How to wipe efs by adb rooted - GSM-Forum

zishhaider · 02-25-2016, 12:38

hi i got sm e700f(5.1.1), i need to write cert, z3x octoplus both failed on bypass msl and wiping efs.. so I decided to give it a shot,, here is some info

Code:

drwxr-xr-x    2 0        0              580 Mar 19  2015 ←[1;34m.←[0m
drwxr-xr-x    4 0        0              660 Mar 19  2015 ←[1;34m..←[0m
lrwxrwxrwx    1 0        0               20 Mar 19  2015 ←[1;36maboot←[0m -> ←[1
;35m/dev/block/mmcblk0p5←[0m
lrwxrwxrwx    1 0        0               20 Mar 19  2015 ←[1;36mapnhlos←[0m -> ←
[1;35m/dev/block/mmcblk0p1←[0m
lrwxrwxrwx    1 0        0               21 Mar 19  2015 ←[1;36mbackup←[0m -> ←[
1;35m/dev/block/mmcblk0p19←[0m
lrwxrwxrwx    1 0        0               21 Mar 19  2015 ←[1;36mboot←[0m -> ←[1;
35m/dev/block/mmcblk0p16←[0m
lrwxrwxrwx    1 0        0               21 Mar 19  2015 ←[1;36mcache←[0m -> ←[1
;35m/dev/block/mmcblk0p25←[0m
lrwxrwxrwx    1 0        0               20 Mar 19  2015 ←[1;36mddr←[0m -> ←[1;3
5m/dev/block/mmcblk0p4←[0m
lrwxrwxrwx    1 0        0               21 Mar 19  2015 ←[1;36mefs←[0m -> ←[1;3
5m/dev/block/mmcblk0p13←[0m
lrwxrwxrwx    1 0        0               21 Mar 19  2015 ←[1;36mfota←[0m -> ←[1;
35m/dev/block/mmcblk0p18←[0m
lrwxrwxrwx    1 0        0               21 Mar 19  2015 ←[1;36mfsc←[0m -> ←[1;3
5m/dev/block/mmcblk0p20←[0m
lrwxrwxrwx    1 0        0               20 Mar 19  2015 ←[1;36mfsg←[0m -> ←[1;3
5m/dev/block/mmcblk0p9←[0m
lrwxrwxrwx    1 0        0               21 Mar 19  2015 ←[1;36mhidden←[0m -> ←[
1;35m/dev/block/mmcblk0p26←[0m
lrwxrwxrwx    1 0        0               20 Mar 19  2015 ←[1;36mmodem←[0m -> ←[1
;35m/dev/block/mmcblk0p2←[0m
lrwxrwxrwx    1 0        0               21 Mar 19  2015 ←[1;36mmodemst1←[0m ->
←[1;35m/dev/block/mmcblk0p14←[0m
lrwxrwxrwx    1 0        0               21 Mar 19  2015 ←[1;36mmodemst2←[0m ->
←[1;35m/dev/block/mmcblk0p15←[0m
lrwxrwxrwx    1 0        0               21 Mar 19  2015 ←[1;36mpad←[0m -> ←[1;3
5m/dev/block/mmcblk0p11←[0m
lrwxrwxrwx    1 0        0               21 Mar 19  2015 ←[1;36mparam←[0m -> ←[1
;35m/dev/block/mmcblk0p12←[0m
lrwxrwxrwx    1 0        0               21 Mar 19  2015 ←[1;36mpersdata←[0m ->
←[1;35m/dev/block/mmcblk0p23←[0m
lrwxrwxrwx    1 0        0               21 Mar 19  2015 ←[1;36mpersist←[0m -> ←
[1;35m/dev/block/mmcblk0p22←[0m
lrwxrwxrwx    1 0        0               20 Mar 19  2015 ←[1;36mqhee←[0m -> ←[1;
35m/dev/block/mmcblk0p8←[0m
lrwxrwxrwx    1 0        0               20 Mar 19  2015 ←[1;36mqsee←[0m -> ←[1;
35m/dev/block/mmcblk0p7←[0m
lrwxrwxrwx    1 0        0               21 Mar 19  2015 ←[1;36mrecovery←[0m ->
←[1;35m/dev/block/mmcblk0p17←[0m
lrwxrwxrwx    1 0        0               20 Mar 19  2015 ←[1;36mrpm←[0m -> ←[1;3
5m/dev/block/mmcblk0p6←[0m
lrwxrwxrwx    1 0        0               20 Mar 19  2015 ←[1;36msbl1←[0m -> ←[1;
35m/dev/block/mmcblk0p3←[0m
lrwxrwxrwx    1 0        0               21 Mar 19  2015 ←[1;36msec←[0m -> ←[1;3
5m/dev/block/mmcblk0p10←[0m
lrwxrwxrwx    1 0        0               21 Mar 19  2015 ←[1;36mssd←[0m -> ←[1;3
5m/dev/block/mmcblk0p21←[0m
lrwxrwxrwx    1 0        0               21 Mar 19  2015 ←[1;36msystem←[0m -> ←[
1;35m/dev/block/mmcblk0p24←[0m
lrwxrwxrwx    1 0        0               21 Mar 19  2015 ←[1;36muserdata←[0m ->
←[1;35m/dev/block/mmcblk0p27←[0m
uid=2000 gid=2000 groups=1003,1004,1007,1011,1015,1028,3001,3002,3003,3006@e7lte
:/ $

Code:

rootfs on / type rootfs (ro,relatime)
tmpfs on /dev type tmpfs (rw,seclabel,nosuid,relatime,size=958432k,nr_inod
146,mode=755)
devpts on /dev/pts type devpts (rw,seclabel,relatime,mode=600)
none on /dev/cpuctl type cgroup (rw,relatime,cpu)
adb on /dev/usb-ffs/adb type functionfs (rw,relatime)
proc on /proc type proc (rw,relatime)
sysfs on /sys type sysfs (rw,seclabel,relatime)
selinuxfs on /sys/fs/selinux type selinuxfs (rw,relatime)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
none on /sys/fs/cgroup type tmpfs (rw,seclabel,relatime,size=958432k,nr_in
56146,mode=750,gid=1000)
none on /acct type cgroup (rw,relatime,cpuacct)
tmpfs on /mnt/secure type tmpfs (rw,seclabel,relatime,size=958432k,nr_inod
146,mode=700)
tmpfs on /mnt/asec type tmpfs (rw,seclabel,relatime,size=958432k,nr_inodes
6,mode=755,gid=1000)
tmpfs on /mnt/obb type tmpfs (rw,seclabel,relatime,size=958432k,nr_inodes=
,mode=755,gid=1000)
/dev/block/bootdevice/by-name/apnhlos on /firmware type vfat (ro,context=u
t_r:firmware_file:s0,relatime,uid=1000,gid=1000,fmask=0337,dmask=0227,code
37,iocharset=iso8859-1,shortname=lower,errors=remount-ro)
/dev/block/bootdevice/by-name/modem on /firmware-modem type vfat (ro,conte
bject_r:firmware_file:s0,relatime,uid=1000,gid=1000,fmask=0337,dmask=0227,
ge=437,iocharset=iso8859-1,shortname=lower,errors=remount-ro)
/dev/block/bootdevice/by-name/system on /system type ext4 (ro,seclabel,rel
norecovery)
/dev/block/bootdevice/by-name/userdata on /data type ext4 (rw,seclabel,nos
dev,noatime,discard,journal_checksum,journal_async_commit,noauto_da_alloc,
rdered)
/dev/block/bootdevice/by-name/cache on /cache type ext4 (rw,seclabel,nosui
v,noatime,discard,journal_checksum,journal_async_commit,noauto_da_alloc,er
anic,data=ordered)
/dev/block/bootdevice/by-name/persist on /persist type ext4 (rw,seclabel,n
nodev,noatime,discard,journal_checksum,journal_async_commit,noauto_da_allo
=ordered)
/dev/block/bootdevice/by-name/efs on /efs type ext4 (rw,seclabel,nosuid,no
atime,discard,journal_checksum,journal_async_commit,noauto_da_alloc,data=o
)
/dev/block/bootdevice/by-name/persdata on /persdata/absolute type ext4 (rw
bel,nosuid,nodev,relatime,data=ordered)
/dev/block/bootdevice/by-name/hidden on /preload type ext4 (ro,seclabel,no
odev,relatime,data=ordered)
/data/privatemode on /mnt/shell/privatemode type sdcardfs (rw,seclabel,nos
dev,relatime,uid=1000,gid=1000,derive=none,reserved=20MB)
/data/knox/secure_fs/enc_media on /mnt/shell/enc_media type sdcardfs (rw,s
l,nosuid,nodev,relatime,uid=1000,gid=1000,derive=none,reserved=20MB)
/data/knox/sdcard on /mnt/shell/knox-emulated type sdcardfs (rw,seclabel,n
nodev,relatime,uid=1000,gid=1000,derive=none)
/data/media on /mnt/shell/emulated type sdcardfs (rw,seclabel,nosuid,nodev
ime,uid=1023,gid=1023,derive=legacy,reserved=20MB)
/dev/block/loop0 on /su type ext4 (rw,seclabel,noatime,data=ordered)
/data/media on /storage/emulated/0 type sdcardfs (rw,seclabel,nosuid,nodev
ime,uid=1023,gid=1023,derive=legacy,reserved=20MB)
/dev/block/vold/179:65 on /mnt/media_rw/extSdCard type vfat (rw,dirsync,se
,nosuid,nodev,noexec,noatime,nodiratime,uid=1023,gid=1023,fmask=0007,dmask
allow_utime=0020,codepage=437,iocharset=iso8859-1,shortname=mixed,utf8,err
mount-ro)
/mnt/media_rw/extSdCard on /storage/extSdCard type sdcardfs (rw,seclabel,n
nodev,relatime,uid=1023,gid=1023,derive=unified)
root@e7lte:/ #

Anyhelp would be much appreciated

adhitya_1978 · 02-25-2016, 12:55

If that's certificate of imei. so mean you already know where is block the certificate will be store.

zishhaider · 02-25-2016, 13:09

Quote:

Originally Posted by adhitya_1978

If that's certificate of imei. so mean you already know where is block the certificate will be store.

it is just a dump log, I will use box for write cert...

iMoG · 02-25-2016, 13:10

Root with CF-Auto root and flash recovery.img from original firmware again, then wipe cache from recovery and proceed.

zishhaider · 02-25-2016, 13:17

Quote:

Originally Posted by iMoG

Root with CF-Auto root and flash recovery.img from original firmware again, then wipe cache from recovery and proceed.

I have already tried restored cache+recovery = same

stanner_austin · 02-26-2016, 10:27

@zishhaider
Hello
If software say msl bypass error that's not mean its MSL error.
New samsung firmware rejecting MSL authorization if warranty is void. i posted this many month go.

You do not need reset efs on most qualcomm just to write cert or unlock. but on security corruption such as null imei or reboot after boot complete need to reset security..

2 solution for such phone.
1 try your luck downgrade baseband and write cert if ur lucky it will accept even if its show null then update baseband back.
2 find samsung combination flash which use for testing internal stuff which ignore all security check made by baseband.

zishhaider · 02-26-2016, 12:48

Quote:

Originally Posted by stanner_austin

@zishhaider
Hello
If software say msl bypass error that's not mean its MSL error.
New samsung firmware rejecting MSL authorization if warranty is void. i posted this many month go.

You do not need reset efs on most qualcomm just to write cert or unlock. but on security corruption such as null imei or reboot after boot complete need to reset security..

2 solution for such phone.
1 try your luck downgrade baseband and write cert if ur lucky it will accept even if its show null then update baseband back.
2 find samsung combination flash which use for testing internal stuff which ignore all security check made by baseband.

@stanner_austin thanks man, at least some one answered , mobile is dead now, blang said post in forum and even after 48 hours no reply, but you replied even i m not your product user, that is called support, thumbs up... here it is my thread and i hope as usually will be deleted...

http://forum.gsmhosting.com/vbb/f453...ailed-2057380/

genhack23 · 02-26-2016, 22:31

The easy ways now is restore emmc (emmc direct)... write boot partiton and rom1(blank efs) after u can write easy u cert...

loniryan · 03-03-2016, 15:37

delete efs folder..under system forlder with root and file explorer

dicle_gsm · 03-03-2016, 16:07

adb shell su -c "dd if=/dev/zero of=/dev/block/mmcblk0p14"
adb shell su -c "dd if=/dev/zero of=/dev/block/mmcblk0p15"
adb shell su -c "dd if=/dev/zero of=/dev/block/mmcblk0p9"

concepttheman · 03-17-2016, 02:51

Isn't it 20 2 and 14? Fsg modemst1 and 2?

concepttheman · 03-17-2016, 02:56

My bad you were right I was looking at it wrong

sajid zarif · 12-25-2017, 14:49

please share cert i need this cert E700f duos

Mofadal_eMMC · 12-31-2017, 14:49

try
adb shell su -c "dd if=/dev/zero of=/dev/block/mmcblk0p14"
adb shell su -c "dd if=/dev/zero of=/dev/block/mmcblk0p15"

DYNET · 01-02-2018, 07:53

adb shell su -c "dd if=/dev/zero of=/dev/block/mmcblk0p14"
adb shell su -c "dd if=/dev/zero of=/dev/block/mmcblk0p15"
adb shell su -c "dd if=/dev/zero of=/dev/block/mmcblk0p9"

02-25-2016, 12:55	#2 (permalink)
adhitya_1978 Junior Member Join Date: Mar 2011 Posts: 34 Member: 1535147 Status: Offline Thanks Meter: 7	If that's certificate of imei. so mean you already know where is block the certificate will be store.

02-25-2016, 13:10	#4 (permalink)
iMoG Freak Poster Join Date: May 2011 Location: United Kingdom Posts: 203 Member: 1574069 Status: Offline Thanks Meter: 32	Root with CF-Auto root and flash recovery.img from original firmware again, then wipe cache from recovery and proceed.

02-26-2016, 10:27	#6 (permalink)
stanner_austin No Life Poster Join Date: Jan 2004 Location: Unknown Age: 39 Posts: 9,227 Member: 49752 Status: Offline Sonork: QQ:1474246528 Thanks Meter: 6,085	@zishhaider Hello If software say msl bypass error that's not mean its MSL error. New samsung firmware rejecting MSL authorization if warranty is void. i posted this many month go. You do not need reset efs on most qualcomm just to write cert or unlock. but on security corruption such as null imei or reboot after boot complete need to reset security.. 2 solution for such phone. 1 try your luck downgrade baseband and write cert if ur lucky it will accept even if its show null then update baseband back. 2 find samsung combination flash which use for testing internal stuff which ignore all security check made by baseband.

02-26-2016, 22:31	#8 (permalink)
genhack23 Freak Poster Join Date: May 2014 Location: Anywhere Posts: 267 Member: 2182001 Status: Offline Thanks Meter: 52	The easy ways now is restore emmc (emmc direct)... write boot partiton and rom1(blank efs) after u can write easy u cert...

03-03-2016, 15:37	#9 (permalink)
loniryan Freak Poster Join Date: Oct 2014 Location: efs Age: 33 Posts: 496 Member: 2279944 Status: Offline Sonork: not avaliable Thanks Meter: 167	delete efs folder..under system forlder with root and file explorer

03-03-2016, 16:07	#10 (permalink)
dicle_gsm No Life Poster Join Date: Jul 2007 Location: tr Posts: 2,219 Member: 539148 Status: Offline Thanks Meter: 2,174	adb shell su -c "dd if=/dev/zero of=/dev/block/mmcblk0p14" adb shell su -c "dd if=/dev/zero of=/dev/block/mmcblk0p15" adb shell su -c "dd if=/dev/zero of=/dev/block/mmcblk0p9"

03-17-2016, 02:51	#11 (permalink)
concepttheman Freak Poster Join Date: Aug 2011 Location: New York City Posts: 418 Member: 1637281 Status: Offline Sonork: 100.1657188 Thanks Meter: 95	Isn't it 20 2 and 14? Fsg modemst1 and 2?

03-17-2016, 02:56	#12 (permalink)
concepttheman Freak Poster Join Date: Aug 2011 Location: New York City Posts: 418 Member: 1637281 Status: Offline Sonork: 100.1657188 Thanks Meter: 95	My bad you were right I was looking at it wrong

12-25-2017, 14:49	#13 (permalink)
sajid zarif Junior Member Join Date: May 2010 Posts: 7 Member: 1301872 Status: Offline Thanks Meter: 0	please share cert i need this cert E700f duos

12-31-2017, 14:49	#14 (permalink)
Mofadal_eMMC Junior Member Join Date: Oct 2017 Location: Egypt Age: 28 Posts: 10 Member: 2764515 Status: Offline Thanks Meter: 2	try adb shell su -c "dd if=/dev/zero of=/dev/block/mmcblk0p14" adb shell su -c "dd if=/dev/zero of=/dev/block/mmcblk0p15"

01-02-2018, 07:53	#15 (permalink)
DYNET No Life Poster Join Date: Jul 2006 Location: CHINA Age: 34 Posts: 2,735 Member: 320363 Status: Offline Sonork: 100.1578853 Thanks Meter: 3,938	adb shell su -c "dd if=/dev/zero of=/dev/block/mmcblk0p14" adb shell su -c "dd if=/dev/zero of=/dev/block/mmcblk0p15" adb shell su -c "dd if=/dev/zero of=/dev/block/mmcblk0p9"