How To Write/Repair imei On All Mediatek Chipset 100% Tested Method

Info

Some Reason's Of  imei invalid Or Null 

01 Flashing Custom Rom 
02 Flashing Wrong Root Files
03 During Upgrading Or Downgrading

How To Repair Invalid Or Null IMEI

Many Ways And Many Software Available On Internet Of Writing Write IMEI
Today I Tested A IMEI Writer Software Maui Meta 3G Write IMEI On Huawei LUA-U22

How To Repair Invalid Or Null IMEI

Download Maui Meta 3G
Download Here
Download CDC Driver
Download Here

Now Follow These Below Steps

01 Install Maui Meta 3G In-to PC Or Laptop Window 7 OS Recommended

02 Now Download Root Explorer Apk From Play Store or Click Here

03 After Installing Root Explorer In Phone Open it And Copy BPLG File From System/etc/mddb On Phone Memory Or In Memory Card Then Copy In-to PC Or Laptop Which You Use

04 Now Power Off The Phone And Remove battery For 5 Second Then Insert Again
05 Ok Now Run Maui Meta 3G From Desktop icon


06 Now Click On Option Button And Then Click On Connect Smart Phone Into Meta Mode

07. Now Click On Reconnect Button And Then Attach Your Phone With PC Via Data Cable

 08. After Attaching Phone Stuck On Logo it's Mean Now Phone Successfully Connect In                         Meta-Mode. Some Phone After Attaching Not Going Into Meta-Mode Auto So Just Press
 * Power Button For 3 Sec.
 * Now Open Device Manager And Watch CDC Driver Is Missing Just Download Above  *Given CDC Driver And Update Manually Trough Device Manager.

 09. Now Disconnect The Phone And Close Maui Meta 3G

  10. Now Run Again Maui Meta 3G And Attach Phone Via Above Method.

 11. When Phone Successfully Connected In-to Meta Mode Light Color Yalow And Drop

           Down Menu Appear  Now Select IMEI Download From Drop Down Menu

 12. After Selecting IMEI Download A pop-up Appear Like Image

13. Now Click On Change NVRM Data Base File And Select BPLG File That Already You Copy           From Phone In-to PC

 14. Now Write First 14 Digit Of Your Phone IMEI Sim 1 And Also Write First 14 Digit Of IMEI             Sim 2 

 15. After Writing 14 Digit Select Sim 1 And Click On Download To Flash Then Select Sim 2
          And Click On Download To Flash 

IMEI Writing Done Now Remove The Battery And Insert Again And Power ON And Check The IMEI *#06#