efs folder keeps overwriting with generic IMEI - Galaxy S II Q&A, Help & Troubleshooting

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 ?

Related

Has anybody tried this efs back-up method on i900?

Has anybody tried this i9000 efs back-up method on the i9100.In theory it should work.It seems super simple so would be good to use.Im mainly asking if anyones done the back-up as they state in the video at the bottom that to restore you only need to copy/paste/overwrite the back-up folder with a root explorer so am lookin so an easy safe and simple way to back-up to phone and PC.If it works then it would also help alot of other people out.
http://forum.xda-developers.com/showthread.php?t=881162
here is the link given in the video for the rar file from the MobileTechVideo site
http://www.mediafire.com/?w5oxsdo6r53ou1s
As i said just the back-up and not the restore or generic imei cos its not the same model so maybe only the video needs to be watched.So basically a 14min video that you only need to watch about 6min.Not much time to eat pop-corn.Sorry
EDIT:Crap,Ive just realised Ive put this in Q&A and not General."MODERATOR PLEASE!!"
and secondly Ive spelt i9100 wrong!!
just incase anyone wants to know why i havnt tried it myself its cos my phones at the service centre
I just use HellcatDroid's HC-kTool to backup my EFS folder.
It can be found here http://forum.xda-developers.com/showthread.php?t=1182922, just press backup and you have a backedup efs folder .
Bloomfield87 said:
I just use HellcatDroid's HC-kTool to backup my EFS folder.
It can be found here http://forum.xda-developers.com/showthread.php?t=1182922, just press backup and you have a backedup efs folder .
Click to expand...
Click to collapse
My phone is in the service centre because of this app.Im not sure if it was me or what went wrong.I pressed the back-up button and made a back-up and after a flash started to have problems with conectivity so i hit the restore button.It opened a warning saying that it was a dangerous process and asked if i wanted to continue,I hit yes and everything went to the ****ter.That little round no connection symbol appeared in the top right hand corner and sim was not recognised.Typed code to check IMEI and it had disapeared.Went into efs file in the root of my phone and it was wiped completely clean.Not one single thing inside.Same with the back-up on internal-sd.Seems that the restore had formated my efs folders root and back-up.No idea what happened so know im a mission to find other options although i do like the KTool cos its so simple to use.Maybe it was just me and not the app.Not sure.
Bloomfield87 said:
I just use HellcatDroid's HC-kTool to backup my EFS folder.
It can be found here http://forum.xda-developers.com/showthread.php?t=1182922, just press backup and you have a backedup efs folder .
Click to expand...
Click to collapse
My phone is in the service centre because of this app.Im not sure if it was me or what went wrong.I pressed the back-up button and made a back-up and after a flash started to have problems with conectivity so i hit the restore button.It opened a warning saying that it was a dangerous process and asked if i wanted to continue,I hit yes and everything went to the ****ter.That little round no connection symbol appeared in the top right hand corner and sim was not recognised.Typed code to check IMEI and it had disapeared.Went into efs file in the root of my phone and it was wiped completely clean.Not one single thing inside.Same with the back-up on internal-sd.Seems that the restore had formated my efs folders root and back-up.No idea what happened so know im a mission to find other options although i do like the KTool cos its so simple to use.Maybe it was just me and not the app.Not sure.
EDIT:Maybe it would have worked if i was on his kernel but it says that you dont have to be so i dought that was the problem.

no IMEI/no baseband

I lost IMEI and baseband, i backup the EFS folder, how can i install the pack of restore from CWM ?
Many thanks !
pepe2909 said:
I lost IMEI and baseband, if i backup the EFS folder, how can i install the pack of restore from CWM ?
Many thanks !
Click to expand...
Click to collapse
if ?
u either did or didnt there is no if
if u backed it up before then just use the search function and ull know how to restore it
if u didnt back it up
then contact odia he will fix it for you
http://forum.xda-developers.com/member.php?u=1465627
as u can see odia fixed his issue http://forum.xda-developers.com/showthread.php?t=1103357
pepe2909 said:
I lost IMEI and baseband, i backup the EFS folder, how can i install the pack of restore from CWM ?
Many thanks !
Click to expand...
Click to collapse
If you made a complete system / nandroid backup with CWM, then you can restore it in CWM recovery mode => Backup & Restore => Restore.
Good luck !
It_ler said:
If you made a complete system / nandroid backup with CWM, then you can restore it in CWM recovery mode => Backup & Restore => Restore.
Good luck !
Click to expand...
Click to collapse
I backup the entire system of CWM, but after restore it without IMEI...
I want to restore only the EFS of CWM
I want to put good EFS files over the damaged files EFS, say we have not permission
my problem was solved thanks to Gowind
"Is the problem solved. If not you can use blade buddy from market. Open it, mount system RW. Then go to root explorer, extract your efs backup. Copy the file and paste it in \
Then reboot phone."
thanks to all !

[Q] Backup of EFS Folder - No IMEI/ Baseband

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

[Q] full recovery and flash problems

Ok ill try explain what I did 1st.
I made full back up with ROM Manager saved on my PC and backed up EFS partition with EFS PRO
Then I flashed my ROM with ROMOW Extreme_3 after that IMEI = ok and signal showing = ok but "not registered on network"
Ok I thought big deal I’ll gonna recover from my backup and all gonna be ok but.... after backup exactly same "not registered on network" - WTF!?!?!?!
I gave a phone to my m8 he connected it to BOX and said NVM is corrupted and even if I can see my IMEI on my phone it’s actually not there on BOX it was showing “0000000”. – got fixed.
And then I repeated same mistakes again just with different ROM....and he fixed again... etc.... :laugh:
So any suggestion how to back up I mean proper back up?
Backup EFS folder .
Backup system and data vai Nandroid .
Backup apps with Titanium Backup .
Thats the usual method .
jje
JJEgan said:
Backup system and data vai Nandroid .
Click to expand...
Click to collapse
Rom manager does nandroid backup and restore isn't it?
And if u red then u can see i made EFS backup but that still doesn't help.
[
And if u red then u can see i made EFS backup but that still doesn't help.[/QUOTE]
If you read your own question that i answered .
Your question
So any suggestion how to back up I mean proper back up
jje
so whats the point of urs if u just repeat what i said u didnt suggest aanyting different

[Q] IMEI 004999010640000/01 after flash - nothing works

I´ve rooted my s3 and now is my IMEI 004999010640000/01 and after that it is not possible to make calls,. I´ve read a lot of pages about restoring IMEI by EFS back up I have, but nothing still work. Can somebody help me??
EFS back up was created after rooting so maybe that the reason, why I cannot restore (restoring works but with false data of IMEI, is it write??) So have can I put my IMEI back without back up??
Thank you
Factory reset flash stock rom that fails it is a service centre repair.
The efs backup is in tar or tar.gz format ? If yes just unpack it using 7zip and copy paste efs folder contents from backup to phone efs folder ....
sent from the state where marijuana is NOT illegal !
You only rooted? Is that the FULL story? How did you root?

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