Changing CSC on S8

[bighit101]

Hi @maik005

Looks like you are def the person to ask questions regarding csc flashing, and hope you could help me. So i have T-Mobile USA service and really need wifi on my phones due to service issues. I also would like the international S8 version so I can root (snapdragon doesn't have it). So from what I have read here, all I would need to do is to get the international model and flash the TMO csc for wifi calling to work?

Thank you for your help.

Yes, I am sure.. had some reports from germany.

The 3rd CSC Version is fixed into the phone. Buto OTA works.

The CSC Version under Service Provider Software in Software Information in Setttings says.

AAA/BBB/CCC

where
AAA is the current CSC
BBB is the recommed CSC for your SIM (if this CSC is inside your current Multi-CSC)
CCC is the factory CSC of your phone and can´t be changed

 

[maik005]

Hi @maik005

Looks like you are def the person to ask questions regarding csc flashing, and hope you could help me. So i have T-Mobile USA service and really need wifi on my phones due to service issues. I also would like the international S8 version so I can root (snapdragon doesn't have it). So from what I have read here, all I would need to do is to get the international model and flash the TMO csc for wifi calling to work?

Thank you for your help.

Hi,

sorry to say that but I only know about the International Model (G950F/FD; G955F/FD).
I don´t know if you can simply flash the TMO (Snapdrago) CSC on an international phone.

BUT, as you said that you would like to root anyway have a look at this:
https://xdaforums.com/galaxy-s8/development/utility-flashable-csc-selection-v1-0-0-t3605262

I belive that there you may find help!

 

[danman132x]

You can't do much with these multi csc packages. Not sure why has Samsung locked the *#272 option on certain units as it works flawless on mine and i can choose the desired CSC among the list of 140 csc's. The only options are either to get the foreign sim or change csc through root which would further disable Samsung Pay.

Sent from my ONEPLUS A5000 using Tapatalk

Do you know a good place to get a Russian Sim card? I Googled a bit but nothing I saw really. I'm in the states. I'm not sure the forum rules if I can ask for one on here from someone, maybe a Sim card that's no longer needed, would pay shipping. Looks like that's the only option I have to attempt to change my csc.

 

[Sukhi]

Do you know a good place to get a Russian Sim card? I Googled a bit but nothing I saw really. I'm in the states. I'm not sure the forum rules if I can ask for one on here from someone, maybe a Sim card that's no longer needed, would pay shipping. Looks like that's the only option I have to attempt to change my csc.

https://www.google.co.in/amp/s/www....ion-4G-Cell-Phone-SIM-Cards/29778/bn_11451901

Sent from my SM-G950F using Tapatalk

 

[bighit101]

Hi,

sorry to say that but I only know about the International Model (G950F/FD; G955F/FD).
I don´t know if you can simply flash the TMO (Snapdrago) CSC on an international phone.

BUT, as you said that you would like to root anyway have a look at this:
https://xdaforums.com/galaxy-s8/development/utility-flashable-csc-selection-v1-0-0-t3605262

I belive that there you may find help!

Thanks for the response! Will check out the link you sent.

 

[atir usman butt]

Cool

Sent from my SM-G935F using XDA-Developers Legacy app

 

[zerosource]

Oh, I didmt know that. I don't have one. I have a straight talk Sim, located in the US. So what options do I have to change? I've tried everything to get rid of the EGY csc and nothing has worked so far. Maybe I'm doing something wrong

I'm in the same boat. Have you figured it out?

 

[carlo06]

Hello! Maybe out of topic but if I chance my CSC to a USA one using the *#* method would it allow me to use Bixby?

Thanks!

 

[zerosource]

Hello! Maybe out of topic but if I chance my CSC to a USA one using the *#* method would it allow me to use Bixby?

Thanks!

What CSC did you have?

 

[peachpuff]

Hello! Maybe out of topic but if I chance my CSC to a USA one using the *#* method would it allow me to use Bixby?

Thanks!

Can't do that, if you have a Canadian phone you can only choose Canadian csc's so you'd have to flash American firmware. If you have the international s8 then I can't flash American firmware.

 

[uberNoobZA]

this can be done without root or flashing a new ROM since you already flashed a multi- csc firmware from sammobile.

1. get you phones imei:
go to dialer > dial *#06#
take a note of your imei without the /01 at the end.

2. go to phone dialer > dial *#272*(your phones imei)#

3. choose which csc you need and install it.
your phone will reinstall firmware with the new csc region you choose.

done.

Just done this to my S8 SM-G950F and switched from GLB to XTC csc.

This post was a life saver for me I bought a G950FD off eBay (yeah, I know) as I could not find one in UK. It had Samsung stock multi CSC ROM on it, and CSC was Singapore (SIN/SIN/XSP). In an attempt to get wifi calling working, as also just because I prefer CSC to be same as where I am located, I was about to flash a ROM, until I saw this post. I can confirm that the process works just as described above.

One extra step was that after it had reinstalled FW with new CSC, it came up with a message that an unauthorized attempt was made to initialize the phone, and I must connect to wifi / GSM to authenticate phone. I did this, and continued setup of phone. It DID require me to re-authenticate with same Google account as what was on phone before (which I was planning on doing anyway) and then after that all was as normal.

The phone now shows as XEU/XEU/XSP :good:

Thanks again !!

 

[callumbr1]

This post was a life saver for me I bought a G950FD off eBay (yeah, I know) as I could not find one in UK. It had Samsung stock multi CSC ROM on it, and CSC was Singapore (SIN/SIN/XSP). In an attempt to get wifi calling working, as also just because I prefer CSC to be same as where I am located, I was about to flash a ROM, until I saw this post. I can confirm that the process works just as described above.

One extra step was that after it had reinstalled FW with new CSC, it came up with a message that an unauthorized attempt was made to initialize the phone, and I must connect to wifi / GSM to authenticate phone. I did this, and continued setup of phone. It DID require me to re-authenticate with same Google account as what was on phone before (which I was planning on doing anyway) and then after that all was as normal.

The phone now shows as XEU/XEU/XSP :good:

Thanks again !!

Does voLTE work with XEU also?

 

[uberNoobZA]

Does voLTE work with XEU also?

No idea, sorry

 

[callumbr1]

No idea, sorry

What network you with?

 

[uberNoobZA]

What network you with?

Vodafone. I saw a post somewhere that VoLTE WAS available on Vodafone, in select cities

 

[oplix]

changing CSC is impossible without having a supporting SIM card for the region you want to use.

 

[Monty_786]

Thanks a million

this can be done without root or flashing a new ROM since you already flashed a multi- csc firmware from sammobile.

1. get you phones imei:
go to dialer > dial *#06#
take a note of your imei without the /01 at the end.

2. go to phone dialer > dial *#272*(your phones imei)#

3. choose which csc you need and install it.
your phone will reinstall firmware with the new csc region you choose.

done.

Just done this to my S8 SM-G950F and switched from GLB to XTC csc.

You saved me from selling my s8 brother thanks a million ... This method worked on my singapore singtel s8 like a charm .... I think this should be the first step for changing csc if this doesn't work then one should go for odin

 

[lwid]

this can be done without root or flashing a new ROM since you already flashed a multi- csc firmware from sammobile.

1. get you phones imei:
go to dialer > dial *#06#
take a note of your imei without the /01 at the end.

2. go to phone dialer > dial *#272*(your phones imei)#

3. choose which csc you need and install it.
your phone will reinstall firmware with the new csc region you choose.

done.

Just done this to my S8 SM-G950F and switched from GLB to XTC csc.

This isn't working on my SM-G950FD, currently on XEU/XEU/ECT
I've tried with both IMEI's on my phone, but nothing happens. If I try to dial after entering the last #, I get Invalid USSD code error message.

Does this also factory reset the phone?

 

[cluboxx]

how to access in in Factory Imei input? thanks

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_QB13087097_REV00_user_mid_noship.tar
COMBINATION_FA70_G950FDXU1AQD1_CL11075180_QB13087097_REV00_user_mid_noship.tar

 

[Michaelandhistab]

It's strange, when I tried to use the *#272*imei# code it said "connection problem or invalid mmi code". I got curious and put my girlfriend's SIM from a different network in my phone, this time it said "Sorry, you're not entitled to this service".

Is this code dependant on whether or not your telecom provider allows you to do it?