I purchased an SD card from Tom Tom with update 1015 to fix the bug. There are no instructions with it. Do I just put it in and start using it or do I have to "format" it? I notice on the forum header that there is now another update to fix this problem (v10 29). Does this mean that I have wasted my money by buying the update Tom Tom advised me to. I cannot update myself as I am running a macbook which no longer supports FAT 32 files which caused endless troubles last time. It was only thanks to one of your very patient tech guys that it was sorted.