Hello for all,
I finally had the courage to convert my 3790 to test running firmware 3490.
First I would like to thank the Angelone (angelozip) Kunix, Rodrigo (rbf) and everyone who contributed in any way to the subject that addresses this topic.

Well I used the firmware has been edited by Knuix (Noeman) Project creators Turbocc rgntools which was compressed boot.ini 3790 along with the 3490 firmware all keeping the same HWID 1101 to install via pre-boot the machine using the updater . exe.
Necessary basic files and folders from a real 3490.

Desconverter is also simple to use the updater and redo the process again with the firmware 3790 also provided by co Kunix.
Necessary basic files and folders from a 3790 or your backup already done before the procedure.

Well put here some pictures that illustrate why I returned my original firmware for GPS Nuvi 3790 Vs5.0 Firm2.60 because the images it is possible to note the great imprecision in satellite reception on the unit converted to 3490, is that GPS does not perform its basic function which is the best route from one point to another.
I think the images speak, no need to explain the failures


1 - Low Precision in the reception of satellites
[Only registered and activated users can see links. ], [Only registered and activated users can see links. ], [Only registered and activated users can see links. ], [Only registered and activated users can see links. ], [Only registered and activated users can see links. ],[Only registered and activated users can see links. ],[Only registered and activated users can see links. ],[Only registered and activated users can see links. ]
Click image to enlarge
Note to flaws in the way I had in testing.


2- 3490 run in 3790
[Only registered and activated users can see links. ], [Only registered and activated users can see links. ], [Only registered and activated users can see links. ], [Only registered and activated users can see links. ]
Click image to enlarge
Show the menus and images of 3490 firmware running on 3790


3- Traffic on 3790 converted in 3490
[Only registered and activated users can see links. ], [Only registered and activated users can see links. ], [Only registered and activated users can see links. ], [Only registered and activated users can see links. ]
Click image to enlarge
Traffic running on 3790 converted in 3490.



4- Video shows 'small' failure 3790 converted in 3490
[Only registered and activated users can see links. ]
In this video you can notice I'm stopped at a traffic light and the GPS indicates I'm at 100km / h approaching the place I am standing due to this delay often missed my ways.


Stay there all my contribution, but I would not recommend converting the 3790 to 3490 while the problem of satellite reception is not resolved if it will be no solution.

A hug to everyone and
Good Ways