Garmin devices software versions summaries

Hello,
I'm looking for Firmware for an RV Camper 770 LMT-D. Unfortunately I can't find anything.

Thanks

RV/Camper 770 software version 7.70

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Code:

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https://download.garmin.com/software/RV_Camper770_770.gcd

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Is there any way to dump the current firmware on my Garmin before updating? Thanks!

That's a device-dependent function. Most modern devices have "rrgn" command available to dump unprotected regions as BIN files on a media card so it's possible to at least get some fw components from the device. Read this thread: [Only registered and activated users can see links. Click Here To Register...]. If you have further questions please post there as it's a bit OT here.