I tried updating LNM to the latest AIRAC cycle , 2409, a few times by running the Navigraph FMS Data Manager, and each time reloaded the MSFS scenery database, but LNM (64 bit version) still shows AIRAC cycle 2408 installed even though the FMS Data Manager shows LNM has been updated. So what am I doing wrong, or what else do I need to do to update LNM to the current AIRAC?

Thanks for any help,

Al

Edited September 5, 20241 yr by ark

See here for possible solutions: https://albar965.github.io/littlenavmap_navigraph.html

Most important: Quit LNM before updating since the Navigraph FMS Data Manager skips the update silently.
Another issue is that the FMS Data Manager sometimes installs the update into the wrong folder.

Alex