Fix Samsung Galaxy unknown baseband version [ Guide ]

What happens when your Samsung Galaxy device is working perfectly fine and then suddenly the signals are gone, you can’t make calls, can’t send text and no matter how many times you perform factory restore but still nothing works at all. This all happens when you are facing unknown baseband version issue on your Samsung Galaxy device. In this following tutorial I will guide you to fix Samsung Galaxy unknown baseband version and this guide is not specifically for a single variant, you can perform all these steps on Samsung Galaxy S1, S2, S3, S4, Note 1, Note 2, Note 3, S4 and all other devices. Following are the main issue that have been reported till now.

fix unknown baseband version

Issue because of unknown baseband version:

  1. Unknown baseband version.
  2. Null IMEI. [ Click Here to See Solutions ]
  3. Not Registered on Network. [ Click Here to See Solutions ]
  4. Insert SIM Card to access the services. [ Click Here to See Solutions ]
  5. No network service. [ Click Here to See Solutions ]

Main Symptoms you will get when Baseband Version is Unknown:

Following are the symptoms that you will get when you are facing Unknown Baseband Version on your Samsung Galaxy. 

  1. Bluetooth address is unavailable
  2. WiFi connection will work inconsistent [ use this link in order to fix it ]
  3. Constantly rebooting
  4. Fake IMEI  or Null IMEI # use this link in order to fix it ]
  5. Null Serial number  use this link in order to fix it ]
  6. Unable to register to network  [ use this link in order to fix it ]

How to Fix Samsung Galaxy unknown baseband version [ All Variants ]:

Before starting the guide let me tell you why are you facing unknown baseband version, the main reason is that your EFS data folder is deleted or corrupted that contains your phone IMEI number. You can use our guides on backing up efs data folder.

Lets start the work !

Step 1: Learn how to backup and restore EFS DATA/IMEI ON SAMSUNG GALAXY.

Step 2: Make sure your device is rooted. [ How to root Samsung Galaxy ].

Step 3: Enable USB debugging by going to Settings >Developer Options>USB debugging “checked”.

Step 4: Now connect your device to Computer.

Step 5: Download  EFS Professional v2.0 .

Step 6: Extract the file and run efs.exe

Step 7: Now you’ll see a pop-up select EFS Professional.

Step 8: You’ll be promoted on next windows where you can see your device is connected and ready for the process.

Step 9: On the top of the window you’ll see tabs Welcome, Backup, restore, Qualcomm, Debug.

Step 10: Select backup form the tabs.

Step 11: After selecting the back you’ll be in backup section now. Select all the partition on left side, now click on Backup.

Step 12: Save the backup file of your Samsung Galaxy EFS data to the secure locations.

Step 13: It will take few minutes to backup the efs data folder.

Step 14: Once done go to Restore tab and select the backup file that you’ve saved before, click on restore to fix the Samsung Galaxy unknown baseband version.

FIX UNKNOWN BASEBAND VERSION USING EFS RESTORE EXPRESS:

Step 1: Enable USB debugging by going to Settings >Developer Options>USB debugging”checked”.

Step 2: Now connect your device to Computer.

Step 3: Download  EFS Restorer Express.

Step 4: Open the EFS restore express folder and run the EFS-BACKUP.BAT file.

Step 5: Now select restore the EFS via ODIN.

How to fix baseband version unknown on galaxy s2:

Step 1: Learn how to backup and restore EFS DATA/IMEI ON SAMSUNG GALAXY.

Step 2: Make sure your device is rooted. [ How to root Samsung Galaxy ].

Step 3: Enable USB debugging by going to Settings >Developer Options>USB debugging”checked”.

Step 4: Now connect your device to Computer.

Step 5: Download  EFS Professional v2.0 .

Step 6: Extract the file and run efs.exe

Step 7: Now you’ll see a pop-up select EFS Professional.

Step 8: You’ll be promoted on next windows where you see your device is connected and ready for the process.

Step 9: On the top of the window you’ll see tabs Welcome, Backup, restore, Qualcomm, Debug.

Step 10: Select backup form the tabs.

Step 11: After selecting the back you’ll be in backup section now. Select all the partition on left side, now click on Backup.

Step 12: Save the backup file of your Samsung Galaxy EFS data to the secure locations.

Step 13: It will take few minutes to backup the efs data folder.

Step 14: Once done go to Restore tab and select the backup file that you’ve saved before, click on restore to fix the Samsung Galaxy unknown baseband version.

How to fix baseband version unknown galaxy s3:

Step 1: Learn how to backup and restore EFS DATA/IMEI ON SAMSUNG GALAXY.

Step 2: Make sure your device is rooted. [ How to root Samsung Galaxy ].

Step 3: Enable USB debugging by going to Settings >Developer Options>USB debugging”checked”.

Step 4: Now connect your device to Computer.

Step 5: Download  EFS Professional v2.0 .

Step 6: Extract the file and run efs.exe

Step 7: Now you’ll see a pop-up select EFS Professional.

Step 8: You’ll be promoted on next windows where you see your device is connected and ready for the process.

Step 9: On the top of the window you’ll see tabs Welcome, Backup, restore, Qualcomm, Debug.

Step 10: Select backup form the tabs.

Step 11: After selecting the back you’ll be in backup section now. Select all the partition on left side, now click on Backup.

Step 12: Save the backup file of your Samsung Galaxy EFS data to the secure locations.

Step 13: It will take few minutes to backup the efs data folder.

Step 14: Once done go to Restore tab and select the backup file that you’ve saved before, click on restore to fix the Samsung Galaxy unknown baseband version.

How to fix baseband version unknown galaxy s4:

Step 1: Enable USB debugging by going to Settings >Developer Options>USB debugging”checked”.

Step 2: Now connect your device to Computer.

Step 3 : Download  EFS Restorer Express.

Step 4: Open the EFS restore express folder and run the EFS-BACKUP.BAT file.

Step 5: Now select restore the EFS via ODIN.

You can also use the method 1 on Samsung Galaxy S4.

How to fix baseband version unknown galaxy s5:

Step 1: Learn how to backup and restore EFS DATA/IMEI ON SAMSUNG GALAXY.

Step 2: Make sure your device is rooted. [ How to root Samsung Galaxy ].

Step 3: Enable USB debugging by going to Settings >Developer Options>USB debugging”checked”.

Step 4: Now connect your device to Computer.

Step 5: Download  EFS Professional v2.0 .

Step 6: Extract the file and run efs.exe

Step 7: Now you’ll see a pop-up select EFS Professional.

Step 8: You’ll be promoted on next windows where you see your device is connected and ready for the process.

Step 9: On the top of the window you’ll see tabs Welcome, Backup, restore, Qualcomm, Debug.

Step 10: Select backup form the tabs.

Step 11: After selecting the back you’ll be in backup section now. Select all the partition on left side, now click on Backup.

Step 12: Save the backup file of your Samsung Galaxy EFS data to the secure locations.

Step 13: It will take few minutes to backup the efs data folder.

Step 14: Once done go to Restore tab and select the backup file that you’ve saved before, click on restore to fix the Samsung Galaxy unknown baseband version.


Ali Raza

Admin at Techbeasts
On Techbeasts, +Ali Raza shares his experiences about the Gadgets he uses, He loves to collect different wallpapers for his Android, Apple smartphones and his laptops, so he also brings you the best wallpapers for your devices.
  • ajayk

    hi alll……..my problem is that efs folder is already deleted then how can i recover baseband version……..plz help

  • DBGT

    Baseband version is unknown, imei is null/null …. how to know which stock rom to flash!

  • likeson

    On How To Switch off ftm it says NOT SUPPORTED

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