for flash back i've used Caty's procedure and files, firmware 4.5 for 37xx
in GPS folder i've always and only 3 files, any folders
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for flash back i've used Caty's procedure and files, firmware 4.5 for 37xx
in GPS folder i've always and only 3 files, any folders
X-trail, its very good considerations, I agree with the approach. As you, I also had already placed in doubt the question of the value of the "accuracy" shown on screen gps. Despite being favorable to the method of dynamic measurement, what actually makes sense when it comes to road gps, contradictorily I did static measurements in order to verify the position indicated in relation to the real position. It turns out that the real position is difficult to measure, and even maps or Google Earth are not good references for accuracy. So I decided to take measurements over a official geodesic landmark, what has scientifically calculated coordinates and altitude.Quote:
Originally Posted by x-trail [Only registered and activated users can see links. Click Here To Register...]
To make more reliable the comparative test, would be necessary to have the values of measurements corrected (deviations in the troposphere, ionosphere ..) in post processing stages on some server on line of high level, but to do so would have to have the raw values collected before being processed by the gps, and transformed in the standard RINEX format in order to be post-processed. For this would have to make new measurements with the GPS connected to a notebook and program that would collect these data before they are processed by the gps. Sounds crazy, but it's a game very stimulating, I'm learning a lot, and maybe in the end, could at least respond safely the question of accuracy btw the values displayed on the screens of the original and converted 3790, among many other issues that do not fit comment here ..
But I'm slowly walking in these steps, but if anyone has any information on how to extract the data collected from satellite before being processed by the Nuvis / Etrex / Oregons, please let me know. It may be that the .bin format is raw data (gpx is processed), but it is a mere supposition. I have still researching it.
Despite my exaggerated pretensions about accuracy, which go far beyond the needs of the topic, there is no denying that yours proposal of compare tracklogs of the original and modified 3790, with measurements side by side, are ideal for the purpose of comparing the precision "real" BETWEEN the two firmwares. At the first opportunity, I will make that comparison.
Rfb, I also noticed the problem of the image scan (flicker). It can be associated with different graphic driver of new firmware. I'll look more attention to this fact in the next comparison. On the other hand the3790 modified was with a protective film screen of low quality. At the next opportunity I will remove it ...Quote:
Originally Posted by rfb [Only registered and activated users can see links. Click Here To Register...]
It's actually very east to check Static GPS Accuracy VS Map and Stability.
Set the unit Navigation to OFF Road (This will switch off Snap to Road) Switch to Norh Up and Switch off 3D Terrain
Walk to an intersection and Zoom + to Max.
Try this at Various Locations.
Of Course if the Map is wrong, then the test is meaningless but it will give you a good indication.
I've tried on 3490 and it's usually spot on, If I cross the road I can see it on the GPS Screen
Guys,
My unit:
Serial number: 1W70xxxxx
Unit Id: 380xxxxxxx
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@rfb
Do you try tutorial from giuseppe66 for better accuracy?
Do you have now better accuracy?
Hi,Quote:
Originally Posted by x-trail [Only registered and activated users can see links. Click Here To Register...]
I agree with you almost everything, but the real problem is not stationary.
The most problem is during walking/driving/moving with the GPS.
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Hi,Quote:
Originally Posted by lolypop000 [Only registered and activated users can see links. Click Here To Register...]
I'm doing a backup from my unit now.
After, I will try.
But driving at the real condition, just tomorrow I will have the results.
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Rodrigo do you have a similar thread on Nimrag forum? If yes what do other brazilian friends say ? Many users have bad accuracy?
It should be nice to share their results if you can report them ;)
Quote:
Originally Posted by giuseppe66 [Only registered and activated users can see links. Click Here To Register...]
Hi, Thanks for the tutorial!
But I'm not understand some steps:
4) then i've flash to 34xx again with firmware 3.50;
5) Caty's solution "convert 37xx34xx.zip"
Twice? Did you tried to convert 2 times?
Now I'm with 37XX, so I have to flash 34XX firmware 3.50 and after that "convert 37xx34xx.zip" from here:
"Another way to convert 34xx with logo and enable features :
Flash full 34xx firmware
Unpack the file to an empty SD card, turn nuvi off, insert card, turn nuvi on.
remove sd
and to return to 37xx ,its logo included:
Flash full 37xx firmware
same as above,unpack the file to an empty SD card, turn nuvi off, insert card, turn nuvi on.
remove sd
Download: Udated on 13.10.2012
added Video Player and Premium Point Addressing and updated Ldr.bin"
from this page?
[Only registered and activated users can see links. Click Here To Register...]
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Hi,Quote:
Originally Posted by catymag [Only registered and activated users can see links. Click Here To Register...]
I think most people that converted their units do not realize that issue in my forum...lolol
But I put a notification about this issue and a link for this forum.
But I know that another big brazilian forum have some users working together with us.
They are watching here... :read:
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