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

**catymag** · 30th July 2012, 09:00 PM

NV backup will restore NV only.
You have to make also nuvi files backup:Enable hidden files in Windows and copy full content of nuvi to your pc, .System folder included.
If you have those 2 backups , you can restore it at 99% of nuvi failures.
To Update go here:

Code:

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and follow this
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Source gives you the file link, download, delete old one in Nuvi ,copy the new one in Garmin folder in int memory or sd and restart Nuvi. Dont touch it till it wont restart itself and be sure to have your battery full charged before updating

**rexxxxx** · 1st August 2012, 09:26 AM

Hello, have 3790 flashed to 3490. Worked great up to firmware 7.10 without any problem - now flashed with version 7.10 and the device is unusable - restarts every time I try to navigate to some saved POI. Also map screen becomes gray all the time - no map is shown. When using the MP3 player also reboots itself - very unstable.
Anyone experiences the same ?
How to go back to firmware 6.80 or the deleted 7.00 which worked fine on my device ?
thanks

aekhong · 1st August 2012, 09:58 AM

@rexxxxx
Just relax.

No one report about this , then try to do clear Non Vol and see.

**rexxxxx** · 1st August 2012, 10:31 AM

Originally Posted by aekhong

@rexxxxx
Just relax.

No one report about this , then try to do clear Non Vol and see.

Thanks man - I think this sorted the problem. Never had to do Non Vol clear on firmware update before !

**Astx** · 1st August 2012, 11:01 AM

Into 34xx 7.00 firmware i found one new config strings not exist in 6.60:

DeviceConfig_PhotoRealJcv_Enabled.xml
DeviceConfig_PhotoRealJcv_Disabled.xml

What is the difference maybe with old one DeviceConfig_JunctionView_Enabled.xml ?

**Cnfhbr** · 16th September 2012, 08:59 AM

Originally Posted by Astx

Into 34xx 7.00 firmware i found one new config strings not exist in 6.60:

DeviceConfig_PhotoRealJcv_Enabled.xml
DeviceConfig_PhotoRealJcv_Disabled.xml

Should this feature be enabled now for the sake of completeness?

voyager56 · 16th September 2012, 10:27 AM

Originally Posted by Cnfhbr

Should this feature be enabled now for the sake of completeness?

I think yes. But to enable this you must downgrade to some previous FW version ore use region 140 patching.

**Cnfhbr** · 17th September 2012, 10:48 AM

Originally Posted by voyager56

But to enable this you must downgrade to some previous FW version ore use region 140 patching.

As it turned out the firmware 6.60 doesn't perceive the DeviceConfig_PhotoRealJcv_Enabled.xml

Therefore, all hope for the region 140, but need a correct address of this feature in the reg_140.bin offset (address '20' is not suitable).

Perhaps it was just a joke here:

Originally Posted by Astx

Into 34xx 7.00 firmware i found one new config strings not exist in 6.60:
DeviceConfig_PhotoRealJcv_Enabled.xml
DeviceConfig_PhotoRealJcv_Disabled.xml

**catymag** · 1st August 2012, 11:37 AM

Basic Junction View displays only the road layout, essentially a 3D rendering of a road map.

Photorealistic Junction View displays much more details, as if you are looking at a photograph or video of the actual intersection.

**Astx** · 1st August 2012, 11:54 AM

Originally Posted by catymag

as if you are looking at a photograph or video of the actual intersection.

I think all modern JCV-files in map sets for 37хх, 34хх and 35хх containing only Photorealistic Junction. Why add this enabler into they firmware?
Uh-oh, i forgot about how many mapsets exist for Garmin, sorry.

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

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