Thread: How to reverse back your Garmin unit to a previous FW version

Attach nuvi usb, modify the sw version in garmindevice.xml to a previous version, in your case, for example 7.30 if you want to flash 7.50, don't remove nuvi from USB, put the *.gcd you want to flash on desktop along the Webupdater icon shortcut (they must be both on desktop), drag&drop the *.gcd in Webupdater and flash

Thanks for your reply.

It seems having both the firmware file and the Garmin Express Updater on desktop is essencial, I hadn't understood that from the instructions.

I edited the .xml file to 3.70, to update to 4.00. I had to turn off the internet so in Tools (in Garmin Express) finally the version appeared 3.70.

But, there were no different options, like "additional info". Nevertheles, I followed the instructions, ejected the nuvi, turned it on, but the version is still 7.60.

I tried with three different files from [Only registered and activated users can see links. ] 2.70 (nuvi2xx7_GCDFile__270.gcd), 4.00 (nuvi2xx7and2xx8_GCDFile__400.gcd) and 4.60 (nuvi2xx7and2xx8_GCDFile__460.gcd), no good luck with either of them.

Any suggestions?