yashsingh1/xdaforums huggingface dataset:
[Galaxy S II General] oli1989:
Hello Guys!

I have been searching for long such a Thread!

My Galaxy S2 GT I9100 Firmware 4.1.2 has no IMEI Number!

I don't have backuped my EFS File.

The 9 Steps for Recovering my IMEI doesen't work for me, my IMEI File is empty.

Also the GSII_Repair app doesen't worked :(

The Guide tells that i have to flash my Firmware to an old Firmware but i can't find one, i am searching following

Firmware: I9100XWKF3 (Branding Eplus Germany)

Download: offline

Info: 2.3.3 (3-parts)

GT-I9100LKAEPL: I9100XWKF3/I9100EPLKE4/I9100XXKE7/I9100XWKF3

Is it possible to copy some files from my Galaxy S3 for example EFS files or IMEI??

Please help me.
[Galaxy S II General] tetakpatak:
Definitely not! Don't even try.

Try to flash some other firmware with Odin. Good luck.

tetakpatalked from Nexus 7 flo
[Galaxy S II General] oli1989:
I've managed to flash the Firmware 2.3.3.

I also done all the steps wrote but nothing worked.

The SGSII_repair app also did no succes, then i do the third step in the app the phone reboots but no IMEI after reboot.

Can anybody help me, or am i doing somehing wrong?
[Galaxy S II General] lovegambler:
Take it to the nearest Service center (if it's in warranty) or Mobile repair shop to get it fixed

your PCB needs to be replaced
[Galaxy S II General] sorset:
Hi, I have UNKNOWN Baseband problem and there is no file named ".nv_data" in my efs folder and nv_data.bin.md5 is a blank file. would you please upload your backup?

thanks
[Galaxy S II General] madhur1209:
hi,

I tried upgrading it to DDLF2 but the baseband still shows 'unknown' where as there is no IMEI number yet, infact i tried all the three ROM's XXKPQ, DDLF2 and DDMF1 but still there is no IMEI and the baseband is still unkown.

In one of the other posts i read that after flashing the stock ROM I should connect the phone to KIES and it may correct the baseband and IMEI issue but even this not working in my case.

any help here will be highly appreciated.
[Galaxy S II General] tetakpatak:
[MENTION=4924151]madhur1209[/MENTION] it is very regrettable to read your post.

This here works with some Samsung devices, with other not at all:

http://xdaforums.com/showthread.php?t=1813559

Should it not work, I must honestly say that I don't think bringing it to the service to restore IMEI is worth it (they can fix it) regarding how i9003 old device and not such great piece of hardware is- now when for example in Germany brand new S3 mini costs only 99€.

tetakpatalked from N7100
[Galaxy S II General] fih13:
at step 6th

I don't have only " .nv_data" I have ".nv_data.bak" and ".nv_data.bak.md5"

which one I should use or where can I find " .nv_data"
[Galaxy S II General] madhur1209:
hi,

thanks for the link, will give it a try.

as for getting it repaired from the service center same as you even i feel its not worth it, instead of getting the pcb replaced it is more logical and economical to get a new phone instead :)

will update whether it worked for me or not. appreciate your help.
[Galaxy S II General] Megaflop666:
Need some help

I am trying to repair an AT&T Galaxy S4 Active that was soft bricked. I got it back up and running but the imei is null/null. I was following the directions in this thread and when I go to step #6, there is no nv_data file, there's nothing. Any help or suggestions? I do not have a backup of the original efs folder, I don't have a backup of anything on it. (again, I am fixing it for someone).

:eek:

Any help is greatly appreciated.

Thanks
[Galaxy S II General] golfcartguy:
Megaflop666, did you solve the non existent files issue?

I too have a similar situation, nothing there. Going to try again tonight when I get home.
[Galaxy S II General] Galaxy pop Plus:
my imei isn't the same as the one at the back of the phone is this gonna help?
[Galaxy S II General] Megaflop666:
I have not resolved the issue yet. I have set the phone on the shelf and am taking a break, while hoping to hear a good reply from someone.
[Galaxy S II General] MarcJustCons:
IMEI and Network Problem

After flashing countinuous times. My phone dont have Network and IMEI changed into a 000000000000000/ 01. Can someone help me fix my problem? and also, .nv_data is not on my /efs folder. Can i still fix this if the .nv_data is not in /efs folder?
[Galaxy S II General] MarcJustCons:
Fixed 0000 IMEI/No Signal

Okay, after searching a very long time for a solution of my SHW-M440S problem. I fixed it with just Flashing a Modem. Flashing a lot of times can damage IMEI/Signal Problems and thats what problem im facing for the past days. As for my problem. My IMEI changed to 000000000000000/ 01 and a signal lost. Fixing/Deleting/Restoring NV_data files in /Efs folder, using ARIZA PATCH, Flashing back stock roms, etc. didnt fix my problem. The only thing that helped me is just simply Flashing "MG4 Modem Zip in Recovery Mode". YES! That it.

Here's where you can get the Patched Modem : www (dot) dropbox (dot) com/s/geispctijpxqjms/Patched_Modem_I9300XXEMG4.zip

I dont know if this will work on other s3's. But i think it will.If you want to try it, before Flashing it. Do back up of your android and Flash the Modem.

(Sorry for my bad english)
[Galaxy S II General] patrickph:
very helpful， i just need backup and restore my ime
[Galaxy S II General] mark.m.moran:
I wonder will this work on the Galaxy Nexus!??
[Galaxy S II General] MarcJustCons:
the patched modem that mentioned on my post is only for Samsung galaxy s3. Try searching for your phone's modem. :)
[Galaxy S II General] mark.m.moran:
OK man, hopefully it will work!!
[Galaxy S II General] thibeirao:
Would it wok on the galaxy s4 GT-I9505??
[Galaxy S II General] knuckles1978:
I've not got any imei problems right now, but I've wondered this for a while....

Let's say that I'd lost my imei and hadn't done an efs backup, but I had a nandroid.

Is there any way of recovering my efs folder from system folder of a nandroid backup, so I wouldn't have to go restoring the full backup? Like an app or something that you can browse a nandroids files?

Reason I'm asking is because this happened to me the other day and I ended up restoring the full nandroid just to get my efs back, then I had to spend ages getting my phone back to the way I like it.
[Galaxy S II General] akhilkumarco007:
my efs folder is empty please help me :( i lost my imei even after flashing the stock rom i couldnt get it back :(
[Galaxy S II General] Gabry70197:
thx ;)
[Galaxy S II General] S3LEE:
http://xdaforums.com/general/rooting-roms/imei-000-044999-repair-t2806129
[Galaxy S II General] Sziklián:
What to do if i can't delete or rename my EFS folder?
[Galaxy S II General] HKShooter:
very useful info:good:
[Galaxy S II General] usidda:
Use the apk and u will see there is a read only and wright only options the corner which let's you delete or rename any thing on you system folder
[Galaxy S II General] hellrider2000:
imei=null , unknown baseband

hello, please help,I have lenovo s820 v1.0 stock rom AOSP_4.4.2 fully rooted,but I cant retrive my imei and baseband.. I have no efs file or nv_data.bin file, when I go to engineer mode in radio and type my original imei it says "this command is not allowed in UserBuild"!!! What to do, how to retrive imei... btw I have downloaded efs pro 2.1.73, but it cant find my phone, how to fix that?? PLS HELP...

ok I changed to stock rom and nothing happend, so I rooted and tried with mobileuncle tools and is says "AT command fail to send" PLEASE for the love of God somebody, anybody.. HEELLLLPPPPP....
[Galaxy S II General] gastonw:
There's an app extractor somewhere, you can use that

You can back the EFS folder with kTool tho, much easier.
[Galaxy S II General] tetakpatak:
[MENTION=4780406]knuckles1978[/MENTION] hi, have you solved the problem, mate? I somehow missed your post and see the answer to it.

I think it could also work with extracting the folder in Linux and pushing to the device.

If you're going to replace the folder or the parts, careful with setting the permissions!

But check before if the EFS folder is mounted, it is often getting just unmounted after some mod and can be solved that way.

tetakpatalked from N7100
[Galaxy S II General] LaMarMôt:
Thank you :d

:cyclops:;):cowboy::D
[Galaxy S II General] knuckles1978:
I didn't actually lose my imei, I was able to restore a nandroid I had to fix it, but it meant that I had to restore to a point that I didn't want to restore to, which was a pain in the ass because I had to reinstall ROMs and put everything back to the way I liked it.

I just wondered if there was a way that I could have got my imei back from the nandroid, without having to restore the whole backup. ie extract the nandroid, grab just the efs folder, and overwrite the screwed up efs folder with the good one.

I'm assuming I could have done that but I'm not 100% sure.
[Galaxy S II General] tetakpatak:
Oh, no- I know what you mean.... :) good your phone is fine now ?

OK, usually there is an easy way if you're lucky: if the custom recovery supports backing up the EFS partition- and if your backup has compatible md5, it should be possible to restore EFS only. TWRP usually has this option, PhilZ nearly always (under custom restore job)

My impression is that in many cases when IMEI dissapears the EFS partition doesn't get damaged or re-written, but it simply isn't mounted.

tetakpatalked from Nexus 7 flo
[Galaxy S II General] hyhfct:
Need some quick clarification

Hi, just have some quick questions here regarding the instructions in this guide:

1. Firstly, is the backup you create in the beginning already an automatically newly generated /efs folder, or is it an /efs folder that contains your IMEI?

2. In step 5, I am unable to locate a .nv_data file. I am using Root Explorer.

I have a Samsung S3 GT-I9300 on version 4.3. Just need clarification and help on these two questions, thanks.
[Galaxy S II General] Sát Thủ Cô Đơn:
Not work for my phone

Not work for my phone. :(
[Galaxy S II General] vinsin:
query

Hello All,

I am new to rooting phones and recently tried something on a galaxy S2. I had a korean version of S2 model SHW-250s which was locked. I lost my new phone so tried unlocking this myself...looked at some youtube videos some blogs and finally decided to use this method posted by someone:

1)Flash these two files using ODIN to convert the korean model into international version :

GTI9100_ext4.pit

9100XWLPW_I9100ODDLPC_I9100DDLPB_HOME.tar.md5 (stock ICS firmware for my country).

This successfully converted my phone to S2i9100.

2)Then to unlock I used a siyah kernel as posted by a developer :: Siyah-v3.2b8

This successfully installed SU and i checked using RootChecker apps that there is root access.

3)Then to unlock my phone i used GalaxSimUnlock app (did rooting as this app required root access)

This successfully unlocked my phone. I was able to call receive messages with new carrier.

I installed some more general apps used it for 5 days.

Sudddenly i started facing network issues. I was not able to make or receive calls. Strangely, I was getting data connection from network but not able to make or receive calls. I could not register on any network.

I tried running GalxSimUnlock app again and it said Unable to read NV data.Since I was naive i tried reinstalling the stock ROM and SIYAH kernel to see if it helps. It didnt.

When i researched further i came to know there's probably something wrong in the NV_data.bin file in EFS . But i hadnt taken backup of EFS previously. Now can anythng be done to restore the EFS and make the phone work? Please help me....

When i run GalaxSimUnlock app it shows everything in green except IMEI number which it blinks in red. But I am able to see a IMEI number and it doesnt look like something default. I am getting everything else MAC id, baseband version etc.

Thanks everybody...please forgive my language if not upto the mark as i am pretty naive about this stuff.

I looked at this solution...I just wanted to know can I initiate this process without the original firmware? As i said i didnt take backup of the ROM and cant find the SKT korea S2 which SHW-250s ROM ...
[Galaxy S II General] almisoft:
Unable to delete or remount /efs

I cannot remount /efs to read/write.

In Root Explorer there is no chance to "Mounten R/W" (noting happens after click) or to delete this folder (Löschen fehlgeschlagen)

In console, too:

# su
# mount | grep efs
/dev/block/mmcblk0p1 on /efs type ext4 (ro,relatime,barrier=1,data=ordered)
# mount -o remount,rw /dev/block/mmcblk0p1 /efs
# mount | grep efs
/dev/block/mmcblk0p1 on /efs type ext4 (ro,relatime,barrier=1,data=ordered)

Any suggestions?

---------- Post added at 12:06 PM ---------- Previous post was at 11:16 AM ----------

I was able to format /efs with App "kTool".

But after that and a reboot, I have a nearly empty efs folder, thus the efs folder was not recreated!

After restoring original efs folder, I tried installing Android 4.1.2 (previous 2.3.6) with ODIN, now everything is fine!!!!!!!!

SIM is recognized, original IMEI is shown. Hope that helps!

I saved over 200€, because Samsung Service in Berlin said, a repair will cost that money (new SGSII at amazon: 260€ !!!!)
[Galaxy S II General] jman_131:
Thanks!!!

This guide helped me to remember the file names in the EFS folder, it had been so many years since I actually had to mess with it... I can not tell you how many ROM's I have flashed, (both clean and dirty) for whatever reason thhis time, on a clean install from AOCP 4.2.2 to slimkat...Lo and behold generic IMEI.

Luckily, three years ago I backed up my /efs to many locations....Just took a minute to find out what I did with it.

P.S. ---

Back Up that EFS!!!
[Galaxy S II General] 1BadWolf:
I have an old captivate that I'm giving to a friend and the imei had been erased. I didn't want to give it to anyone until it was working properly and this guide helped me with that. The instructions were easy to follow and the procedure was easy to do. Thanks a ton for this!
[Galaxy S II General] :
thank you for the post dude.. but i am not fimiliar wid android development or adb but i need help regarding IMEI lost..

i am facing problems with my imei..

actually i have done this:

stepwise:

1. rooted the MICROMAX A110Q phone for 1st time using Framaroot app. and installed superSU

2.installed CMW version 5 in phone.

3. performed a complete nandroid backup nd placed it in PC and Ext-Sd card both

4.then following some tutorials i tried to install few custom roms:-

>>1 'COLOUR OS v2' custom recovery..

RESULT= didnt worked (stuck at boot screen)

>>2 'Note 3 rom for canvas 2 plus A110q

RESULT= didnt worked (stuck at boot screen)

5. incresed ROM partition upto 1GB successfully.

6. retry installing 'Note 3 rom for canvas 2 plus A110q'

>>Result = successfully installed.

VALID IMEI

7. i took a Backup of IMEI in mobile uncle tools

saved imei.bak file in PC also.

8. note 3 rom for A110q had some bugs so i tried to install new one..

9. tried to install "ultimate galaxy v3" accidently..

the rom was meant for A110 instead of my A110Q.. nd as a result i found my phone dead or bricked.

10. i followed instructions for unbricking. flashed the phone by SP_TOOLS with micromax canvas 2 original stock rom nd finally found phone back into life..

11. i started my phone all as new nd working..

but.. found an error...

"INVALID IMEI"

12. then i smiled nd simply restored the complete nandroid backup..

still "INVALID IMEI"

13. then i rooted phone nd installed mobile uncle and restored IMEI.bak

still "INVALID IMEI"

14. download imei writer from post in XDA followed instructions but it gives error

"power ON" even if i removed battery..

15. i downloaded MTK tools nd tried to write imei..

but after successfully completing process

still "INVALID IMEI"

i really need immediate help wid that..

both of my sim are off phone became ipod..

nd unable to repair my phone..please tell me some solution

so much thanxx ...in advance ...
[Galaxy S II General] GeniusisHere:
Thank You Op
[Galaxy S II General] bojan11:
GT-I9305T

Can help, I lost my IMEI number in the file efs have nv_data file.

Can you inject new nv_data files and manually enter the IMEI number
[Galaxy S II General] aab44:
efs format by kTool helps me to retrieve generic efs file with 0049 IMEI number.

Then I followed steps:

1) from backup i made earlier in external sdcard I copied "imei" folder to efs folder in internal sdcard of phone.

2) and copied .nv_data.bak twice efs folder in internal sdcard of phone and renamed them to nv_data.bin / nv_data.bin.bak

3) ran the command from terminal:

su

chown 1001:radio /efs/nv_data.bin

it works with me for my SGSII

Thanks a lot for your great help guys.

Happy new year,
[Galaxy S II General] eamon0989:
I used this too, saved my phone and saved me from a heart attack lol

Sent from my Galaxy S2 running CM9 from Xda Premium, please thank me if I help you :)
[Galaxy S II General] beechlj2:
Many thanks for this guide. I had one extra step I needed todo though, my /efs partition was properly messed up, an imei number wasn't shown at all (showed as unavaliable under about phone->status). So (following a guide from forum . samdroid . net) I used adb to connect to my rooted rom (also needs busybox installed), and typed:

su

mke2fs /dev/block/mmcblk0p1

mount -w -t ext4 /dev/block/mmcblk0p1 /efs (to check it mounts without error)

reboot

Once rebooted the /efs partition got mounted automatically, and my imei number showed as 0049 and so I could continue with the guide.

Many thanks again for the guide, saved my phone from being an ipod.
[Galaxy S II General] josepetit:
Really thanks for this guide, its perfect..!!
[Galaxy S II General] unlockberry:
when i run the commands:

su

mke2fs /dev/block/mmcblk0p1

mount -w -t ext4 /dev/block/mmcblk0p1 /efs (to check it mounts without error)

reboot

i get :

su

# mke2fs /dev/block/mmcblk0p1

mke2fs /dev/block/mmcblk0p1

mke2fs: can't format mounted filesystem

what's the problem????
[Galaxy S II General] microline:
thx you for your guide, I was have problem with some applikation i buy it on my original IMEI, and after instaling some ROM I exedently change IMIE and i was not able to return application.

br.
[Galaxy S II General] beechlj2:
Sounds like the partition is already mounted, you can confirm by just typing "mount" and you should see an entry for "/dev/block/mmcblk0p1 /efs". I should have mentioned that in my post that the first part of the issue I had was that this partition hadn't mounted, and I needed to run mke2fs, and then after a reboot it had correctly mounted and I could start goinf through the steps in this guide.

When you check your imei number under "about phone->status" does it show an imei number or just unavliable?
[Galaxy S II General] unlockberry:
this's what i get when i pass "mount":

# mount

mount

rootfs on / type rootfs (ro,relatime)

tmpfs on /dev type tmpfs (rw,relatime,mode=111)

devpts on /dev/pts type devpts (rw,relatime,mode=600)

proc on /proc type proc (rw,relatime)

sysfs on /sys type sysfs (rw,relatime)

none on /acct type cgroup (rw,relatime,cpuacct)

tmpfs on /mnt/asec type tmpfs (rw,relatime,mode=755,gid=1000)

tmpfs on /mnt/obb type tmpfs (rw,relatime,mode=755,gid=1000)

tmpfs on /mnt/usb type tmpfs (rw,relatime,mode=755,gid=1000)

tmpfs on /app-cache type tmpfs (rw,relatime,size=7168k)

none on /dev/cpuctl type cgroup (rw,relatime,cpu)

/dev/block/mmcblk0p9 on /system type ext4 (rw,relatime,barrier=1,data=ordered)

/dev/block/mmcblk0p7 on /cache type ext4 (rw,nosuid,nodev,noatime,barrier=1,dat

=ordered)

/dev/block/mmcblk0p1 on /efs type ext4 (rw,nosuid,nodev,noatime,barrier=1,data=

rdered)

nil on /sys/kernel/debug type debugfs (rw,relatime)

/dev/block/mmcblk0p10 on /data type ext4 (rw,nosuid,nodev,noatime,barrier=1,dat

=ordered,noauto_da_alloc,discard)

/dev/block/mmcblk0p4 on /mnt/.lfs type j4fs (rw,relatime)

/dev/block/vold/179:11 on /mnt/sdcard type vfat (rw,dirsync,nosuid,nodev,noexec

noatime,nodiratime,uid=1000,gid=1015,fmask=0002,dmask=0002,allow_utime=0020,cod

page=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro,discard)

and the IMEI is unknown, & when i dial "06" i get a blank pop up with just the OK bottom.

---------- Post added at 01:21 AM ---------- Previous post was at 01:03 AM ----------

I've tried the 9 steps procedure of this thread, i deleted the efs folder & made a reset but when i checked the efs again there was no nv_dat files or IMEI folder at all except for 4 or 5 files, & that was my SFR gs2,

as for the other phone Orange gs2 -with the same corrupted efs folder- after the reset all the files were there except for nv_dat.bin.md5 & the .bak files..., is that normal for the Orange gs2? & what about the sfr one?
[Galaxy S II General] nekotami:
efs lost

my phone is A8 android 2.2.1

I have done factory reset and now it is not usable as a phone.

with *#06# it shows imei 1,2 : invalid

after reading the thread I could not find the efs or nv_data ?

can it be recovered ?
[Galaxy S II General] rocky_pratik:
Yeah always safe to have a backup of the EFS folder..

:D
[Galaxy S II General] Mr.RS4:
Where is this?

In computer\GT-I9100\Phone\EFS_BACKUP? In here there are only .rar files(winrar). Or is it wrong place?

EDIT

I got it.

Tried GSII_Repair For Samsung Galaxy S II serval times, and know it works.

Thank you very mutch for all help :-)
[Galaxy S II General] vakas_2007:
no .nv_data file!!!!!!!!!!!!!!! plz help

i lostmy imei it shows fake imei i have nv_data.bin and nv_data.bin.md5 in my efs folder but dont have .nv_data file wht to do plz help.......
[Galaxy S II General] IICRASHII:
I'm using root explorer and i can't mount it on R/W inside the efs folder so i can't delete or change anything inside the folder any help with that ?:confused::confused::confused::confused::confused::confused::confused::confused:
[Galaxy S II General] IICRASHII:
Is this thread still alive or what?! :/
[Galaxy S II General] lethas:
Great job mate...
[Galaxy S II General] IICRASHII:
k, i manged to restore my orginal imei, baseband, netwrok..etc by doin this :

1-downloaded this program GSII_Repair from market

2-made back up for corrupted efs file by GSII_Repair

3-flashed my phone with old orginal firmware (I9100XWKE1)

4- got network signal back and imei start with 0049

5- rooted my phone with cf-root

6- used GSII_Repair to add my corrupted efs file back

7- got my orginal imei, network, baseband..etc

8- updated back to 2.3.5 and rooted with CF-root and everything work normaly :)
[Galaxy S II General] Royaless:
Thanks!

Just flashed a ROM and its happens, now works fine.
[Galaxy S II General] CompuTechnoPro™:
EFS Backup..

I only have cryptprop_essiv in the efs folder. What do I do now ???
[Galaxy S II General] CompuTechnoPro™:
Thanks A Lot !!!

Getting Signal Now..

But, IMEI is Generic (004999010640000) !!!

What to do restore my original IMEI...
[Galaxy S II General] tiagorenova:
I have the same problem, but I don't have .nv_data file, just nv_data.bin and nv_data.bin.md5, my imei is generic, not an original.. :S HELP please
[Galaxy S II General] Araragi:
I follow the step.

I can't find any ".nv_data", but i find ".nv_data.bak" hence I used it instead the original listed here.

I still can recover the imei, instead, the factory mode pops out, and the power button option is lost

Which step did I miss to get to that state?
[Galaxy S II General] Arman_Ji:
Moshkel

Salam. dadash khaste nabashi... mamnun az amuzeshe khubet... man hamaro anjam dadam..

yejaa mundam vakhti tu terminal emulator mizanam "adb shell"

javab mide : "error : device not found" !!!

chikar knm ?? badjur gereftaram...

vagean bara iraniaa baese eftekhare ke yeki messe shoma hamchin jaye matraho bozorgi post gozashte o 214 taam thanks khorde,..

behet eftekhar mikonim....

manam gereftaram... age mishe be shomaram zang bezan ta begam gushie man chi shode... yani harrrrrkaaariiiiii be zehnet bere3 anjam dadamaaa...

doros nemishe ke nemishe....

age mishe... emkanesh hast , behem ye zang bezan,,, ya hadde aqal tak bezan man mizangam ---> 9355217253

:)
[Galaxy S II General] MikiGry:
[MENTION=6179860]Arman_Ji[/MENTION]

Please use english language.

And did u wrote your wats app number ?

Wysłano z Slim-fonika 8.14 weekly...
[Galaxy S II General] stratogabo:
Edit: solved.