Roger My Garmin 440SX has a buiild in Map for US east coast.

The option that you mention is not available on my firmware. I can not download the with Information>User Data> Data> Transfer> There is no copy build in map. !!! Have you seen this before?
Since you are an expert. How can I check what map is build in and what map I heve on the SD card?
Can I put more than one mao on the SB card?

BR
monette999