mobile

Hello, I have a SGH-i337 (I337UCUAMDL) with Goldeneye 49 ROM sim unlocked

My model has a 4G LTE 700/1700/2100 band/frequency.

But here in my country (Brazil) we use 2.5~2.6MHZ frequency for 4G

The international version (I9505) have the brazilian frequency, so my question is: Can I somehow change the frequency or flash the i9505 modem to my cell phone in order to be able to use my country's frequency?

Thanks!