Hi Turbo,

there is definitely no such file on my device, neither gcd nor rgn. And the only things I changed were language settings/files and voices. So seems like JP devices do not have this file. They are shipped by a Japanese company named iinetto. Maybe they have made some changes there?
Anyway, do you have any idea how I should proceed to find the file where JP firmware is stored?

Regds & thank you

karl