EFS folder/IMEI problem

[MUBASHIR888]

Hi everyone,this is my first post here on xda but i have been observing and following XDA forum for quite a while now,
Now recently I tried to install Origional CM10.2,
Steps i followed were
I had 2.3.4 ( i did installed CM9 almost an year back but then odin back to stock for reasons i dont remember now)
First i Flashed Speedmod kernel via odin 1.7, and then flashed glitch kernel zip using the recovery that came the speedmod kernel,
Wiped devlik cache and went on to install CM10.2,
Everything went fine till i noticed that i was not getting any reception and after googling a bit,identified the problem as efs folder corruption!

I immedietly flashed back to 2.3.4 using oddin and that solved the problem, and my fone was getting the signals on stock 2.3.4,

Following instructions from google, I used EFS recovery softwere to backup my EFS folder,
and then followed the same sequence to flash again to 10.2CM, but here come the tricky part, EFS pro didnt seem to work on CM10.2, i have everything installed perfectly, debugging mode is on, still cant get to restore the efs folder!
I even tried manually copying the backed up EFS folder and putting it in system folder using root explorer etc,but that didnt seem to work, I changed the permission to Read/write aswell, still it says operation failed!
EFS pro was my best hope but it just doesnt work, tried a newer verison of it(newer than the one that i used to backup the efc on GB),that opened but didnt have my device in supported list,and neither was showing any backup!!
This is what i have been doing for past two days

Now I am back to 2.3.4,and IMEI is working fine now.
and additionally just to check whether this happens only on cm10.2 or other versions as well, I flashed Cm10.1 aswell as cm9, same problem there aswell
(As far as i remember ,last year when i flashed CM9,it worked fine but was laggy so i flashed back,only thing i did differently was that i didnt install any kernel)


So any ideas how i should proceed now?
I would thankful if someone can help me ,
and sorry for the long story,i wanted to give as much precise info abt problem as possible!

 

[BWolf56]

Hi everyone,this is my first post here on xda but i have been observing and following XDA forum for quite a while now,
Now recently I tried to install Origional CM10.2,
Steps i followed were
I had 2.3.4 ( i did installed CM9 almost an year back but then odin back to stock for reasons i dont remember now)
First i Flashed Speedmod kernel via odin 1.7, and then flashed glitch kernel zip using the recovery that came the speedmod kernel,
Wiped devlik cache and went on to install CM10.2,
Everything went fine till i noticed that i was not getting any reception and after googling a bit,identified the problem as efs folder corruption!

I immedietly flashed back to 2.3.4 using oddin and that solved the problem, and my fone was getting the signals on stock 2.3.4,

Following instructions from google, I used EFS recovery softwere to backup my EFS folder,
and then followed the same sequence to flash again to 10.2CM, but here come the tricky part, EFS pro didnt seem to work on CM10.2, i have everything installed perfectly, debugging mode is on, still cant get to restore the efs folder!
I even tried manually copying the backed up EFS folder and putting it in system folder using root explorer etc,but that didnt seem to work, I changed the permission to Read/write aswell, still it says operation failed!
EFS pro was my best hope but it just doesnt work, tried a newer verison of it(newer than the one that i used to backup the efc on GB),that opened but didnt have my device in supported list,and neither was showing any backup!!
This is what i have been doing for past two days

Now I am back to 2.3.4,and IMEI is working fine now.
and additionally just to check whether this happens only on cm10.2 or other versions as well, I flashed Cm10.1 aswell as cm9, same problem there aswell
(As far as i remember ,last year when i flashed CM9,it worked fine but was laggy so i flashed back,only thing i did differently was that i didnt install any kernel)


So any ideas how i should proceed now?
I would thankful if someone can help me ,
and sorry for the long story,i wanted to give as much precise info abt problem as possible!

Were you rooted when you tried to manually restore your efs folder? It should let you change it if you have the right permissions.

I would try to make a manual backup of your efs folder while you're on stock GB and try it again on the ROM you wanna use if you lose your IMEI again. Perhaps try another ROM as well, see if you get the same issue.

 

[mooneyb]

I have had problems with losing my imei after flashing to cm10 variants as well. In the steps that I took in this video I didn't lose it and I haven't had anybody else report that they have in the comments.

https://www.youtube.com/watch?v=_hmck9ES6jM

 

[MUBASHIR888]

Were you rooted when you tried to manually restore your efs folder? It should let you change it if you have the right permissions.

I would try to make a manual backup of your efs folder while you're on stock GB and try it again on the ROM you wanna use if you lose your IMEI again. Perhaps try another ROM as well, see if you get the same issue.

Arent Cyanogen Mods are already rooted?
I used the File explorer that was included in CM10'.2 and in settings i changed its permissions to ROOT ACCES.
Still i cant copy anything to EFS folder.
To be on the safe side,i tried Rooting Cm10..2 with Vroot,one click softwere and it showed that my phone had root Permissions!
Still I CANT WRITE ANYTHING WITHIN SYSTEM FOLDER,root explorer says that I dont have Root permissions, even after i rooted with Vroot!
I am confused

 

[BWolf56]

Arent Cyanogen Mods are already rooted?
I used the File explorer that was included in CM10'.2 and in settings i changed its permissions to ROOT ACCES.
Still i cant copy anything to EFS folder.
To be on the safe side,i tried Rooting Cm10..2 with Vroot,one click softwere and it showed that my phone had root Permissions!
Still I CANT WRITE ANYTHING WITHIN SYSTEM FOLDER,root explorer says that I dont have Root permissions, even after i rooted with Vroot!
I am confused

I would suggest trying with another file explorer. There are many on the Play Store (I personally like Root Explorer but there are free options).