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What does this entail for us 2004/2005 Navigation prii? When we upgrade, will there also be an upgrade of the map quality as well? Or will that be an entirely different system? It offers increased map quality, over 32,000 colors, an ETA (Estimated Time of Arrival) display, a route tracer function, voice recognition street address search functions that allow you to enter a destination while driving, and can now be set to operate in English, French, or Spanish languages." "The optional voice-activated DVD GPS (Global Positioning System) Navigation system is the most sophisticated yet. If you can get ahold of an '06 disk, it probably won't hurt to try it- best case, you get all or msot of the new features, but if the software is incompatible, the unit will say so, worst case, you have to get into the nav diag screens and clear the flash out and reload from the original disk. Pioneer, the maker of my aftermarket nav has been very good with making new software releases that are compatible with older navigation hardware and add new features (up to the capabilities of the hardware- eg, the latest software supports satellite traffic, but the satellite receiver is not compatible with my older nav unit, so obviously I can't get this feature the latest software also supports "memory nav", where all the maps needed for a route can be loaded into memory and the DVD ejected and the player used for video or music, but again, my older hardware doesn't have enough memory, so this feature is not available), but this is not true of most other vendors. ![]() Now this does *NOT* mean that the '06 nav disks will work in a previous year's system- this may or may not be the case. The next time, the firmware versions match, and it starts loading map data normally. Generally, what happens is that the first thing the nav system does is look for the version file on the disk and if it's different from what it is currently running, it reflashes itself with the new firmware on the disk and reboots. ![]() If the Toyota nav is anything like most aftermarket navs and uses the industry standard map disk format (and I think it does), the firmware update is usually included with the updated map and POI data.
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