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TOV Forums > 3rd Generation TL (2004-2008 models) - Maint. & Repair > > Re: Any way to "downgrade" the Navi?

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Atomic Frog
Profile for Atomic Frog
Any way to "downgrade" the Navi?    (Score: 1, Normal) 04-23-2010 02:13
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I borrowed a new map DVD to see what was new on it, if it's worth the upgrade.
What I didn't know is that it isn't just map data, it runs some software update.

Now when I plunk in my own DVD, it complains that it is the wrong version.

Is there anyway to revert the software back to the "older" version?
Trip
Profile for Trip
Re: Any way to "downgrade" the Navi?    (Score: 1, Normal) 04-23-2010 18:45
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I'm pretty sure the TL system would work like the Accord's. Can't quite remember how to get into diagnostic mode... holding CANCEL MENU and INFO? Once there, I think there was a function to reboot te system. It will re-sync to whatever disc is inserted. Try searching at driveaccord or acurazine.
Atomic Frog
Profile for Atomic Frog
Re: Any way to "downgrade" the Navi?    (Score: 1, Normal) 04-26-2010 23:51
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Found it. Thanks.

Basically the procedure is this:
1) Put in the old DVD, wait till the error message comes up about wrong version
2) Hold Map/Guide+Menu+Cancel, this will bring up the diagnostic mode
3) Select "Version", then "Download"
4) Wait for it to do its thing and re-install the old software

That's it.
There were all sorts of other interesting stuff in the diagnostic menu, but I didn't get a chance to play with it yet.
 
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