Q&A from the article:

Fix Network Problems In Samsung Galaxy S2 Korean Version

Edited by Anonymous, Maria, Dougie-1, Minkir and 11 others

Questions and Answers

Fix my S2 GT-i9100 phone Baseband version?

Hi My Phone is SGS2 GT-I9100, I want to fix, Baseband version is Unknown. and IMEI is NULL/NULL. Please help me

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Here is the quick fix that you need for your Samsung Galaxy S2 GT-I9100 with unknown baseband version and null IMEI:

  • First off, make sure that your phone is rooted and switched to "Airplane Mode".
  • Open your phone.
  • Go to Settings >> Application >> Development >> check USB Debugging option.
  • Connect USB cable to your phone in order to install the necessary drivers.
  • Remove the USB Cable and the wait for your phone to completely power up.
  • Insert the UART cable to your device.

This will now get your baseband version up and running.

See more questions like this: How to get firmware for my S2?

How can I restore IMEI and baseband lost in Samsung i9100?

Hi, I'm a student in formation about smart phone, I have an i9100, me and my friend have flashed phone * 6, then the IMEI is null

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  1. 1
    Make sure that the ROM installed is not corrupted.
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  2. 2
    Root your phone with this toolkit.
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  3. 3
    Look for a GSII_repair app and it will need.
    root aka superuser access so make sure that is enabled.
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  4. 4
    Repair the EFS files using your GSII app.
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  5. 5
    Look again for a Galaxy S unlock app and follow the steps listed for that app.
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  6. 6
    Your phone should work again.
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See more questions like this: Lost IMEI in Samsung Galaxy S II

Convert shw-m250k to GT-I9100 with jellybean ROM?

Please help me convert shw-m250k to GT-I9100 with jellybean ROM

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This Youtube Tutorial shows you how to convert the shw-m250 l to GT-I19100. Make sure your phone is fully charged before attempting this.

How can I fix the unknown baseband problem?

My S2 does not read my SIM card

Follow the steps in the above answers.

The above questions are from the following wiki...
Fix Network Problems In Samsung Galaxy S2 Korean Version

More questions and answers

See more questions like this: How to fix unknown baseband version

How to fix my Galaxy S2 4G LTE Korean with no signal?

IMEI 0 and cannot call and cannot use the internet

You have to fix your baseband with the steps posted in the above answers. Check to make sure that you are not in Airplane Mode which is found in Settings if this happened suddenly then you are probably in Airplane Mode.

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Can you please help me to repair IMEI on i9100?

How can l repair my IMEI and baseband on Samsung i9100

Use the toolkit method posted in the above answer. This is the best way to repair your baseband and IMEI.

See more questions like this: I have a Samsung I9100. After performing a new root the IMEI number is null

My question is regarding unknown base band version and unknown IMEI. My phone model is Samsung Galaxy S2 (SHW-M250K). Please help me to resolve this?

My question is regarding unknown base band version and unknown IMEI. My phone model is Samsung Galaxy S2 (SHW-M250K). Please help me to resolve this.

You can fix your Galaxy S2 by installing Custom Stock ROM and then following the steps above in the answers using the toolkit.

See more questions like this: How to repair my S2 was stuck in the flight mode & the baseband version is unknown

How to fix baseband unknown and null IMEI of Galaxy note n7000?

It is showing round dot on network and baseband is unknown and the IMEI is null...network is not working

Is your Galaxy Note in Airplane Mode? If not then you need to install Custom ROM and follow the toolkit steps in the above answer.

See more questions like this: How to fix baseband unknown error of note n7000 India?

Please, how can I rewrite my IMEI on my GTI9100?

I have a fake IMEI and I can't repair it, I want to write my IMEI that is labeled at the back of the phone

You need to repair your EFS files as suggested in the above answer using the toolkit.

My Galaxy S2 is showing null/null when I key in *#06# in dialer?

IMEI number issue, will you please help me

  1. 1
    Dial *#197328640# or *#*#197328640#*#* on your phone like you did the *#06#.
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  2. 2
    This will bring you into the Command mode.
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  3. 3
    Select Common.
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  4. 4
    Choose (FTM) Field Test Mode and turn it OFF if it is on.
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  5. 5
    The NULL or altered IMEI number will be restored.
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  6. 6
    If you still are without an IMEI, go back to the Command screen and press the Menu key.
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  7. 7
    Select Key input and enter the option 2 which will turn your FTM OFF again.
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  8. 8
    Remove your battery and SIM card for two minutes, then place your battery in your phone but not the SIM card.
    #Turn on the device.
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  9. 9
    Once the phone boots, enter the command mode again of *#197328640#.
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  10. 10
    Choose the Debug Screen.
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  11. 11
    Then phone control.
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  12. 12
    Select NAS control.
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  13. 13
    Click RRC (HSDPA).
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  14. 14
    Choose RRC revision.
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  15. 15
    Select Option 5 (HSDPA only).
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  16. 16
    Turn off your phone and insert your SIM card.
    Check to see if your IMEI is restored now.
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Samsung S2 GT-I9100 null IMEI and unable to restore original IMEI number in EFS?

Hi, I have trawled the internet for a fix, many sites tried explaining a fix however only very dodgy. This is a friends device which I have managed to recover to carrier version, but seems EFS folder is still corrupt. Do you have a reliable source for 'rooting and super user' for this device, then a decent EFS reader? Thanks

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Download a toolkit and on the rooted phone, use EFS PRO app to restore the corrupted files.

See more questions like this: Samsung Galaxy SII GT-I9100, insert SIM problem and no network problem

How to fix IMEI, my problem is that the network won't appear, I have tried several ways but still it can't fix?

My problem is that the network won't appear, I have tried several ways but still it can't fix

Install a Custom ROM if nothing else is working. You still may need to use the toolkit method to repair or the dial method to assign the IMEI again.

Is there a I9100 baseband that supports IPv4/v6 dual stack?

T-Mobile in Germany released an APN setting for IPv4/6 dual stack support. It works well on my S5 but not on my S2. I am wondering if this is an issue of the baseband installed (I9100XXLS8). I have tried: Upgrade from CM11 to 12.1

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APN works for IPv4 only, but not for dual stack or IPv6 only. I think it was caused by: Baseband?

Follow the toolkit method posted above. This should fix the baseband of the Galaxy S2.

Galaxy S2 i9210 no baseband or IMEI?

Trying follow step 9 http://visihow.com/Fix_Network_Problems_In_Samsung_Galaxy_S2_Korean_Version. but am having problems understanding. step 8 - Open the CDM (command prompt) on your PC and go to the unzipped adb. Does that mean open an admin command prompt and go to efsfix folder and type "adb push keystr /efs/IMEI". That just gives me an error:device not found, despite, after typing "adb devices" into command prompt, both phone drive G and H showing up - with mount /efs" being done using TWRP. Does Open CDM mean something else?

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Fix your EFS because it is being shows as corrupted. You can find how to do this in the above answers.

Can an update of Android 4 to 5 be reverted?

Actually I have updated Android version 4 to 5 of my Samsung Galaxy S2.

It can be reverted but can also cause numerous problems such as those posted in the above answer. First, why do you not like the newest version because things like battery draining faster can easily be corrected. Try to determine what you are not liking and set up that newest version to your preferences.

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What prompts exactly do I follow?

After downloading GSII from Play Store, what instructions do I follow. I am a bit confused. I see 4 steps but only 3 of them are numbered so should I go on and also click the fourth unnumbered step?

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My problem is my telephone dose not read SIM card?

My problem is my telephone dose not read SIM card

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Categories : Samsung Galaxy

Recent edits by: sanzalone, mickyngailo007, Eng

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