Thread: About 37xx converted to 34xx satellites reception accuracy

Originally Posted by lolypop000

I again turn off and back on nuvi and go to satellite page and after 10 sec i have 3-5m accuracy

Followed your procedure
I had a good accuracy in sat page and this hasnt changed, but when I start nuvi even after clearing non vol I get satellites in a while Nice!
Thanks

As soon as I start Nuvi now it has already got satellites:satellites bars are already green when I get main page, no need to wait to start navigation and in few seconds accuracy in sat page is good. (5 mts) on my terrace.
I get 8 mts from my desk, inside, 4 mts from the window.

Do you have this like Caty when you turn on nuvi?

As soon as I start Nuvi now it has already got satellites:satellites bars are already green when I get main page

If you don't have then you do something wrong.

Maybe Caty can write step by step what she do

p.s.
What accuracy did you had outside before you convert 37xx to 34xx?

Originally Posted by lolypop000

Do you have this like Caty when you turn on nuvi?



If you don't have then you do something wrong.

Yes, after i check i don't turn off but go back by arrow. I try like Caty write

Maybe Caty can write step by step what she do

p.s.
What accuracy did you had outside before you convert 37xx to 34xx?

After i check i don't turn off from that page but ruturn back by arrow or go TO test page and erase all setellites with single test. On morning i try Caty's procedure

For me there is not differents. like Caty, when nuvi start there are already satellites but the accuracy for me is the same. Outside after 1 - 2 minutes is now 15 -18 satellites

!!!!in open space my nuvi has accurancy of 5 - 6 metrers now!!!

I followed your procedure:
I started Nuvi ,pressed sat bars icon to get Satellites page, once I got the best accuracy I pressed Heigh , in this new page I checked Predicted EPH and cold start.
From this page I shut down my Nuvi off holding off button.
I restarted Nuvi and after restart as soon as I reached main Nuvi page satellites bars were immediatly green.

Getting Satellites signal now is immediate even indoor, may be I get bad satellite accuracy,for example from my living room sofa I get 50 mts,but I get it. This never happened before.

I cant say if it changed my Nuvi sat accuracy, but It changed the speed and satellites signal reception for sure.

It is sound like using a GPS Chipset Type M HotFix Data software on Nuvi 2x5 and 7x5. But Garmin is not predictable as usually. Why Garmin do not activate Predicted EPH by default!?

Originally Posted by Giomen

.......... Why Garmin do not activate Predicted EPH by default!?

I think it seems like they do on factory-default 34/35xx. It maybe is to do with changes caused by conversion 37>34xx? I have an interesting situation with my 3490 convert showing similar accuracy to my 3590. But the 3590 was bought by me as 'partly-bricked' and although technically 2nd-hand it was brand-new. It had been mucked around with by someone and they mustn't have been game to take it to Garmin under warranty. It had a lot of corrupted files with weird names which wouldn't delete so i re-formatted to start again. Then I found fw problems so used cure3 and it worked fine. But i never got to see if it's original accuracy was 3-4 metres like an original factory 'out-of-the-box' 3490. Instead, it's as i reported in the side-by-side with the 37>3490 in [Only registered and activated users can see links. ], both were generally 4-8m. Sometimes they get 3m or even 10m, but i've never had 15-20m reported by some. I'll do Loly's reset on both the 3490 convert and the 3590 then re-test and report when i have time.

Loly's Procedure works to improve accuracy on real 3490 too.
Maybe we should make it something to do once a month. !
Inside my house previously 8 Meters now 4 meters.