Database Develop

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
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Updated to cm10 0824. Same issue. Should I do a full cwm restore?
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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
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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.
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Correct imei though as in the same as the one under the battery?
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Nope. Its a different one.
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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
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After going back to stock GB, darky resurrection ROM, cm9 and finally cm10. IMEI is back and looking OK. Thanks.
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That's good
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Felt a bit of nostalgia going back through the last 2 years of ROMs lol. Thanks again.
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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

[Q] Bricked Galaxy Mini while unlocking

I followed a "SAFE UNLOCK" method that in the end made my phone stop booting.
Since "Download mode" was still working I flashed using Odin the S5570BVKT4_S5570OROKT2_ORO firmware (Romanian ROM from samfirmware.com)
My problem is that although Android boots, the Phone feature is dead.
*#1234# says Phone: Unknown
What can I do to fix my phone?
Thanks

tughi said:
I followed a "SAFE UNLOCK" method that in the end made my phone stop booting.
Since "Download mode" was still working I flashed using Odin the S5570BVKT4_S5570OROKT2_ORO firmware (Romanian ROM from samfirmware.com)
My problem is that although Android boots, the Phone feature is dead.
*#1234# says Phone: Unknown
What can I do to fix my phone?
Thanks
Click to expand...
Click to collapse
Try dialing *#06#. Is it showing you the imei no. If yes try reflashing the firmware but wipe data and reset it in recovery mode first... but if its showing unknown or 000000000000000. Use it as a mp4 player now because you modified files in the efs partition.... which keeps info about imei... or if you made a backup of efs before unlocking it you can restore it....
Sent from my GT-S5570 using xda premium

How to backup efs ?
Sent from my GT-S5570 using Tapa talk 2

hsay said:
How to backup efs ?
Sent from my GT-S5570 using Tapa talk 2
Click to expand...
Click to collapse
Here:
http://www.comunidadgalaxy.es/viewtopic.php?f=81&t=9673
Change language by Google translate.

You might have gone wrong while working with ODIN.
Click here to see a list of stock firmwares (with bootloader removed - no hard brick risk) and download what you wanted.
Then flash it using ODIN following the steps correctly. See the tutorial here.

ashu.bigsmoke said:
Try dialing *#06#. Is it showing you the imei no. If yes try reflashing the firmware but wipe data and reset it in recovery mode first... but if its showing unknown or 000000000000000. Use it as a mp4 player now because you modified files in the efs partition.... which keeps info about imei... or if you made a backup of efs before unlocking it you can restore it....
Sent from my GT-S5570 using xda premium
Click to expand...
Click to collapse
IMEI is unknown ... so I have now an Android MP3 player

A BigSmoker said:
Here:
http://www.comunidadgalaxy.es/viewtopic.php?f=81&t=9673
Change language by Google translate.
Click to expand...
Click to collapse
I've tried to run EFS Pro 1.81, 1.82 and 2.0.26 and I it couldn't connect my phone. My mobile is still working all right, but I want to make a backup of the EFS info just in case. I wonder whether if somebody have successfully backed up the EFS folder.

Well the file you will pull from your phone is the efs partition, you no need to look into it, you just need a hex editor to look the code
No need of editing anything
And for the backup purpose just backup the efs file you will pull (backup means copying it to a safe place)

dheeraj (dhlalit11) said:
Well the file you will pull from your phone is the efs partition, you no need to look into it, you just need a hex editor to look the code
No need of editing anything
And for the backup purpose just backup the efs file you will pull (backup means copying it to a safe place)
Click to expand...
Click to collapse
You mean the bml5.img file? If so, I've done the backup already. Cheers!

Yeah bml5.img

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..
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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

Undo IMEI clone

Hi, I've got a soft brick then I restored using partitions copy from my friend device.
Now my device has the same IMEI as from device from my friend.
How I restore to original IMEI?
Sent from my GT-I9070 using xda app-developers app

Sorry I was on wrong forum, how do I move?
Sent from my GT-I9070 using xda app-developers app

ask to administrator..they can move your post to other section
my gt-i9070 drop message

do you have your old imei anywhere? like written down or as a backup file? there are apps for imei backup and restore in the play store... if you dont have a backup of your original imei i don't thinm there is any way of recovering it.
Gesendet von meinem GT-I9070P

If you don't have backups you can't recover it, you will need a service box or send back to samsung, but that's risky, because that's not covered by the warranty.
Which files/folders have you copied exactly ?

Szaby59 said:
If you don't have backups you can't recover it, you will need a service box or send back to samsung, but that's risky, because that's not covered by the warranty.
Which files/folders have you copied exactly ?
Click to expand...
Click to collapse
I've overwritten entire EFS partition thru dd.
I do not had backup and the partition was already corrupted.
Sent from my GT-I9070 using xda app-developers app

The original imei should be available on the box in which the phone is shipped. Search it. Then you will have to dd the efs partition as an image file and edit the imei in it using hex.
It's difficult, but your original imei can be recovered!
I do not respond to tech support via PM

I tried it on my phone (ace 2 - same novathor chipset) but after I flashed a new efs my imei still was the same.
Are you sure you didn't changed anything else ?
Also you can try this: *#197328640# in dialer, and search for "NV Restore" or "NV Rebuild" option (for me it's under "Common") I'm not sure how it works, but maybe the phone has some backups on a different partition.

Szaby59 said:
I tried it on my phone (ace 2 - same novathor chipset) but after I flashed a new efs my imei still was the same.
Are you sure you didn't changed anything else ?
Also you can try this: *#197328640# in dialer, and search for "NV Restore" or "NV Rebuild" option (for me it's under "Common") I'm not sure how it works, but maybe the phone has some backups on a different partition.
Click to expand...
Click to collapse
I've tried to delete every file on /efs but cloned IMEI remains.
I think that IMEI is stored or cached anywhere else.
I already tried that option (NV Restore).

Modemfs also contains some files from the EFS partitions RFHAL.DEF/RFHAL folder.
Have you flashed a JB or any firmware with repartition ?
I noticed from a log file in /efs/pre_recovery.log, when the device is repartitioned there is an additional check if the imei is valid or requires a restore.

Szaby59 said:
Modemfs also contains some files from the EFS partitions RFHAL.DEF/RFHAL folder.
Have you flashed a JB or any firmware with repartition ?
I noticed from a log file in /efs/pre_recovery.log, when the device is repartitioned there is an additional check if the imei is valid or requires a restore.
Click to expand...
Click to collapse
Exactly, my 3G stopped working after downgrade using Philippines ROM and I tried check repartition.
My 3G started to work after I copied modemfs partition from my friend device.
Do you know how to recover from that?
Sent from my GT-I9070 using xda app-developers app

Well if you don't have backups it's difficult because I can't even tell where the phone stores the imei, or how does it work.
Of course it's possible to reverse encryption and edit the files from your friends phone but it's VERY difficult.
It's clearly uses a different method, because there is no nv_data.bin (on other Samsung devices the imei/simlock/product code are stored in this file).
If I find anything I'll let you know.
The cheapest sollution is offered by this guy: http://forum.samdroid.net/f70/repair-imei-s2-5729/
Or a very risky sollution: Brick the device and send back to the repair center if it's still under warranty.
Edit: Try flashing that rom again with repartition and see what happens, also check the efs/pre_recovery.log, for me says "valid IMEI & skip restore" so obviously there are at least 2 places for the imei, that's why for me doesn't changes even if I wipe the efs.

I've lost the imei some months ago and i've solved flashing the italian GB firmware, but you can also use another firmware.
Inviato dal mio GT-I9070 con Tapatalk 2

You probably flashed a wrong modem, but basically you didn't lost your IMEI, just the modem part wasn't for your device and it couldn't get the info.
This usually happens when you flash a firmware from different region, for example i9070L rom on i9070 device.

Szaby59 said:
You probably flashed a wrong modem, but basically you didn't lost your IMEI, just the modem part wasn't for your device and it couldn't get the info.
This usually happens when you flash a firmware from different region, for example i9070L rom on i9070 device.
Click to expand...
Click to collapse
There's no way to regenerate/restore the modem part?

I wrote this to giagia96.
In your case I don't know why the phone "decided" to change the imei.

[Q] lost imei

I have nexus 6 in Canada.
I had android 5.0.1. I know it was 5.0.x stock - not OTA updated.
I decided to install chroma rom using the thread here.
http://forum.xda-developers.com/nexus-6/development/rom-chroma-01-11-2015-t3000003
I installed twrp, and chroma.
I followed the instructions and it worked.
I didn't flash a radio myself. just the chroma rom, gapps, and supersu.
It worked yesterday.
This morning I got a message that android phone app stopped.
I could not make phone calls or sms.
I didn't put much thought into the error message.
I wanted something more stock and I just installed lightrom.
I only installed lightrom, no other flashing.
http://forum.xda-developers.com/nexus-6/development/rom-5-1lightromstock-lmy47e-03-19-2015-t3059493
The problem persists -- no phone calls or sms.
now:
I looked at my about phone in the settings and it says unknown IMEI.
Any pointers to how I can fix this?

Did you flash correct radio ?
Can you see your imei ?
If nothing works flash latest stock.
Sent from my Nexus 6 using XDA Free mobile app

What does it say when you type *#06* into the dialer

I see unknown imei in settings about phone status imei info.
I didn't flash a radio individually. I don't know if one of the roms flashed a radio with it.
androiduser2011 said:
Did you flash correct radio ?
Can you see your imei ?
If nothing works flash latest stock.
Sent from my Nexus 6 using XDA Free mobile app
Click to expand...
Click to collapse

ricey1986 said:
What does it say when you type *#06* into the dialer
Click to expand...
Click to collapse
Update:
I had made a twrp backup of the efs partition. I restored it.
Now the phone calls, sms, and everything works.
Anyone know why it lost the imei?
It was working, I didn't flash anything but the imei disappeared.

david1212 said:
Update:
I had made a twrp backup of the efs partition. I restored it.
Now the phone calls, sms, and everything works.
Anyone know why it lost the imei?
It was working, I didn't flash anything but the imei disappeared.
Click to expand...
Click to collapse
hi david,
i have same problem, lost my imei, and unknown baseband
can you upload "twrp backup of the efs partition" please...
i hope that can help me too

david please share efs backup from twrp, hope it help others

His efs backup will not help others. It is unique to his device and will only work for his. Its basically a I'd number. Loosing an imei is serious stuff and makes your phone useless. I'm glad you had a backup. Now I'm curious how so it don't happen to others. Flashing radios won't wipe efs.
Sent from my Nexus 6 using XDA Free mobile app

Should I make backup of EFS partition from time to time? Is it change? Is it depend on ROM? I made a backup after I unboxed Nexus. I have EFS backup on my phone, notebook and external hard drive... I hope it is safe

I had the same issue with a Galaxy S5 a while ago, I had to search and find a IMEI repair tool, which I don't think you will find on XDA as it can be used for bad purposes. But they are out there.

You only need 1 backup but the question is how this is happening. I see a lot of threads about it. So its an issue that we all need to figure out how and get preventative measures figured out
Sent from my Nexus 6

From what I've heard, if you flash all of the stock components through ADB (ROM, bootloader, modem, etc), it will trigger a rebuild of the EFS. I'm not 100% sure of this, but I remember reading something along those lines. I believe the phone has a backup partition for the EFS (which contains the IMEI, MAC Addresses, etc).

Product F(RED) said:
From what I've heard, if you flash all of the stock components through ADB (ROM, bootloader, modem, etc), it will trigger a rebuild of the EFS. I'm not 100% sure of this, but I remember reading something along those lines. I believe the phone has a backup partition for the EFS (which contains the IMEI, MAC Addresses, etc).
Click to expand...
Click to collapse
That sounds fantastic. It should be that way.
Sent from my Nexus 6 using XDA Free mobile app

david1212 said:
Update:
I had made a twrp backup of the efs partition. I restored it.
Now the phone calls, sms, and everything works.
Anyone know why it lost the imei?
It was working, I didn't flash anything but the imei disappeared.
Click to expand...
Click to collapse
upload please...please...please...

henhida said:
upload please...please...please...
Click to expand...
Click to collapse
As others have said. The EFS backup is unique to my device. It won't help you with yours.

If you absolutely cannot regenerate it with the method I said, warranty service is your best bet.
Sent from my SM-N900T using Tapatalk

Never tried this myself, but here is a guide for imei recreation on a Samsung device. At the very least it will give you an idea of some additional things you might try.... http://forum.xda-developers.com/galaxy-s2/general/guide-recover-imei-9-steps-t1264021
Sent from my Nexus 6 using Tapatalk