Step 1. Root your device, see tutorial here. You have to root you device decause adb shell comand can’t run in an unrooted phone.
Step 2. Download IMEI MAKER from here. Unzip IMEI MAKER.zip and open the folder. In the free space of the folder press Shift, Right click and choose to open a comand window. You can also go to Widows Search, type cmd and right click run ass admistrator. Then type cd /(the path ot the IMEI MAKER folder) or cd and drag the folder. In the commad window type imei.exe imeinumber1 space
imeinumber2. Like this imei.exe 123456789000001 123456789000002 then press Enter. A new file will be created in the IMEI MAKER folder with the name MP0B_001_NEW.
Step 3,1. Open a command window in the adb fastboot folder like Step 2, connect your phone to your PC and type:
1. adb reboot recovery
2. adb root
3. adb push MP0B_001_NEW /data/nvram/md/NVRAM/NVD_IMEI/MP0B_001
4. adb shell chmod 660 /data/nvram/md/NVRAM/NVD_IMEI/MP0B_001
5. adb shell chown system:radio /data/nvram/md/NVRAM/NVD_IMEI/MP0B_001
6. adb reboot
The phone will reboot, if it will stack rebooting take the battery of or don’t type adb reboot and reboot it from the recovery.
Step 3,2. If you want an easier way you can download IMEI REPAIR from here. Open the file with winrar go to bata/nvram/md/NVRAM/NVD_IMEI brag and drop the MP0B_001_NEW file but you have to change the name to MP0B_001. Exit winrar and now copy the IMEI REPAIR.zip to your sd card and install it using your recovey.