I have a 2003 M5 with a MKIV running OS v28.

My Nav shows it's 4-1/80, Receiver SW Ver 1.8 and Receiver SW Date 15.11.1.

Some posts suggest v32 (4-1/100) as it may solve issues with the new 2009.1 map disk yet others say that v28 is the latest that has any effect on the MKIV.

Can anyone clarify the situation?

Thanks...