another Imei lost problem - Galaxy S II Q&A, Help & Troubleshooting

Hi guys, I know this is an another post on the same problem, but I follow all trhead on this argument without result.
I have an samsung galaxy s2 whit null emai. I lost it! But I have an old backup of EFS (I thinks it is corrupt because if I restore it, does not change anything )
I tried to restore whitouth success from this backup
I tried factory restore
I tried to recreate the EFS folder whit your two guides
I tried to flash the original firmware from odin whit auto reboot - repartition - F. reset time (I use the file from original firmware but I do not get even a generic imei, it stay null)
I don't know what I can do, and I can't pay 100$ for jtag box only for re enter my own emai
I have another samsung galaxy s2 where the software working (my sister's phone) but has hardware problems. Can I make a full dump of rom and pass it in my phone?
there is a way?
P.S. sorry for my bad english.

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updating: I tried to put the EFS folder from my sister's phone to mine but the imei still remains null.
P.S. Sorry for the wrong section

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Trying to put the EFS folder from another phone into yours will never work, and changing the IMEI is illegal in most places anyway if you use a particular piece of hardware that mobile repair shops/Samsung authorised repairers use to 'write' the IMEI back to the phone if you bork it.
If you don't have a good EFS backup, it's a service centre job normally, but there are quite a few threads on here which claim to be able to fix it. You might want to look at those; I can see you've obviously tried some things, unless you want to take it in to be repaired, keep trying stuff.
I don't recommend you try to fix this yourself with a JTAG box/similar for two reasons:-
1) You'll be paying for something you'll never use again
2) If you mess it up, it will be a service centre job anyway (or if you slip with the soldering iron, you could damage the phone beyond repair) which you'll pay for plus the cost of the box which you'll never user again.
So take it to someone who knows what they're doing.
No. Trying to copy details from another phone will not fix the problem because the IMEI is a unique hardware identifier which is assigned to the particular radio in your phone.

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Same here!
I purchased this phone from a eBay seller and had it shipped to India. Didn't compare IMEI with the one under the battery (stupid, I know) when opening the package, or before flashing to JB firmware. Next thing I know, phone calls are not going and emergency calls only available, even though data network is working fine.
What I did after that (no particular order):
1. Flashed with stock GB, ICS and JB
2. Rooted
3. Tried fixing by steps in http://forum.xda-developers.com/showthread.php?t=1264021&highlight=recovery+IMEI
4. Tried fixing using SGII_Repair
5. Tried fixing using HC-kTool
All failed!
Next option looks like buying a SRS licence and changing IMEI to what is there under the battery. Would this work safely, and restore order to normal in phone? Anyone!! Phone is perfectly new, no signs of use, so assume that I was shipped a proper piece.

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MistahBungle said:
Trying to put the EFS folder from another phone into yours will never work, and changing the IMEI is illegal in most places anyway if you use a particular piece of hardware that mobile repair shops/Samsung authorised repairers use to 'write' the IMEI back to the phone if you bork it.
If you don't have a good EFS backup, it's a service centre job normally, but there are quite a few threads on here which claim to be able to fix it. You might want to look at those; I can see you've obviously tried some things, unless you want to take it in to be repaired, keep trying stuff.
I don't recommend you try to fix this yourself with a JTAG box/similar for two reasons:-
1) You'll be paying for something you'll never use again
2) If you mess it up, it will be a service centre job anyway (or if you slip with the soldering iron, you could damage the phone beyond repair) which you'll pay for plus the cost of the box which you'll never user again.
So take it to someone who knows what they're doing.
No. Trying to copy details from another phone will not fix the problem because the IMEI is a unique hardware identifier which is assigned to the particular radio in your phone.
Click to expand...
Click to collapse
No no, I do not want to change imei! I want to put my imei xD and I think this is not illegal, I tried with my sister's efs only for using an clean EFS folder where I can work, I know all EFS are proprietary for each device.
Anyway the soldering are not a problem, but I agree with first point.
I have another question, on GT-I9100 whitouth imei is possible to put the usb in qualcomm mode? i tried with
su -c 'am start -n com.sec.android.app.phoneutil/com.sec.android.app.phoneutil.USBSettings'
Click to expand...
Click to collapse
but this has generated an error:
Activity class {com.sec.android.app.phoneutil/com.sec.android.app.phoneutil.USBSettings} does not exist
Click to expand...
Click to collapse
obviously the telephon is rooted and have su permess and busybox
is there another method?
@diffuser911 Unfortunately, I tried the same as you without success :\ Can you enter in qualcomm mode? perhaps you can solve with NV tool (it is in EFS PRO)...I dunno

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[email protected] said:
No no, I do not want to change imei! I want to put my imei xD and I think this is not illegal, I tried with my sister's efs only for using an clean EFS folder where I can work, I know all EFS are proprietary for each device.
@diffuser911 Unfortunately, I tried the same as you without success :\ Can you enter in qualcomm mode? perhaps with NV tool (it is in EFS PRO) you can solve...I dunno
Click to expand...
Click to collapse
Can't say I could :silly: I am quite dumb when it comes to android stuff. Which one did you try, SRS server IMEI repair? I have another guy who claims he can fix the phone over the internet for 10 EUR, google for cvxcvx, Polish site.
Have contacted him, awaiting repsonse.:fingers-crossed:

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diffuser911 said:
Can't say I could :silly: I am quite dumb when it comes to android stuff. Which one did you try, SRS server IMEI repair? I have another guy who claims he can fix the phone over the internet for 10 EUR, google for cvxcvx, Polish site.
Have contacted him, awaiting repsonse.:fingers-crossed:
Click to expand...
Click to collapse
No I didn't try because in the tutorial they refer to phones with a generic imei and mine have empty imei, I would not waste money if the software don't work.
I hope you solve .
I wanted to try the tool of @lyriquidperfection here: http://forum.xda-developers.com/showthread.php?t=1308546
But I have not found a way to get qualcomm mode

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diffuser911 said:
Can't say I could :silly: I am quite dumb when it comes to android stuff. Which one did you try, SRS server IMEI repair? I have another guy who claims he can fix the phone over the internet for 10 EUR, google for cvxcvx, Polish site.
Have contacted him, awaiting repsonse.:fingers-crossed:
Click to expand...
Click to collapse
Hi diffuser911, Did You solve with cvxcvx?

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[email protected] said:
Hi diffuser911, Did You solve with cvxcvx?
Click to expand...
Click to collapse
That guy isn't too responsive. Asked him to check if system is accessible via the tools he recommended, he wouldn't budge beyond payment. I am thinking of going the SRS Server way.