I created a tool a while back for Galaxy S II owners to backup and restore the '/efs' partition and perform basic NV Repair on their devices.
This proved so popular that I recently updated the application which now includes a feature to automatically detect the mount point of the '/efs' partition. This allows any supported device to be used with EFS Pro and also adds support for future devices.
Check out the link below for more info and download:
http://forum.xda-developers.com/showthread.php?p=18524176
Enjoy!
Sent from my GT-I9100 using Tapatalk 2
Nice to see you here lyriquidperfection. Used your tool for my S2 few months ago. Works wonders. Cheers!
I actually spot your program a few days back in the GSII forum, the EFS file seems small, should not be a problem right?
Mach3.2 said:
I actually spot your program a few days back in the GSII forum, the EFS file seems small, should not be a problem right?
Click to expand...
Click to collapse
Tar file should be around 5mb and Image file should be around 20mb.
Sent from my GT-I9100 using Tapatalk 2
lyriquidperfection said:
Tar file should be around 5mb and Image file should be around 20mb.
Sent from my GT-I9100 using Tapatalk 2
Click to expand...
Click to collapse
Hmmmm, then I may have a problem..
Let me try again.
Sent from my Galaxy Nexus using XDA
Not working with my Nexus. It gives the error operation failed at the time of detecting the EFS partition on the phone.
Running AOKP M5 and the phone is GSM
Guys,
for those of you having issues with the app, just do it yourself. It's not like it's complicated:
su
dd if=/dev/block/platform/omap/omap_hsmmc.0/by-name/efs of=/sdcard/efs.img
Done. The file will be called efs.img in /sdcard.
efrant said:
Guys,
for those of you having issues with the app, just do it yourself. It's not like it's complicated:
su
dd if=/dev/block/platform/omap/omap_hsmmc.0/by-name/efs of=/sdcard/efs.img
Done. The file will be called efs.img in /sdcard.
Click to expand...
Click to collapse
Actually had a proper back up already, just toying with the programme.
Pressed from my Maguro
EFS Pro has now been updated to v1.8.3.
Nexus S / Galaxy Nexus support has now been fixed hopefully.
Differences in the 'efs' location, name and partition layout was causing issues.
Please test this new version and post your feedback please as I dont have a physical device to test on.
,,,
There's another app I know of that claims to be able to back up and restore efs on the gnex and some other galaxy devices. It's called kTool and you can read about it here:
http://forum.xda-developers.com/showthread.php?t=1314719
or search for it on Playstore.
It seems to back it up OK, but I hesitate to do a test restore, since a problem there could permabrick the phone. Has anyone actually personally verified that kTool restores the efs partition reliably?
strumcat said:
There's another app I know of that claims to be able to back up and restore efs on the gnex and some other galaxy devices. It's called kTool and you can read about it here:
http://forum.xda-developers.com/showthread.php?t=1314719
or search for it on Playstore.
It seems to back it up OK, but I hesitate to do a test restore, since a problem there could permabrick the phone. Has anyone actually personally verified that kTool restores the efs partition reliably?
Click to expand...
Click to collapse
No claims about my tool! EFS Pro does exactly what it says on the tin! Tested all functions myself!
Sent from my HTC Desire S using Tapatalk 2
efrant said:
Guys,
for those of you having issues with the app, just do it yourself. It's not like it's complicated:
su
dd if=/dev/block/platform/omap/omap_hsmmc.0/by-name/efs of=/sdcard/efs.img
Done. The file will be called efs.img in /sdcard.
Click to expand...
Click to collapse
Hi, efrant. I assume the efs partition or IMEI is checksummed somewhere in such a way that you couldn't simply dump the efs, alter the IMEI with a hex editor, and write it back?
---------- Post added at 02:09 PM ---------- Previous post was at 02:00 PM ----------
lyriquidperfection said:
No claims about my tool! EFS Pro does exactly what it says on the tin! Tested all functions myself!
Sent from my HTC Desire S using Tapatalk 2
Click to expand...
Click to collapse
Heh, OK thanks.
strumcat said:
Hi, efrant. I assume the efs partition or IMEI is checksummed somewhere in such a way that you couldn't simply dump the efs, alter the IMEI with a hex editor, and write it back?
Click to expand...
Click to collapse
That's an excellent question. It is and it isn't. Have a read of this thread. (I honestly haven't really looked into, but I guess I could if there is a need for it. And I don't really want to get myself or XDA in trouble by talking about cloned IMEIs. )
Yup. Ditto.
thanks for your efforts putting this together OP.
suggestion: this could be moved to themes & apps, perhaps?
Backup thru Recovery ??
Sir,
Full On respect for ur Creations.:angel::angel::angel::angel:
My phone is bootlooping. Softbricked.
Before i do anythng i want to back up efs. Pls help me out. :fingers-crossed:
P6200 Samsung tab 7 plus
Can get into recovery n download mode.
How to back up. For backup wid EFS Pro phone should boot into ROM rite.
Any way to backup thru recovery????
Thank you
maverix13 said:
Sir,
Full On respect for ur Creations.:angel::angel::angel::angel:
My phone is bootlooping. Softbricked.
Before i do anythng i want to back up efs. Pls help me out. :fingers-crossed:
P6200 Samsung tab 7 plus
Can get into recovery n download mode.
How to back up. For backup wid EFS Pro phone should boot into ROM rite.
Any way to backup thru recovery????
Thank you
Click to expand...
Click to collapse
You can flash TWRP 2.2.2.0 recovery and boot it. It has an option to back up efs.
strumcat said:
You can flash TWRP 2.2.2.0 recovery and boot it. It has an option to back up efs.
Click to expand...
Click to collapse
Yea just use twrp
Sent from my Galaxy Nexus using Tapatalk 2
Hi
I having a huge problem, i restored efs img through efs pro (latest version) and it mounted and pushed files ok, but before it finished it wrot efs backup is corrupted (or similar) do not use this backup.. and then rebooted phone - and since there have been NO way to mount/delete/format the efs dir on sd, cant root, install rom from cwm or anything because its totally locked it seems, installed twrp 2.3.3.0 and its working, but im not able to mount efs dir from here either , i tried format all data/cache/system/sd but still unable to mount efs it says????
and says there is no sim card even there is.
Only thing i can is flash stock rom from sammy but not latest v 4.1.1 only v 4.0.4 then it boots to os but tells me its in factory mode (no wi-fi bla)
if i flash 4.1.1 its gets stuck on galaxy boot logo - tried flashing syiah 1.86 through odin but just hangs on siyah logo!!!
What do i do ? is the phone softbricked or what PLZ help out - big thanx in advance
Related
DISCLAIMER
Thank you to all the DEV'S who have made this possible.
waydownsouth,
gh123man,
hbwelch,
randomblame,
shchers,
Koush
I am in no way responsible for any damage done to your tablet. Follow the instructions!
-----------------------------------------------------------------------------
Here it is guys, Stock CWM Recovery for the ACER A100.
Before anything make sure you have the latest ICS leak C/O Vache, Root, and Unlocked Bootloader.
Official ICS Leak c/o Vache:
http://forum.xda-developers.com/showthread.php?t=1510706
Root Instructions here:
http://forum.xda-developers.com/showthread.php?t=1531646
Unlock your bootloader for fastboot, follow here:
http://forum.xda-developers.com/showthread.php?t=1557445
once you have done all of the above, you should be ready to flash this recovery. Make sure you have ADB up and working properly. And place the recovery.img in your working folder (see below)
1- Open a command prompt in your working folder (usually in your platform tools, mine is C:\android-sdk-windows\platform-tools) make sure you are administrator.
2- Connect Tablet to pc and get excited.
3- Type: adb devices (verify your Tab is connected and listed)
4- Type: adb reboot bootloader
5- Once bootloader is in fastboot type: fastboot flash recovery recovery.img
You will see writing recovery, flashing recovery, etc.
6- Once flashed Type: fastboot reboot
7- Profit
This recovery has been tested by myself, and is the first in a series of goodies coming please be patient, dont ask for ETA's as the DEV's are EXTREMELY hard at work and don't even have this device themselves. Big THANKS to all of them!
Now keep in mind most mistakes are made in the location of where you opened the command prompt, just be sure the recovery.img is in the folder you are working in with the command prompt. If it isn't, well, it wont flash anything.
Download CWM Recovery 5.5.0.4 for A100: http://www.mediafire.com/?sgkiz31lg2jd19v
Download A100 ICS Gapps: http://www.mediafire.com/?db2rl0z6v8xc2a8
Follow A100 CM9 progress...Original thread here ---> http://forum.xda-developers.com/showthread.php?t=1597102
Please Hit thanks button of everyone involved, this couldn't be possible without this great community.
First . Testing right now.
Edit: Looking good . One thing... I messed up step 2. I got excited before connecting the device .
Theonew said:
First . Testing right now.
Edit: Looking good . One thing... I messed up step 2. I got excited before connecting the device .
Click to expand...
Click to collapse
lol :-D haha right on man glad my instructions are good. always hard to do a step by step of something you do daily lol. thanks for the feedback! be sure to thank our devs as well.
Sent from my SGH-I897 using xda premium
Well couldn't test much, but everything seems honky dory
One question, should we expect the recovery to be touch enabled later on? .. yeah I know we have buttons, but the touch enabled recoveries are simply cooler anyways, thanks a bunch guys.
ptesmoke said:
thanks for the feedback!
Click to expand...
Click to collapse
The backup is far larger than the ones of the first recovery provided.
Theonew said:
The backup is far larger than the ones of the first recovery provided.
Click to expand...
Click to collapse
could be backing up more data. I think the old Thor recovery had some partitions missing. I will look into it though. pretty sure the old one didn't backup /flexrom which I think the new one does..but I'm not using a flexrom ATM.
Sent from my SGH-I897 using xda premium
Works great thank you very much
ptesmoke said:
could be backing up more data. I think the old Thor recovery had some partitions missing. I will look into it though. pretty sure the old one didn't backup /flexrom which I think the new one does..but I'm not using a flexrom ATM.
Sent from my SGH-I897 using xda premium
Click to expand...
Click to collapse
That must be why. The previous recovery made backup sizes of approx. 1.1Gb; This makes backups of well over 2Gb (Bar didn't even reach half way as yet when it hit the 2Gb mark ).
Working great.
Just in case anyone is wondering, flashed fine running flex-100-reaper and crossix SD swap mod.
illego said:
Working great.
Just in case anyone is wondering, flashed fine running flex-100-reaper and crossix SD swap mod.
Click to expand...
Click to collapse
yes i forgot to add. if you are on flexreaper it will work..as you should already have root and unlocked bootloader to get there :-D thanks for verifying though!
i don't want anyone to think they need to reflash the leak and root and unlock again to do this. as long as your on the ics bootloaders and unlocked then your good...no matter what rom you have loaded.
Sent from my SGH-I897 using xda premium
Theonew said:
That must be why. The previous recovery made backup sizes of approx. 1.1Gb; This makes backups of well over 2Gb (Bar didn't even reach half way as yet when it hit the 2Gb mark ).
Click to expand...
Click to collapse
Just ran the whole backup.
Old backup: 1.4Gb
New backup: 4.0Gb
illego said:
Just ran the whole backup.
Old backup: 1.4Gb
New backup: 4.0Gb
Click to expand...
Click to collapse
looking into it..may not be .tar
Sent from my SGH-I897 using xda premium
ptesmoke said:
looking into it..may not be .tar
Sent from my SGH-I897 using xda premium
Click to expand...
Click to collapse
It is ".tar".
Theonew said:
It is ".tar".
Click to expand...
Click to collapse
k so my backup is 300mb...
but I'm not on a flex rom. do me a favour do a backup and once done do an " adb logcat > logcat.txt " and pm me the txt file..plz
Sent from my SGH-I897 using xda premium
ptesmoke said:
k so my backup is 300mb...
but I'm not on a flex rom. do me a favour do a backup and once done do an " adb logcat > logcat.txt " and pm me the txt file..plz
Sent from my SGH-I897 using xda premium
Click to expand...
Click to collapse
A full backup or just /data?
Theonew said:
A full backup or just /data?
Click to expand...
Click to collapse
My guess would be repeat the process that netted you a 4 gb backup
Sent from my Kindle Fire using Tapatalk 2
jamminjon82 said:
My guess would be repeat the process that netted you a 4 gb backup
Sent from my Kindle Fire using Tapatalk 2
Click to expand...
Click to collapse
Wasn't me. Anyways, that would be a full backup.
anyone on a flex rom. so anyone :-D and yes full backup plz.
Sent from my SGH-I897 using xda premium
edit: nvm dont need log. looks like its backing up the /data/media partition
stay tuned.....workin on it. I didnt notice as i wiped all my partitions...hence my low backup size.
ptesmoke said:
anyone on a flex rom. so anyone :-D and yes full backup plz.
Sent from my SGH-I897 using xda premium
edit: nvm dont need log. looks like its backing up the /data/media partition
stay tuned.....workin on it. I didnt notice as i wiped all my partitions...hence my low backup size.
Click to expand...
Click to collapse
I was going to say my backup was the right size on Flexrom A100, but it would make sense because I use the Micro SD card swap mod. So my /data/media is empty while in CWM.
Gibson.Dubs said:
I was going to say my backup was the right size on Flexrom A100, but it would make sense because I use the Micro SD card swap mod. So my /data/media is empty while in CWM.
Click to expand...
Click to collapse
your 100% correct :-D . working on a fix right now. any other bugs? can everyone mount USB in recovery? mine doesn't work but I'm having mtp driver issues last few days
Sent from my SGH-I897 using xda premium
Hello, I need serious help :/
After flashing Paranoid 3.6 into my device, I lost mobile network. So I came back to stock 4.1.2.
I wasn't backup efs file before flashing. As you can see, it displays wrong imei/serial number and etc.
I can not find EFS backup in my device using this method - http://forum.xda-developers.com/showthread.php?t=2356658
Look around mate, there is a guide in this section named (GUIDE) EFS/.....
Sent from my GT-N7100 using xda premium
nitol said:
Look around mate, there is a guide in this section named (GUIDE) EFS/.....
Sent from my GT-N7100 using xda premium
Click to expand...
Click to collapse
That guide isn't work for me, I have tried.
MantasLTU said:
That guide isn't work for me, I have tried.
Click to expand...
Click to collapse
Did you search your entire device for the folder efs_Backup? It should create automatically. If you don't find that. Use note2 toolkit and restock.
Sent from my GT-N7100 using xda premium
Hi.. Exactly the same as my problem.. Even changed imei is the same.. Which recovery do you use? I use twrp recovery and it backup efs. I just restore imei with twrp and everything went fine..
Sent from my GT-N7100 using xda app-developers app
MantasLTU said:
Hello, I need serious help :/
After flashing Paranoid 3.6 into my device, I lost mobile network. So I came back to stock 4.1.2.
I wasn't backup efs file before flashing. As you can see, it displays wrong imei/serial number and etc.
I can not find EFS backup in my device using this method - http://forum.xda-developers.com/showthread.php?t=2356658
Click to expand...
Click to collapse
Hi,
Exactly the same issue, my imei number went to same as yours ending with 0000. I don't have efs backup and i am a newbie too. but still i have tried restocking the rom using ODIN but didn't help. any help on this will be much appreciated. I can't access network due to serial number is corrupted.
szquadri said:
Hi,
Exactly the same issue, my imei number went to same as yours ending with 0000. I don't have efs backup and i am a newbie too. but still i have tried restocking the rom using ODIN but didn't help. any help on this will be much appreciated. I can't access network due to serial number is corrupted.
Click to expand...
Click to collapse
number 1 rule, to do backup before flashing anything.
there is sticky guide in general.
flash new modem and bootloader, it should fix it
yaro666 said:
number 1 rule, to do backup before flashing anything.
there is sticky guide in general.
flash new modem and bootloader, it should fix it
Click to expand...
Click to collapse
I have a phone backup not the EFS backup. The Imei got corrupted all of a sudden. Next time i'll keep a EFS backup. i have few stock roms but i don't have Modem / recovery Roms and i found this thread " http://forum.xda-developers.com/showpost.php?p=31986738&postcount=6 " but the links are dead. You got any links to download stock ROMS along with Modem / Recovery / Bootloader , then please do share. Also, ROM links are slow if you can provide fast meta link that would help.
szquadri said:
I have a phone backup not the EFS backup. The Imei got corrupted all of a sudden. Next time i'll keep a EFS backup. i have few stock roms but i don't have Modem / recovery Roms and i found this thread " http://forum.xda-developers.com/showpost.php?p=31986738&postcount=6 " but the links are dead. You got any links to download stock ROMS along with Modem / Recovery / Bootloader , then please do share. Also, ROM links are slow if you can provide fast meta link that would help.
Click to expand...
Click to collapse
use sammobile, the newest modem is OE1 or sth like that. bootloader is somewhere hetr. thetr is sticky bootloader guide thread
I went back to the stock rom on my Galaxy Note 2 (Telus i317m) and now my IMEI, IMEI SV, memory and baseband are no longer registering so I am unable to use my phone and no internal memory available. I have tried everything I can think of. I backed up my IMEI and EFS and NV. When I plug my phone into the PC with NV items reader writer, QPST, EFS Pro my phone is recognized and then when I try to write the NV data to the phone it is no longer found by all programs. I cannot install busybox because my internal memory is no available and tried to an SD card, but it won't install on the SD card. I followed eveything to the dot or at least I thought I did. I have done this before with the S3 with no issues. Below are images of what my phone shows. TIA.
did you "NAND ERASE ALL" when you were flashing your stock rom through ODIN?
Did you format your system?
Sent from my SAMSUNG-SGH-I317 using xda premium
Can you still access recovery?
ssingh819 said:
did you "NAND ERASE ALL" when you were flashing your stock rom through ODIN?
Click to expand...
Click to collapse
don't think I did but then again I might have by mistake.
jon3sh said:
Can you still access recovery?
Click to expand...
Click to collapse
yes I can still access recovery.
daredevil061305 said:
Did you format your system?
Sent from my SAMSUNG-SGH-I317 using xda premium
Click to expand...
Click to collapse
Yes I did using twrp as I have always done.
If you Nand erased the device by mistake you have killed the device partitions. ..
Fully wipe the device in recovery and boot into download mode. ..Then push the rooted stock rom of your choice via Odin...Then reboot. ..
If the IMEI and EFS folder are gone the device is likely dead...
A repair is possible by the folks at mobiletechvideos.com..
They can restore the partitions and fix the device. ..
See their website for more information and cost. ..g
Sent from my SAMSUNG-SGH-I317 using XDA Premium 4 mobile app
Another member revived his device you might wanna try method from link below.
http://forum.xda-developers.com/showthread.php?t=2467179
jon3sh said:
Another member revived his device you might wanna try method from link below.
http://forum.xda-developers.com/showthread.php?t=2467179
Click to expand...
Click to collapse
nope same issue.
can anyone upload the i317m-16gb.pit file?
I have tryed the i317-16gb.pit without luck so might not be the same as the i316m
thanks
Hello there,
Im with a big big problem right now, I was at Slimbean ROM 4.3 (JB 4.2) and triet to install original Samsung rom via ODIN, when I did I lost my EFS folder, IMEI, etc., but my phone did turn on and i could use it except for calls and messaging.
After several tries to restore my efs folder again (I had an efs folder "efs.tar" that is about 3mb but dont remember which program i used to create it) it simple doesnt turn on and is stuck at Samsung Logo, i tried instralling original ROMS via ODIN, custom roms via CWM and nothing of that works, i can copy files from the efs.tar backup file to the efs folder, but after i reboot it all dissapear and the efs folder is empy.
I tried lots, and I mean lots of ways to recover my efs, or even boot my phone but i get no luck at all.
If anyone can help me please, there is no way to send to Samsung at all.
Thanks in advance,
DCastro555
Wait giving you link
Edit
Read at end of first post of this
http://forum.xda-developers.com/showthread.php?t=2389426
Sent from my GT-N7100 using xda premium
dr.ketan said:
Wait giving you link
Edit
Read at end of first post of this
http://forum.xda-developers.com/showthread.php?t=2389426
Sent from my GT-N7100 using xda premium
Click to expand...
Click to collapse
I cannot turn on the device, i cant acces my phone, only CWM recovery and download mode.
Already tried one of those but when i click on mount /efs i get an error telling Unable to mount /efs!
Maybe if I could get an efs.tar that my Odin could accept i could start the phone, and later copy all my efs files to the efs folder, but i cant find any.
Have you read link i have attached?
That's you have to do in recovery.
Sent from my GT-N7100 using xda premium
dr.ketan said:
Have you read link i have attached?
That's you have to do in recovery.
Sent from my GT-N7100 using xda premium
Click to expand...
Click to collapse
Yes I read all link, the efs.tar i have is only 2mb, and i have no efs.img that is needed, and i dont know why my adb shell is not working, my cmd doesnt recognize the "adb".
Try flashing an earlier rom dont use pit file hooe this works then by using ariza patch restore efs.tar
Sent from my GT-N7100 using xda app-developers app
wada7o said:
Try flashing an earlier rom dont use pit file hooe this works then by using ariza patch restore efs.tar
Sent from my GT-N7100 using xda app-developers app
Click to expand...
Click to collapse
Im not using any pit file, ariza patch i think do not work for me but ill try, and i tried with at least 4 different roms.
[SOLVED]
I dont know how to change the title but if anyone could please put [SOLVED on it.
If there is any user that knows spanish, here is the guide i follower to repair my efs folder and i was able to boot the phone again, http://www.nobutaka.es/web/index.php/component/jcomments/feed/com_content/203.html thanks a lot for all who tried to help.
Sincerely,
DCastro555
Hi
Hi i have problem with my Samsnug Galaxy Note 2 4g(N7105).. after flashing my new rom my note lose imei number and i cant send sms,call anymore ;( my GPS not working too and when i turning on my bluetooth note gets freeze.. And i dont have EFS backup.. My baseband version shows unknow IMEI too... Can i fix this ? ;l Or one option is buy new motherboard?;l I will post some screenshots with Status and "About Device"
Did you create a nandroid backup of your previous firmware?
Otherwise if not, try following two things that hopefully will help.
1. check if the EFS folder is just unmounted, if so- mount it
2. try to flash with Odin exactly the same firmware you've used before
Samsung service can restore your IMEI number w/o problem for few $
tetakpatalked from Nexus 7 flo
tetakpatak said:
Did you create a nandroid backup of your previous firmware?
Otherwise if not, try following two things that hopefully will help.
1. check if the EFS folder is just unmounted, if so- mount it
2. try to flash with Odin exactly the same firmware you've used before
Samsung service can restore your IMEI number w/o problem for few $
tetakpatalked from Nexus 7 flo
Click to expand...
Click to collapse
I Don't have backup but i have backup of efs .
walis1 said:
I Don't have backup but i have backup of efs .
Click to expand...
Click to collapse
That is great news, I would say!
What did you use to create it?
Shell command or custom recovery?
You will probably be able to restore it same way.
tetakpatalked from N7100
walis1 said:
Hi
Hi i have problem with my Samsnug Galaxy Note 2 4g(N7105).. .. And i dont have EFS backup..
Click to expand...
Click to collapse
I didn't expect you have the backup after writing this in first post
tetakpatalked from N7100
tetakpatak said:
That is great news, I would say!
What did you use to create it?
Shell command or custom recovery?
You will probably be able to restore it same way.
tetakpatalked from N7100
Click to expand...
Click to collapse
I use this program efs professional
walis1 said:
I use this program efs professional
Click to expand...
Click to collapse
Then try to restore your EFS with that software, mate. Good luck!!
tetakpatalked from Nexus 7 flo
tetakpatak said:
Then try to restore your EFS with that software, mate. Good luck!!
tetakpatalked from Nexus 7 flo
Click to expand...
Click to collapse
how bro ?
walis1 said:
how bro ?
Click to expand...
Click to collapse
You have written that you have a backup of your EFS and that it was created with "EFS Professional", right?
tetakpatalked from Nexus 7 flo
tetakpatak said:
You have written that you have a backup of your EFS and that it was created with "EFS Professional", right?
[COLOR="Sil
exactly
Click to expand...
Click to collapse
walis1 said:
tetakpatak said:
You have written that you have a backup of your EFS and that it was created with "EFS Professional", right?
[COLOR="Sil
exactly[/QUOTE]
So just restore that backup by using EFS Professional. It should work...
[SIZE=1][I][COLOR="Silver"]tetakpatalked from N7100[/COLOR]
Click to expand...
Click to collapse
Click to expand...
Click to collapse
tetakpatak said:
walis1 said:
So just restore that backup by using EFS Professional. It should work...
tetakpatalked from N7100
Click to expand...
Click to collapse
i Do it this step bro but the program give me file img.efs normally his give me all file of efs for copy the files in folder efs this is my problem
so my question how i can extraire this file img.efs ?
Click to expand...
Click to collapse
walis1 said:
i Do it this step bro but the program give me file img.efs normally his give me all file of efs for copy the files in folder efs this is my problem
so my question how i can extraire this file img.efs ?
Click to expand...
Click to collapse
You don't have to extract it! EFS Professional will install it as .img file
You are very lucky to have that backup. It is very likely that it is also restorable by any custom recovery, or with a terminal command
tetakpatalked from N7100
Lucky guy, always backup your EFS~