I got a Becker with my car about 6 weeks ago, it was fitted in the car when I collected it and they gave me the box with the instructions and aUSB lead. It was,and still is,working fine. The box has a serial number starting M054 and another number starting A 166 (presumably a Mercedes number). It even has a 'best use before' date Q3/2016.After a few weeks, I connected it to my computer, to get the free update, I had a lot of difficulty getting my computer to recognise it and I'm not sure if it did a firmware update, it did copy a library onto the computer and reboot during the process, but it already had the latest maps. I don't think I'll bother trying again.The message may have referred toa firmware update which was not required on your unit.