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(Q) Efs backup

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thay
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Arrow (Q) Efs backup

Is there any valid reason for backup EFS in galaxy nexus ?
In other samsung devices efs is stored in the / dir but in this device is different.
 
Goat_For_Sale
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(Last edited by Goat_For_Sale; 5th January 2012 at 01:51 PM.)
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Its also good to have backups, incase something gets corrupted its nice to have it.

http://forum.xda-developers.com/show....php?t=1352371
Current Phone: Galaxy Nexus
Last Phone: Samsung Nexus S i9020 - ICS 4.0 Tweaked by BRainmaster
Previously on: HTC Desire


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thay
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Quote:
Originally Posted by Goat_For_Sale View Post
Its also good to have backups, incase something gets corrupted its nice to have it.

http://forum.xda-developers.com/show....php?t=1352371
Test but what is the correct way to backup and to restore ?
 
silow
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(Last edited by silow; 5th January 2012 at 08:53 PM.)
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The image backup would probably serve you best. Rooted, ADB, and busybox installed:

Backup
Code:
adb shell
su
busybox dd if=/dev/block/platform/omap/omap_hsmmc.0/by-name/efs of=/data/media/my_efs_backup.img
Restore
Code:
adb shell
su
busybox dd if=/data/media/my_efs_backup.img of=/dev/block/platform/omap/omap_hsmmc.0/by-name/efs
I should mention that this puts an image backup at the root of the internal sd. You will want to copy this off and save it somewhere safe, preferrably multiple places.
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thay
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Quote:
Originally Posted by silow View Post
The image backup would probably serve you best. Rooted, ADB, and busybox installed:

Backup
Code:
adb shell
su
busybox dd if=/dev/block/platform/omap/omap_hsmmc.0/by-name/efs of=/data/media/my_efs_backup.img
Restore
Code:
adb shell
su
busybox dd if=/data/media/my_efs_backup.img of=/dev/block/platform/omap/omap_hsmmc.0/by-name/efs
I should mention that this puts an image backup at the root of the internal sd. You will want to copy this off and save it somewhere safe, preferrably multiple places.
Very well fine thank's
This info is important and should be highlighted for prevent damage of imei after a bad flash
 
Keneez
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Is there a way to backup efs without busybox installed?
 
ArmanUV
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Quote:
Originally Posted by Keneez View Post
Is there a way to backup efs without busybox installed?
Use this instead to backup efs and radio:

Code:
adb shell
su
for i in efs radio
do
dd if=/dev/block/platform/omap/omap_hsmmc.0/by-name/${i} of=/sdcard/${i}.img &
done
Galaxy Nexus GSM
 
M7amad90
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Quote:
Originally Posted by ArmanUV View Post
Use this instead to backup efs and radio:

Code:
adb shell
su
for i in efs radio
do
dd if=/dev/block/platform/omap/omap_hsmmc.0/by-name/${i} of=/sdcard/${i}.img &
done
Do you have a GSM Nexus ? if so, can u upload the backup image ! i have a broken efs partition and i want to fix it
 
M7amad90
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btw is it possible to fix Corrupted efs with another one's working efs ?
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Quote:
Originally Posted by M7amad90 View Post
btw is it possible to fix Corrupted efs with another one's working efs ?
Not legal (most likely) since you'd have a duplicate of their IMEI.

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