Is corrupted IMEI GS2 not fixable? - Galaxy S II Q&A, Help & Troubleshooting

Ok guys! This is simple, i bought this GS2 from a friend a couple days ago. He told me the phone had no IMEI and since i have seen this before on other Galaxy S variations and have been able to fix it i thought it was a good buy. Thing is i didnt realize how hard it was going to be to fix that. He tried to unlock that phone who knows how and it completely messed up the efs folder. I have tried the 9 step Imei restore method and some other tricks with no luck. Problem with this phone is that it doesnt even have a dummie imei number. In fact, not even zeros, just nothing when i try to check for an imei number. Any suggestions for this. Or should i just look for someone to buy the lcd and dump the motherboard to the trash?? Thanks!

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Without a backup of the original, working EFS folder you are probably more or less stuck. I've been in the same situation before and ended up having to get the phone replaced.

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Contact a member on here called Odia via PM. He is sometimes able to recover IMEI's/EFS details when everything else has failed (for a small donation). If everything else you've tried hasn't worked, that's probably your last chance.

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Yep odia said corrupt efs was no problem to fix.
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GTI9100 LP8

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I'm facing this as well: imei blank, no baseband, stuck on flight mode. I've tried everything, no luck. I'm fixing it for a friend, would be nice to come with some results up!

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[email protected] said:
I'm facing this as well: imei blank, no baseband, stuck on flight mode. I've tried everything, no luck. I'm fixing it for a friend, would be nice to come with some results up!
Click to expand...
Click to collapse
Results/methods are as posted above for those that have no EFS backup .
jje

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enelyam said:
Ok guys! This is simple, i bought this GS2 from a friend a couple days ago. He told me the phone had no IMEI and since i have seen this before on other Galaxy S variations and have been able to fix it i thought it was a good buy. Thing is i didnt realize how hard it was going to be to fix that. He tried to unlock that phone who knows how and it completely messed up the efs folder. I have tried the 9 step Imei restore method and some other tricks with no luck. Problem with this phone is that it doesnt even have a dummie imei number. In fact, not even zeros, just nothing when i try to check for an imei number. Any suggestions for this. Or should i just look for someone to buy the lcd and dump the motherboard to the trash?? Thanks!
Click to expand...
Click to collapse
Here's the only fix I know of for a galaxy s2: http://www.youtube.com/watch?v=iY9cDkj4CCw! If it works, make sure to make multiple backups of your efs folder on sd card/pc/drop box etc!!
You can view your efs folder using the Root explorer app!!
Here's the download link for the galaxy s2 kTool fix: https://play.google.com/store/apps/details?id=net.hellcat.droiddev.ktool&hl=en Good luck!
If all else fails, your only other option is here: http://mobiletechvideos.mybigcommerce.com/samsung-galaxy-s-ii-imei-efs-repair/

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You can try to fix the efs partition following this guide : forum.samdroid.net/f70/repair-imei-s2-5729/
You'll probably get a generic IMEI after that, then contact the guy he will set back your original IMEI. I had exacly the same problem and it worked !

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Wow guys thanks a lot for all those replies! Ill keep in touch and tell you how it goes!

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Thank for your help jje, I've tried many methods but none of them seem to be working. (Done factory reset, installed CWM recovery, wiped caches, adb shell) I've a feeling that this phone needs a main board as well. He's got insurance for his phone so at this point, I think, it's not worth the hassle anymore.
JJEgan said:
Results/methods are as posted above for those that have no EFS backup .
jje
Click to expand...
Click to collapse

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[email protected], even changing almost any galaxy S lcd is not worth it when it breaks. Have you seen the prices of those lcd replacement screens? We do it for the sake of learning. Although in this case you might be right, because just like your phone this one doesnt even have a baseband showing. But still im pretty shure its a software and not hardware issue. This is about something that went really wrong while unlocking or trying to do something like that with it. Too bad i dont even know what happened with this one. No efs backup or anything

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What actually happened is my friend went into this badly network covered area, lost the signal and he was back to a place again, where is a strong network coverage the phone just would not log on and stuck in flight mode.

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So my s2 was on gingerbread rom and I decided to flash 4.1.2 via odin. Phone booted up and asks for sim unlock code. I learnt then that it locked the phone. I used Galaxy_S unlock https://play.google.com/store/apps/...sMSwxLDEsImNvbS5oZWxyb3ouZ2FsYXh5c3VubG9jayJd
but it didn't work so I restored the efs. Then I tried this Galaxsim http://forum.xda-developers.com/showthread.php?t=1846451 and it says unlocked so rebooted phone but when making or receiving phone calls, it disconnects. The paid version from play I havent tried but Im guessing will be the same?
Imei still shows so Im not sure what I have done wrong.
I have efs backup from both of those apps and also a efs.autobackup in the root of internal storage date in January. Not sure how that got there as this phone had GB over a year.
Please help

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Do you get any signal at all?
The paid version won't help as this could be a modem issue.
Sent from the little guy

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gastonw said:
Do you get any signal at all?
The paid version won't help as this could be a modem issue.
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Click to collapse
Yes there is signal, data connection works. I then tried reflashing GB, restored GB backup, flashed ICS and same problem