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[Tools][How-To][Guides] Backup & Restore EFS + Get out from Permanent Safe mode

Note to forum managers: Please make it a Sticky Thread, It should help to all users and there is no use for this tutorial if it is in page 3
Hello XDA Users,
I think some people here know who I am, so I will jump on the "Introduction of myself" for now.
Recently, I have faced many questions & problem of fake IMEI, of damaged EFS folder. So I made a little experiment on my device(GN2).
First, I backuped my EFS folder in 2 types - one is .img and the second is tar.gz.
Then, I deleted my EFS folder using ES Root Explorer. Which made my device to be on somethine called "Permanent Safe Mode" - You can not get out untill you fix your EFS folder and change some values.
This is permanent safe mode:
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After I did my "research" I have managed to make several methods to backup & restore EFS, which should make your life easier and better.
First of all, Disclaimer:
I'm not responsible for any damage caused by using these methods, all methods tested by me, so it should work on your device too.
This is for I9505 Only!!!!!!!
Let's continue.
What you must have:
Latest base with latest modem and latest kernel - very important since in the latest versions samsung prevented the option to install old modems/kernels, so if you install old kernell/modem it can show you wrong IMEI.
Rooted device with the latest Super User
Latest busybox
PhilZ Recovery
Terminal Emulator
Root explorer - Can be ES File Explorer with working root option or just a root explorer from the market
A working EFS backup(In order to restore it...)
Time & Patient.
Important Notes:
When installing/downgrading firmwares, several people suffered from Fake IMEI. This is because the new firmware messed up your EFS folder, which means that you can not restore EFS backup until you are on the latest version, latest modem and latest stock kernel, recommended is XXUBMH1(right to 05/09/2013)
Some custom roms include modem installation in their rom installer. Due to modem flashing in recovery, some devices might get Fake IMEI. My recommendation is before even starting to use this guide, please try to install the latest modem via odin from this thread:
http://forum.xda-developers.com/showthread.php?t=2192025
When installing modem via odin, make sure you select PHONE and not PDA
You will find at least one method that works on your device, so don't give up after one method.
Read all guide and pay attention to all small details.
Backup methods
Method 1 - .img backup
First method, is an automatic backup/restore software.
Special thanks to A.S._id for his software.
The software:
I9505 EFS Backup / Restore
Help to preserve and restore the image of EFS partition:
* Need Root
For Windows
* Extract from the archive, connect the device to the USB debugging mode (System settings/Developer options/USB debugging) and run selected .bat (depending on the backup or restore)
* To retain the image of efs.img must be in a folder with Restore_EFS.bat
* Extract from the archive, connect the device to the USB debugging mode (System settings/Developer options/USB debugging) and run RUN_ME into terminal (double click), select option...
What is EFS, Why it is necessary to backup
Click to expand...
Click to collapse
Method 2 - .img backup
Method number 2 will create you efs.img backup on your internal sd. After that you can copy it to your computer.
What you have to do is this:
Open terminal emulator
Write the following:
Code:
su
Then click enter. It will ask for super user permission, give it permissions.
Then write:
Code:
dd if=/dev/block/mmcblk0p10 of=/sdcard/efs.img bs=4096
Then click enter.
When it finishes, check if you have efs.img on your phone memory. If so, copy it to comupter, if not, you did something wrong try again.
Click to expand...
Click to collapse
Method 3 - .tar.gz backup
This method will compress your efs folder into tar.gz file. This method is the same as choosing backup EFS folder in my rom(PhoeniX ROM)/Omega/Wanam/etc.
A tar.gz backup should look like this(On some devices there might be more files, but this picture was taken from Note II N7100 backup and it fully works):
What you have to do is this:
Download this and copy it to your device:
http://d-h.st/SaK
Reboot into recovery
Flash the zip
Reboot your device.
Connect your device to your pc, and copy the backup in "efs_backup" folder.
Click to expand...
Click to collapse
Restore methods
Now the fun begins
You will have to restore your backup when you have one or more of the folowing problem:
Fake IMEI (usually 004999010640000) or "null" IMEI
Blinking SIM card icon on the top tray… ETC
Unable to unlock your SIM card using your PIN
Fake Serial Number (usually 0000000) or "null" Serial
Unable to register to the network (usually comes with Fake IMEI & Fake Serial so check them.)
Attention please,
If you are 100% that your EFS folder is damaged and you have a working EFS backup with the right IMEI number, my recommendation is this:
With root explorer, go to your efs folder and delete all files inside
Long press on power button will turn off your device.
Then turn on the device, you will be in "Permanent Safe Mode".
Continue to one of the following methods.
Click to expand...
Click to collapse
Method 1 - restore .img backup
First method, is an automatic backup/restore software.
Special thanks to A.S._id for his software.
The software:
I9505 EFS Backup / Restore
Help to preserve and restore the image of EFS partition:
* Need Root
For Windows
* Extract from the archive, connect the device to the USB debugging mode (System settings/Developer options/USB debugging) and run selected .bat (depending on the backup or restore)
* To retain the image of efs.img must be in a folder with Restore_EFS.bat
* Extract from the archive, connect the device to the USB debugging mode (System settings/Developer options/USB debugging) and run RUN_ME into terminal (double click), select option...
What is EFS, Why it is necessary to backup
Click to expand...
Click to collapse
Method 2 - Restore .img backup
Method number 2 will restore your efs.img backup from your internal sd.
What you have to do is this:
Put your efs.img on your phone memory(not external sd card!) in the main memory, not inside folder.
Open terminal emulator
Write the following:
Code:
su
Then click enter. It will ask for super user permission, give it permissions.
Then write:
Code:
dd if=/sdcard/efs.img of=/dev/block/mmcblk0p10 bs=4096
Then click enter.
Now, reboot your device. If you still don't have IMEI/You are still in Safe Mod, reboot again.
In the second reboot, the bootanimation might stuck and the device will reboot automatically again. Don't worry, it is ok because it installs your efs.img.
Click to expand...
Click to collapse
Method 3 - restore .tar.gz backup
This method will restore .tar.gz backup.
A tar.gz backup should look like this(On some devices there might be more files, but this picture was taken from Note II N7100 backup and it fully works):
If you have like this, continue to the guide:
Create on your Phone Memory(Not Extrenal sd!!) a folder called "efsbackup"(without quotes)
Copy all files & folders from the EFS backup into "efsbackup" folder(The files are like in the picture)
Download this script & copy it to your device:
http://d-h.st/zwR
Reboot into recovery
Go to mount section and click on(Very important!):
Mount /efs
Click to expand...
Click to collapse
Now install the script you have downloaded.
After it finishes, reboot.
Now everything should be fixed, of course if your backup is 100% ok.
If it doesn't work, try method 4.
Click to expand...
Click to collapse
Method 4 - restore .tar.gz backup
This method will restore .tar.gz backup.
A tar.gz backup should look like this(On some devices there might be more files, but this picture was taked from Note II N7100 backup and it fully works):
If you have like this, continue to the guide:
Create on your Phone Memory(Not Extrenal sd!!) a folder called "efsbackup"(without quotes)
Copy all files & folders from the EFS backup into "efsbackup" folder(The files are like in the picture)
Using root explorer, go to "efsbackup folder, select all files & folders there, and click Copy.
Still in root explorer, go to "efs" folder of your device(It is located where all main folders like data, system, etc.).
In "efs" folder, click paste. It will ask you if you want to replace your files, select replace to all files(So all your files from "efsbackup" folder will be in "efs" folder)
Now open terminal emulator
Write the following:
Code:
su
Then click enter. It will ask for super user permission, give it permissions.
Now write:
Code:
busybox chown 1001:1001 /efs/nv_data.bin
Then click enter.
Now write:
Code:
busybox chmod 06755 /efs/nv_data.bin
Then click enter.
Reboot device. Now everything should work.
Click to expand...
Click to collapse
Exit "Permanent Safe Mode"
When you in "Permanent Safe Mode" situation, it means that your EFS folder is broken.
If you succeeded in restoring your IMEI and you still stuck in this Safe Mode, use this guide:
Method 1
Open root explorer.
Navigate to /efs/FactoryApp/
Open "factorymode" file as Text and edit it:
Change this:
Code:
OFF
To:
Code:
ON
Open "keystr" file as Text and edit it:
Change this:
Code:
OFF
To:
Code:
ON
Reboot device.
Click to expand...
Click to collapse
Method 2
Open Terminal emulator
Write the following:
Code:
su
Then click enter. It will ask for super user permission, give it permissions.
Write the following & click enter:
Code:
rm /efs/FactoryApp/keystr
Write the following & click enter:
Code:
rm /efs/FactoryApp/factorymode
Write the following & click enter:
Code:
echo -n ON >> /efs/FactoryApp/keystr
Write the following & click enter:
Code:
echo -n ON >> /efs/FactoryApp/factorymode
Write the following & click enter:
Code:
chown 1000.1000 /efs/FactoryApp/keystr
Write the following & click enter:
Code:
chown 1000.1000 /efs/FactoryApp/factorymode
Write the following & click enter:
Code:
chmod 0744 /efs/FactoryApp/keystr
Write the following & click enter:
Code:
chmod 0744 /efs/FactoryApp/factorymode
Reboot your device
Click to expand...
Click to collapse
This is all I can do for you friends, Worked alot on these methods to give you the best information.
Each method was tested by me and fully works.
If this helped you please press the "Thanks" button & Rate this thread 5 Stars.
If you like & appreciate my work please consider a donation!
Credits:
shnizlon
Candanga
A.S._id
dhiru1602
UtkarshGupta
P.M If you think that I forgot you
XDA:DevDB Information
Backup & Restore EFS + Get out from Permanent Safe mode - I9505, a Tool/Utility for the Samsung Galaxy S 4
Contributors
tamirda
Version Information
Status: Stable
Created 2013-09-05
Last Updated 2013-09-05

Amm i guess no one need it?

they do need it and i for one would like to thank you for the guide and time and effort in sharing ..mods and fixes are always welcome on xda thanks man:thumbup::thumbup:
Sent from my GT-I9505 using XDA Premium 4 mobile app

port76 said:
they do need it and i for one would like to thank you for the guide and time and effort in sharing ..mods and fixes are always welcome on xda thanks man:thumbup::thumbup:
Sent from my GT-I9505 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Thanks first real comment in the thread
Sent from my GT-N7100 boosted by PhoeniX ROM

:thumbup:its ok any time my friend ....iv told my friends about the fix and I'm sure they will pop into this very useful and informative thread .. Thanks again iv added it to my subscribed topics and I'm sure people will be popping in to view and post on the thread thanks :thumbup::thumbup:
Sent from my GT-I9505 using XDA Premium 4 mobile app

Nice guide, the command line is the best! :good:

Will heimdall work as an alternative to restore the efs.img? Like this: heimdall flash --efs efs.img ?
It is used from download mode, like odin, so would work even if you cannot boot.

This Method, in Moto x?
tamirda said:
Note to forum managers: Please make it a Sticky Thread, It should help to all users and there is no use for this tutorial if it is in page 3
Hello XDA Users,
I think some people here know who I am, so I will jump on the "Introduction of myself" for now.
Recently, I have faced many questions & problem of fake IMEI, of damaged EFS folder. So I made a little experiment on my device(GN2).
First, I backuped my EFS folder in 2 types - one is .img and the second is tar.gz.
Then, I deleted my EFS folder using ES Root Explorer. Which made my device to be on somethine called "Permanent Safe Mode" - You can not get out untill you fix your EFS folder and change some values.
This is permanent safe mode:
After I did my "research" I have managed to make several methods to backup & restore EFS, which should make your life easier and better.
First of all, Disclaimer:
I'm not responsible for any damage caused by using these methods, all methods tested by me, so it should work on your device too.
This is for I9505 Only!!!!!!!
Let's continue.
What you must have:
Latest base with latest modem and latest kernel - very important since in the latest versions samsung prevented the option to install old modems/kernels, so if you install old kernell/modem it can show you wrong IMEI.
Rooted device with the latest Super User
Latest busybox
PhilZ Recovery
Terminal Emulator
Root explorer - Can be ES File Explorer with working root option or just a root explorer from the market
A working EFS backup(In order to restore it...)
Time & Patient.
Important Notes:
When installing/downgrading firmwares, several people suffered from Fake IMEI. This is because the new firmware messed up your EFS folder, which means that you can not restore EFS backup until you are on the latest version, latest modem and latest stock kernel, recommended is XXUBMH1(right to 05/09/2013)
Some custom roms include modem installation in their rom installer. Due to modem flashing in recovery, some devices might get Fake IMEI. My recommendation is before even starting to use this guide, please try to install the latest modem via odin from this thread:
http://forum.xda-developers.com/showthread.php?t=2192025
When installing modem via odin, make sure you select PHONE and not PDA
You will find at least one method that works on your device, so don't give up after one method.
Read all guide and pay attention to all small details.
Backup methods
Method 1 - .img backup
First method, is an automatic backup/restore software.
Special thanks to A.S._id for his software.
The software:
Method 2 - .img backup
Method number 2 will create you efs.img backup on your internal sd. After that you can copy it to your computer.
What you have to do is this:
Method 3 - .tar.gz backup
This method will compress your efs folder into tar.gz file. This method is the same as choosing backup EFS folder in my rom(PhoeniX ROM)/Omega/Wanam/etc.
A tar.gz backup should look like this(On some devices there might be more files, but this picture was taken from Note II N7100 backup and it fully works):
What you have to do is this:
Restore methods
Now the fun begins
You will have to restore your backup when you have one or more of the folowing problem:
Fake IMEI (usually 004999010640000) or "null" IMEI
Blinking SIM card icon on the top tray… ETC
Unable to unlock your SIM card using your PIN
Fake Serial Number (usually 0000000) or "null" Serial
Unable to register to the network (usually comes with Fake IMEI & Fake Serial so check them.)
Attention please,
If you are 100% that your EFS folder is damaged and you have a working EFS backup with the right IMEI number, my recommendation is this:
Method 1 - restore .img backup
First method, is an automatic backup/restore software.
Special thanks to A.S._id for his software.
The software:
Method 2 - Restore .img backup
Method number 2 will restore your efs.img backup from your internal sd.
What you have to do is this:
Method 3 - restore .tar.gz backup
This method will restore .tar.gz backup.
A tar.gz backup should look like this(On some devices there might be more files, but this picture was taken from Note II N7100 backup and it fully works):
If you have like this, continue to the guide:
Method 4 - restore .tar.gz backup
This method will restore .tar.gz backup.
A tar.gz backup should look like this(On some devices there might be more files, but this picture was taked from Note II N7100 backup and it fully works):
If you have like this, continue to the guide:
Exit "Permanent Safe Mode"
When you in "Permanent Safe Mode" situation, it means that your EFS folder is broken.
If you succeeded in restoring your IMEI and you still stuck in this Safe Mode, use this guide:
Method 1
Method 2
This is all I can do for you friends, Worked alot on these methods to give you the best information.
Each method was tested by me and fully works.
If this helped you please press the "Thanks" button & Rate this thread 5 Stars.
If you like & appreciate my work please consider a donation!
Credits:
shnizlon
Candanga
A.S._id
dhiru1602
UtkarshGupta
P.M If you think that I forgot you
XDA:DevDB Information
Backup & Restore EFS + Get out from Permanent Safe mode - I9505, a Tool/Utility for the Samsung Galaxy S 4
Contributors
tamirda
Version Information
Status: Stable
Created 2013-09-05
Last Updated 2013-09-05
Click to expand...
Click to collapse
Mr Tamirda
The method this, made in terminal, working in one moto x? it's my question

Pika71 said:
Mr Tamirda
The method this, made in terminal, working in one moto x? it's my question
Click to expand...
Click to collapse
?????

slugthru said:
Will heimdall work as an alternative to restore the efs.img? Like this: heimdall flash --efs efs.img ?
It is used from download mode, like odin, so would work even if you cannot boot.
Click to expand...
Click to collapse
You can try and share your experiences.
From my personal experience with another device the dd method in terminal works just fine

Sorry but null IMEI isn't fake IMEI
Difference:
Null IMEI means you don't even have any data for the IMEI oh and it's bad!
fake IMEI means you do have a data which is corrupt. Nothing more only digits has been changed.
There's a different between those
I remember having null IMEI and my backup didn't help at all service center was forced to swap motherboard to get IMEI working.
---------- Post added at 02:26 PM ---------- Previous post was at 02:26 PM ----------
Pika71 said:
Mr Tamirda
The method this, made in terminal, working in one moto x? it's my question
Click to expand...
Click to collapse
It depends if it uses same permission. Also there is a way to fix a corrupt IMEI while in recovery
Also don't quote whole op

My brothers phone is in safe mode could i backup my efs folder and restore onto his device?

ok, i am stuck in factory mode but none of the methods described work because there is nothing in my efs folder - it is empty so there are no files to actually edit.

modem DME4, DMF1

Hello everyone I have a problem with note 2
he flashed the modem DMF1, DME4 and recognizes them with the restore efs folder but when I reboot is imei null and baseband unknown
Solutions?

héllo
in first sorry for my english :silly:
backup your efs file
I made a RAR file with the 2 modem inside
unzip it on the pc or the phone
put the zip files in the sd card
flash via recovery
DMF1_MODEM modem_XXDME4 rar

jioan62 said:
héllo
in first sorry for my english :silly:
backup your efs file
I made a RAR file with the 2 modem inside
unzip it on the pc or the phone
put the zip files in the sd card
flash via recovery
DMF1_MODEM modem_XXDME4 rar
Click to expand...
Click to collapse
thanks for the reply
I will try to flash them, she takes it but when I restart then returns null imei
I do not understand why

mysterionTM said:
thanks for the reply
I will try to flash them, she takes it but when I restart then returns null imei
I do not understand why
Click to expand...
Click to collapse
I already discuseed this, you need to restore your EFS backup after you flash the ROM that you made the backup with.
so flash XXDMF1 with ROM XXDME6 (or DXDMF1) and then restore EFS.
if that didn't work. then flash XXDME4 then OTA update will give you XXDMF1.
If you can't recieve OTA updates and you have Root, then tell me so I send you my XXDMF1 and DME6. (dr.ketan has DXDMF1 which you must try first).
After every flash restore efs then restart to see if it is fixed.

thethiny said:
I already discuseed this, you need to restore your EFS backup after you flash the ROM that you made the backup with.
so flash XXDMF1 with ROM XXDME6 (or DXDMF1) and then restore EFS.
if that didn't work. then flash XXDME4 then OTA update will give you XXDMF1.
If you can't recieve OTA updates and you have Root, then tell me so I send you my XXDMF1 and DME6. (dr.ketan has DXDMF1 which you must try first).
After every flash restore efs then restart to see if it is fixed.
Click to expand...
Click to collapse
if you can put him I would be grateful
but then there is no way to have permanent XXDME4?
With the other note 2 had managed to get it going with this I can not

@mysterionTM
hello
take this and flash via odin pc and updates via OTA or KIES but after do backup efs file
/N7100XXDMB6_N7100OXADMB1_XEF.zip

mysterionTM said:
if you can put him I would be grateful
but then there is no way to have permanent XXDME4?
With the other note 2 had managed to get it going with this I can not
Click to expand...
Click to collapse
first of all make sure your phone is rooted. then download mobile odin Pro (you need Pro version to maintain root or simply root again). then download this file:
http://www.mediafire.com/download/ena68zhyjhwpc78/update.zip
Edit: this will make your mobile a french mobile, so don't flash it just get someone to convert it to a modem.bin or modify it for your country.
now open mobile odin pro and flash the Stock ROM XXDME6.
after it finishes open mobile odin pro again and go to update file, and choose the file you downloaded above. then flash it.
you you have build number XXDME6 and buildbase XXDMF1
now restore EFS by using this app: https://play.google.com/store/apps/details?id=jackpal.androidterm&hl=en
Code:
Put your EFS file on your mobile (External SD Card is preferred on the Root of the Card, so its location should be /storage/extSdCard/efs.img).
name it efs.img for easier use (if it was an img file).
now in the terminal type this:
SU
then grant it superuser permissions.
then type this:
dd if=/storage/extSdCard/efs.img of=/dev/block/mmcblk0p3 bs=4096
it will show you numbers if it was done correctly.
then reboot your phone and everything should work correctly. Reboot again to make sure.
In case it didn't work, then Flash the DME6 ROM, it should come with DXDMF1 , then try restoring EFS again.
tell me what happens with you.

@mysterionTM
what is your configuration of your phone? (your rom)

I put thanks to you both
thethiny said:
first of all make sure your phone is rooted. then download mobile odin Pro (you need Pro version to maintain root or simply root again). then download this file:
http://www.mediafire.com/download/ena68zhyjhwpc78/update.zip
Edit: this will make your mobile a french mobile, so don't flash it just get someone to convert it to a modem.bin or modify it for your country.
now open mobile odin pro and flash the Stock ROM XXDME6.
after it finishes open mobile odin pro again and go to update file, and choose the file you downloaded above. then flash it.
you you have build number XXDME6 and buildbase XXDMF1
now restore EFS by using this app: https://play.google.com/store/apps/details?id=jackpal.androidterm&hl=en
Code:
Put your EFS file on your mobile (External SD Card is preferred on the Root of the Card, so its location should be /storage/extSdCard/efs.img).
name it efs.img for easier use (if it was an img file).
now in the terminal type this:
SU
then grant it superuser permissions.
then type this:
dd if=/storage/extSdCard/efs.img of=/dev/block/mmcblk0p3 bs=4096
it will show you numbers if it was done correctly.
then reboot your phone and everything should work correctly. Reboot again to make sure.
In case it didn't work, then Flash the DME6 ROM, it should come with DXDMF1 , then try restoring EFS again.
tell me what happens with you.
Click to expand...
Click to collapse
excellent guide compliments
but to have the modem DME4 there is no permanent way?
jioan62 said:
@mysterionTM
what is your configuration of your phone? (your rom)
Click to expand...
Click to collapse
DME6

your CSC ?

jioan62 said:
your CSC ?
Click to expand...
Click to collapse
ITVDMF1

go here
http://forum.xda-developers.com/showthread.php?t=1896696

jioan62 said:
go here
http://forum.xda-developers.com/showthread.php?t=1896696
Click to expand...
Click to collapse
I saw it but I was looking for a way to install the modem DME4
I do not understand why it goes and then restart imei returns null
should be something inherent in the nv_data.bin or nv_data.bin.md5
I was looking for a way to fix the folder efs

ITV N7100XXDME6 is this your rom ?
flash via odin pc
download this your stock rom http://hotfile.com/dl/229491057/c20905b/ITV-N7100XXDME6-20130605085627.zip.html

mysterionTM said:
I put thanks to you both
excellent guide compliments
but to have the modem DME4 there is no permanent way?
Click to expand...
Click to collapse
what do you mean permanent way? why would you need DME4 if you have a higher better one?
you can flash DME4 (it comes with ROM DMB4) modem alone and keep it permanently, but if your EFS backup was when you had anything other than DME4 then you can't use it anymore, you have to recover EFS everytime.
just use XXDMF1 (since your CSC is DMF1) and restore EFS. don't see any reason to use an old modem.

jioan62 said:
ITV N7100XXDME6 is this your rom ?
flash via odin pc
download this your stock rom http://hotfile.com/dl/229491057/c20905b/ITV-N7100XXDME6-20130605085627.zip.html
Click to expand...
Click to collapse
yes, it is my rom
but by flashing the stock rom does not solve anything......
thethiny said:
what do you mean permanent way? why would you need DME4 if you have a higher better one?
you can flash DME4 (it comes with ROM DMB4) modem alone and keep it permanently, but if your EFS backup was when you had anything other than DME4 then you can't use it anymore, you have to recover EFS everytime.
just use XXDMF1 (since your CSC is DMF1) and restore EFS. don't see any reason to use an old modem.
Click to expand...
Click to collapse
you're right but with the other note 2 that I had was in the same condition and and I managed to do it !
with this I can not ....
I was leaving the modem DMF1 and I was able to go to the modem DME4 without any problems

mysterionTM said:
yes, it is my rom
but by flashing the stock rom does not solve anything......
you're right but with the other note 2 that I had was in the same condition and and I managed to do it !
with this I can not ....
I was leaving the modem DMF1 and I was able to go to the modem DME4 without any problems
Click to expand...
Click to collapse
on your other phone , you had EFS backup on DME4. on this phone, your backup is on DMF1. DMF can read DME backups, but DME can't read DMF backups because samsung changed the EFS read type on DMF1. so once you go DMF1, your EFS partition is changed permanently!

thethiny said:
on your other phone , you had EFS backup on DME4. on this phone, your backup is on DMF1. DMF can read DME backups, but DME can't read DMF backups because samsung changed the EFS read type on DMF1. so once you go DMF1, your EFS partition is changed permanently!
Click to expand...
Click to collapse
you're wrong
I was only backup on DMF1 on the other note 2
I followed this procedure and are able to put DME4 :
1. make a copy of your EFS folder using root explorer and store it somewhere safe (on your SD card and external SD card should do it).
2. delete the EFS folder from the root of your phone using root explorer.
3. reboot the phone
4. open root explorer and go to the EFS folder (yes, it is still there! The Android OS has generated a new one for us) and delete the following files:
nv_data.bin
nv_data.bin.md5
nv.log
.nv_data.bak
.nv_data.bak.md5
nv_data.bin.bak
and the entire IMEI folder.
5.Now go to your backed up EFS folder on your sd card and copy the IMEI folder and the " .nv_data" file (note the dot) to your new EFS folder.
6.Make another copy of the ".nv_data" file in your new EFS folder. Rename one of them to "nv_data.bin" and the other one to "nv_data.bin.bak".
7. Connect your phone to your PC and start up EFS PRO. After your phone has been detected, press the "Repair nv data" button to correct the ownership and permissions.
8. Reboot your phone into recovery mode using the three botton combo and flash the original modem firmware (the modem.bin file that you extracted earlier) to your phone using Odin (use the "phone" button for the upload) or Heimdall (use the "radio" partition for the modem.bin file upload).
9. Reboot the phone normally and your IMEI number will be restored and you will be able to connect to your mobile network again
but on this note I can not!

mysterionTM said:
you're wrong
I was only backup on DMF1 on the other note 2
I followed this procedure and are able to put DME4 :
1. make a copy of your EFS folder using root explorer and store it somewhere safe (on your SD card and external SD card should do it).
2. delete the EFS folder from the root of your phone using root explorer.
3. reboot the phone
4. open root explorer and go to the EFS folder (yes, it is still there! The Android OS has generated a new one for us) and delete the following files:
nv_data.bin
nv_data.bin.md5
nv.log
.nv_data.bak
.nv_data.bak.md5
nv_data.bin.bak
and the entire IMEI folder.
5.Now go to your backed up EFS folder on your sd card and copy the IMEI folder and the " .nv_data" file (note the dot) to your new EFS folder.
6.Make another copy of the ".nv_data" file in your new EFS folder. Rename one of them to "nv_data.bin" and the other one to "nv_data.bin.bak".
7. Connect your phone to your PC and start up EFS PRO. After your phone has been detected, press the "Repair nv data" button to correct the ownership and permissions.
8. Reboot your phone into recovery mode using the three botton combo and flash the original modem firmware (the modem.bin file that you extracted earlier) to your phone using Odin (use the "phone" button for the upload) or Heimdall (use the "radio" partition for the modem.bin file upload).
9. Reboot the phone normally and your IMEI number will be restored and you will be able to connect to your mobile network again
but on this note I can not!
Click to expand...
Click to collapse
oh, you followed the folder method! then yeah it works, but not recommended as it messed up permissions.
I was speaking about the mmcblk0p3 method.

how to know which modem i need? Im on stock firmware 4.4.2, Malaysia. Have the imei issue/corrupted efs and no backup

[IMEI][efs] SAMSUNG_I9505_EFS_BACKUP/RESTORE

SAMSUNG_I9505_EFS_BACKUP_RESTORE
Instructions:
! Need for backup Root access and debugging USB
1. Extract from the zip and run .bat file
2. Is okay to your PC and follow the menu
Automatically create a text file of all the parameters of the device at the time of the copy
Automatic backup of efs:
* Odin flash file -. tar.md5,
* dd copy - raw.img
* tar.gz archive (need busybox)
Automatic naming (MODEM, SERIAL) of files and backup archive version of the firmware
Restore to choose from archives and backup images
Automatic start of Odin and the transition to the flashing mode when selecting Odin Restore

A.S._id said:
SAMSUNG_I9505_EFS_BACKUP_RESTORE
Instructions:
! Need for backup Root access and debugging USB
1. Extract from the zip and run .bat file
2. Is okay to your PC and follow the menu
Automatically create a text file of all the parameters of the device at the time of the copy
Automatic backup of efs:
* Odin flash file -. tar.md5,
* dd copy - raw.img
* tar.gz archive (need busybox)
Automatic naming (MODEM, SERIAL) of files and backup archive version of the firmware
Restore to choose from archives and backup images
Automatic start of Odin and the transition to the flashing mode when selecting Odin Restore
Click to expand...
Click to collapse
Terminal Like? Download mode?

Hi Do you have the backup of the EFS Folder? please give me one. Thanks!

arczangel said:
Hi Do you have the backup of the EFS Folder? please give me one. Thanks!
Click to expand...
Click to collapse
Imei null?
May i can help you. I have imei backup
Just PM me

sigemblung said:
Imei null?
May i can help you. I have imei backup
Just PM me
Click to expand...
Click to collapse
Pm sent bro, thanks!

arczangel said:
Pm sent bro, thanks!
Click to expand...
Click to collapse
Ur wellcome

sigemblung said:
Imei null?
May i can help you. I have imei backup
Just PM me
Click to expand...
Click to collapse
I am also in need of efs files. Can you please share it to me too? I sent a pm. Thanks in advance.

sigemblung said:
Imei null?
May i can help you. I have imei backup
Just PM me
Click to expand...
Click to collapse
I also need a /efs backup, could you send me? Please

sigemblung said:
Imei null?
May i can help you. I have imei backup
Just PM me
Click to expand...
Click to collapse
I am also in need of efs files
Can you please share it to me too?
Thank you

EFS
Hi Guys
I am also in need of efs files for GT-I9500
Can you please share it to me?
Thank you

Need efs files for i9505 too ) pm?

Hola como están, necesito ayuda con el backup efs de mi S4 I9505. Instale lineage 19.1 y se borra el imei y no tengo señal para llamadas. Gracias
Mod translation via GT: Hello how are you, I need help with the efs backup of my S4 I9505. Install lineage 19.1 and the imei is erased and I have no signal for calls. Thank you

imei null on n7100 4.4.2

My phone was working fine before battery drained and it get switched off. But when i restarted the phone imei was null.
I have efs backup of 4.3 ( mj9 modem) but now i am on 4.4.2 . I tried restoring it but did not worked .
any help please..

sachinwadhwa46 said:
My phone was working fine before battery drained and it get switched off. But when i restarted the phone imei was null.
I have efs backup of 4.3 ( mj9 modem) but now i am on 4.4.2 . I tried restoring it but did not worked .
any help please..
Click to expand...
Click to collapse
try what i did here buddy. . post #3512
http://forum.xda-developers.com/showthread.php?p=57661153#post57661153
do it at tour own risk. goodluck!

edong23 said:
try what i did here buddy. . post #3512
http://forum.xda-developers.com/showthread.php?p=57661153#post57661153
do it at tour own risk. goodluck!
Click to expand...
Click to collapse
Thank you for your reply. Please help me to do this step wise

sachinwadhwa46 said:
Thank you for your reply. Please help me to do this step wise
Click to expand...
Click to collapse
this method works for me, but I am not sure if it will work for you. I have to warn you that I am not a dev, I am just a basic android user. I came up with this idea out of desperation because my phone cannot receive and make calls for almost 4 days. so do this at your own risk.
note:
* make sure your phone is rooted.
* make a copy of your old efs backup and all your important files in your computer or in a flash drive.
1. copy and write on a piece of paper your imei # which will be found at the back of your phone. it is 15 digit
2. copy your efs.img (not the folder that contain the efs image) to your internal storage. it is about 20mb. if there are two files then copy both.
3. connect to wifi and go to playstore and then download and install the IMEI Tool N7100 by Dr Ketan
4. download and install xposed installer and make sure to install update.
5. go to this thread and download and install imei changer
http://forum.xda-developers.com/xposed/modules/xposed-imei-changer-t2847187
make sure to activate it in exposed. then reboot your phone.
6. using ES File Explorer or any file manager with root privelege, go to /efs and delete all files
7. open imei changer then input your imei # (the one that you copied at the back of your pbone) then save. to make sure that your imei has changed dial *#06#. check if your imei if its the one you have written. if not go again to imei changer and change then make sure to save.
8. open IMEI tool by dr. ketan and restore efs backup. it will ask for root privelege so click grant.
9. after restoring efs, reboot to recovery and wipe cache and dalvik then reboot. check if you have data connection.
10. if its not working then go to recovery and make a full wipe and install new touchwiz rom (i used DN4 when I did this, but its up to you whatever you like). and repeat the steps.
* that's all I did mate. there is no scientific explanation about the process that I made, but when I did those things, my phone is working fine again. hopefully it will work for you brother. Good luck and God bless!

edong23 said:
this method works for me, but I am not sure if it will work for you. I have to warn you that I am not a dev, I am just a basic android user. I came up with this idea out of desperation because my phone cannot receive and make calls for almost 4 days. so do this at your own risk.
note:
* make sure your phone is rooted.
* make a copy of your old efs backup and all your important files in your computer or in a flash drive.
1. copy and write on a piece of paper your imei # which will be found at the back of your phone. it is 15 digit
2. copy your efs.img (not the folder that contain the efs image) to your internal storage. it is about 20mb. if there are two files then copy both.
3. connect to wifi and go to playstore and then download and install the IMEI Tool N7100 by Dr Ketan
4. download and install xposed installer and make sure to install update.
5. go to this thread and download and install imei changer
http://forum.xda-developers.com/xposed/modules/xposed-imei-changer-t2847187
make sure to activate it in exposed. then reboot your phone.
6. using ES File Explorer or any file manager with root privelege, go to /efs and delete all files
7. open imei changer then input your imei # (the one that you copied at the back of your pbone) then save. to make sure that your imei has changed dial *#06#. check if your imei if its the one you have written. if not go again to imei changer and change then make sure to save.
8. open IMEI tool by dr. ketan and restore efs backup. it will ask for root privelege so click grant.
9. after restoring efs, reboot to recovery and wipe cache and dalvik then reboot. check if you have data connection.
10. if its not working then go to recovery and make a full wipe and install new touchwiz rom (i used DN4 when I did this, but its up to you whatever you like). and repeat the steps.
* that's all I did mate. there is no scientific explanation about the process that I made, but when I did those things, my phone is working fine again. hopefully it will work for you brother. Good luck and God bless!
Click to expand...
Click to collapse
I followed the same procedure but did not worked.
One more thing i would like to mention that in recent past i got my complete pcb replaced by samsung service center but imei was same. and the backup of efs which i did was on previous pcb/motherboard. could that be the reason i am not able to restore imei?

[IMEI] [FIX] [Noob] [Friendly]

Overview ​
Now, I have seen many people facing problems like lost IMEI or NVRAM warning in their wifi list! Well, these are normal errors when you often flash a custom and wiped system or update using SP Flash Tools. So fix isn't that hard! But still, many people suffer from this! Now, this guide is applicable for every device(MTK) but BPLGU modem file will vary from device to device. I have specially made this guide for Lenovo Vibe K4 Note users!:laugh:
WARNING !!! IMEI CHANGING IS ILLEGAL. THIS GUIDE ONLY HELPS YOU HOW TO RESTORE ORIGINAL IMEI OF YOUR DEVICE! I DONT TAKE ANY RESPONSIBILITY OF ANY ILLEGAL ACTION TAKEN AGAIN YOU! BE AWARE IF YOU ARE NOT SURE FOR WHAT IMEI IS USED FOR ALSO I DONT TAKE ANY RESPONSIBILITY OF DEAD DEVICES/ BRICKS! PLEASE DO SOME RESEARCH IF YOU ARE NOT AWARE OF ANYTHING. HOWEVER, THIS GUIDE WILL HELP YOU DEAL WITH THINGS, IF YOU READ CAREFULLY AND FOLLOW INSTRUCTIONS THEN YOU DONT NEED TO WORRY ABOUT ANYTHING!
Click to expand...
Click to collapse
So lets fix it up !
Required stuffs !
Windows PC (7/8/8.1/10)
Usb Cable
Few tools
Drivers
Your device, ofc !
Download Section !​
1. Scatter files !
2. MauiMETA
3. Temoprary IMEI fix.zip​
Now before we start doing anything make sure you download everything from the download section. Also, make sure your device is having TWRP installed.
Process !​
Now most of you must have thought hey Max where is NVRAM fix? There was nothing about NVRAM in title Well chill down I will target NVRAM NOW !! So let us begin! Now as you have downloaded entire scatter files so NVRAM needs entire scatter files. "Woosh! Thank god it was useful somehow" most of you must have thought Hehehe Well one more thing if you are using permanent NVRAM fix then use it before you flash IMEI or else you lose it again if you fix NVRAM after IMEI. However, a temporary fix can be flashed later on.
* Now navigate to the firmware folder
* Look for scatter file open it in notepad or notepad ++
* There look for this line, "partition_name: NVRAM"
* There you will also notice, "s_download: false"
* Just change it to, "s_download: true"
* Save and exit!
* Open Sp flash tools and load scatter file(Remember a thing, you will have to use an older version of SP Flash Tools)
* You will see checkbox of NVRAM just choose it and keep rest options unchecked!
* Flash into your device and all set!
NVRAM IS FIXED PERMANENTLY :good:
But now for those who are lazy doing this, there is a temporary zip file which you can flash and NVRAM problem will be fixed for a limited time to do so just go to download section and download temporary fix zip file and flash it into TWRP (Yes, that's why we needed TWRP):angel:
Now before we start doing anything make sure you download everything from the download section. Also, make sure your device is having TWRP installed. (YES AGAIN MAKE SURE YOU HAVE EVERYTHING)
• After that, run Maui META 3G
• Use USB COM
• From Options menu, select “Connect smartphone in meta mode”.
• Press Reconnect and connect the phone in the switched off state.
• Wait for a minute. Your Device automatically boots into meta mode. The blinking led will become yellow and you can see "connected with target"
• Now from the drop-down menu select “IMEI download”. Click ok till you see IMEI download box.
• Click Change NVRAM Database FIle and browse to “MT6753 DB” folder and select the following file.
File\MT6753\
BPLGUInfoCustomAppSrcP_MT6753_S00_K5_ROW_LWG_V56_ 1_lwg_n (BPLGU modem file for mt6753, do a double check as the name might change with firmware versions).
[Well I have not extracted this file yet from stock ROM scatter files. However, I have given you the download link of entire stock ROM look the file there itself !]
• Click ok on any warning.
• Leave IMEI Increasemnt 0.
• Write first 14 digits of your IMEI in IMEI box and last 15th digits will go in checksum(should be entered automatically). Eg:- if IMEI is 123456789123456, write 12345678912345 in IMEI and 6 in the checksum. Do same for Sim_2
[Now most of you must be wondering where is my IMEI. I don't remember it and also it's not there in the list. Don't worry pull your back cover and you will see IMEI sticker there just type the same IMEI]
• Press Download To Flash. You will see Download IMEI flash successfully. Now close the box (or alt+f4 or close from task manager if stuck).
• Restart the phone
• Open Dialer and type *#06# and you will get your valid IMEI number.
* Well if you saw the same IMEI then you are done !!! :good:
Credits : Yaas !! Why not ?
meprakash_pyc
Sahil_Sonar
KM (One who made NVRAM fix for lazy people :silly
If this post was helpful to you just hit :good: below my posts !

Drivers ?
Hey Maxx where are our drivers? Well, come on relax as you have downloaded scatter files all the drivers are there you can additionally get extra drivers from my https://forum.xda-developers.com/k4-note/how-to/bootloader-unlock-t3846902 another post [/url] Yes the same one! TWRP one! I have added ADB Drivers there follow the same process also there is a manual how to install drivers same is applicable for these drivers!

after loading that modified scatter file, it says that it should not be treu value

yes bro, after modifying scatter file, flash tool wont allow to load it. im hoping this will fix my wifi issue.

royskeyz said:
yes bro, after modifying scatter file, flash tool wont allow to load it. im hoping this will fix my wifi issue.
Click to expand...
Click to collapse
Actually, I have tested this thing on my own device... No idea what's wrong with you. You can also try notepad c++

jaskoooo said:
after loading that modified scatter file, it says that it should not be treu value
Click to expand...
Click to collapse
royskeyz said:
yes bro, after modifying scatter file, flash tool wont allow to load it. im hoping this will fix my wifi issue.
Click to expand...
Click to collapse
Try older version of SPFT.

I've downloaded your drivers and tried many other drivers,None worked,Please help me.With the drivers i have im able to Flash stock through SP,Device gets detected too,But i dont know y its not working for this tool or SN writer..This is the error im getting..Communication through either RS232 or IPC error,Please reconnect..

JaSomTy said:
Try older version of SPFT.
Click to expand...
Click to collapse
Exactly!

where is nvrm file 's ?
where is nvrm file 's ?

Can anyone tell which version of sp tool worked for them? that would really really be helpful
Edit: Files are no longer available on google drive