimeter continuously, the watch cannot really distinguish between a pressure drop due to an approaching storm, or due to a descent (lower elevation).
• The pressure may change also inside buildings, or in vehicels, for example due the air conditioning
• The thermometer on the watch does not measure outside temperature, but a mixture of your body temperature, its own temperature, and the ambient temperature (may be indoors). Hence the thermometer cannot be used for making any corrective calculations
• The pressure sensor on a watch will never be as reliable as the one of a static weather station - it suffers from wind gusts, or from air flow during fast rides or arm motions, as well as it (especially on Instinct) easily clogs with dirt, dust, and sweat. And of course, if you immerse the watch under watter during washing or swiming, expect wild pressure changes as the water enters the pressure sensor hole, and then as it evaporates.

So while some of the problems can be perhaps mitigated to certain extent with some inteligent filtering of impossibly fast pressure changes, or other atypical patterns, I am afraid it will work with some acceptable accuracy only under ideal conditions. Personally, I turned it off, since it was feeding me daily with false alarms, and did not warn when needed, anyway. And I do not believe it can get any better.

Hi,

When the final 9.2 will be rolled out in Europe please?

Thanks.