EFS Backup from device (without PC) [Update 11Feb14]

[bandroid842]

Read few post above and try that.

Sent from my GT-N7100 using xda premium

I DID see the post about sdcard1 and tried it, but nothing happened. I also tried the method where I simply do:

su
reboot nvbackup

But I didn't see anything happening.

 

[xenon92]

I DID see the post about sdcard1 and tried it, but nothing happened. I also tried the method where I simply do:

su
reboot nvbackup

But I didn't see anything happening.

use "sdcard0".

Following is valid for all ROMs.
Open Mobile Terminal.

Type:

 ls /storage

It will show you the names of the internal and external memory with which the ROM has mounted the storage locations.

Leave "emulated".

Use the other names in the command provided in the OP. "sdcard0" is generally for internal storage. "sdcard1" / "extsdCard" is external sd card (ofcourse).

I think you should mention it in OP too, to use "sdcard0" as internal memory for the command instead of "extSdCard" as not everyone has an external memory card and this name differs from stock ROM to AOSP based ROMs.

 

[dr.ketan]

Yeah correct, will update to op once have pc access.

Sent from my GT-N7100 using xda premium

 

[dr.ketan]

Updated OP.
If time permits then will make Aroma installer to make EFS backup with different option like stock/AOP ROM and INT/ExtSD card. I think this will easy for newbies.

 

[A.S._id]

Hi doc
Im want to educate how to make backup efs for flash via odin:
$ su
# make_ext4fs -s -l 20M /sdcard/efs.img /efs
# cd /sdcard
# tar -c efs.img >> EFS.tar
# md5sum -t EFS.tar >> EFS.tar
# mv EFS.tar EFS.tar.md5

or use my new tool
SAMSUNG_N7100_EFS_BACKUP_RESTORE_AUTOMATIC
http://forum.xda-developers.com/showthread.php?t=1922473

 

[dr.ketan]

I am already updating a thread in general section to make backup with aroma

 

[warlycastro]

This is a savior!!

A while ago my EFS got corrupted. Good thing I made backups of efs using this method then I just did the restore using terminal emulator from playstore (free app) and and *poof* got my phone back! though it was bricked!! HAHA

Thanks to the doctor million times!!!

 

[xperiaforme]

I take it size of efs.img files will vary?

 

[dee163]

Can Dr.Ketan help.

I have used your method to restore EFs when flashing custom roms.

I am using 4.3 android with MI6 modem.
I cannot restore efs. when i try to call it tell me not registered to network..


I hope you can help

 

[coolkoushik07]

Updated OP.
If time permits then will make Aroma installer to make EFS backup with different option like stock/AOP ROM and INT/ExtSD card. I think this will easy for newbies.

Doc what is the difference between efs backup and nv data backup and modem backup? If I do backup raw .img of efs, Is it not enough to go ahead?

Sent from my GT-I8552 using Tapatalk

---------- Post added at 03:13 PM ---------- Previous post was at 03:07 PM ----------

That's not good idea, when you copy folder with explorer it will messup permission.

Sent from my GT-N7100 using xda premium

Which permission will be messed up? The original efs folder or just the backup one which I have copied from root??

Sent from my GT-I8552 using Tapatalk

 

[eddyctweets]

Doc I tried this today and it wont work for me I got this

Im running the latest phoenix rom with your wifi patch. I tried also for the external sd card and it wouldnt work either.
I tried your aroma installer via cwm and it seems to run but at the end ive got no folder with the efs backup ???
Any ideas

Sent from my GT-N7100

 

[dr.ketan]

Try this
replace
/sdcard/
with
/data/media/0/

May be 4.3 issue.

 

[eddyctweets]

Try this
replace
/sdcard/
with
/data/media/0/

May be 4.3 issue.

nope still not working http://forum.xda-developers.com/images/smilies/confused.gif

 

[shikhar623]

EFS Backup from device (without PC)

Hi Ketan, Will this method work for MediaTek phones?

 

[prdic]

nope still not working http://forum.xda-developers.com/images/smilies/confused.gif

Try TWRT or note 2 Toolkit, it worked for me. In Twrp tick only efs backup, nothing more.


Btw: worked for me, thanks dr.ketan.

 

[dr.ketan]

Now it's even more easier
Will update op soon
Check out "EFS Tool Samsung N7100"
https://play.google.com/store/apps/details?id=com.yahoo.dr.ketan.efsn7100

 

[Formhault]

Now it's even more easier
Will update op soon
Check out "EFS Tool Samsung N7100"
https://play.google.com/store/apps/details?id=com.yahoo.dr.ketan.efsn7100

Would this work on the Galaxy S4, as well? The I9505 variant (no Exynos). Or... no idea...? :silly:

 

[wesamothman]

Now it's even more easier
Will update op soon
Check out "EFS Tool Samsung N7100"
https://play.google.com/store/apps/details?id=com.yahoo.dr.ketan.efsn7100

You doc always seek perfection ...
Hats off with 10000000 thanks :thumbup::thumbup::thumbup:

 

[dr.ketan]

Would this work on the Galaxy S4, as well? The I9505 variant (no Exynos). Or... no idea...? :silly:

If you send me PIT file of your device then only I can say it will work on that or not.

 

[Formhault]

If you send me PIT file of your device then only I can say it will work on that or not.

Don't think I can.

But nevermind. Just realised PhilZ recovery can backup/restore EFS. Silly me .