How to Fix MISSING BASEBAND / CORRUPTED NVRAM

itxtutor

Editor in Chief
Staff member
May 15, 2015
60,104
471
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#1
Hey guys, one user here had a serious problem with his baseband, so i decided to put this guide up here.


the Baseband (radio) is controlled by the NVRAM which you can find in data/nvram/md/NVRAM/NVD_IMEI and a file called MP0B_001.


If this file is corrupted / Missing, your IMEI will be gone and you cant connect anymore.


Here are some fixes you should try in this order:





MP0B_001 Method


1. Download ES file explorer from Playstore. make sure you are rooted!!!


2. Download IMEI.ZIP then unzip the content of the folder (imei.exe) to a folder on your desktop


3. Hold shift + Right click in the folder and open press "Open Command Window here"


5. When you're inside the imei folder in command prompt, type


imei.exe


( like 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 copy it to the root of your SD card.


9. In ES 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 6 boxes the select ok


12. Restart your phone


It should work with your sim card now



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


If none of those method work for you, you should maybe restore with a stock rom after a clean format in SP-flashtools.
 

Kikaa99

New Member
Feb 9, 2015
13
1
3
38
#3
Man , I confuse about imei 1 and imei 2 ?? At my phone (Lenovo A850) only imei 15 digit appear ??? imei 2 ummm ??? Can you tell me please .
 
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mrsim

KingOfNoobs
Staff member
Mar 1, 2014
16,207
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London UK
#5
Man , I confuse about imei 1 and imei 2 ?? At my phone (Lenovo A850) only imei 15 digit appear ??? imei 2 ummm ??? Can you tell me please .
are your imei's not under the battery in the back of the device,or on a sticker in the box that the device came with
 

Kikaa99

New Member
Feb 9, 2015
13
1
3
38
#6
IT only display imei (15digit ) no imei 2 ?? ummm 



Update : You know about my phone now Mrsim (Lenovo A850) PROBLEM NOW HAPPEN is :


1)NVRAM WARNING ERR = 0X10


2) IMEI INVALID


YOU ALL HELP ME PLEASE !!!!


Update 2 : My wifi cannot connect (the problem is wifi authentication)


PLEASE HELP ME ALL ADMIN PLEASE 



THANKS IN ADVANCE
 
Last edited by a moderator:

mrsim

KingOfNoobs
Staff member
Mar 1, 2014
16,207
2,366
113
47
London UK
#8
IT only display imei (15digit ) no imei 2 ?? ummm 



Update : You know about my phone now Mrsim (Lenovo A850) PROBLEM NOW HAPPEN is :


1)NVRAM WARNING ERR = 0X10


2) IMEI INVALID


YOU ALL HELP ME PLEASE !!!!


Update 2 : My wifi cannot connect (the problem is wifi authentication)


PLEASE HELP ME ALL ADMIN PLEASE 



THANKS IN ADVANCE
NVRAM warning sounds like corrupted or broken NVRAM,if you have followed the tutorial above and it still is not working then you will have to wait for a reply from admin,(itxtutor),send him a PM with a link to this thread and see if he can help you
 

Kikaa99

New Member
Feb 9, 2015
13
1
3
38
#9
now what should i do now ???


My time now is 10:34pm


I willl meet you tomorrow.


one more things before i offline : i have only 1 imei so where i want to get imei 2 ??


Why My wifi have
 
Last edited by a moderator:

mrsim

KingOfNoobs
Staff member
Mar 1, 2014
16,207
2,366
113
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London UK
#10
just subscribe to this thread and wait for a reply from itxtutor...that's all you can do,unless you want to try the tutorial for fixing it again in the first post of this thread
 

Kikaa99

New Member
Feb 9, 2015
13
1
3
38
#11
just subscribe to this thread and wait for a reply from itxtutor...that's all you can do,unless you want to try the tutorial for fixing it again in the first post of this thread
I will wait untill big admin coming OK


ANYWAY SEE YA!!!!


 

itxtutor

Editor in Chief
Staff member
May 15, 2015
60,104
471
113
#12
sorry bro i got way to much work and not really much time to check out all thread.


its a dual sim ? otherwise you will just have 1 IMEI.


FIx here :



regarding NVRAM message , do you have nvram backup ?
 
Likes: Multisam

Kikaa99

New Member
Feb 9, 2015
13
1
3
38
#13
sorry man i dont have nvram backup


Update : My wifi now can connect . No authentication problem 


Your tutorial is useful and working BUT NOT PERMANENT 


after flashing stock rom the invalid imei is back and appear.


So hope you have a solution to my problem .


ANYWAY!!SEE YA !!!
 
Last edited by a moderator:

mrsim

KingOfNoobs
Staff member
Mar 1, 2014
16,207
2,366
113
47
London UK
#15
Come one admin this problem is annoying .
dude admin is working on the forum right now,if you have an invalid IMEI then you are going to have to create a new IMEI from an older non android device...do you have an older device lying around,or maybe an android device that you do not use anymore
 

Kikaa99

New Member
Feb 9, 2015
13
1
3
38
#16
ok man sorry  


1) i dont have any nvram backup


2) imei is not permannet . AFTER FLASHING STOCK ROM INVALID IMEI APPEAR BACK . 
 
Last edited by a moderator:

mrsim

KingOfNoobs
Staff member
Mar 1, 2014
16,207
2,366
113
47
London UK
#17
ok man sorry  


1) i dont have any nvram backup


2) imei is not permannet . AFTER FLASHING STOCK ROM INVALID IMEI APPEAR BACK . 
did you try any of these methods to restore it


 


http://www.china-devices.com/Thread-Restore-IMEI-with-MTK-Mobileuncle-Toolbox


 


http://www.china-devices.com/Thread-IMEI-Repairing-if-Command-doesnt-work
 

Kikaa99

New Member
Feb 9, 2015
13
1
3
38
#18
did you try any of these methods to restore it


 


http://www.china-devices.com/Thread-Restore-IMEI-with-MTK-Mobileuncle-Toolbox


 


http://www.china-devices.com/Thread-IMEI-Repairing-if-Command-doesnt-work
Thanks my imei is fixed. :DD


Now to fix NVRAM WARNING IN WIFI MENU. :cool: