Transform a Nuvi 37xx in a Nuvi 34xx for dummies

**giuseppe66** · 11th October 2012, 12:14 PM

solve 140 reg problem if you have then (after you have do a backup of your file) rename folders (see post 1 "Rename Txt ,Voices and Keyboards folders in your Nuvi to another name eg Petx Poices etc."), delete file inside ASR folder, run webupdater and then mapupdater and every thing work fine. Read post n.1 when you have finish read again post n.1 and then, if you have time, read again. So you are sure that every thing work fine

**catymag** · 12th October 2012, 11:38 PM

Updated in post n1:
Another way to convert 34xx with logo and enable features :
Download: Udated on 13.10.2012
Added Video Player and Premium Point Addressing features and updated Ldr.bin

**Cnfhbr** · 13th October 2012, 08:27 AM

Originally Posted by catymag

Added video player and premium poi features and updated Ldr.bin

Long ago I haven't looked through this thread.
Is it (premium poi) the same as the Premium Point Addressing?

**catymag** · 13th October 2012, 12:24 PM

@Cnfhbr
I'm not sure, but probably are files that come with CN, may be like this one with CNNAM:

TruckDown database.
Enhanced truck services from w w w.TruckDown.com
Such services include heavy duty towing, tire service, truck repair, trailer repair, mobile repair, and many other services required to keep trucks rolling safely

Users can test

When previous file in post n1 had been posted, Video Player didin't work and Premium Point Addressing wasnt present.

**Cnfhbr** · 13th October 2012, 02:02 PM

@catymag
What does it look like in the supported_features.html? Premium poi - is it so?

**lolypop000** · 13th October 2012, 02:42 PM

In html is : Premium Point Addressing

<html> Supported Features Part Number: 006-D2617-00 Rev: 0A 3D Buildings 3D Terrain TTS Phonetics Junction View Lane Assist Speed Limits Traffic EULA Photo Nav ASR Historic Traffic Custom Avoidances Advanced Detours Premium Point Addressing 2D Footprints 3D Buildings Supplementary Bluetooth MP3 Video Playback </html>

**catymag** · 13th October 2012, 02:55 PM

Yes thanks ,feature name corrected

**feroya** · 15th October 2012, 07:14 PM

I'm having accuracy issues with the GPS after conversion. Many times the unit will think I am on a different street, or jump during navigation. When I put it side by side with an unmodified 3760, the accuracy is ALWAYS worse than with the original 3760 firmware. Even when I compare this unit to an older nuvi 465t, the accuracy reading is always worse. I think this is a real problem.

I remember reading that the conversion process does not update the GPS chipset firmware. Could this possibly be fixed?

Is there anyway to update the GPS chipset firmware?

**Giomen** · 16th October 2012, 12:03 AM

Originally Posted by feroya

I'm having accuracy issues with the GPS after conversion. Many times the unit will think I am on a different street, or jump during navigation. When I put it side by side with an unmodified 3760, the accuracy is ALWAYS worse than with the original 3760 firmware. Even when I compare this unit to an older nuvi 465t, the accuracy reading is always worse. I think this is a real problem.

I think this problem does not apply to accuracy of GPS. It is problem of software. In 3490 SW changed algorithm of attaching a cursor to the road (averaging the real position and map coordinates - by another words). No secret what roads on map not always corresponds to the real position. Conclusion is based on the fact what all Nuvi 3490 (unmodified!!!) get far more errors when navigating or calculating route on not sufficiently precise maps then other models of Nuvi. May be Garmin thinks what all maps for this device are also perfect as this Nuvi by default