My iphone is from softbank in japan and I need to unlock it but to use it in the Dominican republic, I have moved from japan back home and Ive been told I cant use my phone because the firmware is 04.12.01 and it has the update for 5.1 so there is no turbosim for that, what can I do?
I want to be able to use it here.

I want to be able to use it here.