Changing CSC without root

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the_OZONE

Senior Member
May 14, 2016
95
9
Is it possible to change CSC with the end result being unrooted? By this I mean if it requires me to root in order to change CSC that is okay, but then can I unroot while keeping the CSC I changed to? The reason I ask is because I want to be able to use banking and other apps (I've read that root prevents these apps from working) but at the same time I want to have wifi calling and voLTE for my carrier.
 
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cantenna

Senior Member
Aug 5, 2012
2,324
556
Newcastle
Is it possible to change CSC without root? The reason I ask is because I want to be able to use banking and other apps (I've read that root prevents these apps from working) but at the same time I want to have wifi calling and voLTE for my carrier.

Right, without root, all you need to do, visit sammobile and download then flash the compatible image from the carrier you want to switch to. However, be aware, of hardware limitations i.e.) you cannot flash a snapdgragon fw on a exynos phone for example.

Now if you had root on the other hand, you can do this in a matter of mins and not loose any files.
 

the_OZONE

Senior Member
May 14, 2016
95
9
Right, without root, all you need to do, visit sammobile and download then flash the compatible image from the carrier you want to switch to. However, be aware, of hardware limitations i.e.) you cannot flash a snapdgragon fw on a exynos phone for example.

Now if you had root on the other hand, you can do this in a matter of mins and not loose any files.

I wanted to use a CSC that allows AT&T wifi calling and voLTE. This thread https://forum.xda-developers.com/ga...ility-flashable-csc-selection-v1-0-0-t3605264 shows that it is possible to flash USA Multi-CSC using TWRP and root, which includes AT&T. So is it possible to have this CSC on the G955F while being unrooted? If it requires me to root and then unroot in order to change the CSC, I would be okay with that too as long as the CSC stays.

Based on what you said, I'm assuming the answer is no because the AT&T variant is the snapdragon variant, so I'm guessing that means the CSC wouldn't be supported in exynos unless flashed via root and then remaining rooted. Correct?
 
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the_OZONE

Senior Member
May 14, 2016
95
9
if you have Exynos phone you got root as an option

Right, but the problem is that with root I won't have access to banking and other apps. So I was hoping maybe I'd be able to root, flash the CSC, then unroot and find a way to keep the CSC. Basically, on exynos, I want to be able to have the AT&T CSC and banking apps at the same time.
 
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Right, but the problem is that with root I won't have access to banking and other apps. So I was hoping maybe I'd be able to root, flash the CSC, then unroot and find a way to keep the CSC. Basically, on exynos, I want to be able to have the AT&T CSC and banking apps at the same time.
i have the 955FD with an ATT CSC and Wifi calling isn't working and i can't visually tell if VoLTE is working. next step is to get an ATT imei assigned to my number to see if that fixes it. bottom line, changing to ATT CSC is not guaranteed to get the aforementioned services working on your 955F.
 
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ngominh

New member
May 16, 2017
3
7
Hello !
You can change CSC for S8/S8+

1. Download combination rom for your S8/S8+
2. Download S8/S8+ rom with 4 file
3. Open Odin and Flash with combination ROM (AP) + CSC (rom file HOME_CSC.........) (*don't use CSC_................)
4. Wait for phone boot up, in Factory Imei input *#243203855#, anh chose you need csc --> install, phone will reset.......
5. Now Flash your phone with your coutry rom.
Done !
p/s: I buy S8+ in cambodia with CAM csc, use this method successful change to XXV csc.

Seach with Google:
COMBINATION_FA70_G955FDXU1AQD1_CL11075180_QB130870 97_REV00_user_mid_noship.tar
COMBINATION_FA70_G950FDXU1AQD1_CL11075180_QB130870 97_REV00_user_mid_noship.tar
 

cool_head

Senior Member
Jun 14, 2007
99
45
Sintra
Hello !
You can change CSC for S8/S8+

1. Download combination rom for your S8/S8+
2. Download S8/S8+ rom with 4 file
3. Open Odin and Flash with combination ROM (AP) + CSC (rom file HOME_CSC.........) (*don't use CSC_................)
4. Wait for phone boot up, in Factory Imei input *#243203855#, anh chose you need csc --> install, phone will reset.......
5. Now Flash your phone with your coutry rom.
Done !
p/s: I buy S8+ in cambodia with CAM csc, use this method successful change to XXV csc.

Seach with Google:
COMBINATION_FA70_G955FDXU1AQD1_CL11075180_QB130870 97_REV00_user_mid_noship.tar
COMBINATION_FA70_G950FDXU1AQD1_CL11075180_QB130870 97_REV00_user_mid_noship.tar

What do you mean with "Factory Imei"? It's a menu or something? In phone dialer that code doesn't work...
 

deltacharlie

Senior Member
Jul 25, 2007
56
4
Mumbai
Same question here what does "Factory Imei"? It's a menu or something?

Also in step 3 assuming you have to put the CSC of the new CSC area you want. Also usually you flash CSC and not HOME_CSC. In this case it is reverse, any reason why ?
 

tanipat

Senior Member
Nov 22, 2011
341
103
i have same objective as yours, i have SM-G9550 which is hongkong variant (non-root) and it is snap with 6gb pf ram and 128gb of rom. I want to change CSC to Thailand (THL) to use VOLTE and VOWIFI. But problem is Thai variant is EXYNOS paired with 4gb of ram and 64gb of rom. So is there anyway to work this without root as i need to use Knox and samsung pay so root will deatroy it correct?
 

henklbr

Senior Member
Feb 20, 2009
6,126
6,749
Netherlands
www.sammobile.com
Hello !
You can change CSC for S8/S8+

1. Download combination rom for your S8/S8+
2. Download S8/S8+ rom with 4 file
3. Open Odin and Flash with combination ROM (AP) + CSC (rom file HOME_CSC.........) (*don't use CSC_................)
4. Wait for phone boot up, in Factory Imei input *#243203855#, anh chose you need csc --> install, phone will reset.......
5. Now Flash your phone with your coutry rom.
Done !
p/s: I buy S8+ in cambodia with CAM csc, use this method successful change to XXV csc.

Seach with Google:
COMBINATION_FA70_G955FDXU1AQD1_CL11075180_QB130870 97_REV00_user_mid_noship.tar
COMBINATION_FA70_G950FDXU1AQD1_CL11075180_QB130870 97_REV00_user_mid_noship.tar

Don't talk RUBBISH!!!

This is NOT possible without root!
 

Cyclops1055

Senior Member
Oct 19, 2011
481
147
Mississauga
You could try from the phone dialer: *#243203855# that's to change CSC, keep in mind it will reset your phone so make a backup first. The screenshot shows CSC for Canada since I'm in Canada.
1496691462296.jpg

Sent from my SM-G955W using XDA-Developers Legacy app
 
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samteeee

Senior Member
Is it possible to change CSC with the end result being unrooted? By this I mean if it requires me to root in order to change CSC that is okay, but then can I unroot while keeping the CSC I changed to? The reason I ask is because I want to be able to use banking and other apps (I've read that root prevents these apps from working) but at the same time I want to have wifi calling and voLTE for my carrier.


You can change the CSC region successfully using @ngominh's method.
But you have to find "The Combination" file for your phone to do it and that
is usually a "Paid" firmware which is different than your normal stock firmware!
You find that and you can change the CSC successfully!
 

yash92duster

Senior Member
Jan 31, 2015
13,139
15,852
Chennai
To change csc if you are on multi firmware

Type *#272*IMEI#

It will show list of available csc

Then choose the csc you want

It will factory reset device


Back up all files and try
 

yash92duster

Senior Member
Jan 31, 2015
13,139
15,852
Chennai
I'm on multi csc but this code does nothing on my Exynos S8+.

Type *#272*IMEI#

in IMEI type your imei code 12445765xxxxxx934934

it works fine for me

it will show a list and after selecting any csc it will factory reset

i tried and only gave a way to change csc
:rolleyes:

you try again
i dont know what you typed
 

samcex

Senior Member
May 19, 2015
94
28
Type *#272*IMEI#

in IMEI type your imei code 12445765xxxxxx934934

it works fine for me

it will show a list and after selecting any csc it will factory reset

i tried and only gave a way to change csc
:rolleyes:

you try again
i dont know what you typed
First of all how can I confirm I'm on multi csc, would you help me troubleshoot this ?
 

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  • 4
    Hello !
    You can change CSC for S8/S8+

    1. Download combination rom for your S8/S8+
    2. Download S8/S8+ rom with 4 file
    3. Open Odin and Flash with combination ROM (AP) + CSC (rom file HOME_CSC.........) (*don't use CSC_................)
    4. Wait for phone boot up, in Factory Imei input *#243203855#, anh chose you need csc --> install, phone will reset.......
    5. Now Flash your phone with your coutry rom.
    Done !
    p/s: I buy S8+ in cambodia with CAM csc, use this method successful change to XXV csc.

    Seach with Google:
    COMBINATION_FA70_G955FDXU1AQD1_CL11075180_QB130870 97_REV00_user_mid_noship.tar
    COMBINATION_FA70_G950FDXU1AQD1_CL11075180_QB130870 97_REV00_user_mid_noship.tar
    2
    Is it possible to change CSC without root? The reason I ask is because I want to be able to use banking and other apps (I've read that root prevents these apps from working) but at the same time I want to have wifi calling and voLTE for my carrier.

    Right, without root, all you need to do, visit sammobile and download then flash the compatible image from the carrier you want to switch to. However, be aware, of hardware limitations i.e.) you cannot flash a snapdgragon fw on a exynos phone for example.

    Now if you had root on the other hand, you can do this in a matter of mins and not loose any files.
    1
    Right, but the problem is that with root I won't have access to banking and other apps. So I was hoping maybe I'd be able to root, flash the CSC, then unroot and find a way to keep the CSC. Basically, on exynos, I want to be able to have the AT&T CSC and banking apps at the same time.
    i have the 955FD with an ATT CSC and Wifi calling isn't working and i can't visually tell if VoLTE is working. next step is to get an ATT imei assigned to my number to see if that fixes it. bottom line, changing to ATT CSC is not guaranteed to get the aforementioned services working on your 955F.
    1
    You could try from the phone dialer: *#243203855# that's to change CSC, keep in mind it will reset your phone so make a backup first. The screenshot shows CSC for Canada since I'm in Canada.
    1496691462296.jpg

    Sent from my SM-G955W using XDA-Developers Legacy app
    1
    if the code i told works
    it will show multi csc options

    if it doesn't work then you're not on multi csc rom
    ;)
    I changed my csc, I had an sim card from the country I wanted to switch and I inserted it in my s8+ then Factory reset and now it is on the CSC I wan't.

    Thank you anyway.