I'm on aokp build 39 and was using devil kernel. After two days off use my Imei was borked. It's happened twice each time two days. Is there a way to restore Imei on my phone? Without being at a computer? I have the efs file backed up but am unsure what to do with it. I searched Google but couldn't find anything concrete.
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I've also found the post that does it in 9 steps. Just wondering other ways
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This may sound crazy but I have just taken the backup /efs folder and put it on the SD card and used root explorer to copy and overwrite the /efs in the root directory of the phone, rebooted, and everything was fine.
Not sure if its the right way to do it but it worked for me. This was a while back though when I first was experimenting with flashing roms, miui would always screw up the /efs so I would flash back to froyo and overwrite the /efs by using root explorer.
May be worth a try, good luck with it.
I can confirm this works. I used this method on icssgs a few months ago.
Phoned in.....
Wow. Sounds great. Thanks guys. If my Imei gets borked again I'll try that
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Lost my imei again today. Just deleted efs folder reboot. Copied my imei folder over reboot and all was well. Next time I'll try just copying my imei folder.
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Related
I updated to XXBK3 as per the steps mentioned and everything went fine. When the phone booted, the simcard is not getting detected. I have factory reset the phone, changed the sim, tried my sim on another phone (works on another) but not this one.
Revert back to DDKB2 but still sim card is not getting detected. Kindly assist
Update: I have lost all folders in efs folder after flashing XXBK3. Unfortunately i dont have backup of efs folder
The only option left with me now if service center. Since there is no post for efs backup and restoer, i would request if someone can post settings/commands to backup and restore efs.
Hey, maybe you'll laugh, but there do not give any simcard wrong side. Once I flash phone at night and I'm still there giving the wrong side
fataLLik said:
Hey, maybe you'll laugh, but there do not give any simcard wrong side. Once I flash phone at night and I'm still there giving the wrong side
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I didnt understand you.
What i mean is i dont get network and when i try to open Mobile APN, i get message " Please insert SIM..."
This can happen if you have selected the option Phone EFS Clear in ODIN while flashing FW. This would delete the efs folder.
Follow my guide that I sent you for future. I have already backed up mine, but hope I wont need it.
What is the /efs folder? Should I also back it up? Only that folder or all folders under root are to be backed up?
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jesrani said:
What is the /efs folder? Should I also back it up? Only that folder or all folders under root are to be backed up?
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Efs folder contains information about your Phones IMEI no. If you clear it or corrupt it you lose your IMEI and it can only be restored by Service centre if you have not backed it up. Just copying the folder is not enough. You need to back it up in the form that it can be directly flashed to your phone to restore the IMEI and to put your phone back in usable condition, as in india service providers do not support phones without IMEI nos.
Dude can u give us a walkthru of how to back up efs
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Sure I will.
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http://forum.xda-developers.com/showthread.php?t=859914
This process works absolutely fine. Just tried it.
trip007in said:
Efs folder contains information about your Phones IMEI no. If you clear it or corrupt it you lose your IMEI and it can only be restored by Service centre if you have not backed it up. Just copying the folder is not enough. You need to back it up in the form that it can be directly flashed to your phone to restore the IMEI and to put your phone back in usable condition, as in india service providers do not support phones without IMEI nos.
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Is the link given by manu1991 okay in your opinion? According to Post#2, "An alternative to the backup part is to use Root Explorer and zip the whole /efs folder onto your external sd card. (or wherever you want)". Is this possible and reliable? I tried the option to zip folder in "Super Manager" but got an empty file.
No root explorer should not be used to back up this folder. Follow the link and back up your efs folder.
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manu1991 said:
http://forum.xda-developers.com/showthread.php?t=859914
This process works absolutely fine. Just tried it.
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Ok, I tried this and made the tar.gz file directly in my external sd card. I got a file of size 35Kb? Checked with 7-zip, seems to contain all files. Also made the .gz file using terminal emulator and got same size. In Super Manager the /efs folder seems to be 5Mb in size. I also extracted the .gz file and the uncompressed size is indeed about 5Mb. Can it really be compressed to 35Kb or is there some mistake?
jesrani said:
Ok, I tried this and made the tar.gz file directly in my external sd card. I got a file of size 35Kb? Checked with 7-zip, seems to contain all files. Also made the .gz file using terminal emulator and got same size. In Super Manager the /efs folder seems to be 5Mb in size. I also extracted the .gz file and the uncompressed size is indeed about 5Mb. Can it really be compressed to 35Kb or is there some mistake?
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yes, it can. If the files has a lot of zeroes inside. BTW here is only 3 files are very big:
nv_data.bin, .nv_data.bak and .nv_core.bak and as I can see they are have a lot of zeroes.
jesrani said:
Ok, I tried this and made the tar.gz file directly in my external sd card. I got a file of size 35Kb? Checked with 7-zip, seems to contain all files. Also made the .gz file using terminal emulator and got same size. In Super Manager the /efs folder seems to be 5Mb in size. I also extracted the .gz file and the uncompressed size is indeed about 5Mb. Can it really be compressed to 35Kb or is there some mistake?
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Yes it is compressed. Just pull out the efs folder out of the archive and see check the size, its 5.03MB for me.
Thanks falex and trip
I also made image of stl3 and it is about 6mb.
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EFS / IMEI changes to Fake frequently.
With regards to your post on EFS restore, thanks for the excellent instructions I managed to get IMEI back but noticed that it gets changed quiet frequently when I am on any version of Gingerbread so I downgraded my self to Froyo and I notice that the IMEI doesnt change, Could you kindly advise me so to get it working when I am on gingerbread. Does it have anything to do with bootloaders. The restore method I used is to flash via Odin and no other commands there on.
ThanK You In advance.
i have the same troubles
i try many methods
last i failed
now i just play t959 as a pda
I believe the Nitrality app has an EFS backup feature
Good morning from Argentina!
I have a problem to restore my /EFS I have Froyo LUBKB1 (Argentina) coming from KPQ and the /efs is broken.
I have a backup from a functional EFS directory but when I try to copy it with Root Explorer, it seems that it copies it but when I reboot, EFS directory is empty.
Is there any possibility to create the .img with ADB from a directory which is in the sdcard?
Regards
Try this man: http://forum.xda-developers.com/showthread.php?t=1308546
I still have my busted up infuse that keeps getting a no carrier message. It's not the sim card as I have tried this sim in my other phones and it works fine. The imei is also missing so I'm pretty sure I deleted the efs some of how... How do I fix this?
Do you have a backup of the EFS?
Last person that went through this had to return the phone to Samsung.
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I too had this issue call art and they will walk you thru entering the numbers you need
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Who's art? You mean call Samsung?
Lol. Att. Sorry
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Jmatt he's Canadian i think he might be on Rogers.
Lol. Didn't catch that. Just call her provider and tell them that ur not able to get online they will run u thru tests and find ur imei is missing
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if you remount the EFS RW and simply delete all the files in there it will work fine. You must have a valid EFS partition for anything to work. Deleting the data on the EFS reverts your device to a default IMEI and I think it's carrier unlocked as well.
AdamOutler said:
if you remount the EFS RW and simply delete all the files in there it will work fine. You must have a valid EFS partition for anything to work. Deleting the data on the EFS reverts your device to a default IMEI and I think it's carrier unlocked as well.
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wow thanks for the insight but im not exactly too sure how i remount the EFS RW. I have root manager and i reflashed the rom back to stock rogers with the partition and everything back to original. Should i just re-root it and then delete the EFS ? where is the EFS folder anyways?
bump itttttttttttttt
Hello everyone I been slowly learning being this is my first Android device. I'm currently on VB and wanted to try out cm7 and like roms. I'm just concerned with the efs problem people are having (which I'm sure it's user error not following directions) .. Also the other thing I'm confused about what is the process to update a cm7? Do I need to backup and restore efs again or is backup stored on the sd card. I will also have a copy of my efs on my computer. I been learning a lot here. And hope I don't get bashed for asking but I'm the type of person who likes to learn so someday I can contribute to others. Thanks again everybody.
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Make sure you back up your ENTIRE efs folder to your SDcard as well as a PC. If you do that you can mess up as much as you want and still get your IMEI back. If you follow directions in the CM7 thread you should be safe to convert. If you know how to use heimdall command line and have it installed I do it the old way which I think is much faster. Once your on MTD you can flash between ROMs without having to run any of the backup scripts again. Going back to BLM is as simple as a oneclick with bootloaders(although even that may be overkill).
I was planning to use cwm to convert to mtd and back up efs. But was also going mount /system after efs backup so I can then transfer and backup my /system including my efs files. Then I will continue with the process. Would this be good enough to convert?
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Back up your EFS folder first before you convert to MTD. Use a root explorer back up level folder twice. You'll see a folder called "efs". Copy it to your SDcard. Once that is done connect your phone to a PC and copy the folder from your SDcard to the PC. Now you have two backups of your ORIGINAL efs folder. Once that is done follow any of the ways to get onto MTD.
hechoen said:
Back up your EFS folder first before you convert to MTD. Use a root explorer back up level folder twice. You'll see a folder called "efs". Copy it to your SDcard. Once that is done connect your phone to a PC and copy the folder from your SDcard to the PC. Now you have two backups of your ORIGINAL efs folder. Once that is done follow any of the ways to get onto MTD.
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Thank you hechoen for clarifying that. So to upgrade to a new build do I just do the process as a bml rom? Just flash build and restore efs.. In that case?
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Yep. Once on MTD just reboot recovery wipe cache data system. Flash new build/ROM. I don't reflash the efs restore but that shouldn't be a problem if you want to.
Thanks so much man for your patience in making me understand how it works. So from what I understand once I'm converted to mtd my efs should restore from one rom to another. Btw I found the efs folder and backed up to sd card and onto the computer will convert to mtd once cm7 11 gets released.. :thumbup:
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No worries. Glad to help. Now that you have your original efs folder backed up flash away.
I say you wait until release 11. A lot of fixes and a much simpler flashing procedure.
FBis251 said:
I say you wait until release 11. A lot of fixes and a much simpler flashing procedure.
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Will do thanks for the input FB!! :thumbup:
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Okay. First off, some background data. about a week ago my phone quit working and wouldn't let me send or recieve calls or anything. After exploring a little bit I found I had no IMEI or baseband. Both said unknown. I tried the imei fix in the cm10 thread, and it didn't work. So, I looked in my EFS folder and there were only 4 things in there. An imei folder, root folder, .nwksimpin, and nv.log i didn't have an nv_data.bin or anything. I've been searching all over and I was wondering if there is anyway to crate a new one or something. maybe get someone else's and change the lines in it to have my iemi number or the generic samsung. I really need a phone and don't know what to do. Also, for some reason when i tried to revert back to stock it deleted my entire internal sd card. so any efs backups i used to have were lost. If anyone could help, I would be eternally thankful.
I was on CM11 and One day i lost the IMEI number of my phone and lost all network. I think i flashed an update, dont remember clearly. I think the EFS folder was corrupted. I gave the phone to samsung service center and they were not able to fix it. Can any one help me? I dont have any backup.
ANyone? I tried flashing the stock value pack, didnt work
Cm11 suppose to do a efs backup in SD card. Look for it, if found replace efs folder with it and reboot. May work. Good luck.
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sam_777 said:
Cm11 suppose to do a efs backup in SD card. Look for it, if found replace efs folder with it and reboot. May work. Good luck.
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Oh man!!! I flashed stock over it and there was no sd card, only internal sd! Any other method? Flashing regional stock or something?