So, back to the start, which firmware should I flash? Based on CPU-Z it is exynos hence, 900H. Based on Battery Bay info it is 900F. Based on S/N in battery bay it does not exist Based on the info I've first saw it is 900H with some firmware that I can not find on web (even using translate.google.com I received links but they are all dead)

Which initial stock firmware should I try first? any recommendation?

Thanks by the way...