2008 ES350 Navigation Downgrade

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Oct 24, 2008 | 07:45 PM

njsges

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Driver School Candidate

Joined: Sep 2008

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From: ky

2008 ES350 Navigation Downgrade

I have my friends 2007 ES350 Navigation disc. If I make a backup, can I downgrade my 2008 from 7.1 to 5.1, and will it work? Any help would be greatly appreciated.

NJ

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