Check your baseband version on the global and dev ,see if they are different.
If they are you can flash only the baseband like this :
1. Download from official site the miflash version of global or dev version, witch ever you need, and you will see a file named NON-HLOS.bin . This is the modem (baseband) file.
2. Now you must have USB debugging enabled on phone and connected with adb and the modem file copied on the same folder you have adb interface (I will not make a tutorial how to use adb, search the web)
3. Reboot phone in fastboot mode and type in adb interface
fastboot flash modem NON-HLOS.bin
4. After that type to reboot the phone.
fastboot reboot
That's it, you have flashed the new modem.