Patent ID: 8185254

Claim:
A method for updating navigation information, comprising the steps of: connecting to a navigation information update system; determining if at least one navigation information update is available from the navigation information update system; if the at least one navigation information update is available from the navigation information update system, determining if an intended recipient of the at least one navigation information update is available or unavailable for an update; downloading, when the intended recipient of the at least one navigation information update is determined to be in service, the at least one navigation information update to a navigation information cache onboard the intended recipient, wherein when the intended recipient of the at least one navigation information update is determined to be out of service the one navigation information update is automatically installed from the onboard cache; and downloading, when the intended recipient of the at least one navigation information update is determined to be available for the update, the at least one navigation information update to the navigation information cache onboard the intended recipient, and installing the at least one navigation information update in a navigation information system onboard the intended recipient.