You can automatically update the navigation data in the A340-600 Pro by logging into your Navigraph account in the EFB under the "SETTINGS/ACCOUNTS" page.
Once logged in, each time you load the aircraft, the aircraft will automatically check for and download the latest Navigraph data cycle. When a new navdata cycle is downloaded, it will automatically be set to the secondary nav data base. In order to use the newly downloaded Navigraph data cycle, you must change the second nav data base to the active nav database in the MCDU.
Note: When changing the active navigation database, a simulator freeze may happen for up to 1 minute. This is normal, and the simulator will resume shortly.
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