• Admin
  • Receive an Update

    You are Here in » » [Tutorial] How to fix unknown Baseband version, null / invalid IMEI & SIM card not detected on Android phone





    [Tutorial] How to fix unknown Baseband version, null / invalid IMEI & SIM card not detected on Android phone






    Quite a number of MTK users have been having this
    issue on their MTK devices after flashing one ROM
    or another; something i call the 'Custom ROM fever'.
    This issue is mostly caused by wiping / corruption of
    the data partition. The Baseband and radio (for
    network signal) are controlled by the NVRAM
    (located in data/nvram/md/NVRAM/
    NVD_IMEI) and a file called MP0B_001.
    Once this file is missing or the NVRAM partiton is
    corrupted, your phone's IMEI and radio functionality
    cease to exist. There are several methods to fix this:

    MP0B_001 Method

    1. Download ROM toolbox lite from Playstore
    2. Download IMEI.zip (to create a new IMEI file)
    then unzip the content of the folder (imei.exe) to a
    folder on your desktop
    3. In command prompt, navigate to the imei.exe
    containing folder you just created on your desktop
    * NOTE cd\ then enter (returns to root directory)

    Code:
    cd.. enter (goes up one
    directory)

    Code:
    cd foldername enter
    (navigates to a folder called
    foldername)

    4. A faster method is to open the imei.exe containing
    folder > Hold down Shift > Right-click on an empty
    space > Select "Open Command Window here"
    5. When you're inside the imei folder in command
    prompt, type
    imei.exe <15digit_IMEI_1> <15digit_IMEI_2>
    eg

    Code:
    imei.exe 123456789111111
    123456789111124

    6. Press Enter
    7. If both IMEIs you gave are of the correct format,
    a file named MP0B_001_NEW will be created.
    Rename it MP0B_001.
    8. Now you can send it to the sd of your phone
    9. Install ROM toolbox lite then go to root explorer
    10. In root explorer, delete the existing MP0B_001
    file (located @ device/data/nvram/md/NVRAM/
    NVD_IMEI) and replace with the one you just
    created
    11. Long press the new MP0B_001, go to permissions
    and tick all 9 boxes at the top then select ok (don't tick
    special pernissions)
    12. Restart your phone
    13. Your SIMs should be detected, IMEI reflect and
    Baseband version change from unknown to what it
    should be.
    * Note that getting this done might not be this direct
    due to different scenarios but replacing the MP0B_001
    file is the ultimate goal in order to fix the issue.

    IMEI Replacement Method

    This method involves the use of MTK droid tools and
    is only applicable when your SIM cards are detected
    but IMEI is invalid or null. To do this

    :
    1. Download MTK droid tools
    2. Download PdaNet
    3. Enable USB debugging on the phone then connect it
    to the PC (don't enable mass storage)
    4. Install PdaNet on the PC with the phone
    connected; you should get a message saying drivers
    installed successfully.
    5. Extract then launch MTK droid tools on the PC
    (still with phone connected to PC)
    6. MTK droid tools should detect and display your
    phones details
    7. Click on IMEI/NVRAM
    8. Supply the IMEI(s) then click replace
    9. Restart your phone if it isn't automatically restarted
    10. Your IMEI issue should have been resolved

    NVRAM Restore Method

    * Note that you need a working phone of the same
    model to backup NVRAM first

    1. Download MTK droid tools
    2. Download PdaNet
    3. Enable USB debugging on the GOOD phone then
    connect it to the PC (don't enable mass storage)
    4. Install PdaNet on the PC with the phone
    connected; you should get a message saying drivers
    installed successfully.
    5. Extract then launch MTK droid tools on the PC
    (still with phone connected to PC)
    6. MTK droid tools should detect and display your
    phones details
    7. Click IMEI / NVRAM
    8. Click Backup
    9. When backup is complete, open the MTK Folder >
    BackupNVRAM to confirm that backup was successful
    8. Connect the phone with Basebrand / IMEI error
    to the PC still with MTK droid tools open
    9. Still under IMEI / NVRAM, click Restore
    10. Select the appropriate files from the windows that
    pop up
    11. Reboot the phone once the procedure is complete

    ENGINEERING MODE METHOD

    1. Download and Install Mobile Uncle then grant
    superuser permission
    2. Select Engineer mode
    3. Select Engineer mode (MTK)
    4. Navigate to the Connectivity tab
    5. Select CDS information
    3. Select Radio Information
    4. At Phone 1: Insert the command below then click
    Send at command

    Code:
    AT+EGMR=1,7,"IMEI1"

    5. At Phone 2: Insert the command below then click

    Send at command

    Code:
    AT+EGMR=1,10,"IMEI2"

    6. Go back to Mobile uncle home screen
    7. Click on Engineer Mode
    8. Select Engineer mode (Android)
    9, Select Phone information
    10. Click Turn on radio





    More Articles

    ADSENSE SCRIPT HERE

    Make use of Smilleys Codes

    Contact

    Oyo, Nigeria.

    08053151099

    [email protected]

    Mondays to Saturdays 09:00 - 18:00 (GMT +01:00)

    About

    Azeeztech is a Nigerian-based Tech. support platform where anybody can get free solutions to device issues & questions.

    Azeeztech

    Get notified on FB