@singer021

There's a special thread with unlocked cityXplorer maps usable for nüvi 37xx series. MMR data for public transportation is altered to MapID=800 for those maps so the GMA digital certificate restriction will be circumvented.
They should work in any Garmin unit capable of reading NT maps. The Public Transportation mode will as always only work with the specific Garmin models that have such EPM (Enhanced Pedestrian Mode) feature in the specification.

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