Suunto 2.50.26 – Q4 2025 Release Notes

atoponce

@Dimitrios-Kanellopoulos Thanks for raising this internally. Auto-calibration is disabled, but auto-calibration is a new feature with the release of this firmware. I’ve checked several runs going back to January 2025 when I purchased the watch. This bug has been present since at least that point.

Mi bueri

Hello,

I had the following problem today (similar to 3 months ago):
31% battery in the morning
30% training start trail running: battery mode endurance
19% at training stop after 3:42 h (!6.30h)
Door unlocked, toilet, alarm 9% (16.35h)
1% 16.45h
Battery usage since the last full charge:

Jan 11: 100%, 12.30h
Jan 11: 95%, 3.25 h training (endurance mode) 16.30h
Jan 12: 92%, 10h
Jan 12: 86%, 3h training (endurance mode) 16.30h
Jan 13: 84% 10.15h
Jan 13: 77% 3.5 h training (endurance mode) 17.15h
Jan 14: 74% 11h (no training)
Jan 15: 68% 10h
Jan 15: 60% 3h training (endurance mode) 17h
Jan 16: 50% 10h
Jan 16: 40% 3.5 h training (endurance mode) 17h
Jan 17: 31% 10h
Jan 17: 19% 3.75 h training (endurance mode) 16.30h
Jan 17: 1% 16.45h

Until Jan 15 everything was great, then a 10% drop overnight is not good, and going from 19% to 1% in 15 minutes is unacceptable. I normally charge the watch once a week at about 20%, I bought it in October 2023. I had this jump from 19% or 18% to 1% about 3-4 weeks ago as well, but without any training beforehand.

What is going on? Ideas?

Dimitrios Kanellopoulos

@atoponce auto calibration was there before as well. Back when I was using stryd I vaguely remember this setting. I’ll get back to you guys about this.

Zdeněk Hruška

@Dimitrios-Kanellopoulos thank you very much. I think there are more threads regarding the Stryd not working properly with Suunto in this forum as well as on Reddit for example (especially about pace and distance not coming from the pod). I haven’t used Stryd for a few years. I remember that it worked flawlessly before. There are definitely some issues now. And it seems to be the case that on the treadmill it works as it should while on the gps profiles watch seems to prefer gps data. At least from my experience and testing.
Thanks for all the help!
Edit: Also there was a pairing issue with the new 5.0 Stryd but that one had been sorted out by the Stryd update.

herlas

@Dimitrios-Kanellopoulos toggle for auto calibration was there the whole time as you said, but it did dissappear at least for Stryd when we got the first firmware version that introduced ability to pair multiple sensors of same type.
Then we just got it back on latest 2.50.26 firmware

Squirrel

@Zdeněk-Hruška said in Suunto 2.50.26 – Q4 2025 Release Notes:

Also there was a pairing issue with the new 5.0 Stryd but that one had been sorted out by the Stryd update

Thanks for the info.

@herlas said in Suunto 2.50.26 – Q4 2025 Release Notes:

but it did dissappear at least for Stryd when we got the first firmware version that introduced ability to pair multiple sensors of same type

Right, disappeared due to Q3 2025 update bug.

pilleus

Fazua Evation power meter not connectable any more.

With the firmware before this one it was connected with CSCS protocol but without transferring data. And now there is only the name “Fazua Evation” and nothing else. No connection, just the result of the scan process.

On my Spartan Ultra everything is working, I can choose between speed/cadence (CSCS) and piwer/cadence (CPS).

With firmware 2.44.48 everything was fine with 9PP and Vertical. Afterwards no pleasure and just frustration. ️

It cannot be so difficult to implement the both protocols, because it was working before the change of Suunto’s bluetooth stack to several connectable ble devices.

Maybe the programmer from back then can help. 🧐

borgelkranz

@pilleus the same problem with the Fazua Ride 60. Very frustrating indeed.

maszop

Another software update without fix.
Suunto’s priorities are looking really bad.

https://forum.suunto.com/post/183759

Dimitrios Kanellopoulos

@Zdeněk-Hruška My understanding is when stryd is paired as a footpod via Settings - Connectivity, watch uses Stryd distance. And if the calibration is enabled, Stryd distance coefficient can be calibrated by watch GPS distance.

When stryd is not paired as a footpod, it can be connected via S+ Sports App Stryd, in this case, distance is from watch GPS.

Could you test ? Sorry to ask this like this but sold my stryd. And this is kinda the official info. If that doesn’t work, I’ll prio this, we also have a big issue with stryd 5 afaik so let’s batch those 2 if needed.

Good morning and have a great week.

vietpq

I’m using Suunto Race S with firmware 2.50.26 (Q4 2025) and I’m having serious doubts about sleep tracking accuracy.

Examples:

Night sleep:
I was in bed from 19:11, awake and actively using my phone until ~20:00, but the watch still detected sleep starting at 19:11.
Nap:
I napped from 12:41–13:05, then stayed in bed using my phone until 14:28.
The watch recorded continuous sleep from 12:41–14:28, even though I was clearly awake for over an hour.

It seems the algorithm relies too much on inactivity and lying position, and cannot distinguish between real sleep vs. lying still while awake (phone usage).

As someone who relies on sleep data for training and recovery, this makes the sleep metrics hard to trust.

safari

In my tests, I found that many issues have been fixed.
However, two things have gotten worse.

Sleep tracking: I wake up at 6 AM, walk 3 km in the campsite. The watch was active. Then I came to my tent. My alarm, which I set for 7 AM, went off. I stopped the alarm, and it said “Good morning.” It doesn’t realize I’m awake unless I physically touch the watch. Functions like step counting and location don’t contribute. 2. Increased battery consumption. I think, partly due to the added features, my battery life has dropped to 6 days with daily use.

These are my observations for now.