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6.1 And 7.1 Gen 5 Nav Disc


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The 7.1 disc has to stay in your '08 IS, since that's what the Nav system reads the information from. It's not like installing a new program in your computer. From my understanding, if you try the newer disc in the '07 IS and than remove it and try to put back the 6.1 disc, it won't work anymore! Than you'll have to purchase a 7.1 disc for about $300. Good thought though. :cries:

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The 7.1 disc has to stay in your '08 IS, since that's what the Nav system reads the information from. It's not like installing a new program in your computer. From my understanding, if you try the newer disc in the '07 IS and than remove it and try to put back the 6.1 disc, it won't work anymore! Than you'll have to purchase a 7.1 disc for about $300. Good thought though.:cries:

Lexus knows how to make money that is for sure. Thanks for the info.

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  • 2 months later...
The 7.1 disc has to stay in your '08 IS, since that's what the Nav system reads the information from. It's not like installing a new program in your computer. From my understanding, if you try the newer disc in the '07 IS and than remove it and try to put back the 6.1 disc, it won't work anymore! Than you'll have to purchase a 7.1 disc for about $300. Good thought though.:cries:

Lexus knows how to make money that is for sure. Thanks for the info.

Why don't you burn a copy? It's dual layer DVD.

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