Develop Bugs

***WARNING*** PLEASE BACKUP your EFS!!

***WARNING TO ALL***​FLASHING ANY FIRMWARE CAN POTENTIALLY BRICK YOUR DEVICE ​
With that said, PLEASE use some precautionary measures to keep your device alive!​
There are many threads out there about making a backup copy of the "/efs" folder. that folder contains all of your IMEI information that is NOT replaceable! There are several cases all over the web, about people who have lost that information causing them not to have service, leaving them with "generic" IMEI's and some with all "0's"
I am posting this to help prevent thoes who are unaware of the consequences that happen when the EFS information is lost!
Here I will post a few guides and informational threads here in XDA to help with this.
EFS Tool for Windows
Guide for the Galaxy S II
A Story From the Vibrant
From the Galaxy Note​
I would also emphasize on making a nandroid backup of your complete system in recovery before starting to venture off onto any custom rom!
Here the folks at XDA have built a great community with a outstanding reputation to help one another advancing to the next level, also unlocking the extreme potential of our devices.
Be sure to "hit" the thanks button and when possible post a personal "Thanks" to the great devs and contributers we have here in XDA!
Feel free to add to this thread, any useful tips and such...
Thanks and God bless.

I have not yet confirmed this, but here are three links to what may be a way for those who have lost their EFS to repair it!
there are other guides on how to recreate the efs folder but these tools may enable us to insert the correct information!
http://forum.gsmhosting.com/vbb/f611/android-language-editor-android-language-project-1543222/
http://forum.xda-developers.com/showthread.php?t=1570342
Thanks to Pierreone, he has provided this link providing a individual from Poland that can repair your IMEI through TeamViewer for a small donation. This may be out only hope!!
http://forum.samdroid.net/f70/repair-imei-s2-5729/
Please if anyone tries these methods, report here to confirm success or failed!
Thanks.

I just copy and paste in my pc the EFS folder, thats enough? and how you can identify if there is a problem in the EFS?

lorddavid said:
I just copy and paste in my pc the EFS folder, thats enough? and how you can identify if there is a problem in the EFS?
Click to expand...
Click to collapse
That should be enough, but I would make backups in at least to other ways just to be safe, it's better to be safe than sorry. a single file can get corrupt without your knowledge! find a on-line file host like Google drive and that way if your pc was ever to go down it will always be there. Just don't loose your password!!!
to know that there is a problem, check the about phone section in status, the device will show your phone info, look for the IMEI! if it reads all 0's or a generic number starting with "04" and ending like "40000" you have problems! that is a unique serial number that identifies your individual phone!
I'm also not sure that if you were to use it to call an emergency hot line like "911" they would be able to locate you in time! that may not be true tho!

dbrannon79 said:
That should be enough, but I would make backups in at least to other ways just to be safe, it's better to be safe than sorry. a single file can get corrupt without your knowledge! find a on-line file host like Google drive and that way if your pc was ever to go down it will always be there. Just don't loose your password!!!
to know that there is a problem, check the about phone section in status, the device will show your phone info, look for the IMEI! if it reads all 0's or a generic number starting with "04" and ending like "40000" you have problems! that is a unique serial number that identifies your individual phone!
I'm also not sure that if you were to use it to call an emergency hot line like "911" they would be able to locate you in time! that may not be true tho!
Click to expand...
Click to collapse
mines is ok, has al ot of different numbers. Just a question, what ab out the serial number? mines has only 00000000000

lorddavid said:
mines is ok, has al ot of different numbers. Just a question, what ab out the serial number? mines has only 00000000000
Click to expand...
Click to collapse
the serial number so far is not a problem! it's the IMEI that you need to worry about! some refurbished phones and others that have flashed a custom rom will display an all "0's" serial no.
this is simply a helpful warning to make a backup before doing any modding! and finding ways for others to repair what is lost! if your phone is ok, just make a backup and your good!
One day we will figure out how to completely restore a lost efs and edit what is needed to get back to the norm!

Thanks to Pierreone, I added a link to a thread that looks promising and has success reports!!

Whew, I got lucky. I don't have an EFS backup and have flashed several custom ROMs, but I referenced About Phone against the label under the battery and my IMEI is still intact!
Could someone post what the Generic IMEI is so people can know whether their device is intact?
This is a a bigger problem than it sounds, because in some countries, changing the IMEI may be crime and land you jail time! If the IMEI under About Phone doesn't match the under-battery label, you could be in deep ****.

roothorick said:
Could someone post what the Generic IMEI is so people can know whether their device is intact?
Click to expand...
Click to collapse
It is 004999010640000.
Have it, because the unlock made my network disconnect every 10 seconds.

About the efs folder ?
First of all Thank You for the heads up... I'm finding out a lot about backing up the efs folder but not a lot of detail about what exactly is contained in it other than imei and serial... probably because it shouldn't be fooled with but I like to know how things work in detail... is there any detailed post or site where I can get a complete explanation about it ? Complete file list/tree? What else does it control ? Can it be edited ?

EFS Tool for Windows
Click to expand...
Click to collapse
This utility works fine. Just wanted to mention 2 things that you need to set before running this successfully:
Settings -> developer options -> android debugging enabled
Settings ->Developer options-> Root access -> set to 'apps and adb'

I followed the guide from the Galaxy S2 forum, and after the first command:
busybox cp -a /efs /sdcard/efs/
Every line says "can't preserve ownership of..." and "operation not permitted"
Am I doing this right?
I did get an efs folder on my internal storage which is about 5mb in size after that command anyway
The rest of the guide, all of the other commands went through ok.

Holy crap, I wish I had listened to this warning! After flashing a great new rom and getting it 98% set up the way I like it I was deleting some junk apps the marketplace had auto installed, one of them (for wi-fi hotspots I think) was to blame and must have toasted my IMEI.
I thought, oh I'll just restore my CWM backup from an older setup - md5 error can't restore. DOH! After spending most of two days hunting for solutions (none of them linked in this thread worked, except I did get to where I could place calls with a generic IMEI but no data or text). I finally was able to recalculate the md5 manually and restore my old backup, which then got stuck at boot logo, then I flashed a new ROM and the IMEI still isn't back! After much reading I have come to understand NANDROID BACKUPS DO NOT TOUCH THE EFS. That is one thing that that I didn't understand, and the reason I thought I was safe. Please update the OP to state that so more people like me will listen to your advice.
Backup your EFS! Thanks for the warning
Sent from my SGH-I927 using xda app-developers app

Victory!!!! :victory:
I was so close to just paying at http://sam.123unlock.nl/ and using their service to re-write my IMEI (because they show an unlock video using our phone and their software), but I kept digging in XDA and trying everything I could find. I tried the SIII IMEI editor, NV reader-writer, manually restoring the .nv_data.bin, mobiletech videos backup script...blah blah blah. I tried restoring CWM backups, flashing back to stock everything, using kies, I was trying everything! During all this I at times had no IMEI, all 000s, and a generic #, each of which provided different levels of services. I considered keeping the generic IMEI which AT&T didn't seem to mind but then I finally stumbled on a solution.
In reading the http://forum.xda-developers.com/showthread.php?t=859914 post which is linked to in the "A Story From the Vibrant" in the OP I tried the abd EFS tar command and executed it on another Captivate Glide I have that had some water damage but is mostly still functional thinking I could overwrite the entire good EFS of that phone to my good phone with the hosed IMEI. I used AROMA http://forum.xda-developers.com/showthread.php?t=1646108 and deleted the EFS from CWM (I felt like adb and terminal weren't effective since the OS was still awake) and then restored from my working EFS tar, then wrote on top of that the first backup of the hosed EFS I had from before I started messing with it (thinking I'd try that before trying just the other phone's E)FS.
When I rebooted I had the correct serial and IMEI back for the phone! It is now working 100%

I flash alot from to rom, if i use the aroma file manager n save the entire efs folder on my external drive ,if i were to ever run into problems can i go bak to aroma file manager n just restore the efs folder and make everythinfunction again ?

Some guys say yes, others say use the tar command to preserve file permissions. I backed it up both ways. When I used aroma I deleted the files and replaced them rather than over-writing the corrupted ones and it worked fine for me.
Sent from my SGH-I927 using xda app-developers app

So I just got my captivate glide bought it used and I followed thegreatones instructions to get CM 10.1 using the factory image to get it to 4.X then flashing the rom.. and after i flashed CM 10.1 my imei was gone. SIGH. I don't have a backup, which of the paid services works the best? who has tried them?

I managed to make EFS Pro work but the glide is not listed and I don't see any partition to backup. Am I missing something?

Timelord83 said:
So I just got my captivate glide bought it used and I followed thegreatones instructions to get CM 10.1 using the factory image to get it to 4.X then flashing the rom.. and after i flashed CM 10.1 my imei was gone. SIGH. I don't have a backup, which of the paid services works the best? who has tried them?
Click to expand...
Click to collapse
I haven't tried any but I would first give AT&T a call. They can probably assist you. And I believe there's a 14 day return date, I believe AT&T only checks the physical aspects of the phone.
jzamoras said:
I managed to make EFS Pro work but the glide is not listed and I don't see any partition to backup. Am I missing something?
Click to expand...
Click to collapse
It worked for others. Check to make sure you have all Glide drivers installed and reread the OP please Thanks!

Finally I used an older EFS Tool and it worked!

[SOLVED] Help no imei, baseband, or SIM.

So I rooted my AT&T Note 2 SGH-I137 then flashed Omega rom onto it, after flashing my network wouldn't work at all. I restored using CWM but my imei, baseband, and all that turned up with unknown. I did back up my efs folder when I flashed. My efs folder is now empty, but my backup folder has a dated tar.gz file in it.
Somebody please help me get my phone back up and please don't tell me I just bricked my new phone. Any help is greatly appreciated.
Sratch that my efs file is not empty, I checked it with a different file manager so now I really don't have any idea whats going on with it. Someone please help me out.

http://forum.xda-developers.com/showthread.php?t=2004650
try to flash a stock ROM via Odin, it should fix all your problems.

I swear someone does this every week
Sent from Admiral Ackbar

Yeah this was very boneheaded on my part. I searched the best I could before posting. Should I save the backup to my computer before flashing?
Oh thank god it worked. I can't thank you enough, I can breath now lol. Thank you again for the quick and easy answer.

by any chance were you on an Iphone before the Note?

Nope Blackberry. I'll admit that incompetence cracks are probably just, but I'm an almost exclusive Linux, so coming from an OS where major problems are pretty much fatal I kinda panicked when this happened and I couldn't find a direct answer within ~4 hours. Also is there a way I should mark this thread as solved?

brandoningram21 said:
Nope Blackberry. I'll admit that incompetence cracks are probably just, but I'm an almost exclusive Linux, so coming from an OS where major problems are pretty much fatal I kinda panicked when this happened and I couldn't find a direct answer within ~4 hours. Also is there a way I should mark this thread as solved?
Click to expand...
Click to collapse
Edit your first post and change the title
Sent from my SAMSUNG-SGH-I317 using xda premium

Various issues after root

Hello all, concerned that I've messed up my phone after using the Galaxy Note 2 Toolkit 3.0.0] and using 2-2-2 for my N7100 (JRO03C.N7100XXALIJ) on Vodafone UK.
Upon reset from ODIN flash (whch showed pass) my phone no longer has IMEI number, ERI, etc. thus no longer able to make calls and the like. Storage on the device also looks totally b0rked; currently showing 359mb used by applications in storage options and 0.00B total space. Looking bad in Windows too;
So far I've tried a factory reset via *2767*3855#, which resulted in stock apps being installed but still the same storage problems and no IMEI, 2-6 stock flash in the Toolkit and a re-root via 2-2-2. I don't wish to do any more damage so leaving it there until someone can advise me on how to get my phone working again. At this stage I'm not caring if it's rooted or unrooted just no longer an expensive and small web browser.
If anyone can help it'd be most appreciated.

Re: [Q]
GoaThief said:
Hello all, concerned that I've messed up my phone after using the Galaxy Note 2 Toolkit 3.0.0] and using 2-2-2 for my N7100 (JRO03C.N7100XXALIJ) on Vodafone UK.
Upon reset from ODIN flash (whch showed pass) my phone no longer has IMEI number, ERI, etc. thus no longer able to make calls and the like. Storage on the device also looks totally b0rked; currently showing 359mb used by applications in storage options and 0.00B total space. Looking bad in Windows too;
So far I've tried a factory reset via *2767*3855#, which resulted in stock apps being installed but still the same storage problems and no IMEI, 2-6 stock flash in the Toolkit and a re-root via 2-2-2. I don't wish to do any more damage so leaving it there until someone can advise me on how to get my phone working again. At this stage I'm not caring if it's rooted or unrooted just no longer an expensive and small web browser.
If anyone can help it'd be most appreciated.
Click to expand...
Click to collapse
Do you have a backup of your efi?
Sent from the Rabbit Hole

bushako said:
Do you have a backup of your efi?
Sent from the Rabbit Hole
Click to expand...
Click to collapse
Efi? Not sure what you mean by that but no, I don't think so. I have the IMEI number and that's about it.
Just noticed that the thread title has gone AWOL too, not my day!

Anyone have any ideas? Really need to get it fixed. :crying:

So you don't have an efs backup.
Did you even read anything before rooting. It clearly says to make an efs backup.
From what you have written you don't have one and it's unique to your phone so nothing can be done about it.
Reset counter and flash stock rom.
Sent from my GT-N7100 using xda app-developers app

UtkarshGupta said:
So you don't have an efs backup.
Did you even read anything before rooting. It clearly says to make an efs backup.
From what you have written you don't have one and it's unique to your phone so nothing can be done about it.
Reset counter and flash stock rom.
Sent from my GT-N7100 using xda app-developers app
Click to expand...
Click to collapse
Yes I did, the sticky thread said nothing about an efs backup before rooting? Neither did the video. Would it be possible to use the guide from here and root with stoxk rom at same time?
http://forum.xda-developers.com/showthread.php?t=1896696
The stock Vodafone uk rom from that thread appears to have a different build number, would that be ok? Maybe that was the problem in the first place?

Yes you can flash any rom from thread you mentioned, as well can follow same thread post#2 to root, if you had follow that, i have advised in red colour 'first thing to do after rooting is efs backup'
Alternatively look this too
www.cvxcvx.pl/podstrona-0/naprawa-efs-w-i9100-n7000?lang=en
Sent from my GT-N7100 using xda premium

Thanks for the replies, flashed stock rom and rooted staying well clear of the toolkit and everything went well. Should have done it manually in the first place haha.
Got a chance to make a EFS backup too. Happy days.

GoaThief said:
Thanks for the replies, flashed stock rom and rooted staying well clear of the toolkit and everything went well. Should have done it manually in the first place haha.
Got a chance to make a EFS backup too. Happy days.
Click to expand...
Click to collapse
That's why it's better to do it yourself so you know what you are doing.
Sent from my GT-N7100 using xda app-developers app

[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
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That is great news. Congrats ! How in the world did he do it remotely ?????

Request for EFS partition to be Shared

Hi ,
I have an LG G2 - LS980 and I messed up my EFS partition , and I really didnt back it up like i should have !
I have everything in order though , after flashing back my IMEI using the method here. Thanks to @kingroach and @Lifoo . Expect that it will no longer connect to 3G/4G and remains only at 2G/GSM .
I may need to reflash the EFS partition to ensure i fix this. If you could share the EFS partition from your backup via PM it would help tremendously.
Details of backing up your partition are mentioned here

kryptonite said:
Hi ,
I have an LG G2 - LS980 and I messed up my EFS partition , and I really didnt back it up like i should have !
I have everything in order though , after flashing back my IMEI using the method here. Thanks to @kingroach and @Lifoo . Expect that it will no longer connect to 3G/4G and remains only at 2G/GSM .
I may need to reflash the EFS partition to ensure i fix this. If you could share the EFS partition from your backup via PM it would help tremendously.
Details of backing up your partition are mentioned here
Click to expand...
Click to collapse
Getting this for you now.

Demonlinx said:
Getting this for you now.
Here you go man.
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Thank you very much , could you please edit your post and remove the link so that its not public.

Still no luck , I am stuck on 2G and cannot get onto 3G/4G with my phone. Any more clues ?

Your best bet is to TOT back to full stock.

This thread got me scratching my head SEVERAL times. Till now I have been certain that your EFS contained your IMEI. Can you guys check whether you got the same IMEI now?

kryptonite said:
Thank you very much , could you please edit your post and remove the link so that its not public.
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Maybe you should edit yours as well since you're keeping his EFS file public lol

Yes i have made the edit. I am stumped too. Even i thought EFS is what contained the IMEI !
My challenge now I guess is MEID .

Demonlinx said:
Getting this for you now.
Click to expand...
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Thanks for the help so far. I still need some more help on this . Could you (or anyone using Sprint - LG - G2 ) please help back up these partitions and send them to me.
Attached a ZIP file to help make the backup easy.
Connect your phone in usb debug mode to PC .
Unzip and run the batch file LG_BCK.bat and once its done , takes 5-6 mins, please help share the files located in the resulting LGBCK folder.
This will help me understand what else is needed other than EFS , modem partitions to backup the IMEI and other data.
FYI "Partitions NOT backed up are system, cache, userdata to ensure privacy of data" :good:
Also please share the resulting files via PM rather than posting a public link here.

Also note the resulting files in LGBCK folder amounts to ~439MB , if you rar this folder , it will be compressed to 70 MB which is much easier to share !

kryptonite said:
Also note the resulting files in LGBCK folder amounts to ~439MB , if you rar this folder , it will be compressed to 70 MB which is much easier to share !
Click to expand...
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I can look into doing this for you sometime in the next 12-18 hours. I'm away from the computer until then.
Sent from my LG-LS980 using XDA Premium 4 mobile app

Demonlinx said:
I can look into doing this for you sometime in the next 12-18 hours. I'm away from the computer until then.
Sent from my LG-LS980 using XDA Premium 4 mobile app
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Thank you very much ! Appreciate it.
Also attached version 1.0 of the backup script . There are 2 options now.
1. Core backup (This does not back up system , userdata and cache) . Good for a quick backup of all partitions .
2. Full backup (Includes every partition).

Demonlinx said:
I can look into doing this for you sometime in the next 12-18 hours. I'm away from the computer until then.
Sent from my LG-LS980 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Sorry to be bothering you, but wanted to check if you got the chance to get to this. If you cant please let me know as well.
My next plan is to go in for a LG G3 if i cannot get this working .

kryptonite said:
Sorry to be bothering you, but wanted to check if you got the chance to get to this. If you cant please let me know as well.
My next plan is to go in for a LG G3 if i cannot get this working .
Click to expand...
Click to collapse
Your fine man, I've just been really busy with school and work and have totally spaced this. I will try to get you this in 5 ish hours. can you send me a PM with an email I can reach you at to send you a link to my google drive instead of linking it in the forum.
Edit: when trying to run that bat all I get is a black command prompt screen that pops up then quickly goes away.. Idk what's happening or going wrong.

Demonlinx said:
Edit: when trying to run that bat all I get is a black command prompt screen that pops up then quickly goes away.. Idk what's happening or going wrong.
Click to expand...
Click to collapse
Are you using this version ? Adb_Backupv1.zip ?
Could you open a command prompt and browse to that directory and manually run the .bat file to see what the error may be ?
I have PMed you with my email details.

Can anyone help me i need the efs partition i didnt backup mine
I dont have conection of any kind if not i have to return to a tot flash procedure and im away from my computer and going to get it until 2 weeks.
Thanks to everybody.

kryptonite said:
Yes i have made the edit. I am stumped too. Even i thought EFS is what contained the IMEI !
My challenge now I guess is MEID .
Click to expand...
Click to collapse
Doesn't it contain IMEI? Every google search says it does.
Sent from my LG-LS980 using XDA Free mobile app

If you're trying to write your meid you will need to use cdma dfs or cdma workshop to write it manually if you have your msl and have the meid dec from the back cover of the phone. I have a link to a site that calculates everything but your imei from the meid dec, but I'm not home with all my bookmarks.