yashsingh1/xdaforums huggingface dataset:
[Galaxy S II General] Citadel69:
restored lost imei but still no 4G

I'm hoping someone can help me. I recently lost my imei (went to zero), I re-injected it using the PeoplesArmy method, but it didn't restore my 4G. So the imei is on my phone but my data service is stilled screwed up as I"m only on EDGE. I was wondering if anyone knows of a fix for this. I went through the steps layed out by the Peoples Army but it didn't work. Thanks in advance for any help.
[Galaxy S II General] Walentyn15:
Does this guide works only with SGSIl?

Sorry if same question was already asked, I'm lazy to search it on 33 pages :)
[Galaxy S II General] rythu_u:
yea i guess they rooted my phone and used certain commands to fix my efs folder .. if you loose your imei no. its because of corruption in efs folder . you can only acess it if you have root acess in your phone ... hope you can understand what im saying :D
[Galaxy S II General] evolution_x:
The EFS Clear option from ODIN isn't the same thing as erasing the EFS manually ?

I have not made a backup and my IMEI and Baseband is unknown after flashing a ROM on Samsung i9070, is this tutorial valid for I9070 ?
[Galaxy S II General] opticon107:
Hello! I need help so bad :(, my phone doesn't recognize any SIM Card and my IMEI is empty.

I followed this guide with no success. What am I doing wrong?

I have a lot of EFS backups, so I don't know what's the problem. I even tried to copy my EFS backup content to the root EFS manually, but it didn't work. I even used the HC-kTool to make a restore... but everything seems useless. Is there something I am missing here?

I found this alternative http://www.unlocksamsungonline.nl/index.php?page=download but I don't know if this works, what do you guys think?

I'm sorry for my bad english and thank you so much in advanced!!!

Have a nice day.
[Galaxy S II General] lawong:
i've tried every method available on xda including this one but my phone still same as 'unknown imei n baseband'

except for qpts tools that cant get it to work , i mean it still wont detect my phone..

Any other idea?
[Galaxy S II General] ddaazzzzaa:
i have imei showing null( most the time) imei-sv showing unknown( most the time) in settings. have been searching high and low for a fix and tried everything ive com across. efs repair ro gs2 repair. the manual 9 steps in this thread samsung tool installing other roms modems etc etc to name a few with out a fix yet............. there has been odd occasions that the phone displays the generic imei and then shows baseband etc etc as normal on phone, but unable to make network connection.....allthough there have been 2 very odd occasions i have had network connections. once able to make a call. and another recived a text that was sent days before to me.. ive noticed over about a hour the phone was showing signal bars on off on off on off etc about 5 seconds on average for a hour or so yesterday.... im thinking its more a hardware problem with the baseband chip. is there any way to check/test if this chip is operating properly or not?
[Galaxy S II General] ghnogueira:
Hi guys. I had my phone working properly this morning, and then all of a sudden I got the generic IMEI (0049 etc). No apparent reason at all. I tried restarting my phone several times but nothing helped.

First I tried doing the 9 steps described on this thread, since I had a backup of the original EFS folder on my sdcard (the files were dated from 27/07/2011, which is exactly when I got my SGSII), but after step 9 and rebooting the phone I got the welcome to android screens as if I was booting the phone for the first time, but still had the generic IMEI.

Maybe worth mentioning as some others I didn't have the ".nv_data.bin" file, only the ".nv_data.bak" file both on my original efs folder and the backed up one.

After that, I tried using Galaxy SII Repair app but it didn't change anything either.

Then I found the tutorial on this post (http://xdaforums.com/showthread.php?p=39100837#post39100837), which I tried doing both from terminal app available on Market and from the adb on my PC. Through terminal I couldn't do all the steps, but from my PC I could (I had to force a recovery reboot to do some steps, though). I finished doing all the steps, but even like that nothing changed.

My current status is I have the generic IMEI (0049...), I can access the 3G mobile network, but status shows as "emergency calls only" and when I try to call some number a message on the screen appears saying I'm not registered on the network.

I have gone through all possibilities I have read and none made my IMEI return to its original state :rolleyes:

Any help would be gladly appreciated.

Thanks!!!
[Galaxy S II General] ghnogueira:
I think I'm lost :(

I tried using Ktool to recover my IMEI using an .img that was created last year when I began changing ROMs and stuff, so it's obvious it was working back then. The phone even popped up with the pattern lockscreen I wasn't using recently, but with the code that I used back then... but no IMEI change, still the generic one =/
[Galaxy S II General] dollardollar:
One big problem, did the same as said in OP.

Deleted the EFS folder after backing it up through Root Explorer, but as soon as i press delete my phone restarted and then it is struck at boot screen for ever.

Tried reinstalling the roms from recovery mode, but never went through the boot screen.

I think i lost my EFS folder and phone can get that to start again

Any help guys, don't understand what to do next.
[Galaxy S II General] ghnogueira:
Very weird mate, I deleted my EFS folder many many times and it always got recreated at boot, so it was never a problem.
[Galaxy S II General] ghnogueira:
Well, I tried every single way possible in the world I could without having professional tools, but couldn't change it...

Went to this polish guy, paid him the 10 euro and in less than 5 minutes I had my phone working again.

http://forum.samdroid.net/f70/repair-imei-s2-5729/

Wasn't my first choice, really, but I got too tired after trying unsuccessfully for 3 days...
[Galaxy S II General] evolution_x:
I also have deleted my EFS in hope that I will get back the IMEI and baseband, but the folder got re-created and still no IME or baseband.
[Galaxy S II General] dollardollar:
I too am tired after 2 horrible days and most of it, my phone doesn't even start.

Planning to go Samsung guys today, hope it will be fixed.

After this is rectified, I'm never gonna touch the phone again to update or do any other stuff. Is my wife's phone and she's now cursing me like anything for past 2 days.

I have i777 and updating ROMs never had a issue like this.
[Galaxy S II General] litening:
Infinite thanks

Thanks mate.

You just made my day. Tried to take a short cut to your method, but best to actually odin flash an original firmware before your procedure. IMIE is now back to normal.... Thanks!
[Galaxy S II General] 0BEK:
nice man :)

very2 thanks :)
[Galaxy S II General] :
He has just successfully repaired the IMEI of my i9100, gets my vote!
[Galaxy S II General] xnatehatex:
I just emailed him. Hopefully very easy and quick for him to do.
[Galaxy S II General] evolution_x:
He told me that he cannot fix the I9070 remote.
[Galaxy S II General] ermacwins:
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://xdaforums.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. Also data connection connection works but when makimng calls it says condition call forwarding. The sim card works on other phones but other sims have some problems if used in this phone.

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
[Galaxy S II General] Ulasp:
Thanks to the OP. It worked. Have that original EFS backed up to several places now!

Just a note in the last terminal command to be typed in it worked for me with just chown 1001or radio, not 1001:radio
[Galaxy S II General] Fighting Dreamer:
nice thread

thank to share
[Galaxy S II General] Kevgretor:
really a useful thread! thanks to all
[Galaxy S II General] dmanojkmr:
I have some doubts, It didn't work out for me. please help

I don't Know what went wrong, I am still in the verge to repair my IMEI.

If I'm right the

COLOR="Red"]reset your phone[/COLOR] means -----> Factory reset

su ( ALLOW THE MESSAGE CAME AT YOUR PHONE's DISPLAY BY SUPERUSER PROGRAM ) ----> I couldn't understand what this line means

I used the stock I9003DDLF2_I9003ODDLF2_I9003DDLE1_HOME.tar

and PDA_BCK_CWM_universal_beta15.tar to root my phone.

I have attached the snap of my cmd prompt
[Galaxy S II General] dicle_gsm:
good job bro keep it up .
[Galaxy S II General] :
after i put in the "chown 1001:radio /efs/nv_data.bin" command, what should i see?

with mine it shows nothing and goes to the next line: # su
[Galaxy S II General] MrFreezah:
I tried the payed Galaxsim and so far it worked for me. Thanks for the tip
[Galaxy S II General] leio rusher:
IMEI BLOCK/GONE>NO EFS,>NO DATA>NO SIGNAL>>>> NO AT ALL>> cry...

samsung s3 here.. gt-i9300, philippines, stock firmware jb official 4.1.2.. stock rom.

problems:

1.NO MOBILE DATA

2.NO IMEI (setting>about phone>status>> NO! ITS GONE.. )

3 NO CARRIER SIGNAL

4.ALWAYS ASK TO INSERT MY MICRO SIM CARD THOUGH ITS PROPERLY INSERTED (setting>more setting>mobile network>>>>) any sim wont accept too...but when i insert my sim to other smartphone... my carrier is there.. it worked.. but i want to use my own phone..

I believe its blocked...

ANY HELP? PLS...
[Galaxy S II General] :
I think you should look into galaxy s3 thread. There's some tools provided where you can re create your lost imei file. Should be one for international s3 as well :D

Sent From My ©Galaxy S4 GT-I9400 http://img840.imageshack.us/img840/5849/nihonnofanboi.png
[Galaxy S II General] abhijeetrawat17:
in last by reset do you mean facory reset or just reboot
[Galaxy S II General] Saman2000:
EFS folder can not be deleted

When i try to delete the EFS folder through root explorer, it says it is read only and can not be deleted. I even tried to change the permission of the folder but it says its not possible to change the permission of a read only folder. Please help me what I should do?

I dont have the signal and once I press the *#06# it turns with no IMEI number. i rooted the phone and installed the root explorer.

Thanx

Saman
[Galaxy S II General] immortalneo:
U have to mount it as 'read-writable (R/W)'. :)

"To err is human, to forgive is divine"

Sent from my SGS II
[Galaxy S II General] Saman2000:
Thanx for your respond. I did change to R/W mode but in that case it says "delete failed". Do you have any idea about what I should do?

Thanx
[Galaxy S II General] immortalneo:
Try a reboot and see.

Or try using another root explorer app.

"To err is human, to forgive is divine"

Sent from my SGS II
[Galaxy S II General] jon.walker1339:
Cheers

Add a dab of lavender to milk, leave town with an orange and pretend your laughing at it.
[Galaxy S II General] freakin.ro:
does NOT work on

i9003 Galaxy S LCD

i9250 Galaxy Nexus

:)

just in case someone else tries ;)
[Galaxy S II General] immortalneo:
Thanks for sharing, but I do believe this thread is in the I9100 section. So it implies this guide is meant for the I9100 and not other phones. :rolleyes:

"To err is human, to forgive is divine"

Sent from my SGS II
[Galaxy S II General] dave96m:
Can't find EFS

I can't find EFS folder at all. It's either deleted or I don't know where to look. I opened Root Explorer and searched for 'efs' but all I got are some other apps' folders with 'efs' in name.
[Galaxy S II General] juniorkm7:
I have a problem. I wanted to empty all internal sd card, because I had problems with the device. I deleted EFS folder. I don't know if the IMEI is problem now but when I put *#06# it shows IMEI same as on the sticker under the battery.

Any ideas why I can't connect to network? I was running before SlimBean and Cyanogenmod, but I lost network. I decided to return to stock firmware with ODIN but still no network (I can only call emergency)
[Galaxy S II General] roxnad94:
i've deleted efs.

now my IMEI is 004999010640000 (that i think it is a generic IMEI)...

but, in my country , is working!

its ok if i use it?
[Galaxy S II General] Unexist6969:
Same here, deleted efs several times, same imei lol, everything is fine,

When i flash korean 250ms modem I get old imei back lol
[Galaxy S II General] gastonw:
The thing is that not everyone remembers their original ROM.

We gotta start tattooing babies upon birth "back up you're EFS folder, you'll thank me eventually"

Damn, that was drastic.

Sent from the little guy
[Galaxy S II General] astrogambit78:
Hello Guys

here are my screenshots

i cant find the EFS folder but can see the EFS backup.tar and EFSDEV-mmcblkop

my phone can call and be called and send sms as well

how can i restore the original IMEI without the EFS folder?

thanks :)

EDIT: I found the EFS folder in the root, but it does not have any files :(
[Galaxy S II General] riztauras:
Dear Brother,

I am in a need of deperate help.

I have a SHW-m250s Korean galaxy s2.

I converted it to I9100, it was working fine until the signal suddenly diappeared after 2 months of using it, and now my phone is not taking any sim card and my IMEI was turned to 0049XXXXXXXX.

Then I agian converted it to SHW-M250s with its original PIT and PDA, now IMEI seems to be fine but still no network.

and there is some text block on my home screen, with PDA version, phone version CSC: Unknown, Unique number : N etc.

I tried every thing but no luck.

In the SRS server it shows my serial number as 0000000000,

Do you think the serial number is messed up that is causing this problem..?

Any help will be really appreciated.

Thanks.
[Galaxy S II General] julinium:
Shipped original efs folder ?

Where to get that "SHIPPED ORIGINAL EFS FOLDER" if no backup was made ?
[Galaxy S II General] andrewwright:
Go Bk to stock Sam 4.0.3 some are getting efs Bk automatically just by doing that. Use Pc Odin. If not work try g/b Sam rom. Should work. No restore no Bk up just go Bk on old software and there it is. :confused:

sent from my I9100 Alliance v8
[Galaxy S II General] bronsonbayside:
i was able to reinstate my imei number and actually connect back to the network...My only issue now is having to copy the backed up original /efs into the newly created /efs folder

every time

i restart my phone! weird and annoying! running sgs2 i9100t
[Galaxy S II General] stevegrin:
Awesome!

Thank you very much for this! I don't have an I9000, but an I897 Captivate, and it worked. As this is my test phone, I tried it without reverting back to a stock ROM. I have CM10.1 - 20130609 installed. I followed your instructions other than going back to stock. Now I have the IMEI back and it has stayed after a few reboots.
[Galaxy S II General] Kilgrade:
bin or not bin .. that is the question

Hi everybody

first, sorry for my poor english ..

I have a i9003 with the fake imei 004999010640000 not running here in france ( no phone but data is ok ).. so, i make the 9 steps ( i have a efs backup on my pc ) but imei stay always the same ..

Do you think there can be something who can remove the good imei at all the reboot ?

This change appear when i'd install the last MUI Rom.

Now, i use the KPU stock rom and make a hard reset but nothing change ......

If someone can help me ..

Thanks

Jeff
[Galaxy S II General] cheese1234321:
When you said reset, do you mean reset the phone to factory settings?

Thanks
[Galaxy S II General] andrewwright:
Reboot mate
[Galaxy S II General] Kilgrade:
Hi

In fact, i made a factory reset after the installation of the XXKPH. I have a efs folder in my backup file on the pc but every time that i make the method to restore imei, i've always the fake imei 00499 ... my efs folder can be corrupt ?

I have srs remote client but i can't buy credit for the moment so i try another method to return with the imei who are under the battery .......

Jeff
[Galaxy S II General] andrewwright:
From what I read a lot of people can restore imei by going Bk to 4.0.3 Sam firmware. Try maybe it works fir you. Or try z3x and Sam tool 10.something.
[Galaxy S II General] diffuser911:
Doesn't work!!

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 here by OP

4. Tried fixing using SGII_Repair

5. Tried fixing using HC-kTool

All failed!

Next logic steps seem to be as below:

1. Go to local mobile shops and get IMEI repaired via software, hoping it helps.

2. Pay for an account in SRS

3. Pay this guy at cvxcvx pl and hope he can fix it.

Would these 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.
[Galaxy S II General] mickertslovakia:
hi i dont have the ".nv_data" nor the ".bak" files..

any help?...

S2 2.3.5

baseband UNKNOWN..

---------- Post added at 05:43 PM ---------- Previous post was at 05:02 PM ----------

did not work for me...

S2 2.3.5

baseband UNKNOWN
[Galaxy S II General] murphy504:
My phone won't be recognized by my PC. Samsung Drivers are installed correctly. Tried various versions of ODIN & another s2. Anyway I can get my pc to recognize the phone? :crying: I'm at my wits end
[Galaxy S II General] Miaxus:
Should it work for N7100 too?
[Galaxy S II General] ndlarsen:
Thank you.
[Galaxy S II General] semihns:
help

5) go to your backed up EFS folder on your sdcard, copy the "imei" folder to the EFS folder at the root of your phone, then again go to the backed up EFS folder at yout sdcard and copy the " .nv_data " file to your EFS folder at the root of your phone using root explorer, NOTE: the dot in first of nv_data is not a mistake, copy the ".nv_data" file.

I dont have nv data. I have nv_data.bin and ,nv_data.bak.files . which one should I copy to my phone. nv data bin or nv data.bak?

ıf ı nv data.bin, should I nv data bak?

thanks
[Galaxy S II General] rafeba:
Good job! :)
[Galaxy S II General] giankap:
excuse me, when i delete my efs folder, and reboot the phone, the generated efs folder only contains :

folder named .files

cryptprop_applied_result

cryptprop_essiv

cryptprop_onetimeboot

cryptprop_securewipedata

folder named dmp

no nv_data files..and a lot of files missing

what I've to do?

thanks
[Galaxy S II General] qsdf55:
The entire process has been coded into an apk avaible on the market by Helroz

It's called SGSII_repair

It's just saved my phone.
[Galaxy S II General] iKai92:
YESSSSSS!!!

YES MAN.

Thank you for this thread!!! I do the points and now i have my normaly IMEI!

I dont have the .nv_data.bin file. When you using the .nv_data.bak and the terminal emulator you can restore the IMEI.

You saved my life!!
[Galaxy S II General] zuperono:
I can't access market since my imei is broken.

Tried everything now, and nothing seems to work. My .bak files seems to be fine, but still don't work.

The service center tells me that the only way to fix the imei is to switch the motherboard (which will cost me around 500 USD).
[Galaxy S II General] xCruciaLx:
OMG.

You just saved my phone brother.

After installing this, the baseband and IMEI are now back to normal!

Damn. Thanks alot. I owe you and Helroz for this.

What a way to start my morning! :D
[Galaxy S II General] chargen2:
If I've never rooted and don't intend to, do I still have to back up my efs folder?

Can this be done without root?
[Galaxy S II General] OrrPenn18:
Without root, You can't access any system folders, nor backup efs files with any tool/apk!
[Galaxy S II General] nonchipmunk:
I tried replacing my phone.apk with one that was "the perfect phone.apk". It could be done using root explorer. As soon as I did, I lost signal, and my IMEI no. A factory reset and reflashing VillainROM didn't help.

Luckily I had a backup that I had taken a month back using EFS Pro (Original Development section). I restored with that - but still it didn't show up. It was messed up pretty bad. So I restored and then flashed the stock ROM using ODIN. I then rooted, flashed VillainROM and restored all apps with TB. Saved!

Still, thanks a lot for the helpful guide vaskodogamagmail - I probably will need this one day :)
[Galaxy S II General] chargen2:
Thank you for your reply.

I don't want to root my phone - don't have any need to and don't want the additional tasks of the rooting process.

You've confirmed that I can't backup EFS without root, but if I don't root, is there still a risk of the EFS getting corrupt during a ROM upload?

Thanks!
[Galaxy S II General] ricey1986:
This poses a good question, does the risk of losing imei only occur during custom roms or is it still present via official upgrades? If so couldn't we just return our phones to stock and claim under warranty?

Ricey
[Galaxy S II General] Crescendo Xenomorph:
And for me, I had re-flashed my EFS folder with efx file that come with XXKH3 ROM.

And the whole EFS folder is now generic one without any nv-data files, without any bak or bin file, no nothing at all... Just some files about crypto or things like that.

And I done this since my baseband and signal suddenly lost, and flashing modem files didn't work, so I tried to flash efs file, and this is the result: fake IMEI....

How to fix this friend? I'm really at lost now... (T.T)
[Galaxy S II General] GTownBruce:
Hi, when entering the following ADB command:

chown 1001:radio /efs/nv_data.bin

I receive the error message: No such file or directory

Phone is rooted; Superuser works... what's wrong here???
[Galaxy S II General] ipod86:
hello,

Unfortunately I have lost my imei. Now I would like to save my S2 with the above instructions. but in step 4 I'm getting nowhere. root explorer can not delete the data set and no rw. In the the root folder it is possible to mount zu rw.

what can that be?

sorry for my english
[Galaxy S II General] rishminder:
SEARCH MARKET FOR

GSII_Repair

THE AUOTHER OF APP IS Helroz
[Galaxy S II General] Zaknaf3in:
Hey mate,

I just yesterday had the exact same problem - fortunately, I was able to fix it.

Now, do you have any .bak files in your directory? The file that saved me was the .nvdata.bin.bak - so the systemmade backup of the original nvdata.

As I could NOT delete the .bin and NEITHER get the rw rights (via rootexplorer, adb, anything), I went to formatting the whole efs part with kTool

(market.android.com/details?id=net.hellcat.droiddev.ktool - can't link it because of restrictions of the board). The option for efs format is under the advanced options tab. Before you do that - make sure you get backups of your current efs folder on sdcard AND pc! Without having any .bak files - don't go this way, as things are different than for me, then!

After I formatted the efs (whose filesystem was corrupt I wager) and rebooted, I got the generic efs and the 0049 IMEI. Now at that stage I was able to delete everything and change rights of everything via rootexplorer, so this is when you should start to follow the instructions in the OP again. Totally saved me - and I never had a backup of my efs before I encountered the problem.

Hope that helps, mate!
[Galaxy S II General] OgnenLazarevski:
Hi there i wanna try your method but i cant find .nv_data file in efs folder .... i'm screwed right? or any .bak file on it. :( i'm really sad
[Galaxy S II General] pangiotis24:
i will bookmark this thread.it is useful in case you loose your imei