[Q] /efs backup

---

Hello. I need help with backing up my /efs folder. I tried different methods and none seemed to work.

Phone: GT-S5660 Gio

Network Lock [OFF]
Network Subset Lock [OFF]
SP Lock [OFF]
CP Lock [OFF]

Android: 2.3.3
PDA : S5660XXKPO
PHONE : S5660XXKPA
CSC : S5660OXFKP5

Lurking the forums I tried different methods with no luck:

C:\sdk>adb shell
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
$ su
su
# tar zcvf /sdcard/efs-backup.tar.gz /efs
tar zcvf /sdcard/efs-backup.tar.gz /efs
tar: not found
# exit
exit
$ exit
exit

=======================

C:\sdk>adb shell
$ su
su
# busybox tar zcvf /sdcard/efs-backup.tar.gz /efs
busybox tar zcvf /sdcard/efs-backup.tar.gz /efs
tar: /efs: No such file or directory
tar: error exit delayed from previous errors
# cat /dev/block/stl3 > /sdcard/efs_dev-block-stl3.img
cat /dev/block/stl3 > /sdcard/efs_dev-block-stl3.img
/dev/block/stl3: Invalid argument
# exit
exit
$ exit
exit

This method creates efs_dev-block-stl3.img (0 bytes) and efs-backup.tar.gz (29 bytes)

=======================

EFS Pro

Checking Device Connection... Device Connected!
Restarting ADB Server... Okay!
Checking ROOT Access... Device Has ROOT Permissions!
Backing Up Device's '/efs' Folder, Please Wait...
Creating EFS Backup TAR Archive... EFS Backup Failed!
Operation Finished!

With the ISO option the program freezes.

=======================

C:\sdk>adb shell
$ su
su
# dd if=/dev/block/stl4 of=/sdcard/efs.rfs
dd if=/dev/block/stl4 of=/sdcard/efs.rfs
/dev/block/stl4: cannot open for read: Invalid argument
# exit
exit
$ exit
exit

=======================

I also tried this:

mount
rootfs / rootfs ro,relatime 0 0
tmpfs /dev tmpfs rw,relatime,mode=755 0 0
devpts /dev/pts devpts rw,relatime,mode=600 0 0
proc /proc proc rw,relatime 0 0
sysfs /sys sysfs rw,relatime 0 0
none /acct cgroup rw,relatime,cpuacct 0 0
tmpfs /mnt/asec tmpfs rw,relatime,mode=755,gid=1000 0 0
tmpfs /mnt/obb tmpfs rw,relatime,mode=755,gid=1000 0 0
/dev/stl14 /cache rfs rw,nosuid,nodev,relatime,vfat,llw,check=no,gid/uid/rwx,ioc
harset=utf8 0 0
/dev/stl13 /data rfs rw,nosuid,nodev,relatime,vfat,llw,check=no,gid/uid/rwx,ioch
arset=utf8 0 0
/dev/stl12 /system rfs ro,relatime,vfat,log_off,check=no,gid/uid/rwx,iocharset=u
tf8 0 0
none /dev/cpuctl cgroup rw,relatime,cpu 0 0
/dev/block/vold/179:1 /mnt/sdcard vfat rw,dirsync,nosuid,nodev,noexec,relatime,u
id=1000,gid=1015,fmask=0702,dmask=0702,allow_utime =0020,codepage=cp437,iocharset
=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
/dev/block/vold/179:1 /mnt/secure/asec vfat rw,dirsync,nosuid,nodev,noexec,relat
ime,uid=1000,gid=1015,fmask=0702,dmask=0702,allow_ utime=0020,codepage=cp437,ioch
arset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
tmpfs /mnt/sdcard/.android_secure tmpfs ro,relatime,size=0k,mode=000 0 0
/dev/block/dm-0 /mnt/asec/com.sportstracklive.stopwatch-1 vfat ro,dirsync,nosuid
,nodev,relatime,uid=1000,fmask=0222,dmask=0222,cod epage=cp437,iocharset=iso8859-
1,shortname=mixed,utf8,errors=remount-ro 0 0
/dev/block/dm-1 /mnt/asec/com.speedsoftware.rootexplorer-1 vfat ro,dirsync,nosui
d,nodev,relatime,uid=1000,fmask=0222,dmask=0222,co depage=cp437,iocharset=iso8859
-1,shortname=mixed,utf8,errors=remount-ro 0 0
$

=======================

With Root Explorer I am unable to find the /efs

Sorry for the long post, but what am I missing?
Best regards, V a L y O.

STOP!

The first rule with the Gio is not to mess with the EFS partition if you don't know what you're doing.

It is located in stl5, but you very much risk corrupting it solely by mounting and reading it.

Corruption in this case means a bricked phone or a blank IMEI, which means no phone service.

Either backup bml5, or work in recovery mode.

Thank you for the replay.

I know that messing with the stl5 can brick the phone. Well, that already happened once when I used Odin to flash a wrong 2.3.5 version. Lucky for me, It was repaired under warranty.
That's why I want to make a backup to the system files.

bml5 is backed up. Is it enough to fix the phone in case I brick it again?

Best regards, V a L y O.

now my phone have blank imei
but, i still can use it for sms, call & internet
is anyone here know how to restore it?
lucky, in indonesian imei is not requirement for gettiong mobile service service

Originally Posted by phiexz

now my phone have blank imei
but, i still can use it for sms, call & internet
is anyone here know how to restore it?
lucky, in indonesian imei is not requirement for gettiong mobile service service

Same here! I live in the Netherlands and also have a blank IMEI(IMEI is 000000000000) but still evrything works except swype install because it requires an IMEI number. Somebody know how to fix it? maybe to use somebody elses IMEI? with /efs restore or is there an way to import my own IMEI in somebody elses /efs backup?