Changing the language settings won't change the country code, the country code (or area code as it's called in my players settings) is located in the parental control settings & requires a 4 digit pin number in order to change it.
Someone posted about it on the
Criterion forums back when Sentai first started geolocking their discs.
Although, for Sentai releases since 2015 setting your players country code to any country other than Japan (just to be safe I would recommend not selecting any Asian country) will allow the discs to play.