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Navigation And Audio Questions

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Morning All,

Picked up my 2006 GS300 SE Ltd. Ed. on Saturday. Great car, loving it. I have a few questions to start off.

The DVD that was in was a 2005-2006 disc, so I've ordered the 2012 disc from, that's in the post soon. Do I need to consider anything else when bringing the Mk3 (?) nav up to date? Coming from BMW land, those units had firmware updates to improve functionality, in addition to the map discs. Does anything similar exist for these units?

One of the criteria I was looking for on this car was the Mark Levinson audio, something which did not come with this car. It's not a great loss, I would prefer to get a better car than concentrate on a single optional extra, but I was wondering, and forgive me if it's been discussed, I couldn't find it, is it worth considering retro-fitting the ML audio or is it too big/complicated/expensive a job to even think about?

Does anyone recommend upgrading the speakers alone on the non-ML systems, is it worth it again, with this sort of thing, I guess anything's possible, but does it show an improvement? Has anyone tried it?

Many thanks in advance for any input offered :)

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If there is a firmware update it will be contained on your new disc and will be applied automatically so no need to worry about that.

Upgrading to an ML sound system cannot really be done retrospectively, the costs of the amps and speakers would cost you thousands from Lexus, normally there are more speakers on the ML system too so you would have to cut holes and run additional wiring!

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