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  1. #191
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    Hi guys,

    I'm during a travel using my Garmin.
    Until wednesday I will be back to tests.

    PS: I'm using the original firmware from 3790T. The accuracy, almost all the time 3 meters.

    []'s

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  3. #192
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    Quote Originally Posted by lolypop000 View Post
    @rfb;isg:giuseppe66

    Please look in .System/Diag/html/ what number do you have in .html file:

    Part Number:
    Rev:?????


    my is Rev: 01


    sorry, i've do a travel and now i'm return home

  4. #193
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    Quote Originally Posted by lolypop000 View Post
    We have in

    37xx = 10081601GRMN01

    34xx = 11072801GRMN01






    @Caty,Neil
    What version FW do you use when you convert 37xx to 34xx?

    p.s.
    @rfb;giuseppe66;isg
    What version of FW do you use when convert 37xx to 34xx?

    i use 7.10 version of firmware

  5. #194
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    ...sorry for my english...
    MY EXPERIENCE

    i've a 37>34. When it was 37 reception was 3 - 5 meters about and when 34xx bad reception 8 - 15 but not important accurancy but quality of signal. In fact quality was very poor, bars of satellities go up and down in secret menu so when i navigate along a street car jump from my route to another and in city this is a problem for me. i'do many test thanks to all but without good solution. Last week i've do a travel (2000 Km about) and i've see that accuracy is from 7 to 20 meters, depending also the weather and mountain where i was so today i've decide to return to 37xx for test accurancy and looking for files differents. in 37xx accurancy was again good 4 -6 meter in my balcony (no good place) so i have clean hard drive of nuvi (folders and files not important) for see the different from files 37xx to files 34xx. then ive flash to 34xx again with firmware 3.50, then Caty's solution "convert 37xx34xx.zip" and then Lolypop000's solution "region 139..."
    Accuracy was very good after 10 minutes, about 4 - 6 meters but thing for me important is that blu bars of satellities quality are stable. Not up and down. I've not try my "new" nuvi on the road but i've see that accuracy is very different. So i've try to update to last firmware for see the differents and now with firmware 7.6 accuracy is good. I've see accuracy until 8 meters after 5 minutes then i've stop and go inside my room because out is to much cold!!! but blu bars don't go up and down and accuracy is stable. repeat that i've not do a on the road test but tomorrow i think yes. then i replace right files (not systems files) with webupdater and my backup (language, text, asr, keyb) and now it's ok. Tomorrow i write if this is a good solution or only a way to spend 1 day with our nuvi
    Last edited by giuseppe66; 19th February 2013 at 19:22.

  6. #195
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    If you have tomorow good accuracy, then please write tutorial of your step and create pack with file that you use for this test

    I appreciate all of the effort, from all of you that are trying to solve the accuracy problem. Hopefully we will succeed in solving it. Respect to all effort inputers and thank you for the time you are spending in solving the issue

    Last edited by lolypop000; 19th February 2013 at 19:34.

  7. #196
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    Loly, I installed "Part Number 006-D2617-00 Rev. 0A" yesterday, but not noticed alterations in precision in my measurements, but they were only statics (I owe a dynamic evaluation). However I noticed a curious thing: after the installation of the patcher the GPS lost all satellite almanac and began to tune from scratch. In short, this region and this "part number" has to do with some function related to tuning of satellites. It remains to discover which more "part number" would related with this..

    As promised I am by posting videos and photos of measurements made ​​with the precious help of Tadferreira which has also a 3790 original. The first film was made more than two weeks and the last few days. If already it is not necessary to prove the accuracy of major differences between the original and modified at least should serve as a document and even convincing to those still a little skeptical, lol .. The important thing is that they are dynamic measurements, that really matter.
    Another day, traveling in a large avenue, the GPS indicated that I was on the road side while I was on the main road. 15 or 20 meter accuracy can also be important in navigating urban, since the gps can not recognize whether we have entered a wrong street as immediately as would be desirable, ie, is it possible to use this firmaware, but he leaves, no doubt, very to be desired. If I was a professional driver, I do not would use this firwmare, would keep the same original.
    Sorry for the "Pro" quality..





    ][Only registered and activated users can see links. ]

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    [Only registered and activated users can see links. ] gps beside a geodesic mark with coordinates and altitudes 100% reliable

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    Nuvi 2689; 3490; Etrex 30; Oregon 200 (from Approach S5)

  8. #197
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    Angelo, there's absolutely no longer any doubt that some coverts have unacceptably poor accuracy. Nice comprehensive tests, many thanks to you and Tadferreira for all your time and trouble. But which units suffer worse, and why? This has to be somehow related to certain 37xx hw being less/more compatible with 34xx gps fw. Is your convert maybe a later production model, ie S/N 1W80xxxxx, where first x is not 0?
    'Thanking Posts' are banned. To thank someone, and/or to see hidden links and content, use the [Only registered and activated users can see links. ] button below left of the helpful post then refresh your browser [F5 key]. 'Thanking Posts' are banned.
    Please don't spam. Posts serving no purpose other than to thank or to ask about hidden links are trashed or deleted, it's GPSPower's policy. Please don't spam.
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  9. #198
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    Quote Originally Posted by Neil View Post
    ..But which units suffer worse, and why? This has to be somehow related to certain 37xx hw being less/more compatible with 34xx gps fw. Is your convert maybe a later production model, ie S/N 1W80xxxxx, where first x is not 0?
    Neil, a creeping logic would tell us that the latest 3790 should be more compatible with the 34xx, but for some reason may be that they are more compatible with older hardware or firmware, as you suppose, but we have to test and prove effectively these assumptions. As the conditions of testing are many different, different continents, local and criteria, it is not easy to know. The way is to perform comparative tests with criterion. In my view the most reliable way to compare, whenever possible, is with a 3790 not modified, side by side.
    It seems that the level of accuracy among f modern Garmin GPS is very similar, enabling even a good comparison parameter if we do not have a 3790 original. My 3790 is recent, serial number 381xxxxxxx (sorry, forgot the rest, lol) PCB: V8 8GB 035 DA TC GM. The 3790 of TadFerreira is s/n 380xxxxxxx.
    All possibilities are valid, somehow we will get there ..
    Nuvi 2689; 3490; Etrex 30; Oregon 200 (from Approach S5)

  10. #199
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    mine is 381xxxxxxx
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    You have to navigate to get to the good.
    Nuvi1250/Nuvi 34xx/Nuvi 2200/Nuvi 66/Oregon 600/Galaxy S5 MM 6.0.1/TomTom GO/iGO Nextgen Avic,Basar,Isr.Gift/Navigon
    Please don't flood my pm box with questions you can post on forum!! You won't hear back from me.

  11. #200
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    Angelozip,

    Did you saw another big diference in your video from 37XX from the 37XX trasformed in 34XX?
    See how long 34XX converted takes to scan the screen. Maybe another big diference from 37XX original "drives" for the 34XX firmware?

    []'s

 

 
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