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Inaccurate gps tracking after update 12.23 on FR 955

Alexander over 2 years ago

Hi guys!

After update 12.23 gps track has been disappointingly inaccurate.

Before update gps track was incredibly smooth!

What do you think?

Maybe opaque autumn clouds?

On pic below: after update and before.

Top Replies

Garmin-Kevin over 2 years ago +1 verified

All,

After reviewing the information provided (in this thread and via email) by many of you, I am having a difficult time finding examples of when the watch is recording a GPS position outside of the 3…
Garmin-Kevin over 2 years ago in reply to Garmin-Kevin +1 verified

In addition to my comment below, we would like to know if any of you are experiencing the symptoms mentioned in:

Not maintaining GPS Lock in GPS Only mode

If so, please comment on that thread.

Garmin-Kevin…
Garmin-Kevin over 2 years ago +1 verified

All,

We have had various GPS improvements since the 12.23 update. After updating to 13.15 (which is the current beta software), are any of you seeing GPS issues either during your recorded activity or…
5369600 over 2 years ago +3

Then I’m not crazy. I am losing my mind, to understand, as it is possible, that a watch of this kind, does worse, than a watch, much cheaper and with less GPS systems! Today I tried again, with all systems…
StefanHH over 2 years ago in reply to StefanHH +2

Hi Kevin, after updating to 13.21 nothing changes:

Run on 22.11.22 at 19:08 SW:13.21 GPS: Smart; GPS-mode: auto-select, Problem at Minute 1:30-2:00

https://connect.garmin.com/modern/activity/10020434…
5994630 over 1 year ago in reply to th3oretiker_ +2

I suspect we're seeing two different things here.

There is undoubtedly GPS jamming in evidence in the tracks recorded in Moscow. They're accurate until they pass close to certain landmarks, then become…

All Replies

0 Brychu over 1 year ago in reply to DPSK

Hi,
For sure it is not a GPS jamming because my second device Coros Pace 2 (I think the same GPS chipset as 955 - MediaTek/Airoha chipset AG3335M) in "GPS only" mode works and shows workout path on the map perfectly. My 955 since GPS update 2.37 in "GPS only" mode can't find a signal fix (green, red, green, red,...) and when I start an activity the path on the map looks terribly. But in "All systems" mode it works correctly. Before an update 2.37 everything was ok.

0 DPSK over 1 year ago in reply to Brychu

In the other thread, someone said going back to GPS 2.35 fixed the issue.

Try writing to Garmin to release back the GPS 2.35.

0 th3oretiker_ over 1 year ago in reply to Brychu

My "GPS jamming" comment was intended as a response to the first post in this thread, which included a screenshot from Moscow. As someone already said, we may be looking at two different problems here.

0 slugwalker over 1 year ago in reply to Garmin-Kevin

My current Fenix 6 Pro giving me inaccurate GPS. I am keen to get a "non-metallic" F955, thinking it will provide a better GPS accuracy and further with multi-band GNSS. Until I read this thread, it put me on hold on my F955 eagerness.

0 9970217 over 1 year ago in reply to slugwalker

Still no solution. Same issue is also present in the Fenix 7, since the issue seems to be in the GPS software version 2.37 and above.

(+) Inaccurate GPS tracking with latest firmwares. - Public Beta 11.xx - Fenix 7 Family - Public Beta Reports - Garmin Forums

0 5994630 over 1 year ago in reply to 9970217

For comparison, this is my experience in the UK with the current beta. Clear blue skies on a beach with no tall buildings around for 50m in any direction. Absolutely best possible GPS reception conditions, and the track is as flawless as would be expected. Any wobbles are me trying to find the firmest sand or avoiding an obstacle. In places I'm running over my own footprints.

connect.garmin.com/.../10350128097

0 5994630 over 1 year ago in reply to 5994630

Or how about this one? Extremely challenging GPS conditions: rain, a valley bottom, tree cover, and lots of sudden changes of direction. It's even possible to tell which side of a narrow archway I went through on the final lap.

connect.garmin.com/.../10305063481

0 9970217 over 1 year ago in reply to 5994630

The track is usually fine for run activity app.

0 Alexander over 1 year ago

I'm topicstarter. There are no any changes. Track is still absolutely ridiculous. I'm frustrated.

0 5994630 over 1 year ago in reply to Alexander

That's what GPS jamming looks like. Notice how the track is good either side of the big deviation?