Efs folder empty and i didn't do a backup - General Questions and Answers

after downgrading my firmware on my SM-G920L from 7.0 to 6.0 i get failed to mount efs so i installed the 7.0 again hoping it resolved this issue but i still get same issue.
And it seems the efs folder contains no file and i didn't do any backup of it.
can anyone suggest to me anyone or help me with with how i get this files back?
Thanks.

Related

Have anyone tried this tool in our tab2 Efs Pro v1.8.11

Hi asking if any one have tried or could try this tool in our tab 2 devices this is a PC app to save and backup efs folder which contain the mac address and imei info of our tablets in case it is corrupted by flashing custom rooms so we could restore it again so we will be assured that our radio functions will not be corrupted it do not change anything in the system as I know it only take backups of efs folder
http://forum.xda-developers.com/showthread.php?t=1308546

No Wi-Fi after restore

Hi!
I have a huge problem related to most likely /persist folder.
Restoring TWRP backup (which included /persist folder) broke down entire /persist folder so I cannot turn on WiFi. Of course I am stupid, and my backup file has dissapeared after full (with internal storage) wipe...
Can someone help me? Will backup from another phone help? Or maybe flashing stock ROM?
My device is XT1032.
EDIT: I managed to do it myself.

EFS folder problem

Hi I've got a problem.
Times ago i updated to another rom and i missed the efs folder.
I can't flash anything without a efs folder.
i tryed to follow guides on internet to make a efs folder via adb, but without success.
Can some share to me a EFS s7 IMG file, to flash it via Heimdall or Odin?
No, you can't share EFS images, they contain the phones unique IMEI, radios and so forth
Try flashing stock, but if you not backed up EFS and wiped everything, you might need to take it for repair

Efs folder lost

Hi, I lost my efs folder on my samsung galaxy on7 model. any one tell me how to recover efs folder. I have no backup allso. I need help plz. I try to upgrade bt it's not working because efs is empty. What I do now??

Recover efs manually with old Backup

I lost the funcionality Phone in my N8000. I think i lost the imei e someone more else. How can i restore my efs? I have a backup of my efs in format zip and format tar made 5 years ago ( i dont remember what application i used) , but i can not install via Odin or via Twrp, said Invalid Zip format on checking Digest File. I think the problem is checking the md5 generation that is not compatible with Odin and Twrp.
Someone can help me to restore the /efs partition with old backup. Thanks
see your identical post .
I resolved this situation, using Solid Explorer and Qute Terminal with root.
Credits
http://androidadvices.com/restore-imei-efs-folder-galaxy-s3-details/
Thanks
It is not solved, when reboot the system, the imei of phone, N8000 is another, is from another file from i used to recover.
Manually from my backup what files and permissions i have to copy to the /efs in root of my N8000? First i copy nv_data.bin, nv_data.bin.md5 and the folder /imei and works. I do not known the original permissions of the files, perhaps now the problem is this.
Someone can help me?
Thanks
With this guide "[GUIDE] Recover your IMEI in 9 steps. " https://forum.xda-developers.com/galaxy-s2/general/guide-recover-imei-9-steps-t1264021 , i resolved my problem with imei, no problems with reboot, but now i did not have access to Wifi, i can not connect to my Wifi Network.
Someone can help me, how can activate wifi? What files i need to copy from my backup? Before clean the /efs i made a backup the old efs.
Thanks
Flash stock rom .
I flash the stock rom and now i did not have any problems

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