Quote Originally Posted by slabber View Post
Jim / Chris

* 5570 - BT works a treat on my Nexus 4 so looks like this is sorted. Might still run the discs for peace of mind.

Cheers - Graham

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If 5570 seem to work and VCDS checks out, then don't mess with it.

The 5570 upgrade is a firmware upgrade, not a software upgrade, if you're in IT then you'll understand that this means you overwrite the bootloader when you upgrade, if there is any sort of glitch, powerloss etc., then the bootloader is likely to be corrupted, so the component is useless and has to be replaced. And you probably have 20+ components to upgrade. That is why Audi dealers are so reluctant to upgrade. If you have a definite reason to upgrade, because you know there is a problem, then go ahead, but there is a small risk that you'll have to replace something that is expensive and hard to reach.