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


(10-30-2014, 03:38 PM)jdfm Wrote: hello boss...please i need stock rom for tecno n9 so i can fix this unknown baseband/invalid imei and sim not detected - please help

Please request @ http://forum.hovatek.com/thread-311.html


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i have zen ultrafone 701hd
i rooted it and installed cwm and paritioned ext sd card
installed link2sd to increase internal storage
after all of this the phone doesnt detect any sim card
i have flashed stock rom with sp tools but no good
i have a good imei and baseband
what do i do? plz help
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(11-02-2014, 03:33 PM)sunnyvarma Wrote: i have zen ultrafone 701hd
i rooted it and installed cwm and paritioned ext sd card
installed link2sd to increase internal storage
after all of this the phone doesnt detect any sim card
i have flashed stock rom with sp tools but no good
i have a good imei and baseband
what do i do? plz help

please create a new thread for this by clicking. http://forum.hovatek.com/newthread.php?fid=4
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hovatek Wrote:Quite a number of Tecno users have been having this issue on their Tecno 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:

*Note: For Samsung phones,  use this method @ http://forum.hovatek.com/showthread.php?tid=310

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)
          cd.. enter (goes up one directory)
          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: 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 6 boxes the select ok
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

Stock ROM Method

1. Reflash the Clockworkmod backup or Factory ROM of the phone (see
Collection of Tecno Stock ROM (Clockworkmod / MTK) Backups for most Tecno phones )
2. Still in recovery mode, wipe data / factory reset
3. Wipe cache
4. Reboot the phone

# See the video tutorial below or @ http://youtu.be/tAK1DL_L_eg 




I AM NOT ABLE TO USE 1 ST METHOD
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(11-18-2014, 08:26 AM)aniket Wrote: I AM NOT ABLE TO USE 1 ST METHOD

what type of phone and what error did you get?
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Heyy something wrong i cant download the droidtools it says invalid url
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(12-20-2014, 01:56 PM)Iroboy Wrote: Heyy something wrong i cant download the droidtools it says invalid url

link works just fine. can I have the url to the page where this broken link is
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Heeeeeeeelp! I have an Innjoo 1ls phone (Media Tek MTK6582). I tried changing the IMEI of SIM 2 using MTK Engineering Tool downloaded from Play Store and the radio (network) went off. That of SIM one is still working though. I tried the methods stipulated on Page 1 (apart from using the PDAnetA4170.exe file which my Norton 360 Anti-Virus reported as a trojan and removed). I have still not been able to succeed. Help is urgently needed here to turn on the radio of SIM 2. I used Mobile Uncle>Engineering Mode>Android>Phone Information>but could not click the "Turn on radio" button as it was offline.
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(01-12-2015, 11:18 PM)versuskasparov Wrote: Heeeeeeeelp! I have an Innjoo 1ls phone (Media Tek MTK6582). I tried changing the IMEI of SIM 2 using MTK Engineering Tool downloaded from Play Store and the radio (network) went off. That of SIM one is still working though. I tried the methods stipulated on Page 1 (apart from using the PDAnetA4170.exe file which my Norton 360 Anti-Virus reported as a trojan and removed). I have still not been able to succeed. Help is urgently needed here to turn on the radio of SIM 2. I used Mobile Uncle>Engineering Mode>Android>Phone Information>but could not click the "Turn on radio" button as it was offline.

please, create a new thread for this by clicking https://forum.hovatek.com/newthread.php?fid=4
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http://chinagadgetsreviews.blogspot.ro/2...iatek.html

Hello everyone, this method really fixed my problem with my phone
Mediatek MT6295. I was having problem about IMEI not valid `cause I flashed my phone with out making a backup first. so, that means I lost my efs folder with IMEI.
Hope could be usefull for those who has the same problem.
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