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    Upgrading NTG2 v4 software/firmware to V16

    Thanks Richard Do you mean a fuse in the main car fusebox? Is there one dedicated to the Nav/Head Unit? Or do you mean one in the unit itself (meaning pull the unit from the dash)?
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    Upgrading NTG2 v4 software/firmware to V16

    Hello all I have just got a new (well, used) R-class R320 CDI (W251). It has v4 of the navigation maps/software so I purchased a version 16 2014/15 genuine MB update disc. However when I insert it and it asks if I want to upgrade the firmware/software, it fails after a few minutes, with...
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