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Firmware 12.70 - Still navigation issues

Hi,

I'm using the Edge820 with firmware 12.70, but still have severe issues with navigation:

1st: it takes ages until the course calculation is finished
2nd: when calculation is finished and navigation is on, there is tremendous lag until map data is displayed
1. (without navigation, the GPS-fix is found quickly and map is displayed correctly)
3rd: due to this lag, no navigation commands for turns, etc. is given and the off-route note takes several 100ms to be issued.

Thus, I'd had to go back to display the track always and follow it without navigation, which is quite annoying as then no upcoming elevation data is displayed on the elevation page, too.

I tried quite a lot of different settings, but nothing is working well.

BTW, track data is always reduced to a max. of 500 points.

Anybody else still having navigation issues with 12.70?

Any tips are very welcome.

Many thanks

Harry

0 milkovol over 3 years ago

Same here!

0 looigi over 3 years ago

IDK. If you have a lot of stuff on it, try deleting history that's already been uploaded and courses you no longer use. If that alone doesn't work, do a factory reset.

0 HarryG over 3 years ago in reply to looigi

Hi,

Thanks for the hints. Already tried both a few times, but it did not resolve the issues.

Currently, I have only one ride and two navigation tracks on the Edge after full factory reset.

I fear, I have to go back to an 11.xx firmware

Harry

0 looigi over 3 years ago in reply to HarryG

I went back to 11.2 quite awhile ago. It's worked the best for how I use the 820.

0 HarryG over 3 years ago in reply to looigi

Yes, I remember that one also to be the last with smooth navigation.

I'll have to check, if I need any of the changes between 11.20 and 12.70.

0 milkovol over 3 years ago in reply to looigi

And how do you do it?..

0 HarryG over 3 years ago in reply to milkovol

Check the changelogs, quite cumbersome, but ....

https://forums.garmin.com/sports-fitness/cycling/f/edge-820/238455/new-edge-820-version-12-70-now-available

https://www8.garmin.com/support/download_details.jsp?id=10356

http://gpsinformation.net/allory/garfeat3.htm#Edge820

Some of the old firmwares can be found via websearch

0 milkovol over 3 years ago in reply to HarryG

Thanx...

0 HarryG over 3 years ago in reply to milkovol

Today I did a ride with firmware 12.10. Still had the same issues.

In the next days I'll try one more with v11.20, but then will probably loose my ConnectIQ fields :-(

After reading a lot in the forum, the problem could be the turn-by-turn feature. Turning it off, give's you immediate track following and off-route messages, but no advance navigation hints.

Thus, my impression is, that the issue is due to the map data and probably not the firmware.

would be happy, if anyone could confirm this.

Thanks, Harry

0 HarryG over 3 years ago in reply to HarryG

Hi, I could resolve some issues.

Everything seems to be related to the turn by turn calculation, especially when you start in a city, e.g. calculation of a 40km ride took between 8 and 16 min by starting from my home place. When I changed the starting spot to a few km outside the city, the calculation time was between 12 and 25 seconds!!!

Unfortunately, the problem on navigation hints remained: the first turns worked, but then it got stuck and never updated my position on the map display again. This was the same with all tested firmwares: 12.70, 12.10, 11.20.

So currently, I'll ride with turn-by-turn set to off. Then, the off-course warning works at least.

best wishes

Harry