[GUIDE] Converting s7 single sim to dual sim with new security b3

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acc12

Member
Aug 26, 2016
12
0
could someone lead me to a service provider who can edit/copy/paste the imei for me? apparently the 3 day license of the chimera tool does not exist anymore and I dont want to pay a full years fee for just 1 time use
 

acc12

Member
Aug 26, 2016
12
0
so, i got a little further with the help of a member here, but unfortunately the dual sim functionality can only be used when being in rooted mode. is there no way to keep the functionality in non-rooted state?
 

Mr Creosote

Senior Member
Nov 25, 2013
191
26
Has anyone else who's done this also bought a dual sim tray? I just got a G930FD (S7 Duos) SIM tray from ebay to put in my G930F. It fits into the slot fine, but one side of it isn't quite flush, it sticks out by a fraction of a millimetre. I'm just wondering is this par for the course and the G930FD is not quite the same shape as the G930F? Or should it fit just as well as the original tray does?
 

sintoo

Senior Member
Nov 26, 2009
183
15
Hi all. Can I use this method for my stock SM-G935W8, Android 8.0, Baseband: G935W8VLS7CTB2 ?
I know how to install TWRP via ODIN. Does anybody have the necessary files for G935W8 on OREO (Android8.0) ? THANK YOU FOR YOUR HELP.
 

Mr Creosote

Senior Member
Nov 25, 2013
191
26
Is this still possible with the most recent baseband/bootloader updates? The last stock firmware I flashed to my phone was a 2020 BTU firmware, my baseband is G930FXXS8ETC1
Is it just a matter of finding the correct combination file which matches the S8 code in the baseband?
 

chapaswork

New member
Apr 13, 2018
3
0
I have a G930F with ALEXNDRG930FXXS7ESL3, which should be binary level "S7". I could convert it to dual sim by:

-Making a full backup with TWRP
-Flashing COMBINATION_FA60_G930FXXU5ASD2_CL7964511_QB23332972_REV00_user_mid_noship.tar.md5
-Booting into the above firmware
-Once inside the fancy menu of this firmware, I rooted with Kingoroot (sometimes the progress meter doesn't show 100%, but it is rooted anyway)
-Use X3C 29.5 to read the cert
-Modify it like this thread says for sim2
-Write it back
-Reboot and go back into the firmware
-Root again
-Use X3C 29.5 to change SIM to Dual Sim
-Reboot in download mode
-Flash an official firmware, preferably the same binary level as the one you had before
-Restore your backup except the EFS, which contains the necessary modifications
Done!
 

Purya.Sadin

Member
Apr 7, 2017
15
6
24
Istanbul
I have a G930F with ALEXNDRG930FXXS7ESL3, which should be binary level "S7". I could convert it to dual sim by:

-Making a full backup with TWRP
-Flashing COMBINATION_FA60_G930FXXU5ASD2_CL7964511_QB23332972_REV00_user_mid_noship.tar.md5
-Booting into the above firmware
-Once inside the fancy menu of this firmware, I rooted with Kingoroot (sometimes the progress meter doesn't show 100%, but it is rooted anyway)
-Use X3C 29.5 to read the cert
-Modify it like this thread says for sim2
-Write it back
-Reboot and go back into the firmware
-Root again
-Use X3C 29.5 to change SIM to Dual Sim
-Reboot in download mode
-Flash an official firmware, preferably the same binary level as the one you had before
-Restore your backup except the EFS, which contains the necessary modifications
Done!
Can you help me with this?
I got binary 8 and couldn't flash this combination
 

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  • 10
    HEY GUYS
    we know that after 11/9/2018 we can not do patch cert because the new security
    this way can restore original imei in addition to restore the second imei too
    now let us start the steps

    first flash recovery twrp
    enter the phone to recovery
    then choose MOUNT
    and make mount efs
    go back
    then chose ADVANCED
    File Manager
    chose EFS folder
    on the bottom right of the screen mark
    chose delete
    then back and enter to download mode directly
    and flash U3 combination file download from here
    now format it from recovery
    then reboot to system
    we notice message tell us there is error in efs folder and reboot press reboot
    http%3A%2F%2Fuploads.tapatalk-cdn.com%2F20160403%2F7b53b62af68f3e8ed32f5e0f534dc1db.jpg

    the phone will restart and the orginal imei has restored
    now root the phone by kingo root (Temporary root) this root is gone when reboot system
    after root open z3x tool (you can use cracked z3x 29.5) and make backup cert (read cert )
    and we edit the cert that we backed up it tow
    to know how to edit the cert go to this
    open cert file with notepad++
    you see like this :
    ;Z3X Samsung CERT file
    ;Please do not edit this file
    [cert]
    Model=SM-G930F
    SerNo=R5xxxxxxxx
    IMEI=355xxxxxxxxxxxx
    ImeiSign=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
    PubKey=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
    PubKeySign=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
    copy lines from imei to pubkeysign and add after imei number 2 and after imeisign number 2 and PubKey ,PubKeySign to look like this
    ;Z3X Samsung CERT file
    ;Please do not edit this file
    [cert]
    Model=SM-G930F
    SerNo=R5xxxxxxxx
    IMEI=355xxxxxxxxxxxx
    ImeiSign=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
    PubKey=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
    PubKeySign=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
    IMEI2=355xxxxxxxxxxxx
    ImeiSign2=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
    PubKey2=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
    PubKeySign2=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

    HERE VIDEO HOW TO EDIT CERT DOWNLOAD HERE

    after that re write the cert that edited by z3x tool (write cert)
    now flash the phone official rom
    to repair wrong SN (Serial Number):
    Open Root Explorer and grant access to superuser
    Change mount R\W in root
    Open folder root\efs\FactoryApp and find the "serial_no" file
    Open in text editor and change the value with your correct serial number, you can look at behind
    Save the file and make sure the serial_no permission 0644 rw-r--r--.
    Reboot your phone
    and enjoy you get s7 g930F DS WITH LAST SECURITY PATCH
    If you like my work then please buy me coffee
    https://www.paypal.me/FANIONDZ
    2
    Absolutely brilliant!!

    The only part where I got a bit lost was, installing Kingo on theFactory Image. That can be done by downloading the Kingo for PC version, and rooting the phone over USB.
    Be aware that the Kingo software installs a bunch of other crap on your PC that you should uninstall later.
    2
    Has anyone updated (from ota) from stock (having done the dual sim via combination) eg. BTU to the latest Oreo U5/S5 BTU firmware and kept the dual sim status?

    If you converted into dual sim support then you can update your device without issue and can use both sim cards.
    1
    can i get ur number mon frère

    in private message
    1
    Thanx fanion , already DUAL SIM! link for FA_80 possible?
    BTW you don't have to buy DUAL sim tray. I used nails milling machine and it works great!
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