Pretty sure devs must ignore. This isn't their, devs, problem, that MTK are not cooperating and pretty "closed" platform. Also if no cina rom for platform, almost zero chance for eu rom. Only official global or EEA.
Better not. You need to lock&unlock, cause in 99.9% chances you got china version with indian ROM installed with some strange china sellers magic. Get rid of that as fast, as could. More you are waiting, more you ll wait for relock&unlock =)