This is what I find so far about Subaru Maps update and DVDs.
So, firstly the subaru OEM navigation systems in 2007 + Subarus are ALL Kenwood DV3200 based systems. These are actually made by DENSO, who happens to make systems in Toyotas, Saabs, Volvos and Landrovers along with lots of GM vehicles.

This is important because it is possible to use Toyota, Saab, Volvo and Land Rover Maps in your Subaru Navigation system.

Your navigation system "MAP" DVD actually consists of 2 sets of data. The 1st is the "System" and the second is the "Map" itself.

As far as I know, you can only update the "system" software using Subaru branded DVDs, but if all you want is the most up-to-date map data, then you can use certain other DENSO maps, many of which "might" be available to registered users over at gpsunderground.com

The way you get your Subaru Navigation system to load a non-subaru DENSO map is actually quite easy.

1) Eject your current Map Disc
2) Disconnect the battery and then reconnect it
3) Turn your car to the on position, but don't start it
4) Put in your Subaru branded DVD
5) Let the "System" load
6) Eject the Subaru branded DVD

Subaru Denso 2007-2013

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7) Insert your non-subaru DENSO DVD
8) Wait - if you have inserted a compatible DVD, your Navigation will load the map data. Be patient.

If for some reason your system displays the error message "Load Map DVD" and you can't eject the DVD that you just burned, a "secret" way to force the DVD to eject is to press the "tilt" button on your navigation unit and wait until the face tilts all the way, then hold your finger on the upper right corner of the unit until the map dvd ejects.

I am not 100% certain what Denso maps work with what Subaru models specifcally. I can tell you that I have the Toyota Gen 5 V 11.1 (2012) maps running great
So I need to find how DVD structure look like to burn new maps and try it. Anyone can help me about that. Someone who have DVD Toyota Subaru Saab Volvo to put DVD in PC and show me structure from DVD drive. Thanks.
ZoMaMape Reviewed by ZoMaMape on . Subaru Denso 2007-2013 This is what I find so far about Subaru Maps update and DVDs. So, firstly the subaru OEM navigation systems in 2007 + Subarus are ALL Kenwood DV3200 based systems. These are actually made by DENSO, who happens to make systems in Toyotas, Saabs, Volvos and Landrovers along with lots of GM vehicles. This is important because it is possible to use Toyota, Saab, Volvo and Land Rover Maps in your Subaru Navigation system. Your navigation system "MAP" DVD actually consists of 2 sets of data. Rating: 5