Omnia European ROM problem

[Guest mdilello]

Hello, i'm from argentina, ì have change mi i900l rom (vdhj4) to an european cooked rom (dxia1), the problem is that this european version block the american 3g frecuencies, so i don't have 3g anymore, now 3g only works in 2100, do you have any idea how to solve this issue ? any america rom ?

thanks!