@boll
Some devices using the same firmware have hardware differences. An old example, nuvi 13/1450 and 14/1390 where the latter has a bluetooth module, that's of course missing on the former albeit same HWID. Also in the 1xxx series, some devices had different features enabled via the splash, contained in region 16. Flashing a senior model logo to a junior model can enable JCV for instance, even in a base 1300. Indeed, as a run-out of the model, 1300 was released with a logo flashed which enabled LA & JCV in some markets. There were other earlier instances too, EU nuvi 710 flashed with AU 7xx logo enable TTS on that device. Second generation HWID 0827 nuvi 2xx/W (2009) lacked traffic but when flashed with nuvi 2x5/W logo the traffic feature was enabled. Maybe Garmin is still using region 16 to enable/disable features in Drive series?