Database Develop

Lost IMEI

Hi,
My IMEI is 004999010640000.
I understood from reading on this forum that it is not a valid one.
However, my phone works.
I did back efs folder but I might had backed it up after too ma y past flashes.
1. How can I know if IMEI is fine?
2. Can IMEI or eds folder be restored from carrier/other if my backup is obsolete?
3. Can I find it in an old nandroid backup? How?
10x
Trumpy
Sent from my GT-I9000 using xda premium

If it starts 004999xxx then its been corrupted but you can always flash a stock samsung rom to get it back. Check this thread

Menvaihelv... said:
If it starts 004999xxx then its been corrupted but you can always flash a stock samsung rom to get it back. Check this thread
Click to expand...
Click to collapse
10x,
If it is corrupted, how can flashing a stock rom restore it?
I am on ICS. Should i simply flash a stock rom using cwm recovery?
I'd hate flashing back and forth, is there any alternative solution?
If my phone works, why do I need the imei for?
Regards,
Trumpy
Sent from my GT-I9000 using xda premium

y.trumper said:
10x,
If it is corrupted, how can flashing a stock rom restore it?
I am on ICS. Should i simply flash a stock rom using cwm recovery?
I'd hate flashing back and forth, is there any alternative solution?
If my phone works, why do I need the imei for?
Regards,
Trumpy
Sent from my GT-I9000 using xda premium
Click to expand...
Click to collapse
i am also having the same trouble. and took the plunge to flash via odin. now im having problems with that. if there was only an easy way to fix it. and easy wasys to back up and restore in future

No IMEI,No network EFS folder empty

i tried re-stocking my SGT P1000 from aokp build 40# via odin n it show fail bt somehow manage to boot.bt now my tab is not showing network n IMEI .
i tried recovering from EFS folder but thats empty too.
i dont have EFS backup only nandroid backup of stock rom.
Plz help

Efs folder is visible.
Sent from my GT-P1000 using xda app-developers app

how do you restock? Overcome's GB-stock-safe?
What ROM are you booting into now?

I restock via Odin.use gingerbread stock,pit file and then dbdata.Odin show fail but boot on gingerbread when I again tried flashing.it happen to me before too as once by mistake i restore stock nandroid over cm9.
so currently on gingerbread.right now downloading over come gb stock safe v5 ll try flashing it.
Sent from my GT-P1000 using xda app-developers app

baseband is unknown.i flash aokp again that may be that correct it bt didnt works.can i install gb stock safe directly over aokp 40# or again hv to restock.
Sent from my GT-P1000 using xda app-developers app

you have to restock when coming from MTD rom like AOKP or CM9.
even for nadroid restore you have to restock then restore.
when restock, it is best using GB-stock-safe.
use its pit file and it also has modem files.
Edit, are you referring to GB-stock-safe when you said "overcome rom"?
Overcome ROM is a different thing.

yes gb stock safe i was about to correct that.i install bml my mistake due to rom naming confusion
now ll gb stock safe help in getting baseband?
Sent from my GT-P1000 using xda app-developers app

honestly I don't know about efs.
I read of people losing /efs due to bad kernel, but got it back with good flash.
I don't get it because I thought /efs once is deleted it is gone unless there is backup.
Anyway, you have checked your sdcard, no backup?
and GB-stock-safe can be flashed coming from aokp.
that is how we restock.

i didnt create any backup bt there is auto back up one with name efs and another with efs-294 .
and where is modem file for gb stock safe.it is not in zip file i download.only rom,pit file and overcome kernel.
Sent from my GT-P1000 using xda app-developers app

Gb safe stock works.got my imei back.i think problem was related to modem file.thanks a ton man.
Sent from my GT-P1000 using xda app-developers app

priyana said:
honestly I don't know about efs.
I read of people losing /efs due to bad kernel, but got it back with good flash.
I don't get it because I thought /efs once is deleted it is gone unless there is backup.
Anyway, you have checked your sdcard, no backup?
and GB-stock-safe can be flashed coming from aokp.
that is how we restock.
Click to expand...
Click to collapse
even if you delete efs folder, android will generate a new one with a different imei, its a real problem because he will find a hard time with his apps (paid ones) i tried the new efs once and i can't use my Samsung paid apps anymore, when restored my old efs, it works again.
If I helped you, please press the thanks button

efs.img
Hello.i tryed to backup efs partition on tab p1000,and got the 2gb efs.img file.As i know now,its too big.Is it possible that image contains /efs folder in it?And if yes,how can i restore?
Restocking didn`t bring imei back.

What did you use to restock?
i haven't heard of a 2gb /efs backup before. sounds like you should restock using a proven method like Overcome. Maybe you should try this out:
http://forum.xda-developers.com/showthread.php?t=1881981
like many, i also lost imei once, and this rom brought it back.

filteringfields said:
What did you use to restock?
i haven't heard of a 2gb /efs backup before. sounds like you should restock using a proven method like Overcome. Maybe you should try this out:
http://forum.xda-developers.com/showthread.php?t=1881981
like many, i also lost imei once, and this rom brought it back.
Click to expand...
Click to collapse
I`m not sure,but i read this thread too.Will try again anyway,thanks.

Gb safe stock works.got my imei back.i think problem was related to modem file.thanks a ton man.
Sent from my GT-P1000 using xda app-developers app
Click to expand...
Click to collapse
Could you show me step by step to get IMEI back, i am facing the same problem. Thanks a lot
Sent from my SGH-I777 using xda premium

It is exactly two post above you. Or look at my signature.
Sent from my GT-I9300 using xda app-developers app

I got IMEI back. My experience: PC on offline mode(no wifi, no LAN), end all Kies process then downloading mode, turn on Odin blah...blah...
Sent from my SGH-I777 using xda premium

Invalid IMEI prompt on bootup

Guys,
I just updated with the CM10 nightly and I am getting a prompt on bootup that my IMEI is not valid. The IMEI is not blank, and isnt something like 0123456789. Is this a big issue? My calling and texting are working fine, as is my mobile data.
Thanks

The same happens to me. I did an efs backup with root manager but is there any risk? Could someone explain please?

I backed up with cwm before loading cm10 0823. And did an imei restore from Nitrality and it says successful. However I still get an invalid imei on bootup
Sent from my GT-I9000 using xda premium

Updated to cm10 0824. Same issue. Should I do a full cwm restore?
Sent from my GT-I9000 using xda premium

Hey guys common issue if you want it back follow my guide http://forum.xda-developers.com/showthread.php?t=1845104 you might want to titanium backup your apps first then backup your sd
Sent from my GT-I9000 using xda premium

Restored cwm backup from before the issue started. No long have invalid imei. Update to latest cm 10 and invalid imei prompt on startup. However the imei screen under About has an imei number in it still.
Sent from my GT-I9000 using xda premium

Correct imei though as in the same as the one under the battery?
Sent from my GT-I9000 using xda premium

Nope. Its a different one.
Sent from my GT-I9000 using xda premium

webchaos said:
Nope. Its a different one.
Sent from my GT-I9000 using xda premium
Click to expand...
Click to collapse
OK so its invalid try the link I previously posted if it works or not get back to me
Sent from my GT-I9000 using xda premium

After going back to stock GB, darky resurrection ROM, cm9 and finally cm10. IMEI is back and looking OK. Thanks.
Sent from my GT-I9000 using xda premium

That's good
Sent from my GT-I9000 using xda premium

Felt a bit of nostalgia going back through the last 2 years of ROMs lol. Thanks again.
Sent from my GT-I9000 using xda premium

webchaos said:
Felt a bit of nostalgia going back through the last 2 years of ROMs lol. Thanks again.
Sent from my GT-I9000 using xda premium
Click to expand...
Click to collapse
Well, in my case, my father's phone lost all efs backups, and nv_data.bin is corrupted (regenerated new one with default generic IMEI).
So, there is nothing to restore from. Reflashing to stock 2.3.6 JW5 firmware didn't help. So you think that I will have to reflash to 2.2.1? How so? I don't understand how older firmware may help restoring correct IMEI...and I don't own JTAG, z3w or SPT boxes...
And for morrons - no, there is no .nv_data.bin, no nv_data.bin.bak, or similiar...only new nv_data.bin(md5) with default, generic IMEI.
Is there any way to restore it? if somebody start to complain that I am thief, I can prove by photos of original phone box, and buying papers I have (my father gave them to me for this purpose).
And no, I don't have to steal anything, I own SGS3, SGS2, SGS, SGT10.1....so stealing another SGS is not an option for me
I just want to restore that phone to it's stock state (and then reflash again with CM10).
Anyone?

Virnik0 said:
I just want to restore that phone to it's stock state (and then reflash again with CM10). Anyone?
Click to expand...
Click to collapse
you can get a rescue kit from My Android Collections and or a solution from My Android Solutions
just flash a JVU and a PIT , should get you back your IMEI or look at My android solutions for details

xsenman said:
you can get a rescue kit from My Android Collections and or a solution from My Android Solutions
just flash a JVU and a PIT , should get you back your IMEI or look at My android solutions for details
Click to expand...
Click to collapse
Why are you so confident, that JVU will regenerate /efs?
as said before, my father was so genius, that he has wiped /efs partition out. I have restored some data, but without proper IMEI, so now I have generic one. I still do have old JVU package somewhere on my NAS, but I do not understand, how old firmware may help, because I am without any /efs backup anywhere... is that firmware customized so it checks and regenerates /efs if its damaged? If so, why is this feature missing from latest full JW5 firmare? Please understand that I know what I am doing, but right now, I have empty hands...without JTAG, z3w or similiar low-level gadget, it is really hard to restore proper /efs on my own...
But thank you for links, I will take a look on them...

More Clues On Fixing IMEI Issue (solved for me)
In my case I upgraded directly from Froyo to CM10.1 and got then same dreaded 'default' invalid/corrupt IMEI=004999010640000
On inspection of the /efs files present it was clear they had been created by the system in response to not being present.
Following advice in this thread and elsewhere I downgraded back to Froyo (XXJPU) and like magic my correct IMEI re-appeared but as soon as I upgraded up to CM9 it changed back to the invalid default of 004999010640000 again.
To cut a long story short I downgraded back to Froyo (XXJPU) again, flashed a recent CWM recovery and booted into the recovery. I then used ADB to get a (root) shell prompt and discovered that the correct /efs data was being mounted from the device /dev/stl3 and at this point I was able to tar up the contents of /efs and safely make a backup. I then upgraded to CM10.1, restored the correct /efs backup and rebooted.
Happy with correct IMEI now
I am not sure what is going on but I am speculating that the big jump from Froyo to CM10.1 bypasses come critical intermediate ROM build where the correct IMEI data is copied from /dev/stl3. CM10.1 assumes this step has taken place and makes no attempt to get the original IMEI data.
... Robert

robertrath said:
In my case I upgraded directly from Froyo to CM10.1 and got then same dreaded 'default' invalid/corrupt IMEI=004999010640000
On inspection of the /efs files present it was clear they had been created by the system in response to not being present.
Following advice in this thread and elsewhere I downgraded back to Froyo (XXJPU) and like magic my correct IMEI re-appeared but as soon as I upgraded up to CM9 it changed back to the invalid default of 004999010640000 again.
To cut a long story short I downgraded back to Froyo (XXJPU) again, flashed a recent CWM recovery and booted into the recovery. I then used ADB to get a (root) shell prompt and discovered that the correct /efs data was being mounted from the device /dev/stl3 and at this point I was able to tar up the contents of /efs and safely make a backup. I then upgraded to CM10.1, restored the correct /efs backup and rebooted.
Happy with correct IMEI now
I am not sure what is going on but I am speculating that the big jump from Froyo to CM10.1 bypasses come critical intermediate ROM build where the correct IMEI data is copied from /dev/stl3. CM10.1 assumes this step has taken place and makes no attempt to get the original IMEI data.
... Robert
Click to expand...
Click to collapse
Exactly that. Same goes with going from Gingerbread to Jelly Bean.
That critical intermediate rom... Is CM9
In other words, to safely preserve your IMEI,
Froyo/GB ---> CM9 ----> CM10/10.1/JB
Sent from my GT-P7510 using Tapatalk HD

IMEI screwed up, can't restore

So I got this Captivate to unlock for a friend of my dad's.
I followed all the usual steps, it actually worked, but in the process somehow the IMEI got messed up and throws an IMEI error after boot.
I tried all the known guides for fixing the IMEI but nothing worked.
Unfortunately, the original backup of the /efs/ folder is lost
Is there any way to fix this?

Some have been able to recover from the imei problem by flashin back to Stock Firmware and then u could back up the efs folder after the flash. U could try Stock GB 2.3.5 i897ucKK4. Look in my sig link below if u r on a pc or just go to Stock Roms - One Clicks Master Collection stickied thread in the Dev forum...Post #3
Sent from my SGH-I897 using xda premium

4-2ndtwin said:
Some have been able to recover from the imei problem by flashin back to Stock Firmware and then u could back up the efs folder after the flash. U could try Stock GB 2.3.5 i897ucKK4. Look in my sig link below if u r on a pc or just go to Stock Roms - One Clicks Master Collection stickied thread in the Dev forum...Post #3
Sent from my SGH-I897 using xda premium
Click to expand...
Click to collapse
Already tried it twice
I did find a nandroid backup of the EFS, gonna try and work with that somehow.
Edit: Used Nandroid Explorer to extract files, copied over the EFS folder, back to normal!
So lucky I nandroided before I started.
Thanks for the help

[Q] IMEI NULL/NULL Baseband UNKNOWN

My brother owns an AT&T cappy...n after some months of custom rom flashing, he gave me the phone asking me to repair it.
It has stopped reading the sim card, when i checked the imei of the device it gave me a popup of IMEI null/null..also the baseband version is also unknown..
I have many a times flashed the stock rom as every thread about my problem is telling me to do..
also used galaxy s unlock, app for factory unlocking GS devices..but know success
i seriously want to give it a last try before handing it over for a repair outside..
any help would be highly appreciated!!!!!:crying:

Yep, usually using Odin or Heimdall to return to stock firmware should restore the imei. Have u tried to flash to Stock KK4 firmware yet ? The Odin or Heimdall One Clicks for i897ucKK4 can be found here... http://forum.xda-developers.com/showpost.php?p=18370912&postcount=3.

yess!! many a times..but no success

I also wanted to add that :-
during the galaxy s unlock method..i usually get the busybox problem error...though i've installed and verified it many a times

With all the months of flashing that ur brother did...i would think there would be a backup of the efs folder on the sdcard?? Some roms and kernels, when flashed, will create the efs backup for u.

yess!! hopefully dere's an EFS folder.. but i was too bugged up when googling for the method for restoring it..
n also i'm not sure whether the folder is fine or corrupted/messed up..
also i'll be greatful if i'll get to know the easiest step by step process of restoring it.:good:

gautamchawla195 said:
yess!! hopefully dere's an EFS folder.. but i was too bugged up when googling for the method for restoring it..
n also i'm not sure whether the folder is fine or corrupted/messed up..
also i'll be greatful if i'll get to know the easiest step by step process of restoring it.:good:
Click to expand...
Click to collapse
Its as simple as replacing the current one with the backup one.
Sent from my SGH-I747 using xda app-developers app

??
Where to replace...in the root of the system or the SD card,???

busybox error!!!
Can anyone tell me about the BUSYBOX ERROR I'm receiving..??

gautamchawla195 said:
Where to replace...in the root of the system or the SD card,???
Click to expand...
Click to collapse
If you check on the internal sd, you'll see an efs folder. Should probably take a look for yourself before asking those questions
Sent from my SGH-I747 using xda app-developers app