I recently acquired a Garmin StreetPilot 2720 with all but the box, cheap, on eBay. I updated the firmware/maps/etc thanks to old forum posts found via the web and it works great. [FYI NT maps DO work in the unit despite what Garmin/others say. Also the track log has the normal 10,000 points NOT the 2,000 Garmin states. I've run my own tests to confirm this.]

[Login or Register to remove this advertisement]

Being a model from 2006 it DOES NOT implement USB mass storage mode nor does it take ANY type of external memory. Thus there is no visible GarminDevice.xml file. It seemingly has 2GB of internal (ONLY) flash.

Garmin Express 7.16.3 does find the device (once the Garmin USB protocol drivers are loaded) but then states that the device is unsupported. However Webupdater (the older 2.4.2 and latest 2.5.8) do see and offer updates for it.

All that said does anyone know of a way to see what other stuff (besides the main firmware/maps) is in it? I've used GPSDaemon /full to dump several memory regions in it but have no idea where everything is stored. WebUpdater obviously knows how but it only shows updates NOT what is currently loaded.

Regards,

A1

AnnoyedOne Reviewed by AnnoyedOne on 3rd May 2023. Garmin StreetPilot 2720 question I recently acquired a Garmin StreetPilot 2720 with all but the box, cheap, on eBay. I updated the firmware/maps/etc thanks to old forum posts found via the web and it works great. [FYI NT maps DO work in the unit despite what Garmin/others say. Also the track log has the normal 10,000 points NOT the 2,000 Garmin states. I've run my own tests to confirm this.] Being a model from 2006 it DOES NOT implement USB mass storage mode nor does it take ANY type of external memory. Thus there is no Rating: 5

I have an answer to my own query.

Using a network traffic monitor (Wireshark) I captured what WebUpdater sent to/received from the Garmin servers with my 2720 connected.

After processing the traffic it turns out much of it is in XML format (like GarminDevice.xml) . For example:

Code:

Only the registered members can see the CODE Contents. Please Login OR Register.

Looking through the whole file I know what WebUpdater offers as updates. The logical conclusion is that the other stuff already exists in the unit. Another way to do this (more quickly) is to delete everything associated with version 0.0 (see <Request> above) since those things aren't present in the unit (i.e. are offered as updates). Any other stuff is already present.

For anyone interested here's what I discovered. My 2720 (now) contains

* 1820MB of 2024 NT "preloaded" maps [Garmin claims they're not updatable--false!] covering my area of interest.
* 100MB of supplemental maps [user loadable] covering other areas of interest.
* Unit firmware 7.20 [from the Garmin website].
* Five voice files [updated/loaded via WebUpdater].
* Traffic receiver firmware [already loaded].
* Custom startup "splash" screen image [uploaded with xImage] showing owner info.

In addition I have a number of waypoints and routes loaded. The track log (when on) collects up to 10,239 points (tested).

All in all this 2720 is, IMO, just as good as most new Garmin models (if not better in some respects). I paid a small fraction of the 2006 "new" price for it. That said Garmin shows it as "discontinued" and won't provide support for it. Neither will Garmin Express. I had to learn the in/outs myself.

A1