OP2 LTE Help

======= I do not speak English well ========

I have china Ver OP2 Oxygen os.

china ver op2 is support

FDD-LTE : 1/3/7

but my country

FDD-LTE : 1/3/8

OP1 change rom supprt all lte

OP2 is same?

Summation : how to support china ver op2 FDD-LTE band8