I have a strange problem that I hope someone can help me with. I encounter several speed cameras on my way to work, one being a 30mph camera which showed as 40mph on my F900bt. Fine I thought, the data is outdated but yesterday it showed correctly as 30mph and today went back to 40mph. I've had several similar situations, one being a 40mph showing as 60mph but on my return it showed correctly.
Is this a known problem? is there any advice to correct this?
Cheers