Thread: How to convert 3790us to 3790 Sg/My

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:

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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.