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

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dastane

Senior Member
Mar 3, 2013
297
98
58
Algiers
hello,
i have g930f using Hyper rom V5
after tyring to flash the combination file i get bootloader exception....
many hours of searching, i get the solution, i flashed i new stock firmware u3 , get erasing => flash twrp => back up of my rom
the phone turn on but i get some problemes like:
- imei : 000000000000000
- can not use my sim card...

so anysolution plz??
i found the u4 combination file, i don't know if i must flash it or not, if i do that my imei will be restored??
يا خو والله راني حاصل
 

MysteriousStranger

Senior Member
Aug 11, 2014
93
14
28
working like a treat! Many thanks mate! I just modified my single SIM tray using a razor blade to make room for the second SIM.

can you provide pictures of the sim tray modification please??
Also in youtube I saw that someone has used both Sims and an SD card, could this be even possible??
Also, does this procedure works on oreo Lightrom?
 

dastane

Senior Member
Mar 3, 2013
297
98
58
Algiers
hello,
i have g930f using Hyper rom V5
after tyring to flash the combination file i get bootloader exception....
many hours of searching, i get the solution, i flashed i new stock firmware u3 , get erasing => flash twrp => back up of my rom
the phone turn on but i get some problemes like:
- imei : 000000000000000
- can not use my sim card...

so anysolution plz??
i found the u4 combination file, i don't know if i must flash it or not, if i do that my imei will be restored??


no one can help?? plz
 

tester2

Senior Member
Dec 1, 2006
127
12
38
I'm on U3 stock ROM, never modified.
It is not clear for me: can I just use Z3X and clone IMEI to SIM2 on my vanilla stock ROM + TWRP?
OR I must pre-flash U3 combination ROM from first post, then make all TWRP magic, and then clone SIM and lastly flash stock ROM again?
 

fanion

Senior Member
Jan 3, 2013
554
251
93
DJAMAA
I'm on U3 stock ROM, never modified.
It is not clear for me: can I just use Z3X and clone IMEI to SIM2 on my vanilla stock ROM + TWRP?
OR I must pre-flash U3 combination ROM from first post, then make all TWRP magic, and then clone SIM and lastly flash stock ROM again?

You must flash combination rom
 
Jun 3, 2019
16
0
0
Stock ROM Support for Dual SIM?

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
now format it from recovery
then reboot to system
we notice message tell us there is error in efs folder and reboot press reboot
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

copy lines from imei to pubkeysign and add after imei number 2 and after imeisign number 2 and PubKey ,PubKeySign to look like this

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

Hello stock rom support to dual SIM? we must need to use custom rom as my idea. it's not correct?
 

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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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