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 Can IMEI or eds folder be restored from carrier/other if my backup is obsolete?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

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

Insert SIM / no IMEI / baseband unknown after official JB update

hello...after the update from GB to the russian JB ROM i have these problems: insert SIM,my IMEI is missing and baseband unknown...i have followed the exact tutorial..i have had galaxy ace before so i'm not a total stranger to flashing thru odin...i have tried wipe data , wipe cache, factory reset, rooting and deleting dalvik cache and nothing...i reflashed back to GB..worked fine but with the same problems...everything is working fine , wireless and bluetooth...i can boot into recovery mode and downloading mode with no problems...i have read some things about the EFS folder...i didnt do a backup of it...any advice?

If the imei is missing, you destroyed the device. You can try to get it back. There are a few guides. Or you can get it serviced..
Sent from my GT-I9070 using xda premium

Shaaan said:
If the imei is missing, you destroyed the device. You can try to get it back. There are a few guides. Or you can get it serviced..
Sent from my GT-I9070 using xda premium
Click to expand...
Click to collapse
Any links to those guides? thanks

I think you can fix it, do some research, next time backup efs partition
Edit: you downgraded jb to gb?
Sent from my GT-I9070 using xda app-developers app

frapeti said:
I think you can fix it, do some research, next time backup efs partition
Edit: you downgraded jb to gb?
Sent from my GT-I9070 using xda app-developers app
Click to expand...
Click to collapse
yes...but the same problem...everything else is working fine...and another thing..i've read that flashing this jb rom wouldnt increase the binary count but for me it did...got to 7..

Try this http://gsmforum7.blogspot.com.ar/2012/04/samsung-android-repair-efs-imei-repair.html?m=1
Sent from my GT-I9070 using xda app-developers app

A3D said:
yes...but the same problem...everything else is working fine...and another thing..i've read that flashing this jb rom wouldnt increase the binary count but for me it did...got to 7..
Click to expand...
Click to collapse
How did you get back to GB? When I flashed GB over JB mine Recovery was not showing. And it didn't boot. I had only Download mode.

shut_down said:
How did you get back to GB? When I flashed GB over JB mine Recovery was not showing. And it didn't boot. I had only Download mode.
Click to expand...
Click to collapse
I just flashed a 2.3.6 official rom from sammobile..nothing else

shut_down said:
How did you get back to GB? When I flashed GB over JB mine Recovery was not showing. And it didn't boot. I had only Download mode.
Click to expand...
Click to collapse
He messed the device. And i am not quite sure he did that..
Sent from my GT-I9070 using xda premium

I have the same problem. Any solution ?
I think this is the only solution http://www.gsmkhmer.com/index.php?topic=8539.0
But you need octopus box which is a little expensive.

efs backup
frapeti said:
I think you can fix it, do some research, next time backup efs partition
Edit: you downgraded jb to gb?
Sent from my GT-I9070 using xda app-developers app
Click to expand...
Click to collapse
How to backup backup efs partition?

digdarsan said:
How to backup backup efs partition?
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1308546
I used this.

only one working solution
You can install jb root it and reset binary counter. Then flash stock gb. Find method in development threads. And den get it serviced. They will replace the motherboard. Hope you have warranty. Else it's 6k for the service. I got the same problem and followed this procedure.

Hi all, Does anyone could fix the imei issue? A friend suddenly appeared no signal and does not recognize the simcard, I checked the IMEI and I get null, I check the baseband and gives me unknown ... You have EFS folder backup previous ... :crying: Please help ...

before install jb root it and reset binary counter. Then flash stock gb
but now cannot install full stok firmware then install stok rom baseband unknown then radio access the root
what is the radio? more than 5 time get access always tiked remember but popup root request
please help
some error is
cannot reparation
powr mgt binary !!y!!!

zakaria9 said:
before install jb root it and reset binary counter. Then flash stock gb
but now cannot install full stok firmware then install stok rom baseband unknown then radio access the root
what is the radio? more than 5 time get access always tiked remember but popup root request
please help
some error is
cannot reparation
powr mgt binary !!y!!!
Click to expand...
Click to collapse
Did you used guide for geting back to GB? It is in top of the post of Q&A or General section of our phone.
Послато са GT-I9070 користећи Тапаталк 4

yes i used guide for geting back to GB
and when use odin binary error is show to me or odin go to red and show field

Hi. Experienced exactly the same problem. In Efs, IMEI folder and modemfs folder is empty. Dnt know if it shud be. Tried tutorials for backing up efs but whts the use if its empty. Pls sumbody help. Is there a hope tht it can b serviced without changing the motherboard.

Sulehri1984 said:
Hi. Experienced exactly the same problem. In Efs, IMEI folder and modemfs folder is empty. Dnt know if it shud be. Tried tutorials for backing up efs but whts the use if its empty. Pls sumbody help. Is there a hope tht it can b serviced without changing the motherboard.
Click to expand...
Click to collapse
It isn't empty and you must backup that it is hidden
I thinks can flash with Odin and restore everything that's my mistake
Sent from my GT-I9070 using Tapatalk

[Q] IMEI Problem. Lost my original back up!

I had my cappy rooted and upgraded to cyanogen mod 10. Everything was running fine for a few days when my cell crashed and rebooted. After it rebooted the IMEI went to the stock IMEI. I tried to run my back up but no luck. Went back to stock but since the EFS file is gone all I get is the stock IMEI. Is it a way to get the file from another cappy and edit it with the right IMEI and other info so it will work on mine? or any other ideas? maybe some Tech who is willing to play with my cappy for a fee? Any help will be appreciated. Thanks guys.

Can you tell me what is ur imei number rite now??
Sent from my SGH-I897 using xda premium

I think you will find the help you need if you read this thread, (you are not the first one to not have a good backup of your efs folder.)
http://forum.xda-developers.com/showthread.php?p=35225094

[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