Radio connection loop in 3.0 baseband modems

Hello! I now move on to new cyanogen roms but since the firmware is updated new baseband is "di 3.0".

I have a oneplus one which its IMEI changed by changing 00550 NV ITEM. Since oneplus one has its own security policy about changing IMEI my 2G not working yet I can able to run 3G in 2.0 modems ( Kitkat Modems ) (My country doesn't have 4G btw).

Since I installed a new rom with a new firmware my reception run into connection loop which is connecting and instantly drop the connection says no sim card. Since its in a loop it tries to connect over and over and drops.

I can easly save this by flashing any kitkat modem, connection become stable but it breaks gyro sensors and the sensor fixes in xda won't help the issue..

Is there any way to disable natively disable 2G on DI3.0 basebands ? or is it checking the NV item and breaks the connection ? if it is, is there a way to disable that also ? I Can't use any roms because of this baseband and sensor issue.

Note : I also tried to write its own IMEI again but it is still looping and no 2G in 2.0basebands.