: The first place to look for updates is the official Mercedes-Benz website. They often have a support or downloads section where you can find software updates for your vehicle's system.
: Power on the COMAND unit and insert the Service Update CD into the single disc slot in the head unit, not the CD changer or the navigation drive in the trunk. Comand Aps W211w219 Updatecd 21 090 Rar
The Evolution of In-Car Infotainment: The W211/W219 COMAND APS Update : The first place to look for updates
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The search volume for persists because: