Database Develop

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

Flashed CM10 Jelly bean No Service

So I'm going to assume that my IMEI is gone as the one that is listed under 'about phone>status' is different than the one printed on my phones manufacturer box. The one listed appears to start with 0049. I have verified the APN settings on my samsung galaxy s captivate are correct per my carrier - Straight Talk. Any help is appreciated, thanks.
I currently have flashed,
Kernel
Devil3-1.0.0-rc3-cappy-cfs-bln-cmc
ROM
CM10 JellyBean V2 with gapps + su

Try restoring your IMEI backup folder located in your Internal SD and see if you get service again.
Sent from my SGH-I897 using xda app-developers app

Nick0703 said:
Try restoring your IMEI backup folder located in your Internal SD and see if you get service again.
Sent from my SGH-I897 using xda app-developers app
Click to expand...
Click to collapse
Sorry to ask but could you provide me with detailed steps on how to do this? I've already flashed back to an earlier version of android 2.x using odin3 one click but I'd like to know for future reference.

Check out this post. I've helped someone before with the same problem. http://forum.xda-developers.com/showpost.php?p=28936532&postcount=3
If it's still not clear, just ask me I'll make another one in detailed for you!
Sent from my SGH-I897 using xda app-developers app

Nick0703 said:
Check out this post. I've helped someone before with the same problem. http://forum.xda-developers.com/showpost.php?p=28936532&postcount=3
If it's still not clear, just ask me I'll make another one in detailed for you!
Sent from my SGH-I897 using xda app-developers app
Click to expand...
Click to collapse
Thanks for the reply, I figured that was a possible solution but wasn't sure about copying entire folder. I had read posts about copying just the .nz_data.bin. I appreciate your help.

hmmm. Still seem to be having some trouble. I had flashed with odin one click to gingerbread 2.3.5 and made a copy of the efs folder to the internal storage using root browser. I've moved the nv_data.bin & imei folder & nv_data.bin.md5 over and now it's reporting the IMEI as unknown. I've played around with permissions setting the user:group to radio. and also tried 1001:radio w/ rwx---. I also tried clearing the dalvik cache afterwards in hopes that it would rebuild stuff. Not really sure what I am missing, anyways I'll probably flash to gingerbread again and make another backup to the internal storage with file manager in CWM, I'll then reflash to CM10 JellyBean and try to move again. Let me know if I am missing something.
Also do you have any idea why my efs partition is getting corrupt / overwritten when I am flashing? I've been following instructions in the thread for CM10 JellyBean 4.1.1 and It seems the 3 or 4 times I've flashed this devilkernel rc3 and then the cm10 jellybean v2 + apps + su package that my efs gets messed up. Thanks again.

IMEI Issues

I recently updated my ROM to Cyanogens CM10 Nightly and am having issues with the IMEI not being valid.
Yes, I have attempted the use of copying and pasting it from the backup.
There is no efs folder in the backup
The only efs folder is in the root directory.
Does anyone know how to resolve this issue? Thanks
I also did look for the answer before posting this. Have not found it on here.

This is why it is advisable to copy your EFS folder to a safe place before you start flashing ROMs. I have no idea if your IMEI is recoverable, unfortunately.

See this thread... http://forum.xda-developers.com/showthread.php?p=30711193
Sent from my SGH-I897 using xda premium

You can always try flashing back to stock ! And always take the sim card out before you flash and of course back up efs folder!
Sent from my SGH-I897 using xda app-developers app

Flashing modem/radio

I need some help flashing a modem onto my I896. I'm currently running the Helly Bean version of CM10 with the devilkernel. I boot into recovery mode and install the .zip file from SD card but afterwards I get no data signal/connection whatsoever. Am I doing something wrong? I'm trying one of the modems found here:
http://forum.xda-developers.com/showthread.php?t=1703597

Check if your imei starts with 004...if it is, the imei is broked and you need to restore it. I think some people in cm10 threads said to copy paste your backed up efs folder. A solution that MIGHT work for you is to flash to a stock ROM, but like I said, it might not work since all captivates are built differently. I can confirm that it works for me though. Build# 1101
Sent from my Nexus 7 using xda app-developers app

panda_mode said:
Check if your imei starts with 004...if it is, the imei is broked and you need to restore it. I think some people in cm10 threads said to copy paste your backed up efs folder. A solution that MIGHT work for you is to flash to a stock ROM, but like I said, it might not work since all captivates are built differently. I can confirm that it works for me though. Build# 1101
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
My IMEI number is good, doesn't start with 004. Maybe I'll try flashing a different rom.

Perhaps try a modem from the development sticky?
Sent from a jelly bean

[Q] No GSM Network Found: cm-10.1-20130609-NIGHTLY-p1.zip

Hi Experts,
My device is GT-P1000. I was able to flash the nightly built from cyanogenmod site. I flashed cm-10.1-20130609-NIGHTLY-p1.zip. By the way, I came from AOKP ICS rom.
All is working well for me for the basic tasks that I've tested except that it can't detect our mobile networks here in Singapore which is pretty much a deal breaker. Wifi, bluetooth, etc. are okay. You can see in my attachment that it can't find any GSM network even if I search manually. Is this rom not compatible to Singapore local telcos? Did I miss anything? May be you experts got some ideas.
I have searched the android development forum for CM10.1 Nightly but can't find any relevant solution. Hence, I try my luck here if any of you guys experienced the same issue and was able to solve it.
Thanks in advance.
/f

What is your IMEI showing? If not 35xxxxx, say unknown, or 0049xxx then it won't work. Unknown is due to broken modem.bin. Wrong IMEI is due to corrupted EFS. Either restore from backup found in your sdcard or restock then reflash.
Sent from my GT-N7100 using xda app-developers app

unknown IMEI
priyana said:
What is your IMEI showing? If not 35xxxxx, say unknown, or 0049xxx then it won't work. Unknown is due to broken modem.bin. Wrong IMEI is due to corrupted EFS. Either restore from backup found in your sdcard or restock then reflash.
Sent from my GT-N7100 using xda app-developers app
Click to expand...
Click to collapse
Hi Priyana,
Thanks for your reply. You're correct. I checked the IMEI and it's unknown(shown in attached image).
Correct me if I'm wrong, I need to restore to my backup AOKP ICS rom and then flash this CM10.1 rom again?
Or I need to flash a stock Gingerbread rom then flash CM10.1 rom again?
Thanks in advance,
/f

hi
the best way
flash cm9.1 befor flash cm10.1
work gsm

Unknown is due to broken modem. Just to to development subforum, there is a sticky thread for modem.
Get the JPZ modem, but don't flash it.
Unzip it, just copy the modem.bin to replace the one in /radio/ of your device.
Use root explorer or similar. Reboot and check baseband again. If IMEI still unknown, better restock.
Sent from my GT-N7100 using xda app-developers app

jalil123 said:
hi
the best way
flash cm9.1 befor flash cm10.1
work gsm
Click to expand...
Click to collapse
Hi Jalil,
I tried what you advised but still no luck. The IMEI is still unknown. I even restore my AOKP rom but still the same issue is happening. Thanks though.
I downloaded a stock firmware (gingerbread) and planning to flash it if priyana's advice doesn't work.
I will try priyana's suggestion first before I flash a stock firmware.
Hi Priyana,
I saw the thread that you replied in back in 2012 Oct. Will try your advice. Thanks.
/f

have you also check if you have a backup folder in your sdcard or external sdcard
that has efs folder in it.
Pick the oldest one which is more likely to be the good copy.
Copy the content to replace the one in /efs

Also make sure that you show hidden files in the file explorer, or you will miss important files from that efs back up folder.
Verstuurd van mijn GT-P1000 met Tapatalk

Fixed. Million THANKS guys!
Hi Priyana, KasSGT and Jalil,
I was able to fix my device. I did flash a stock rom, root it, and then flash the CM10.1 rom. I now backed up the /radio directory just to be sure.
Thanks for all your advice.
/f