Specific to that model. Makers tend to distribute a model in say Spain and UK so there's no reason to add Japan to the code. That code space is still tight so they only add countries where the model was sold.
Hi Tech gurus,
Need help with my LG Smart TV box.
1) After doing a "Factory Reset", Internet Browser APP is missing.
2) How to add more Countries in "Country Setting". All I see are 2 countries and OTHERS.
Thanks,
Mike

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic