I9060 MT6572 no 2g ONLY 3G !!!!

i have i9060 dead and after flash it by many firmware finaly phone alive by firmware of i9060i !!!
i repair imei (write NVR) and use Mauimeta, all work ok (BT, WIFI, CAM) and imei is show ok (*#06#)
the problem is the phone detecte only the 3g Network !!!!
i am confisious !! is hardware or software problem ???
The expert explain me 😉 , and if is existe solution indicate me.
thank’s for advance