Develop Bugs

Missing IMEI and EFS files. Can you help?

Hello everybody!
I read for a several days about my problem. My IMEI is missing (*#06# shows only 000000000-oes). I never made a backup of the /efs folder, and there is NO any original bin or​ bak files.
I tried several methods for repairing the IMEI, but without success.
I tried to copy other nv_data.bin file into the /efs folder, but after reboot (or removing the battery) the file is missing.
My question is - Is it possible to get needed files form other owner of such phone? Have in mind - I'don't know the original IMEI of the phone too. This phone was a gift to me from my employer and I never get a original box (where the IMEI should be written).
So the situation is:
1. I have not original IMEI
2. I have not bin files or bak files in /efs folder
3. The phone is rooted, and etc.
Any suggestions?

Try flashing the stock rom using odin. I got this problem once with my Galaxy S and that was the only solution that worked.
Sent from my GT-I8150 using xda app-developers app

veenone said:
Try flashing the stock rom using odin. I got this problem once with my Galaxy S and that was the only solution that worked.
Click to expand...
Click to collapse
I already did it ( without result. In fact flashing with stock EU rom take my phone to cyclic reboot. The Android OS can't load at full - loading styas at white characters (Samsung Galaxy W) and after 1-2 minutes it restarts again.
I tried several flashes with ODIN, finally I used ASIAN version of the stock ROM and the phone now is running. Thanks God!
If there is no other suggestions I can try again to flash stock rom. Please can you provide me some links? I think I used links to the stock rom, given in that forum but... if you tried and tested some, I'll be very appreciated.

The IMEI is also written on the sticker on the mainboard under the battery. Not sure it will help you that much though, if you also lost the other /efs files. Good luck though.

bigstoyan said:
I already did it ( without result. In fact flashing with stock EU rom take my phone to cyclic reboot. The Android OS can't load at full - loading styas at white characters (Samsung Galaxy W) and after 1-2 minutes it restarts again.
I tried several flashes with ODIN, finally I used ASIAN version of the stock ROM and the phone now is running. Thanks God!
If there is no other suggestions I can try again to flash stock rom. Please can you provide me some links? I think I used links to the stock rom, given in that forum but... if you tried and tested some, I'll be very appreciated.
Click to expand...
Click to collapse
Maybe you can check out http://samfirmware.com/
They have very wide range of firmware collections for samsung phones.
I got my firmwares from there since a couple of years ago.
Just go to galaxy w category
Sent from my GT-I8150 using xda app-developers app

this link may help.. there's many cases that the IMEI lost.. next time search before posting
http://forum.xda-developers.com/showthread.php?t=1264021

IvanKurnia said:
this link may help.. there's many cases that the IMEI lost.. next time search before posting
http://forum.xda-developers.com/showthread.php?t=1264021
Click to expand...
Click to collapse
Believe me... that was the first post I ever read ( - it didn't help...
Never-mind... I already give the phone to service specialist who have JTAG and box for repair.
Thank you everybody!

IMEI Null

Been working at it all day , last night it just went caput and decided my sim does not recognised nor any signal. Been looking on the forum and I think I've tried every method I can find still no help.
Been using it for almost 3 weeks with Omega Rom and has been fine... never touched the efs part until it went haywire lol..
Nor have I backup the efs part (yes stupid me).... i have like a 2mb file nv_data.bin but whether that is corrupted or not I aint too sure. Though IMEI only has a mps_code.dat file.
what to do guys , what to do ?

BlkR said:
Been working at it all day , last night it just went caput and decided my sim does not recognised nor any signal. Been looking on the forum and I think I've tried every method I can find still no help.
Been using it for almost 3 weeks with Omega Rom and has been fine... never touched the efs part until it went haywire lol..
Nor have I backup the efs part (yes stupid me).... i have like a 2mb file nv_data.bin but whether that is corrupted or not I aint too sure. Though IMEI only has a mps_code.dat file.
what to do guys , what to do ?
Click to expand...
Click to collapse
Take a look at this http://forum.xda-developers.com/showthread.php?t=1804117, might help you. More threads available about restoring imei on XDA. Good luck mate :fingers-crossed:

hmmm i wonder how do i connect to the com port ..... keeps connecting to usb port

BlkR said:
hmmm i wonder how do i connect to the com port ..... keeps connecting to usb port
Click to expand...
Click to collapse
what provider are you using??

Three Australia.....seems my efs has been corrupted......

BlkR said:
Three Australia.....seems my efs has been corrupted......
Click to expand...
Click to collapse
flash official software on it. then try triangle away to remove the custom flash count.
Then bring it to samsung for warranty. It worked for me and samsung replaced the unit.

problem is, here in Aus note 2 hasnt been released yet... and my phone came from saudi arabia lol

[Q] EFS backup restores but still get Not registered on network[

Hello all,
I have a Samsung Note 2 GT-N7100 Ver International
Using the N7100 backup and restore tool for windows made two backups and saved them successfully. I put N7100_Omega_17_XXDME6.zip Rom. using Clockwork recovery.
After installation i found that i kept on getting Not registered on network ERROR. I checked the imei and still corresponded with the one on the back of the phone. I then went to N7100 backup and restore tool and proceeded to restore. After restore completed i restarted my phone but i am still gettting Not registered on network
Restore EFS
Press any key to continue . . .
--- STARTING ----
--- WAITING FOR DEVICE
--- Restore efs image ---
2696 KB/s (20971520 bytes in 7.595s)
5120+0 records in
5120+0 records out
20971520 bytes transferred in 0.166 secs (126334457 bytes/sec)
Press any key to continue . . .
I have tried Ktools but the app said it does not know what phone i am using.
I am using windows 8
Kies 2.0
Galaxy Note 2 tool kit
Odin307
Does anyone have any ideas?

There's a lot of contributing factors that might cause this eg. Sim Card IC, ROM compatibility, Modem Issue and so on.
Try go to setting / more settings / mobile networks / networks mode and set to GSM only. Wait for two mins or restart the phone.

This looks like modem problem. Try to flash another modem, better via odin from pc
Sent from my GT-N7100 using Tapatalk 2

vagsvag said:
This looks like modem problem. Try to flash another modem, better via odin from pc
Sent from my GT-N7100 using Tapatalk 2
Click to expand...
Click to collapse
What modem do you recommend ?
Also the there isn't any files in my efs folder after flashing the original stock rom but the imei is still there? wen't to restore efs worked but same problem no information in the efs folder? Is that even possible?

ahkiongkc said:
There's a lot of contributing factors that might cause this eg. Sim Card IC, ROM compatibility, Modem Issue and so on.
Try go to setting / more settings / mobile networks / networks mode and set to GSM only. Wait for two mins or restart the phone.
Click to expand...
Click to collapse
Sorry didn't work. Said the same message.

I was just thinking is there away to extract the files from the efs.img and manually paste it in to the efs folder? because every time i do a restore root explore shows no files in the folder? this is after flashing a new stock rom?

swoney said:
What modem do you recommend ?
Also the there isn't any files in my efs folder after flashing the original stock rom but the imei is still there? wen't to restore efs worked but same problem no information in the efs folder? Is that even possible?
Click to expand...
Click to collapse
Flashed it with a stock Gt-N7100 Modem still same problem?

Here is how i fixed it
Thanks for everyones help
This is how i fixed it
I placed the efs.img in a zip file called "EFS-CWM-flasher.zip" theen i flashed it with "CMWRecovery" then download 'Ariza patch.apk" restarted the phone and presto all working again.

Network problem
swoney said:
Thanks for everyones help
This is how i fixed it
I placed the efs.img in a zip file called "EFS-CWM-flasher.zip" theen i flashed it with "CMWRecovery" then download 'Ariza patch.apk" restarted the phone and presto all working again.
Click to expand...
Click to collapse
Could you explain this in more details? am a newbie experiencing the same problem.
thanks.

Musanch said:
Could you explain this in more details? am a newbie experiencing the same problem.
thanks.
Click to expand...
Click to collapse
Ok what have you lost?
If you have the correct imei then flash this tool and it will recover your network.
http://forum.xda-developers.com/showthread.php?p=32338426
If your imei isn't correct either 0000 or 004499 then you need to flash your backup efs.img if you didn't back it up then the best thing is place the original stock rom and run triangle away and warranty it.

Problem solved
Guys I had this problem for about 3 months and today I found a solution to it ..so happy, so heres the deal ...my imei was not broken but I could not make calls .the error that it gave was not registered on network.i tried flashing stock rom , different modems , different roms but no succes until now.
So heres what you have to do
Install the latest version of miui rom .
Download the dmg1 modem and install it after installing the miui rom.
Then install the ariza patch and apply yhe patch that it has.make sure that you have internet connectivity while using ariza patch.after downloading and Installing the patch your mobile will restart and hopefully you will be able to make call.

swoney said:
Thanks for everyones help
This is how i fixed it
I placed the efs.img in a zip file called "EFS-CWM-flasher.zip" theen i flashed it with "CMWRecovery" then download 'Ariza patch.apk" restarted the phone and presto all working again.
Click to expand...
Click to collapse
did u run the patch?where are the zip file.?
i have the correct imei

not registered on network...

so my note2 got messed up because i messed up with something in rom toolbox .so i had to flash it to the stock firmware and after that i cant use my phone to call or mesage .the line not dead cause any call to my number is ringing on the other end but no respone on my phone.the messages also get delivered but nothing comes up on the phone.also i dont have an efs backup.and the imei on the phone is same to that on the box.and i get the network and all and my phone also detect the network but when i try to call it says not registered on network..plzz help..also my warranty is over

Nexsss1 said:
so my note2 got messed up because i messed up with something in rom toolbox .so i had to flash it to the stock firmware and after that i cant use my phone to call or mesage .the line not dead cause any call to my number is ringing on the other end but no respone on my phone.the messages also get delivered but nothing comes up on the phone.also i dont have an efs backup.and the imei on the phone is same to that on the box.and i get the network and all and my phone also detect the network but when i try to call it says not registered on network..plzz help..also my warranty is over
Click to expand...
Click to collapse
Flash dmf1 or me4 modem.
Sent from my GT-N7100 using xda premium

Hey thanks for replying .can u post a link to the modems

Flashed both modems still no luck..

If you have flashed ME6 or MF2 based rom. - Your EFS has been modified, No changing Modems(Only XXDME4 or DXDMF1) Backup EFS anyway.
If you aren't getting signal - flash this modem (DME4) or this one (DMF1)
If you made a EFS backup prior to flashing ME6 or MF2 based rom then downgrade to a non ME6 or MF2 ROM then change modem. After reboot you won't have imei. Now restore your EFS.
Even if you do not have a previous EFS backup then try the same procedure, but don't change modem. If you get signal, then you were lucky(happens in case you flashed a custom rom or didn't flash the latest kernel).
If you don't get signal then you could try this-
1)Copy your EFS folder to a safe location.
2)Delete the EFS folder. It will way can't but don't worry.
3)Reboot. You might have factory mode (yellow colour text on screen) and no lockscreen.
4)Copy the backed up EFS folder back. (Replace All)
5)Reboot.
If you can't get rid of factory mode(yellow text overlay) even after recovering imei, try this-
Enter all the commands into terminal emulator one by one and hit enter after everyone. Don't forget to give SuperUser permissions to it.
Honourable Mention -
Thunder Roar Rom has been configured to allow modem change without corrupting efs - http://forum.xda-developers.com/showthread.php?t=2338033
P.S. The Mod himself recommended me to post in android development section.
Sent from my Nexus 7 using xda premium

Same problem
Same problem here, installed hawkish rom, no network

did that still no luck

Nexsss1 said:
did that still no luck
Click to expand...
Click to collapse
See the thread here '(GUIDE) EFS/EMERGENCY CALLS....'
Hope that will work for you.
Sent from my GT-N7100 using xda premium

[Q] Different imei that original and no network, only emergency calls

I just got a note 2, just changed my note 2 with a black one both n7100s
it was on 4.1.1 and everything was working fine.
i thought why not restore my omega rom nandroid from my white note and simplify everything, but when i did that there was no network and no imei.
then i thought i should odin it. as i didnt have any odin file available with me at that moment i flashed the 4.3 leak odin. there was an imei but and there was signal but not of my provide just emergency calls only.
imei was different from the original one which was there.
please tell me what to do.
I dont have an efs backup.
please help me out as i am without network from past 3 hours and its very important number.

Yaar its clearly mentioned in every rom thread-take an efs backup before flashing..and the first thing to do after rooting is efs backup..
यह तो वही बात हो गई। आ बैल मुझे मार
Ok to the topic-
You should flash stock India rom asap through odin..it should fix the problem
BTW its really strange that a cwm backup CHANGED the imei..in worst case it says-null or 0049,but doesn't changes the original! What's ur imei number?is it null or 0049?
Sent from my AweSoMe ?♥Note2♥?

mannyvinny said:
Yaar its clearly mentioned in every rom thread-take an efs backup before flashing..and the first thing to do after rooting is efs backup..
यह तो वही बात हो गई। आ बैल मुझे मार
Ok to the topic-
You should flash stock India rom asap through odin..it should fix the problem
BTW its really strange that a cwm backup CHANGED the imei..in worst case it says-null or 0049,but doesn't changes the original! What's ur imei number?is it null or 0049?
Sent from my AweSoMe ?♥Note2♥?
Click to expand...
Click to collapse
After CWM it showed null
the after that i odined it to stock 4.3 leak.
then i am getting some different imei but network isnt coming of my provider airtel

I had this happen to me some time ago.
I flashed a rom ,and because I had a noandroid backup i thought I was safe.
But I didnt back up the EFS, (I have learned from that mistake).
My IMIE number changed to a generic one.
In the end after trying absolutely everything, including getting the guy in the dodgy phone shop to give it his best shot, nothing worked.
Its sad cause, wifi , camera and everything worked but without the iemi number calls and messaging and mobile internet were gone forever.
I sold it on ebay as it was for spares.This recovered some of the cash and I just went and bought another.
I sincerely hope you have better luck than I did, and you like me, will never not backup your EFS folder again.

visheshsahlot said:
After CWM it showed null
the after that i odined it to stock 4.3 leak.
then i am getting some different imei but network isnt coming of my provider airtel
Click to expand...
Click to collapse
Did u tried 4.1.2 stock odin?
Sent from my AweSoMe ?♥Note2♥?
---------- Post added at 11:18 PM ---------- Previous post was at 11:17 PM ----------
universil said:
I had this happen to me some time ago.
I flashed a rom ,and because I had a noandroid backup i thought I was safe.
But I didnt back up the EFS, (I have learned from that mistake).
My IMIE number changed to a generic one.
In the end after trying absolutely everything, including getting the guy in the dodgy phone shop to give it his best shot, nothing worked.
Its sad cause, wifi , camera and everything worked but without the iemi number calls and messaging and mobile internet were gone forever.
I sold it on ebay as it was for spares.This recovered some of the cash and I just went and bought another.
I sincerely hope you have better luck than I did, and you like me, will never not backup your EFS folder again.
Click to expand...
Click to collapse
Was ur phone under warranty?
Sent from my AweSoMe ?♥Note2♥?

I had no warranty, and I doubt if that would have saved me either.
With a changed IEME number Samsung wont help you, (they had no interest in helping me).
There was a service centre guy I spoke to and he said he could try returning the rom to normal for fee, but he had no confidence that that would work.
I tried odin, different roms etc etc, the phone shop guy had the phone for 36 hours.
He wanted to fix it just to beat the IEME number and said he had succeeded on an S4.They tried all their ways and nothing.
Like i said, I wish you luck but without EFS backup you will be lucky.When all this happened to me I read all there was to read and nothing could fix it

If you don't have the EFS backup then just flash stock rom 4.1.2 and take it to the service centre if are under warranty if not still they will fix it for free, If not then search some one in your town with Z3X/nspro box and he/she can fix it in 2 minutes.

Your imei sv is 01? If yes just install 4.1.2, backup efs, install kernel adam or predpill and ariza patch. If still whitout network restore efs, reboot and enjoy.
Enviado desde mi GT-N7100 usando Tapatalk

jhonyp said:
Your imei sv is 01? If yes just install 4.1.2, backup efs, install kernel adam or predpill and ariza patch. If still whitout network restore efs, reboot and enjoy.
Enviado desde mi GT-N7100 usando Tapatalk
Click to expand...
Click to collapse
Flash MG1 modem

still no success
jhonyp said:
Your imei sv is 01? If yes just install 4.1.2, backup efs, install kernel adam or predpill and ariza patch. If still whitout network restore efs, reboot and enjoy.
Enviado desde mi GT-N7100 usando Tapatalk
Click to expand...
Click to collapse
I did all this but still no network
i made an efs backup, then flashed adam kernel, then applied ariza patch and now still no network.
see what i get is network bars, but in network column it says emergency calls only.

flashed mg1 modem as well
Pezmet said:
Flash MG1 modem
Click to expand...
Click to collapse
flashed mg1 modem as well, but still the same thing, it shows bars but emergency calls only. imei is still there
35505********61/01
should i odin back to 4.1.1 which was initially present and see if that could help?

visheshsahlot said:
I did all this but still no network
i made an efs backup, then flashed adam kernel, then applied ariza patch and now still no network.
see what i get is network bars, but in network column it says emergency calls only.
Click to expand...
Click to collapse
Do you restore efs after apply ariza patch?
Enviado desde mi GT-N7100 usando Tapatalk

just had a similar problem.
I solved restoring my efs using the terminal emulator and this string (after to have run "su" )
busybox tar zxvf /sdcard/your_backup.tar.gz -C /
Click to expand...
Click to collapse
reboot
of course the best thing is to do a backup between philz CWM to be used in this case..
ciao!

jhonyp said:
Do you restore efs after apply ariza patch?
Enviado desde mi GT-N7100 usando Tapatalk
Click to expand...
Click to collapse
yes i restored efs after ariza patch

I guess these are the steps he done..
1. Nandroid Backup on OLD Device on SD card
2. Inserted SD card on New Phone
3. Flashed Philz recovery on new phone
4. Restored old phone Nandroid Backup on New Phone.
5. IMEI got null
6. Flashed 4.3 leak
7. Got imei but network showing emergency call only
8. Install adam kernel and use ariza patch and then flash modem
9. After flashing ariza patch got 00499 imei and then flashed mg1 modem and got the imei back
10. Still emergency call only
11. Flashed 4.1.1 XXALIE rom
13. Now IMEI is 0049*
I wonder how he was able to restore cwm backup from another phone to his new phone ? Why the md5 mismatch not shown

anoopva said:
I guess these are the steps he done..
1. Nandroid Backup on OLD Device on SD card
2. Inserted SD card on New Phone
3. Flashed Philz recovery on new phone
4. Restored old phone Nandroid Backup on New Phone.
5. IMEI got null
6. Flashed 4.3 leak
7. Got imei but network showing emergency call only
8. Install adam kernel and use ariza patch and then flash modem
9. After flashing ariza patch got 00499 imei and then flashed mg1 modem and got the imei back
10. Still emergency call only
11. Flashed 4.1.1 XXALIE rom
13. Now IMEI is 0049*
I wonder how he was able to restore cwm backup from another phone to his new phone ? Why the md5 mismatch not shown
Click to expand...
Click to collapse
yes exactly
i dont know what to do now

Bro, seriously this is what almost happened to me yesterday with my S II. Always make an EFS backup.
Anyway, since you've tried pretty much everything, I guess you could sell it for parts or as a mini Galaxy Tab
Have you tried a different SIM?
Also, try taking yours out, rebooting the phone. Put it on Flight Mode. Power off once again. Put the SIM back in. Turn Flight Mode off, go to Network selection and try to manually choose Airtel.
Good luck.
Sent from my GT-I9100 using Xparent Green Tapatalk 2

Learn from your mistake now. Dont do dirty flash. Well try to search imei. I was reading on any other way for you try. Lots of guide there.
Sent from my GT-N7100 using xda app-developers app

But its really a strange situation that how can a rom change the imei(null/wrong imei in worst case)?
Sent from my AweSoMe ?♥Note2♥?

solved
got everything cleared out....was charged just 200 bucks by a local vendor for imei repair and everything works fine.....my everything got corrupt as i flashed nandroid of another device onto mine....now i made efs backup first so that this isnt done again
he said that good you didnt do much after it was done.....too many changes in modem and baseband would have led to baseband corruption and then i would have to change the motherboard
now i am enjoying my super awesome note 2 as we speak