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!

[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

[Q] No Imei and "baseband unknown" Please help! Really weird!

So, this is a long process I've been through-- First thanks so much for just taking the time to read this and any input would be awesome
I tried to flash a new slimkat 4.4.2 rom today and it flashed fine came up had service all was well except I think i did it as a "dirty" flash. I don't want to think any errors possible would be from that so i immediately did a "clean" flash and wiped everything except external sd-card in TWRP
Rebooted and noticed i didn't have any signal or data. First thought was modem so I started flashing MJ4 and reboot, nothing, so I flashed MK6 and reboot, nothing, so i changed to CWM recovery and flashed them, nothing, then at this point i just want a phone back doesn't even matter so i always seem to have several ROMS on my phone so i flashed another Sky Note 4.3 and reloaded nothing... So i started really wondering now and looking at my baseband to see what it said and noticed "Unkown Baseband" and Imei "unkown" (All while at work) So I came home did a little research while trying various other roms and none worked. So I read one way is to use Kies and do a "firmware upgrade initialisation"
Now it rebooting and completed going back to 4.1.2 CAMA4 and i still have nothing.. So I flashed UCALJ modem (Which should work as well) and I still have no data or signal because of unknown IMEI and Baseband. I don't really care about using triangle away or not, but i can get around and flash roms and everything thats what I don't understand.
Oh I did use CF-autoroot to install TWRP to install the modem as a .zip
Any ideas I would love you forever!!!

Bradbetheman said:
So, this is a long process I've been through-- First thanks so much for just taking the time to read this and any input would be awesome
I tried to flash a new slimkat 4.4.2 rom today and it flashed fine came up had service all was well except I think i did it as a "dirty" flash. I don't want to think any errors possible would be from that so i immediately did a "clean" flash and wiped everything except external sd-card in TWRP
Rebooted and noticed i didn't have any signal or data. First thought was modem so I started flashing MJ4 and reboot, nothing, so I flashed MK6 and reboot, nothing, so i changed to CWM recovery and flashed them, nothing, then at this point i just want a phone back doesn't even matter so i always seem to have several ROMS on my phone so i flashed another Sky Note 4.3 and reloaded nothing... So i started really wondering now and looking at my baseband to see what it said and noticed "Unkown Baseband" and Imei "unkown" (All while at work) So I came home did a little research while trying various other roms and none worked. So I read one way is to use Kies and do a "firmware upgrade initialisation"
Now it rebooting and completed going back to 4.1.2 CAMA4 and i still have nothing.. So I flashed UCALJ modem (Which should work as well) and I still have no data or signal because of unknown IMEI and Baseband. I don't really care about using triangle away or not, but i can get around and flash roms and everything thats what I don't understand.
Oh I did use CF-autoroot to install TWRP to install the modem as a .zip
Any ideas I would love you forever!!!
Click to expand...
Click to collapse
I gots more love than I know what to do with.....
Do you have a backup of your /efs? Hopefully when (if) you did a backup in TWRP you choose to back up efs also ..... ???

dicksteele said:
I gots more love than I know what to do with.....
Do you have a backup of your /efs? Hopefully when (if) you did a backup in TWRP you choose to back up efs also ..... ???
Click to expand...
Click to collapse
Lesson learned... no backup

I'm going to try and repair (backup and re-put) my EFS folder there, but how do i tell if its a complete EFS folder or if it is damaged? On the note 2 ATT is there a way to manually put in your IMEI? or reasons why this couldn't be my problem please

Bradbetheman said:
I'm going to try and repair (backup and re-put) my EFS folder there, but how do i tell if its a complete EFS folder or if it is damaged? On the note 2 ATT is there a way to manually put in your IMEI? or reasons why this couldn't be my problem please
Click to expand...
Click to collapse
Last time this happened to me, a very long night, I had a guru on hangouts with me and we tried everything we could think of..
Only thing that got me back was a restore of an old backup, as a wild ass last resort.... Lost my mind when it worked
This problem is not weird, unfortunately it's common.
Starting surfing for your error and read read read.... I've had a long fricking day ..
Like a maniac I'm trying to port over a 7100 ROM.. I get that error also.
Only thing that gets it back is restoring a backup rom that had an efs backup in it.

dicksteele said:
Last time this happened to me, a very long night, I had a guru on hangouts with me and we tried everything we could think of..
Only thing that got me back was a restore of an old backup, as a wild ass last resort.... Lost my mind when it worked
This problem is not weird, unfortunately it's common.
Starting surfing for your error and read read read.... I've had a long fricking day ..
Like a maniac I'm trying to port over a 7100 ROM.. I get that error also.
Only thing that gets it back is restoring a backup rom that had an efs backup in it.
Click to expand...
Click to collapse
In my EFS folder i can't find any .nv_**** files so I'm assuming they are gone and I don't have a back-up. I've been reading and reading with nothing coming out of it other then how to fix it on alot of other samsung phones. I can't seem to find a way to re-build and manually enter my own IMEI (because i know the IMEI) Driving me nuts!! but thanks for your reply

EFS folder anyone?
Any chance i can get a copy of someones EFS folder so that i can edit the .nv_data and add my IMIE? Please of a ATT Note 2
Thanks so much and just PM link

Bradbetheman said:
Any chance i can get a copy of someones EFS folder so that i can edit the .nv_data and add my IMIE? Please of a ATT Note 2
Thanks so much and just PM link
Click to expand...
Click to collapse
Sadly no...
It is both illegal...and unethical for someone to give you a copy of an EFS folder...
It contains the user data and carrier information for the device...making the folder private...and unique to it's owner ....g
Sent from my SGH-I317 using XDA Premium 4 mobile app

Have you tried restoring firmware from Kies or flashing official firmware via Odin?
Sent from my GT-I9505G using Tapatalk

nikzDHD said:
Have you tried restoring firmware from Kies or flashing official firmware via Odin?
Sent from my GT-I9505G using Tapatalk
Click to expand...
Click to collapse
I have done official firmware and over odin and before that Kies recovery. Also, knew it wasn't smart but didn't know it was illegal.
Any idea's for programs that will scan for deleted folders? or other ways to re-build EFS or .nvdata?

Bradbetheman said:
I have done official firmware and over odin and before that Kies recovery. Also, knew it wasn't smart but didn't know it was illegal.
Any idea's for programs that will scan for deleted folders? or other ways to re-build EFS or .nvdata?
Click to expand...
Click to collapse
I was going to try this but didn't have to because I found a backup with my efs. I was going to try putting a new sim in and see if phone would see it and rebuild.
Actually was going to pull the sim out of my wife's note 2 and try it.
Sent from my SAMSUNG-SGH-I317 using XDA Premium 4 mobile app

So I tried from my wifes sim today with no avail. Still don't have my phone and wondering if there is any way to recover it? Do i try to set it back to stock everything fix the flash counter then call samsung? I don't think its under warranty anymore since i've had it for almost 2 years. I know its a long shot but I wonder if taking it to one of those "cell phone repair" places would be any help? I'm out of options and actually had to drop back to my old HTC Inspire

Bradbetheman said:
So I tried from my wifes sim today with no avail. Still don't have my phone and wondering if there is any way to recover it? Do i try to set it back to stock everything fix the flash counter then call samsung? I don't think its under warranty anymore since i've had it for almost 2 years. I know its a long shot but I wonder if taking it to one of those "cell phone repair" places would be any help? I'm out of options and actually had to drop back to my old HTC Inspire
Click to expand...
Click to collapse
Yea, the sim deal was to simple to work...
So never heard I don't think. What were you on before you flashed slimkat? Did you do the 4.3 OTA update?

Have you tried flashing an original rom with the Pit file? That's your last resort, EFS is unique to each phone by using someone's else's this is illegal as your modifying the IMEI. I've had efs issues in the past but always had a backup to hand. Try flashing everything with a pit file if that doesn't work then you will have to take it in for repair, Samsung official could do it but don't know what they will charge as it's out of warranty or maybe a local phone repair shop could do it or someone with jtag services can do it perhaps too.
Sent from my GT-I9505G using Tapatalk

nikzDHD said:
Have you tried flashing an original rom with the Pit file? That's your last resort, EFS is unique to each phone by using someone's else's this is illegal as your modifying the IMEI. I've had efs issues in the past but always had a backup to hand. Try flashing everything with a pit file if that doesn't work then you will have to take it in for repair, Samsung official could do it but don't know what they will charge as it's out of warranty or maybe a local phone repair shop could do it or someone with jtag services can do it perhaps too.
Sent from my GT-I9505G using Tapatalk
Click to expand...
Click to collapse
I was on another 4.4 rom before I went to slimkat
What is a pit file? I don't know much about it and is there a "trusted" guide on how to use one with the Note 2? I mean I'm familiar with Odin so I know its there but I've never had to use one

Bradbetheman said:
I was on another 4.4 rom before I went to slimkat
What is a pit file? I don't know much about it and is there a "trusted" guide on how to use one with the Note 2? I mean I'm familiar with Odin so I know its there but I've never had to use one
Click to expand...
Click to collapse
Here's the info...
http://forum.xda-developers.com/showthread.php?t=2609871
A couple of other people are having worse problems like not being able to flash a recovery in ODIN or a ROM saying it can't read partitions. That's a good choice for a PIT flash.
But I'm reading and reading and everything is saying, yep that will work.... IF you then have the efs backup to restore

dicksteele said:
Here's the info...
http://forum.xda-developers.com/showthread.php?t=2609871
A couple of other people are having worse problems like not being able to flash a recovery in ODIN or a ROM saying it can't read partitions. That's a good choice for a PIT flash.
But I'm reading and reading and everything is saying, yep that will work.... IF you then have the efs backup to restore
Click to expand...
Click to collapse
Thanks so much for the help!! I'm just worried that its not going to fix it and only make it worse possibly. I can't find how to pull my PIT file to analyze it so my next option is... Call a professional tomorrow... I'm going to call because apparently a "Z3X box" will fix my phone in like 3 minutes. I will post back though letting people know in the future whether they can or not. Because of legal reasons I don't know if they can even write my own IMEI back to the device. Will post back though regardless after tomorrow when I call them.

This happened to me a while back and I just flashed back to stock using Odin and all was fine
Sent from my GT-N7105 using Tapatalk

GREAT NEWS!
So I got desperate and realized this was going to take a professional. I called around to my local "cell phone repair" shops that really only know how to change the screen and asked about recovering the EFS file. It started out: "Hi can I talk with someone knowledgeable about the Android file system?" and every time the person said they were an "expert" So I said "I deleted or corrupted my EFS file and I need a repair for it" and EVERY time they told me they had no clue what I was talking about. I read and read everything I could find on the internet and most pointed me to some international "send you phone here" and of course I'm very skeptical of shipping my phone just about anywhere. So I found a person in the US at mobiletechvideos.com and looked him up with the BBB and found reviews from multiple sources.
I can say mobiletechvideos.com is legit and awesome! Josh fixed my phone and repaired the IMEI in less the 10 minutes remotely. I have my note 2 back! Please do not hesitate to give this guy a try he is legit and really down to earth guy. This thread can end here because whatever he did I have no clue but it worked!
Also a lot cheaper then I though it was going to be

Bradbetheman said:
GREAT NEWS!
So I got desperate and realized this was going to take a professional. I called around to my local "cell phone repair" shops that really only know how to change the screen and asked about recovering the EFS file. It started out: "Hi can I talk with someone knowledgeable about the Android file system?" and every time the person said they were an "expert" So I said "I deleted or corrupted my EFS file and I need a repair for it" and EVERY time they told me they had no clue what I was talking about. I read and read everything I could find on the internet and most pointed me to some international "send you phone here" and of course I'm very skeptical of shipping my phone just about anywhere. So I found a person in the US at mobiletechvideos.com and looked him up with the BBB and found reviews from multiple sources.
I can say mobiletechvideos.com is legit and awesome! Josh fixed my phone and repaired the IMEI in less the 10 minutes remotely. I have my note 2 back! Please do not hesitate to give this guy a try he is legit and really down to earth guy. This thread can end here because whatever he did I have no clue but it worked!
Also a lot cheaper then I though it was going to be
Click to expand...
Click to collapse
That is great news. Congrats ! How in the world did he do it remotely ?????

[Q] Sudden Wifi and Bluetooth Radios Won't Turn On

Hello,
I have a rooted Tab S 10.5 Wifi that i've had for several months without any issues. I recently took a trip east and at some point over night after playing some netflix, my device's wifi and bluetooth radios have failed to turn on. I have factory reset, completely wiped everything and went to lolipop to no avail. The radios go to turn on, stall for about 1 minute then default back to off. I was running Ironman 1.9 before the sudden fail.
What am i missing? Is there something corrupt beyond the firmware? Is flashing a modem the answer and if so, where do i get them?
Thank you ahead of time for the help

I hope you made a backup of your EFS partition which you can flash before flashing any custom software?
If not you can try EFS Professional and try and repair the efs partition. Select repair NV data.

ashyx said:
I hope you made a backup of your EFS partition which you can flash before flashing any custom software?
If not you can try EFS Professional and try and repair the efs partition. Select repair NV data.
Click to expand...
Click to collapse
I did not. I didn't even know that was such a thing at the time. I did download EFS Pro and tried the NV data repair but it says it's not available for my device. The program reports my baseband as blank.

ReverendMilk said:
I did not. I didn't even know that was such a thing at the time. I did download EFS Pro and tried the NV data repair but it says it's not available for my device. The program reports my baseband as blank.
Click to expand...
Click to collapse
You selected it under the Samsung tools tab?

ashyx said:
You selected it under the Samsung tools tab?
Click to expand...
Click to collapse
I did. the menu on the right side

ReverendMilk said:
I did. the menu on the right side
Click to expand...
Click to collapse
Is your efs partition mountable in twrp?

Hi, did you ever find a solution to the wifi and bluetooth radio problem. I have the same exact problem in my Tab S 10.5.

Wifi & Bluetooth won't turn on Lollipop 8.4LTE!

Bought a Galaxy Tab S 8.4LTE on deal in India, came with Lollipop already updated. But, for the life of me can't figure out how to turn on Bluetooth & Wifi. I press the toggles and they then switch off automatically. The tab is not rooted, Data works just fine. Happened to anybody else? Please let me know.
Waiting for return request to go through the e-commerce site I bought it from, but really like everything about it so don't want to return if I can fix it! Switched from an iPad Mini (1st gen), only option will be to go back to the super-costly iPad Mini 4 when it releases tomorrow and so don't want to do that. Please help!

ویژگی پد بهداشتی مرغوب
Sent from my GT-I9500 using Tapatalk

Did you buy it new?
Download and flash the stock firmware for your device from SamMobile.

Actually flashed 4.4.2 and re-upgraded via Kies, doesn't work . Yes bought new, that is why I can return.

ronjan said:
Actually flashed 4.4.2 and re-upgraded via Kies, doesn't work . Yes bought new, that is why I can return.
Click to expand...
Click to collapse
Have you factory reset?

Yes, wiped cache and data from the recovery menu also to no avail. Funny thing is when I started the tab, both WiFi & Bluetooth were working, though erratic. The tab got restarted and then they stopped working. Have tried every non-root solution published in other device forums also, just doesn't work .

Did you back up your Efs partition.?maybe it is corrupt.

Now that is something new I haven't heard before ? Can you kindly point me in the right direction to do that ! You are ossum to help me out!!

Just rooted my phone and mounted EFS, I can navigate and look inside the folder. How do I know if it is corrupted or not ?

ronjan said:
Just rooted my phone and mounted EFS, I can navigate and look inside the folder. How do I know if it is corrupted or not ?
Click to expand...
Click to collapse
You won't unless you have a backup. Is your imei intact?
Tbh it's not worth messing with this if you can return it.

OK, will not mess up then. IMEI is fine .