I have GS3 i9300 International version.
My EFS partition has been corrupted.
I already have the backup available i took with EFS backup pro but when i now connect through it it doesn't pick it up even though i have put it in the same directory.
I also tried to backup the existing EFS folder (Which doesn't have anything in it) using Root Explorer in Phone but got an error 'Can't locate Mount Point!"
How can i restore my EFS folder again? Any suggestion will be helpful as i have been trying to read all what is available at XDA.
There is no IMEI and baseband available. I had the stocked firmware when this happened with CF root and Siyak Kernel.
I have checked in CWM Recovery mode.
All partitions are mounted except EFS and i am not able to mount it even in recovery.
So after like 24 hrs, i am finally able to restore everything back to normal .
Since the efs partition was not mounting, i used the following commands to do so manually in terminal
Code:
mke2fs /dev/block/mmcblk0p3
mount -w -t ext4 /dev/block/mmcblk0p3 /efs
The link that helped me realize this was
http://forum.xda-developers.com/showthread.php?t=1857811
After running this command i had signals and Wifi begins working but IMEI was turned to generic.
Then i turned to EFS bakup pro and this time successfully restored my efs folder and getting my origional IMEI back.
So all this taught me that flashing and tinkering with your android phone carries a huge risk and we should all be prepared to face such issues if decided to do so.
But really, what's the fun if we don't .
Following are some issues that i faced during this whole process which i am sharing if anybody else gets in the same situations
- The first thing i did was to flash the stock firmware but this lead to an unrooted phone again
- I used CF root to gain root privileges again but supersu was asking for binary updates before giving root permission to other programs.
- So i downloaded SAMSUNG GALAXY S3 TOOLKIT which is an excellent resource for everything related to rooting, flashing and backing up GS3.
- I rooted with busybox so that EFS backup pro can be used.
- Since my GS3 was not having mobile or wifi signal, this toolkit helped a great deal.
- One small thing that i missed was place my EFS back in a folder named "EFSProBackup" which is to be placed in the same directory as the executable of EFS Pro so that it can recognize it in restoration tab.
I hope this will be helpful if anyone gets stuck in this issue.
Oh glad you resolved it
This shows how important an efs backup is
《spilled from dragon jellybean rom》
Thanks for dropping by bg
I had ruined my i9000 same way and used it for a year with generic imei. I had to copy paste the efs folder everytime i rebooted the phone. Now i am on i9100 but i havent yet backed up my efs, can you guide me how to do it?
Download EFS Pro from here EFS Pro.
Connect your phone with pc via USB and make sure you are not using USB Mass Storage mode.
Start EFS Pro. Obviously, you need to be rooted and have busybox installed for this application to run.
Your phone information will be displayed once it's connected.
Create a backup of your EFS Folder either with a .img or .tar extension.
And keep flashing hassle free .
TSKXDA said:
Download EFS Pro from here EFS Pro.
Connect your phone with pc via USB and make sure you are not using USB Mass Storage mode.
Start EFS Pro. Obviously, you need to be rooted and have busybox installed for this application to run.
Your phone information will be displayed once it's connected.
Create a backup of your EFS Folder either with a .img or .tar extension.
And keep flashing hassle free .
Click to expand...
Click to collapse
Thanks alot man. I'll do this asap.
TSKXDA said:
So after like 24 hrs, i am finally able to restore everything back to normal .
Since the efs partition was not mounting, i used the following commands to do so manually in terminal
Code:
mke2fs /dev/block/mmcblk0p3
mount -w -t ext4 /dev/block/mmcblk0p3 /efs
The link that helped me realize this was
http://forum.xda-developers.com/showthread.php?t=1857811
After running this command i had signals and Wifi begins working but IMEI was turned to generic.
Then i turned to EFS bakup pro and this time successfully restored my efs folder and getting my origional IMEI back.
So all this taught me that flashing and tinkering with your android phone carries a huge risk and we should all be prepared to face such issues if decided to do so.
But really, what's the fun if we don't .
Following are some issues that i faced during this whole process which i am sharing if anybody else gets in the same situations
- The first thing i did was to flash the stock firmware but this lead to an unrooted phone again
- I used CF root to gain root privileges again but supersu was asking for binary updates before giving root permission to other programs.
- So i downloaded SAMSUNG GALAXY S3 TOOLKIT which is an excellent resource for everything related to rooting, flashing and backing up GS3.
- I rooted with busybox so that EFS backup pro can be used.
- Since my GS3 was not having mobile or wifi signal, this toolkit helped a great deal.
- One small thing that i missed was place my EFS back in a folder named "EFSProBackup" which is to be placed in the same directory as the executable of EFS Pro so that it can recognize it in restoration tab.
I hope this will be helpful if anyone gets stuck in this issue.
Click to expand...
Click to collapse
Thanks TSKXDA !
With this i able to mount /efs and sucessfull recover my EMEI !
Thanks again !
Hi there.
I'm with the exact same problem and I can't solve it cause shell says "Permission Denied".
Anything I can do?
RE
Press
su
before entering the commands
Unable to mount efs (same problem) but..
my phone just keep boot looping i tried to flash to stock and every time i wipe and clear cache i says unable to mount efs please help thanks
jhemartija said:
my phone just keep boot looping i tried to flash to stock and every time i wipe and clear cache i says unable to mount efs please help thanks
Click to expand...
Click to collapse
As per identical posts .
Restore your backed up EFS folder ..
If you failed to backup your EFS folder then its a paid for service centre repair .
jje
JJEgan said:
As per identical posts .
Restore your backed up EFS folder ..
If you failed to backup your EFS folder then its a paid for service centre repair .
jje
Click to expand...
Click to collapse
i failed to back up, is there any other way? thanks by the way..
jhemartija said:
i failed to back up, is there any other way? thanks by the way..
Click to expand...
Click to collapse
As per ten thousand plus identical posts no .
jje
Any way if converting a .win backup of my EFS to .img? That's how my EFS got backed up. Also what's this I hear of a generic imei?
Sent from my Nexus 7 using XDA Premium HD app
Just read what the generic imei means. 0049
baseband unknown and imei null
JJEgan said:
As per ten thousand plus identical posts no .
jje[/QUOTE
Dear JJEgan,
i had done a back up of efs via EFS PRO and restored it via EFS PRO and restore was successful but the baseband is still unknown and imei still null.plz help this time i had read everything and done as per instructions and i have a backed up efs in my phone and pc as well
thanks in advance
Click to expand...
Click to collapse
bala_gamer said:
Oh glad you resolved it
This shows how important an efs backup is
《spilled from dragon jellybean rom》
Click to expand...
Click to collapse
Dear bala_gamer,
my name is gaurav.i've a gti9300 and l was on stock 4.1.2,i flashed resurrection remix rom and now i've following issues:-
1) BASEBAND VESRION-UNKNOWN
2)IMEI-UNKNOWN
3)MOBILE NETWORK-UNKNOWN
4)NO CALLS,no network although wifi is running smoothly and rest all is fine with the phone.i flashed back stock 4.1.2 and restored EFS via EFS PRO(which i had earlier taken backup on my pc) but the problem still remains although EFS PRO restore was successful
Further info:-
1)i can locate an EFS folder in the normal file manager which is empty
2)in the root explorer i can see an EFS folder with 18 files in it.
plz help thanks in advance,waiting for a quick response from your side
file manager shows empty because it is not operating with permissions to see it. This is not relevant.
use root explorer only
Just flash MG5 stock ROM from India. If it is still broken, send it for repair. Simple as that
TSKXDA said:
Download EFS Pro from here EFS Pro.
Connect your phone with pc via USB and make sure you are not using USB Mass Storage mode.
Start EFS Pro. Obviously, you need to be rooted and have busybox installed for this application to run.
Your phone information will be displayed once it's connected.
Create a backup of your EFS Folder either with a .img or .tar extension.
And keep flashing hassle free .
Click to expand...
Click to collapse
Dear TSKXDA,
I did exactly the same way and took a back up then flashed a custom rom and lost baseband version and imei, i then flashed back to stock rom restored EFS via EFS pro but the issue still remains.You can see my numerous posts in this forum,plz help me out thanks in advance
Related
I got stuck in flight mode yesterday and I can't get out of it.
I have seen i need to restore the efs folder but i don't have a backup.
Is there anyway of getting a backup of an efs folder?
If not how can get my phone back to working order? does it have to be returned to manufacturer?
Would I need to put my phone back to stock as it is now rooted if it needs to go back to samsung?
I have a full backup of my phone on kies if that works?
martyd1901 said:
I got stuck in flight mode yesterday and I can't get out of it.
I have seen i need to restore the efs folder but i don't have a backup.
Is there anyway of getting a backup of an efs folder?
If not how can get my phone back to working order? does it have to be returned to manufacturer?
Would I need to put my phone back to stock as it is now rooted if it needs to go back to samsung?
I have a full backup of my phone on kies if that works?
Click to expand...
Click to collapse
Search is your friend.
I searched this forum and found some intersting threads:
Here a user had the same problem and wrote how he could solve this issue => http://forum.xda-developers.com/showthread.php?t=1261948&highlight=efs+restore
Here is a tool to backup (&restore) efs folder => http://forum.xda-developers.com/showthread.php?t=1308546&highlight=efs+restore
And another user seems to have solved a similar issue => http://forum.xda-developers.com/showthread.php?t=1331701&highlight=efs+restore
Good luck !
yeh i found all those posts and have been reading them carefully.
Only thing is i don't think i can find the nv_data.bin file anywhere.
I have ES File Explorer installed and i looked in the EFS folder but it says it is empty!!!
when i used the EFS Pro it worked through it, i got a .img file at the end of it which is 20MB but i can't seem to view anything in it...
ok now im getting somewhere i found the nv_data.bak so im going to use the articles again and have another go.
I didn't realise you had to use the .tar for the efs backup to view the files
just updated my rom and was messing about with kernels and now my phone hhas gone odd.
it works fine on vodafone(original network) but wont work on any other network.
it always shows signal but with any sim other than voda i get emergency calls only.
so iv had a look about on it and my imei has changed to what i believe is a test imei or something. i have restored my backed up efs and it hasnt changed. its still the same.
i have now put it back to official samsung firmware 2.3.6 then rooted it with cf-root kk5
baseband- i9100xxkl1
kernel- [email protected]#2
build number- gt-i9100-eng 2.3.6 gingerbread xxkl1 test-keys
any ideas?
Read the thousands of EFS IMEI posts .
Starter .
IMEI.
http://forum.xda-developers.com/showthread.php?t=1372169
jje
JJEgan said:
Read the thousands of EFS IMEI posts .
Starter .
IMEI.
http://forum.xda-developers.com/showthread.php?t=1372169
jje
Click to expand...
Click to collapse
i wasnt asking how i fix it, i was asking why its happened?
as in why did restoring my efs still leave me with this odd imei number?
If we knew how it happened it would not be a problem .All that is known is that it is a result of flashing roms .
jje
Flashing the ROM has corrupt your EFS file that contains your phones IMEI number therefore changing it to a false one.Thats why we do backups.Not overly common but common enough.The problem now is to get back your original IMEI by correcting the EFS folder.WHAT type of backup do you have?TAR,ZIP,e.t.c.?
Odia has a good rep at getting phones back up and running.Worth a try.
thats the thing. i understand flashing rom can somehow corrupt the backed up efs but it cant when my back up was on my laptop.
the backup i used was an .img file generated by hellcats ktool app. i also restored it with this app.
i also have the .tar.gz efs backups that are generater automatically but how do i flash this, other than adb. id use adb but it seems to have got a little confussed on my laptop, and dont ever work since i got my sgs2 :/
djmaz said:
thats the thing. i understand flashing rom can somehow corrupt the backed up efs but it cant when my back up was on my laptop.
the backup i used was an .img file generated by hellcats ktool app. i also restored it with this app.
i also have the .tar.gz efs backups that are generater automatically but how do i flash this, other than adb. id use adb but it seems to have got a little confussed on my laptop, and dont ever work since i got my sgs2 :/
Click to expand...
Click to collapse
Heres a link.give this a try.Its an EFS backup tool.Make a backup of your current(wrong)EFS folder in img or tar.It will appear in a folder called EFSProBackup.You need this folder to restore.Open the folder and delete the backup.Put your original backup you made that you have in your PC inside and use the restore option.this program supports backup/restore of img and tar formats so you could try and use it to restore your original ones.
http://forum.xda-developers.com/showthread.php?t=1308546
download the release zip
Id try the img restore first:the option to format current EFS before restore is at your own risk.Please read carefully.
Hi all, I have a galaxy s2 i-9100 which is rooted and running Cyanogenmod 9.
Unfortunately I managed to somehow corrupt my /efs folder and my IMEI number is now the dreaded 004999010640000. (I cannot make any calls or access my mobile network)
In the process of screwing up my /efs folder i also lost the entire contents of my SD card that stored my efs backup.
I do however have a backup of my nv_data.bin file stored on my computer, which I placed back in my /efs folder, deleted the backups etc, rebooted my phone, and it restored my IMEI.
However, as soon as I reboot my phone/switch it off again, next time I boot I'm back at square one and have lost my IMEI number.
Is anyone aware of any way to stop this from happening - or have I got to live with this forever? Any help would be appreciated.
Thanks
as u said u have ur nv_data
try this
http://forum.xda-developers.com/showthread.php?t=1264021&highlight=efs
neerajganga said:
as u said u have ur nv_data
try this
http://forum.xda-developers.com/showthread.php?t=1264021&highlight=efs
Click to expand...
Click to collapse
i have tried to follow this, which does work after i reboot my phone, however once i reboot the next time it goes back to how it was
smartin88 said:
i have tried to follow this, which does work after i reboot my phone, however once i reboot the next time it goes back to how it was
Click to expand...
Click to collapse
30 mins back i lost ma imei and i got the same generic imei as u mentioned in the OP
fortunatly i had the backup so i restored it
and now its fi9
once u get ur orignal imei try doing a backup with ktool (From Playstore)
and as u said u lose it after reboot
then after reboot delete the ef folder and restore efs backup with ktool
and reboot
then check
neerajganga said:
30 mins back i lost ma imei and i got the same generic imei as u mentioned in the OP
fortunatly i had the backup so i restored it
and now its fi9
once u get ur orignal imei try doing a backup with ktool (From Playstore)
and as u said u lose it after reboot
then after reboot delete the ef folder and restore efs backup with ktool
and reboot
then check
Click to expand...
Click to collapse
just tried this and no luck either...rebooted after restoring from backup and generic imei
smartin88 said:
just tried this and no luck either...rebooted after restoring from backup and generic imei
Click to expand...
Click to collapse
is ur phone in warranty ?
Hey Guys
My i9300 was running stock rom and i decided to flash the illusion rom. but i downloaded and flashed the wrong file. so now my imei number is lost and i get no signal.
I have backup of IMEI from the software EFS pro but it does not restore. the software shows all ok but the IMEI on phone is still unknown.
Also there is a file on my sd card with the backup of efs. maybe a rom previously flashed may have taken the backup. I can try and restore that.
Please help me how to do so. its a tar.gz file
Please help me restore my IMEI number. i have no phone signal and dont want to go to service center because my phone is rooted and its voided warranty.
also i had a nandroid backup i restored it and all my data has been restored but not the IMEI
thanks in advance.
Can't help you to get your IMEI back, but to use https://play.google.com/store/apps/details?id=eu.chainfire.triangleaway , use Odin (or mobileOdin) or unroot it you don't need a IMEI.
Tar files are flashed via Odin .
jje
Actually this may be simpler than expected.
tar.gz can be flashed from odin since now it has an /efs field. That alone may be enough. But please do another backup before trying anything. Really, just copying all the files over to somewhere safe is enough.
But Tar.gz is a compressed file (like zip). Have you tried to check what's inside that tar.gz? I'd decompress it to somewhere and compare it to what's inside your /efs partition on your phone. If it seems the same, i'd do a new /efs backup and try replacing the contents of the /efs with the uncompressed backup.
You may need to do this through adb on recovery mode - once, brain went full retard and wiped my /efs partition by not thinking about what i was doing, phone instantly rebooted on the spot to never normally boot again until fixed (had an awesome weekend trying to figure how to fix it , posted somewhere around here how i did it). Doing it from recovery is just to avoid that. Also, all this is assuming some file on your /efs is just corrupted and your backup is in good shape.
If you're still feeling unsure you can (and should) search for related stuff around here in xda. There is PLENTY of info about lost/corrupted /efs around, happens quite often.
Hey guys,
Thank you very much for your replies
It's quite shocking but an official firmware flash via odin solved the problem.
I guess my imei was just corrupted.
Thanks
Hey guys, I had the same problem, but now I know what went wrong, thanks!
hi guys.
this is my first post. first off thanks to all of you out there who have helped me root 3 different devices and install custom roms on 2 of them.
my third device is my gti9300 phone.
i have rooted and installed twrp but before i install a custom rom i made a back up of my efs files using ktool. after backing up the files i ran the check.
under sdcard/efs.img found section everything checks out 100%
under sdcard/efs.tar.gz found i get the message /!\nv_data.bin NOT FOUND in back up!!!
in my files/device storage the files have been created
could any tell me if the back up i have created will work. dont want to flash a rom until i am sure
the phone works fine and the emei number appears as it should in the phones status menu
hope someone can help
thanks
If in doubt then make other backups, philz recovery custom backup, copy and paste efs contents etc.
You can't have too many backups of your efs, store them on your pc and cloud storage.
IMEI
More than one backup of EFS is best .Save one on your PC .
thanks for the advice guys.