How to convert 3790us to 3790 Sg/My

aekhong · 15th November 2010, 06:08 AM

Originally Posted by shahnowaz

updater.exe cant find help pls

Here it is ..[Only registered and activated users can see links. ]

**shahnowaz** · 15th November 2010, 01:25 PM

thanks but cant detect nuvi 765t
can some body explain that to me again pls

aekhong · 15th November 2010, 02:59 PM

Originally Posted by shahnowaz

thanks but cant detect nuvi 765t
can some body explain that to me again pls

At computer
-Drag rgn on updater.exe
-check USB connection

At Nuvi 765
-Plug in USB
-Push power botton to the right (Lock position)
-Connect to computer

Nuvi will boot up
-Press your finger at middle of screen
-You will see a little "system" indicate nuvi is in pre-boot mode

At Updater.exe
-Click OK.

Good luck

**Astx** · 19th November 2010, 05:04 PM

Originally Posted by aekhong

Now I think we have a way to go back to US firmware for Nuvi 3790us converted to Sg/My.

Agree this. Just return to 2.50EU from 2.30Sg/My
Its very strange to see it. What is "magic" version number - 2.19??

**kentcp** · 2nd December 2010, 09:07 AM

Originally Posted by aekhong

Now I think we have a way to go back to US firmware for Nuvi 3790us converted to Sg/My.

Great ~ Is there a thread to guide us how to convert back to US firmware ? Thanks.

aekhong · 2nd December 2010, 09:47 AM

Originally Posted by kentcp

Great ~ Is there a thread to guide us how to convert back to US firmware ? Thanks.

It's easy
Make a rgn file to go back US.
-Use RGN_Tool to open original US .gcd
-Override swv to 219
-save to rgn

H/R your unit
Flash with RGN

If boot up normally
Rename folder to original name
H/R again

That's it. !!

**kentcp** · 3rd December 2010, 10:55 AM

I notice Garmin force us to using Webupdater to download the US formware. In this case, how to download the US.gcd ? Recently, US firmware released to 3.60. Should convert back to 2.50 then update by webupdate to 3.60 or direct convert back to 3.60 (but need to find a way to download the US.gcd first)

aekhong · 3rd December 2010, 11:12 AM

Originally Posted by kentcp

I notice Garmin force us to using Webupdater to download the US formware. In this case, how to download the US.gcd ? Recently, US firmware released to 3.60. Should convert back to 2.50 then update by webupdate to 3.60 or direct convert back to 3.60 (but need to find a way to download the US.gcd first)

This is direct download link

Code:

Please Login or Register to see the links

You can go back to 3.60 without 2.50 first.
Actually you should download .gcd file for updating later not by updating online by webupdater.
Here is reasons.
1). Webupdater or dashboard will check your HWID out by searching in garmindevice.xml
2). HWID in garmindevice.xml may be wrong., because you may use a modified firmware that contain a wrong HWID within fw_all.bin .,
For example ::For 37xx series :: You can try to use RGN_Tool to make a rgn file
-Use original boot.bin
-Add other regional fw_all.bin override HWID to same as boot.bin

Flash
nuvi boot up
Get HWID from garmindevice.xml and you will find it's wrong HWID

if you connect your unit with webupdater
Your unit may brick with wrong gupdate.gcd send from webupdater.

**kentcp** · 3rd December 2010, 01:29 PM

Thanks so much. I just dl the Sg/Mal firmware but it is .exe format, not .gcd. No idea how to perform the 3rd step.

•File->Open and select your Sg/Mal firmware GCD or RGN file

aekhong · 3rd December 2010, 01:45 PM

Originally Posted by kentcp

Thanks so much. I just dl the Sg/Mal firmware but it is .exe format, not .gcd. No idea how to perform the 3rd step.

•File->Open and select your Sg/Mal firmware GCD or RGN file

Try this
- Right click on .exe file
-Extract files
-Then you will get .gcd inside.

Try it