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?
Sent from my GT-I9003 using XDA App
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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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Click to collapse
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?
Click to expand...
Click to collapse
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 have already clear my phone EFS file due to my selected "Phone EFS Clear" in ODIN. And know the EFS folder in my phone is READ ONLY. Fortunately I have EFS backup file EFS.rfs. Can I use Odin Multi Downloader to restore this file to my phone? Where have I9003 OPS file? Does OPS file is same as PIT file?
You can restore Efs folder with Root Explorer (r/o).
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I have tried to restore EFS files with RE many times. But can not working due to EFS folder is know READ ONLY!
Click that button that says r/w or r/o then try to paste
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mount -o remount,rw /efs
Howdy a while ago i backed up my efs folder with es file explorer but after going to ICS NexusBeam I felt the desire to re back it up. I went to go back in EFS but for the life of me cant find this folder. I now have a folder called "efs backup" in there with a tar file but cant find the same folder i have backed up anywhere. I have root perm and mount sd on.... can someone tell me where this folder is hiding now?
thanks
bumpity bump bump
Can't you do a search in file explorer? We wouldn't know where your backup is.
Sent from my Nexus S 4G running CM7/franco.Kernel
lol i have my backup. its on my computer. i want to RE back it up again but cant find the actual EFS folder on my phone.
How to take backup of EFS partition of Samsung Galaxy Ace Plus (H=GT-S7500)? The KTool by Hellcat is incompatible and I could not backup it using EFS professional. What should I do?
supercfc said:
How to take backup of EFS partition of Samsung Galaxy Ace Plus (H=GT-S7500)? The KTool by Hellcat is incompatible and I could not backup it using EFS professional. What should I do?
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try the efs backup tool by xenon92 on the playstore
Easiest way to backup efs is just download root browser from play store locate efs folder in root browser and move that folder into ur SD card or wherever u want
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Am I the only one who doesn't have efs folder on my phone? Runing CM10.2.
Search the folder in root browser
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I opened Root Explorer and put in search "efs" and it didn't found any folders named efs.
I can see efs in root folder using E S File Explorer, but when I open efs folder ES says it is empty?
Should there have been something in the efs folder?
Hi all just a quick question can you backup EFS without root? I have es file explorer and can see EFS folder can I just copy and paste the folder? I'm fully stock.
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bassist9 said:
Hi all just a quick question can you backup EFS without root? I have es file explorer and can see EFS folder can I just copy and paste the folder? I'm fully stock.
Sent from my Nexus 5 using Tapatalk
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No, I don`t think you can.
You should be able to without root in recovery but will have to be unlocked. You can backup efs in twrp or flash the efs backup zip in recovery (twrp or cwm)
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