[Q] EFs problem only with network locked phone or all?? - Galaxy S II Q&A, Help & Troubleshooting

Hi guys i m new to the forum.. Still dint flash any ROM.. Just wanted to know whther i need to backup(If possible!)efs folder for SGS2... Mine is not netowrk locked its sim changeable!!

Y U NO POST IN CORRECT SECTION?!?!?
Yes of course need to backup
It contains important info such as imei number
If that's corrupt bychance while flashing a rom then won't have signal or imei number
Use kTool from maret
Sent from my GT-I9100 using Tapatalk 2

Lose EFS then lose network locked or unlocked .
Multiple help lost my EFS posts on here so its a must .
jje

Related

[Q] samsung galaxy s2 - IMEI problem

Hi Guys .
I have a problem with my samsung galaxy s2 GT-I9100 JPLPC
The problem is , i can't use the sim card . in when i type *#06# : theres no IMEI
Can sombody help me to fix that plz
Did you had any custom rom so far? or Kernel
Your EFS is corrupted (Did you backuped it?)
my i9100 show imei:004999010640000 (no original imei) and sn:00000000000!
I don't have a backup efs folder! Please help me to recover original imei! Sorry for my bad english!
czsilviu said:
my i9100 show imei:004999010640000 (no original imei) and sn:00000000000!
I don't have a backup efs folder! Please help me to recover original imei! Sorry for my bad english!
Click to expand...
Click to collapse
Don't know if this will work if you don't have your efs folder..but you can try nevertheless
http://forum.xda-developers.com/showthread.php?p=17587351
Sent from my GT-I9100 using xda app-developers app
samsung galaxy SII - GT-I9100 JPLPC kernel
Nope , im serching now for the kernel (GT-I9100 JPLPC)
and didnt found it yet
and i wanted to save the efs file with hc-ktool but it wont , cuz it needs the phone to be rooted
BlackRainX said:
Did you had any custom rom so far? or Kernel
Your EFS is corrupted (Did you backuped it?)
Click to expand...
Click to collapse
nah didnt backup it , cuz i can't , need to root the phone
and i didnt found the kernel yet
streethustle said:
Nope , im serching now for the kernel (GT-I9100 JPLPC)
and didnt found it yet
Click to expand...
Click to collapse
http://www.sammobile.com/firmware/?page=3&model=GT-I9100&pcode=XSG&os=1&type=1#firmware
Sent from my GT-I9100 using xda app-developers app
Not work this method! pls help!
i did downlod one kernel from thoose in the website that u gave me
i rooted the phone with odin , and its says pass with green color
and when i use root checker in my phone to see if it really works , it says - sorry , this device does not have proper root access
streethustle said:
i did downlod one kernel from thoose in the website that u gave me
i rooted the phone with odin , and its says pass with green color
and when i use root checker in my phone to see if it really works , it says - sorry , this device does not have proper root access
Click to expand...
Click to collapse
Install supersu app if it is not installed. By the way what method you used? CFRoot method is already packed with clockworkmod, supersu.
Sent from my GT-I9100 using Tapatalk
Heres some screen shots from my phone
UnwiredDroid said:
Install supersu app if it is not installed. By the way what method you used? CFRoot method is already packed with clockworkmod, supersu.
Sent from my GT-I9100 using Tapatalk
Click to expand...
Click to collapse
streethustle said:
Here's some screen shot's from my phone : about my phone and root checker problem and IMEI ....
and i did download another kernel from http://www.sammobile.com/firmware/?page=3&model=GT-I9100&pcode=MID&os=1&type=1#firmware wich is (I9100JPLPF_I9100OJPLPC_MID) and the winrar does not gave me the .tar it gave me onldy .dLL . can sombody gave the .tar . and because the IMEI does not exist , there's a symbol above
Click to expand...
Click to collapse
I did rooted the phone with the file (CWM and SU-busybox-installer) and when i check root checker
it says congratilations , this device has root access
so now i want to do a backup to the efs file
how do i do that ??
You mentioned it already
theunderling said:
You mentioned it already
Click to expand...
Click to collapse
Yea bruh thxn , i already used this Hc-ktool
but it says : nv_data.bin not found in backup
nv_data.bin not found
streethustle said:
Yea bruh thxn , i already used this Hc-ktool
but it says : nv_data.bin not found in backup
Click to expand...
Click to collapse
heres the pic
UnwiredDroid said:
Install supersu app if it is not installed. By the way what method you used? CFRoot method is already packed with clockworkmod, supersu.
Sent from my GT-I9100 using Tapatalk
Click to expand...
Click to collapse
I got SU and i installed hc-Ktool to backup the efs
but it says efs found in sdcard . nv_data.bin no found
can u someone help me
You're supposed to backup EFS before you bork it. Once it's borked, you're boned. What you're trying to do now is futile.
You have two options; service center or contact Odia by PM (and wait patiently for a reply. If you harass him he'll probably/quite rightly ignore you) & he might be able to recover it for you for a small donation (cheaper than paying Samsung/authorised repairer to fix it).
MistahBungle said:
You're supposed to backup EFS before you bork it. Once it's borked, you're boned. What you're trying to do now is futile.
You have two options; service center or contact Odia by PM (and wait patiently for a reply. If you harass him he'll probably/quite rightly ignore you) & he might be able to recover it for you for a small donation (cheaper than paying Samsung/authorised repairer to fix it).
Click to expand...
Click to collapse
yea i got the efs backup file
but no nv_data.bin
can i download it ?. or can someone that have the same galaxy s2 to give it to me
After backup efs , i did restore it with hc-ktool .
streethustle said:
yea i got the efs backup file
but no nv_data.bin
can i download it ?. or can someone that have the same galaxy s2 to give it to me
After backup efs , i did restore it with hc-ktool .
Click to expand...
Click to collapse
Using sometime else's nv_data.bin file won't help you. That file contains unique information for your specific phone, including your IMEI number.

No signal after flashing wrong ROM

Hello, I think I made a mistake and I need your help.
I am using i9300 S3 from UK, but I live in Lithuania. I wanted to flash a rom, which friend gave me a link: http://forum.xda-developers.com/showthread.php?t=2039995
I made a backup....then installed rom, but rom ididnt installed well, so o restored back. And then I see no signal and says me to put a SIM card, which is in the mobile. What to do? LATER I noticed, that the rom was for AT&T ( But I am using wrong phone right?
In info section is says: Unknow baseband
Please help me, cant call or text.
Pls check whether imei is corrupted or not
Sent from my GT-I9300 with a BIG
jaidev.s said:
Pls check whether imei is corrupted or not
Sent from my GT-I9300 with a BIG
Click to expand...
Click to collapse
Agree with @jaidev.s - check your imei, If it's corrupt = OH DEAR! unless you made an EFS backup?
IMEI: UNKNOW
IMEI SV: UNKNOW
What to do? (((
tukasz said:
IMEI: UNKNOW
IMEI SV: UNKNOW
What to do? (((
Click to expand...
Click to collapse
One restore your backed up EFS folder or try factory reset or flash stock rom ,
Fails then get a price from service centre to repair .
Or get your very stupid friend to pay .
No idea what phone you are using do you know .
jje
JJEgan said:
One restore your backed up EFS folder or try factory reset or flash stock rom ,
Fails then get a price from service centre to repair .
Or get your very stupid friend to pay .
No idea what phone you are using do you know .
jje
Click to expand...
Click to collapse
i am using i9300 s3
tukasz said:
i am using i9300 s3
Click to expand...
Click to collapse
With wrong firmware flashed see my last reply for fix .
jje
JJEgan said:
With wrong firmware flashed see my last reply for fix .
jje
Click to expand...
Click to collapse
I will begin from factory reset
tukasz said:
I will begin from factory reset
Click to expand...
Click to collapse
That won't help.
Your only solution is to restore your EFS folder from the backup that you should have made at the start.
krs360 said:
That won't help.
Your only solution is to restore your EFS folder from the backup that you should have made at the start.
Click to expand...
Click to collapse
Yes, it didn't helped. I have backup, which I made from TWRP. Flashing to stock rom wont help too?
krs360 said:
That won't help.
Your only solution is to restore your EFS folder from the backup that you should have made at the start.
Click to expand...
Click to collapse
No ??? admittedly few in number have resolved EFS problem by factory restore or and flash stock rom .
As the OP has flashed firmware for another phone it could well be more than just EFS i am afraid .
jje
Daaam, so what to do?
JJEgan said:
No ??? admittedly few in number have resolved EFS problem by factory restore or and flash stock rom .
As the OP has flashed firmware for another phone it could well be more than just EFS i am afraid .
jje
Click to expand...
Click to collapse
Really? I've borked my efs loads of times.. factory reset hasn't helped in my case. Apologies!
tukasz said:
Daaam, so what to do?
Click to expand...
Click to collapse
Service Centre .
jje
tukasz said:
Daaam, so what to do?
Click to expand...
Click to collapse
you said you have a backup, just restore it. might work if it has the EFS
Glebun said:
you said you have a backup, just restore it. might work if it has the EFS
Click to expand...
Click to collapse
Maybe I have to delete ESF folder and then make recover?
no, just restore it
Glebun said:
no, just restore it
Click to expand...
Click to collapse
I tried it before. The first thing I did was restore. But same **** = no connection
So there isn't any other way?
If you flashed a wrong firmware you may have messed up your partitions, hence why you have lost efs.....so if nothing works a flash with pit maybe necessary....but I strongly suggest trying all other fixes first.
i will try stock rom now. but maybe i have to format everything? so that new rom maybe fix it?

[Q] i9100 IMEI 0049......

Hi,
Have been searching for a few days to solve this, have a rooted i9100, and for some reason, imei resetted to 0049xxxxx , i have my original imei from sticker on phone, would nayone be kind enough to help me solve this?
more info
EFS PRO Device info...............
Connected Device SN.: 304D19370xxxxxx
Device Manufacturer: SAMSUNG
Device Model: GT-I9100
Product Code: Not Active
Hardware Version: REV__
---------- Firmware Information ----------
PDA Version: I9100BUKJ3
Baseband Version: I9100BUKI1
CSC Version: I9100VDIKI3
---------- Software Information ----------
Kernel Release: 2.6.35.7-I9100XWKJ3-CL647431
Kernel Version: #2 SMP PREEMPT Tue Oct 25 21:29:59 KST 2011
ROM Build: GT-I9100-user 2.3.5 GINGERBREAD BUKJ3 release-keys
Android Version: 2.3.5
BusyBox Version: 1.19.2-cm71
SU Binary Version: 3.0.3
No EFS backup = take it to a Samsung service centre or local mobile repair shop. Nothing anyone here can do to help you.
Edit - Try flashing a bunch of stock roms & pray it's only a temporary thing (don't get your hopes up though).
obi1-2202 said:
Hi,
Have been searching for a few days to solve this, have a rooted i9100, and for some reason, imei resetted to 0049xxxxx , i have my original imei from sticker on phone, would nayone be kind enough to help me solve this?
Click to expand...
Click to collapse
If u have EFS backup, u can try the steps here -> http://forum.xda-developers.com/showpost.php?p=17587351
else
Get an app named 'srs-samsung-unlock' from the samsung site.. log in using their test account and u can use it to get ur imei back...! I went thru the process myself..! u can find the instuctions in the site about how to repair ur imei.. u cant unlock without payment but u can repair ur imei.. U have to b on rooted ICS or rooted GB to use it. Wil exit wit an error if on JB as it has a bug. Good luck...
dudders007 said:
If u have EFS backup, u can try the steps here -> http://forum.xda-developers.com/showpost.php?p=17587351
else
Get an app named 'srs-samsung-unlock' from the samsung site.. log in using their test account and u can use it to get ur imei back...! I went thru the process myself..! u can find the instuctions in the site about how to repair ur imei.. u cant unlock without payment but u can repair ur imei.. U have to b on rooted ICS or rooted GB to use it. Wil exit wit an error if on JB as it has a bug. Good luck...
Click to expand...
Click to collapse
Hi
Thx for info, can u tell me which is the correct SRS Samsung Unlock ? Cannot find it on Samsung site, is it an official program from Samsung?
dudders007 said:
If u have EFS backup, u can try the steps here -> http://forum.xda-developers.com/showpost.php?p=17587351
else
Get an app named 'srs-samsung-unlock' from the samsung site.. log in using their test account and u can use it to get ur imei back...! I went thru the process myself..! u can find the instuctions in the site about how to repair ur imei.. u cant unlock without payment but u can repair ur imei.. U have to b on rooted ICS or rooted GB to use it. Wil exit wit an error if on JB as it has a bug. Good luck...
Click to expand...
Click to collapse
Tried SRS unlock method and imei repair but needs 30euro before it attempts it, bit of a rip off, wont work with test account, or am I missing something.
This only option??
obi1-2202 said:
Tried SRS unlock method and imei repair but needs 30euro before it attempts it, bit of a rip off, wont work with test account, or am I missing something.
This only option??
Click to expand...
Click to collapse
i tried with the
username: test
password: srscom
and it worked like a charm for me.. managed to repair ma friends IMEI that way.. i got this test account in one of the samsung sites itself.. dunno where exactly unfortunately.. Search n u wil find many on google that help.. cant unlock but allows repair.. Be in ICS or below though.. or it wil ruin ur EFS more..
i searched for a week n discovered this account.
Try in HERE for another solution that may help.
Ther were certain users who can help u for a fee though..
One way or another you're paying for a fix.
MistahBungle said:
One way or another you're paying for a fix.
Click to expand...
Click to collapse
Ya but only if u r unlucky with the login IDs... I fixed it without payin a penny.. Like i said, used those userID n password n it worked.. Besides, u get a lot o IDs if u search that have the required amount of points for the fixing.. :good:
The phone i restored was a product not from my country and so the service center also refused its fixing.. had to do it myself n with that useriD, voila..!
obi1-2202 said:
Hi,
Have been searching for a few days to solve this, have a rooted i9100, and for some reason, imei resetted to 0049xxxxx , i have my original imei from sticker on phone, would nayone be kind enough to help me solve this?
Click to expand...
Click to collapse
Did you manage to get it sorted ??? I had a blank IMEI and baseband unknown. I used SiiRepair app from google play and it worked first time !! I then unlocked it with GalaxyS Unlock app and again that worked a treat !!! its by helioz
Back up youe efs though if you already havnt.
I didnt and when i did a software update it went back to imei blank ???? Im still having a nightmare with it now nothing seems to work !!!!
hope this helps

[Q] How to downgrade EFS v2 to EFS v1 for unlocking SIM network ?

Hi,
I'm currently running omnirom 4.4.2 nightlies on my I9300.
I want to unlock SIM network without a code, because any code providing by MNO won't work.
Now, from what I understood, the only way to unlock SIM network by myself is to flashback from 4.4.2 to 4.1.1. Now as you may know, 4.1.1 modem expects an EFS v1, and starting from build xxemg4, modems expect EFS v2...
So I can always flash an xxemg4 modem once I flashed back to 4.1.1, but it won't help because this SIM unlocking method only works on an EFS v1...
So, for now my question is: How can I downgrade EFS v2 to EFS v1 if it's even possible?
I apologize if this question has already been asked an hundred times, I'm taking any other alternative solution to unlock SIM network if you have one!
Thanks in advance!
Only if you have a backup of your efs when it was v1, if already on v2 and no backup then there is no way to downgrade.
Sent from my GT-I9300 using Tapatalk
boomboomer said:
Only if you have a backup of your efs when it was v1, if already on v2 and no backup then there is no way to downgrade.
Sent from my GT-I9300 using Tapatalk
Click to expand...
Click to collapse
Unfortunatelly, I don't have any backup of my EFS v1... So I guess there is no other method to unlock the device than getting the right code?
I've heard it could be done through a wire using some software from a PC?
EFS V2 can read efs v1 .but if you want to unlock your phone it's another process
Isuru cs said:
EFS V2 can read efs v1 .but if you want to unlock your phone it's another process
Click to expand...
Click to collapse
Can you provide me this process?
Thanks in advance!
Tell clearly what you want to do
?★Sent from My GT-9300★?
Isuru cs said:
Tell clearly what you want to do
?★Sent from My GT-9300★?
Click to expand...
Click to collapse
I want to unlock SIM network, I'm unable to use any SIM from an other operator at the moment...
KishlorN said:
I want to unlock SIM network, I'm unable to use any SIM from an other operator at the moment...
Click to expand...
Click to collapse
What is your network carrier?
?★Sent from My GT-9300★?
Isuru cs said:
What is your network carrier?
?★Sent from My GT-9300★?
Click to expand...
Click to collapse
Orange France
Read this.
http://forum.xda-developers.com/galaxy-s3/general/ref-imei-efs-stuff-i9300-including-t2393289
I'm not sure to understand... You mean that if I set the right permissions on EFS files before flashing back from 4.4.2 to let's say stock 4.1.1 (which includes a modem pre xxemg4), it somehow downgrades EFS v2 to v1?
If so, that would be amazing !
Sent from my GT-I9300 using xda app-developers app
@up
Hi,
did You unlock Your SGS3? I am trying but with no success. I have efs v2.

new locked s3 want to unlock having problems..

So it was originally on 4.3 and i was told to downgrade to 4.1.1 to unlock it so i did..
I ran the GalaxSim Unlock app to unlock it but its saying invalid IMEI now :/
I dont have a backup of anything what can I do to unlock it..
Thanks.
You should to install 4.4 version to unlock it. It is the latest version.
How would i do that?
Sent from my GT-N8013 using XDA Premium HD app
4.4 won't help anyone, you can't downgrade to 4.1 without an efs backup to restore. Pay for a code.
boomboomer said:
4.4 won't help anyone, you can't downgrade to 4.1 without an efs backup to restore. Pay for a code.
Click to expand...
Click to collapse
Well I know the imei number its supposed to be (on the box)
anyway I can restore that?
Usually when the imei is invalid it means you have damaged the /efs folder, the only way to repair this is by restoring a backup.
However first try flashing a stock rom again, just to be sure, if it's still invalid then the problem is definitly the /efs folder. Because the /efs is specific to each individual phone there isn't much we can do. Moral of the story is to make sure you make a /efs backup. The app you used should have a tool to backup the /efs folder, and this should have been done before trying to write to it.
I did copy the efs folder to my sd card before doing anytjing with it...
But copying it back just made it have yellow text on the homescreen...
I tried reflashing back to 4.3 but no solution...
EDIT:
After copying it again it made the text go away but my IMEI is still 0049...
Any help?
edit2:
FIXED IT, Got the IMEI back
Is there any guide now on how to unlock the phone? Currently on android 4.1.1
Sent from my GT-N8013 using XDA Premium HD app
iRhyiku said:
I did copy the efs folder to my sd card before doing anytjing with it...
But copying it back just made it have yellow text on the homescreen...
I tried reflashing back to 4.3 but no solution...
EDIT:
After copying it again it made the text go away but my IMEI is still 0049...
Any help?
edit2:
FIXED IT, Got the IMEI back
Is there any guide now on how to unlock the phone? Currently on android 4.1.1
Sent from my GT-N8013 using XDA Premium HD app
Click to expand...
Click to collapse
So you wanna root your phone, right
xda_Noob. said:
So you wanna root your phone, right
Click to expand...
Click to collapse
No, the phone is rooted and has a custom recovery.
I want to SIM-Unlock it so I can use any networks sim on it.
The easiest and safest way is to contact the carrier whom the phone is locked to and ask for an unlock code, they should give you it, but might charge (I'm not sure how much.)
Try to do the nv_data.bin method.
You won't find the md5 value in the log (Samsung patched that a while ago), instead, run this on a Linux machine (or in the Android terminal):
(cat nv_data.bin; echo -n Samsung_Android_RIL) | md5sum
Sent from my GT-I9305 using XDA Free mobile app
iRhyiku said:
No, the phone is rooted and has a custom recovery.
I want to SIM-Unlock it so I can use any networks sim on it.
Click to expand...
Click to collapse
Samsung updated the efs in one of the 4.3 roms and above. Your 4.1 rom doesn't recognise it as the 4.1 rom cannot read a V2 efs and since you started out with a v2 efs you cannot do anything with Rom versions below 4.3.
Restore your original rom or install a custom 4.4 rom regain your imei and either pay for a code or contact your carrier. This app is useless in your case..
http://forum.xda-developers.com/galaxy-s3/general/ref-imei-efs-stuff-i9300-including-t2393289
Darke5tShad0w said:
Samsung updated the efs in one of the 4.3 roms and above. Your 4.1 rom doesn't recognise it as the 4.1 rom cannot read a V2 efs and since you started out with a v2 efs you cannot do anything with Rom versions below 4.3.
Restore your original rom or install a custom 4.4 rom regain your imei and either pay for a code or contact your carrier. This app is useless in your case..
http://forum.xda-developers.com/galaxy-s3/general/ref-imei-efs-stuff-i9300-including-t2393289
Click to expand...
Click to collapse
Yeah I eventually gave up, updated to CM11 and paid for a code and its all working fine now, thanks everyone for the help.
iRhyiku said:
Yeah I eventually gave up, updated to CM11 and paid for a code and its all working fine now, thanks everyone for the help.
Click to expand...
Click to collapse
where did u got the code ? and how much did u paid ?
regards
[email protected] said:
where did u got the code ? and how much did u paid ?
regards
Click to expand...
Click to collapse
I actually went into my local town, went into one of those "phone unlocking/repair" shops and paid £15 to get it done. Was done in 30minutes and works beautifully.
Using GiffGaff on a Orange Samsung Galaxy S3 running Cm11.

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