yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S24 Ultra] JackFrost6:
Hi everyone, can you help me clarify the issue of changing the CSC region?

I found a problem that I can't find information about.

I have the original s24U from EU, so my phone is originally EUX.

I wanted to record calls, so I took the phone after purchase, booted up for the first time, connected to wi-fi and changed the CSC region to THL. Everything worked, but I found information that my friend didn't write down. That I may have a problem in the future when claiming the warranty at Samsung. I did the first update of the phone in the THL region. This is important!

I have returned the phone to EUX thanks to my concerns. I only use samFW and only a simple switch of the CSC region.

I have not received the last OTA update S928BXXS3AXFE/S928BOXM3AXFE/S928BXXS3AXFE. I still have the phone after the release with the second build S2. I have investigated where the problem might be. Here we come to interesting information.

Neither manual search for the update helps, nor the Smart Switch application on the computer allows you to get the update.

The phone still carries the information in the Last Update section, tap the link as a link for more information.

doc samsungmobile com / SM-s928 / THL/doc html

As soon as I returned the phone to CSC THL, the S3 build update arrived immediately.

What does it say?

If the phone receives the first update in the OTA region, only future updates will work there and it is not possible to change it just by switching CSC back to its original country.

This is a warning!

I think that if my phone accepted the first update in the original EUX, it would accept all other updates only in EUX.

What are my options to fix this?

The only thing I have found that might help is to go back to the original CSC EUX, upload the update manually only.

But nowhere did I get information that this works.

The other option, which I don't really want to do, is just to reload the original EUX firmware.

Since this works for me, if CSC THL doesn't damage my phone, I stay in THL, I don't want to keep switching.

Thank you if someone here can explain and write about the problems with CSC.
[Samsung Galaxy S24 Ultra] ChoSmile:
This is table of firwares release officialy for EUX, THL, XXV, INS, ILO for current day (21 July 2024)

EUX	THL	XXV	INS	ILO
S928BXXS3AXFE
S928BXXS3AXFD
S928BXXS3AXFC
S928BXXS2AXEF
S928BXXS2AXEE
S928BXXS2AXED	S928BXXS2AXED	S928BXXS2AXED
S928BXXU2AXEC
S928BXXU2AXE4
S928BXXS2AXD6
S928BXXS2AXD5	S928BXXS2AXD5	S928BXXS2AXD5	S928BXXS2AXD5
S928BXXU1AXCB
S928BXXU1AXCA	S928BXXU1AXCA	S928BXXU1AXCA	S928BXXU1AXCA	S928BXXU1AXCA
S928BXXS1AXBN	S928BXXS1AXBN	S928BXXS1AXBN	S928BXXS1AXBN
S928BXXS1AXBG
S928BXXU1AXBA	S928BXXU1AXBA	S928BXXU1AXBA	S928BXXU1AXBA
S928BXXU1AXB5
S928BXXU1AWM9	S928BXXU1AWM9	S928BXXU1AWM9	S928BXXU1AWM9	S928BXXU1AWM9

Firmware version letters/digits meaning:

Model S92 (8 Ultra, 6 Plus, 1 standard)

B - Europe/Asia, U/U1 - US, W - Canada, N - South Koreal, 0 - China/HK/Taiwan

XX - doesn't matter, simply non specific network pre-issued

1/2/3 - bootloader version - can flash via ODIN same or upper firmware version

A/B/C... - OS/UI versions, start from A for every model, A is for Andorid 14 UI 6.1, B will be for UI 6.1.1 (for this phone only), C will be fror Android 15 UI 7.0 (maybe), ALSO "Z" is for BETA firmwares

W - year 2023, X - 2024, Y - 2025

A...L - month A - January ... L December, and special M - month 13 pre-release

Last one is month release version from 1...9,A...Z - there are many internal releases, after pass tests - some of them become public (table).

At the beginnig all was WM9, also XCA was last version same for all (CSC) of them.

OTA - On The Air Update have ONLY DIFFERENCES between current and newer firmware.

So, if you was on EUX CSC and XCA firmware - and change CSC to THL - phone can receive firmware only from THL channel (colomn) up to XFD

Example: If somene change frrom EUX to THL for example then it was on XD6 - it will stuck on it. So, no OTA. It na change to EUX again and will receive OTAs up to XFE.

Same with all channels/colomns, like you on THL.

Warranty depends only from KNOX - CSC change not trip KNOX - so phone warranty is not voided!

To FIX OTA updates you must flash with ODIN with firmware from desired CSC channel/colomn.

Remeber - can not flash with lower bootloader.

Flashing with ODIN wiht AP, BL, CP and CSC files - will finish flash with factory reset.

Flashing with ODIN wiht AP, BL, CP and HOME_CSC files - will NOT wipe/reset anything - it is like UPDATE but with full files.

So it you like to go on EUX - flash with ODIN (BL,CP,AP,HOME_CSC files from XFE EUX files) and change CSC with samfw to EUX too.

All flashes with ODIN are with ORIGINAL Samsung firmwares, so they not trip KNOX and warranty is OK.

BTW THL (XE4, XEE and XFD) have "problem" with Google Play certification - so, Google Pay not working. (check with YASNAC "Fail" of CTS)
[Samsung Galaxy S24 Ultra] Kuldeep1412:
CSC - DKR belongs to which country
[Samsung Galaxy S24 Ultra] ChoSmile:
DKR is Senegal same fw versions like XXV, INS and ILO
[Samsung Galaxy S24 Ultra] TODI1111:
Nice summary. Thank you.
[Samsung Galaxy S24 Ultra] Kuldeep1412:
i change csc DKR TO INS will i get ota update
[Samsung Galaxy S24 Ultra] mcbyte_it:
I bought an S24 Ultra, came with STH csc code (Singapore) and the seller told me it doesn't support eSim and no Call recording. but I saved 25% than buying a local import device with everything enabled.

In 10 minutes after arriving home I had already changed the CSC to ILO and now eSim and call recording are all enabled now.

Many Thanks to the SamFW tool
[Samsung Galaxy S24 Ultra] ChoSmile:
Yes
[Samsung Galaxy S24 Ultra] Kuldeep1412:
i change it through samfw mtp still i get
[Samsung Galaxy S24 Ultra] ChoSmile:
I do not understand you.

What is "mtp"?

Do you ask something?
[Samsung Galaxy S24 Ultra] Kuldeep1412:
i change it through samfw mtp

through this mode from samfw
[Samsung Galaxy S24 Ultra] ChoSmile:
Ok
[Samsung Galaxy S24 Ultra] Kuldeep1412:
will i get updates?
[Samsung Galaxy S24 Ultra] ChoSmile:
I already answered you :)
[Samsung Galaxy S24 Ultra] Kuldeep1412:
thanks
[Samsung Galaxy S24 Ultra] Kuldeep1412:
if flash with odin ins csc can recive ota updates
[Samsung Galaxy S24 Ultra] Jeroen1000:
Anyone tested sek csc lately? I believe I read caller id/spam protection works with it now. Can't find my source anymore though.
[Samsung Galaxy S24 Ultra] ChoSmile:
SEK adds callerID/spam in Android 14 firmwares.

BUT Samsung does not release/include SEK CSC in S24 series firmwares, so can not switch/change to it. Generally models are not released for Ukraine.
[Samsung Galaxy S24 Ultra] x7nofate:
Do you have native phone recorder? Do everything else work correctly? Samsung pay, samsung health, updates do you notice any signal issue? I am playing to change to INS
[Samsung Galaxy S24 Ultra] ErwinOnline:
I just received my S24 Ultra. I enabled Developer mode and USB debugging from the developer mode menu. I used the free "SamFw Tool" to change the CSC from EUX to INS. Took no more than 2 minutes.

After my phone was restarted I have the native Call Recording option in the phone app.

Last year I did the same for my S23 Ultra and was able to use call recording, caller id/spam protection and I was able to use Google Pay. Not sure about Samsung Pay or Samsung health, I haven't used that.

Good Luck anyone.
[Samsung Galaxy S24 Ultra] dim4x4:
Hello! Could you please tell me where I can find a list of all available CSCs to choose from and download the one I need? I have an S24 Ultra from the UK, and I want Samsung Pay to work in Cyprus (with Cyprus banks/cards).
[Samsung Galaxy S24 Ultra] HellStorm666:
Is there any disadvantage of changing the CSC to ILO (from EUX)?
[Samsung Galaxy S24 Ultra] x7nofate:
Try to change CSC to INS (India). It was working fine on s23 and on mine note 9. All google pay, samsung pay, updates all were working fine. If you change it come back end let people know results
[Samsung Galaxy S24 Ultra] inthedark22:
The updates maybe sooner or later by a few days.
[Samsung Galaxy S24 Ultra] x7nofate:
Depends of the Network provider and frequency which current network uses. You might experience lower or higher network reception signal/mobile Speed. You might experience these issue you might not.
[Samsung Galaxy S24 Ultra] dim4x4:
Changed CSC from EUX to INS (India). Google Pay accepted my Cyprus card. Samsung Pay did not.
[Samsung Galaxy S24 Ultra] x7nofate:
Samsung pay did not accept your card probably because your bank does not support Samsung pay
[Samsung Galaxy S24 Ultra] jcgure:
Yes its ok i did it just now.
[Samsung Galaxy S24 Ultra] Rapier:
All restrictions that were on S23 will apply to S24 also (for ex Samsung Pay not working on THL). Changing CSC from EUX to THL works

None except the different update times (but you could always flash an EUX or OXM multi-CSC firmware with Odin). I did it for my S23U and now on my S24U without issues
[Samsung Galaxy S24 Ultra] renek11:
Thanks for the confirmation, I have already made the change from EUX to THL and everything seems to be working. Hopefully everything will be smooth including the OTA
[Samsung Galaxy S24 Ultra] behemot24:
any idea which CSC codes have both call recording and samsung pay? 👀
[Samsung Galaxy S24 Ultra] Germossam:
FYI, when I changed my CSC on my old S20 FE to India to enable call recording, my Samsung Pay was working BUT it only allowed me to add Indian cards which I obviously didn't have.

And after looking around at the time I learned that SPay region is tied to the CSC NOT your device's or Samsung account's region, which is honestly incredibly stupid.

Things might have changed now so YMMV.
[Samsung Galaxy S24 Ultra] behemot24:
Thanks! I'll give Indian code a try.

I've just found someone posted this info on the S23U forum, so it seems fine:

"

I can CONFIRM for "B" region devices (Europe, Asia, Midde East, ...)

S24 (SM-S921B)

S24+ (SM-S926B)

S24 Ultra (SM-S928B)

CALL RECORDING WORKS !

CSC change is still working with SamFw. (no data loss)

CSCs with call recording: INS, THL, XXV, ILO, SEK, maybe others but also.

INS - CallRec, CallID, SPay

XXV - CallRec, SPay

THL - CallRec, CallID

SEK - Sorry, did not check personaly, there is no SEK in S24/+/U devices.

ILO - CallRec, CallID, SHM

(CSC changes are not limited)"
[Samsung Galaxy S24 Ultra] Germossam:
I suggest checking here

List of LTE networks - Wikipedia

en.wikipedia.org

And picking a region out of those that you listed that best match the bands in your current region.

Good Luck Bud!
[Samsung Galaxy S24 Ultra] sovi3tss:
Strange, no SEK that's the one that I used when I had my S23U. I guess i will have to try THL. currently residing in Australia
[Samsung Galaxy S24 Ultra] JasonXoxo:
yes, able to record calls. Samsung Pay becomes unavailable afterwards
[Samsung Galaxy S24 Ultra] Noor Ahmed 713:
Does changing CSC work on exynos devices ?
[Samsung Galaxy S24 Ultra] aureldoku:
im quite new to the game of changing csc.

could somone please explain to a noop like me how i pick the right csc suitable for me.

i dont have my s24u by now but since i'm in germany i think it will be EUX i will get.

call recording would be great for me but are there any other csc that will unlock any other cool feature without loosing anything i will need to run this phone on german telekom Network?

in summary, i just want to maximize what i can squeeze out of this phone without loosing the ability to have OTA updates for example.
[Samsung Galaxy S24 Ultra] behemot24:
Samsung pay still working for me. Some CSCs don't have it but "INS" does.
[Samsung Galaxy S24 Ultra] nguyenlucky:
SEK is Ukraine. Samsung might have pulled out, for obvious reasons

XXV also has lunar calendar on lock screen, for those who care about it.
[Samsung Galaxy S24 Ultra] gpap2004:
Successfull change of CSC , from EUR to ILO (I had ILO changed to my previous S23 ultra , too) , in 1 minute, with samFW tool for windows. S24 ultra. Everything works well, call recording , spam blocking, Google Wallet, ECG and Blood Pressure monitor on galaxy watch 6, VoLTE and WiFi calling. No signal issues. ILO gives quick updates, shortly after EUR updates are available.

No Samsung Pay for ILO (INS have it) , but it is not useful for me as there is not supported from bank in my country. Firmware: January, AWM9
[Samsung Galaxy S24 Ultra] Vadim1:
Does anyone know whether it is possible to install the OXM CSC of SM-S928B on a SM-S928W (Canada) for Call Recording purposes ?

Thanks
[Samsung Galaxy S24 Ultra] gpap2004:
Taking into account the previous models and similar questions, I think it is impossible
[Samsung Galaxy S24 Ultra] uicnren:
any of this possible on SM-S928U1 w/CSC - XAA ?
[Samsung Galaxy S24 Ultra] Vadim1:
Thanks.

Does it mean the only options would be either SM-S928B or SM-928N ?

Currently using the S22 Ultra (Korean version) but would not mind getting something else as long as I could get the native Call Recording feature.

Any idea as to whether the SM-S9280 (DS) might have it ?

Thanks
[Samsung Galaxy S24 Ultra] ankit3sharma:
Hi,

I am new here and apologies for being naive. Till date have been using device from Samsung (IN Version) with native call recording.

I just received my S24U in Canada with Software Version as - SM-S928W_OYV_FMC_14_0014....

I read that the CSC may be changed only on Firmware that have multiple CSC. Does this mean that I would need to flash OXM firmware and cannot just update the CSC on the current firmware?

Also, would flashing the OXM firmware void warranty or trip Knox?

I would really appreciate if someone could shed some light on this.

Thanks!
[Samsung Galaxy S24 Ultra] PFusion:
Will this work on U.S Galaxy S24 Ultra unlocked version?
[Samsung Galaxy S24 Ultra] sthuv:
Hello, this thread is super interesting. Which CSC do you recommend for France please ? Is ILO recommended ?

Thanks
[Samsung Galaxy S24 Ultra] x7nofate:
Go for INS
[Samsung Galaxy S24 Ultra] x7nofate:
Since s24 ultra has got the same CPU globally it should work, before you attempt change CSC app should give you list of available csc modems. Worst case scenario you can always go back to your original.
[Samsung Galaxy S24 Ultra] gpap2004:
ILO definitely. For s24 ultra snapdragon
[Samsung Galaxy S24 Ultra] x7nofate:
Not really, people reports Samsung pay does not work with ILO. INS is better
[Samsung Galaxy S24 Ultra] gpap2004:
It depends in what region you live. In Greece, France, Italy etc , Samsung Pay doesn't support by banks so it is useless to use INS.

ILO for snapdragon s24 ultra is more near to European level
[Samsung Galaxy S24 Ultra] PFusion:
Was this the U.E version?
[Samsung Galaxy S24 Ultra] sthuv:
Thank you for your answers. And indeed, as someone points out in this thread, we can return to the original CSC in the worst case.
[Samsung Galaxy S24 Ultra] gpap2004:
Not any.
[Samsung Galaxy S24 Ultra] gpap2004:
Yes
[Samsung Galaxy S24 Ultra] gpap2004:
You don't lose OTA updates. You can receive ota updates normally, for the region you changing your csc. For example, if you change to ILO as me , you receive updates when ILO do. No void warranty
[Samsung Galaxy S24 Ultra] gpap2004:
INS have it. But, Samsung Pay is currently available for Indian cards only. So , if you live in region other than India , SPay does not work
[Samsung Galaxy S24 Ultra] lufee84:
Oh that is no good, was using Samsung Pay mostly, is there limit to how many CC you can add to GPay?

Samsung Pay only allows 10.
[Samsung Galaxy S24 Ultra] venki5star:
Not sure if this is true. I have XSA (Australia) Samsung Pay with Indian credit cards linked.
[Samsung Galaxy S24 Ultra] PFusion:
Did any work for U.S veriants?
[Samsung Galaxy S24 Ultra] StormCell:
I want to know the same thing. Will this work on U. S. phones, which CSC should I use and how do I do it? Appreciate the help!
[Samsung Galaxy S24 Ultra] aureldoku:
I'm still wondering how to pick a specific csc over an other?

isn't there kind of an "all features enabled" csc?
[Samsung Galaxy S24 Ultra] Rapier:
Depends on where you live (your model and original CSC) and what features do you want. I choose switching to ILO for ex and I have everything except Samsung Pay that doesn't work in my country anyways.
[Samsung Galaxy S24 Ultra] x7nofate:
I did know about this
[Samsung Galaxy S24 Ultra] nguyenlucky:
S928N has call recording, but isn't comaptible with global CSCs. Also Samfw CSC change doesn't work with Korean devices I think. Also 5G bands are very limited (only n78 I think)

S9280 Chinese firmware has call recording but no Google; HK and Taiwan has Google but no call recording.

Just stick with S928B/DS. Call recording with certain CSCs, dual physical SIM, dual eSIM, global bands. This version can be bought virtually everywhere, except US, Canada, Japan, China, HK, TW, and Australia.

Australian version is S928B, same software as S928B/DS but no dual physical sim. Basically single-sim global version that is not sold anywhere else.
[Samsung Galaxy S24 Ultra] Vadim1:
S928N's limited bands would not be a problem.

My S908N has only n78 but I prefer sticking to LTE.

S928B/DS can also be bought in Canada (a few merchants carry this model).

My only worry is related to my provider's reluctance to have no Canadian models' VoLTE enabled on its network. I have to ask them to have my IMEI whitelisted every time and they dislike customers who are not willing to comply with their silly requirements.

I agree with you, S928B/DS looks as the optimal version.
[Samsung Galaxy S24 Ultra] imblfmstr:
Thanks for the info buddy. Just a few questions if you can help with

1. What sis the model number you are using (SM-928XXXX)

2. does it trip the Knox counter ?

3. will the future OTA change the CSC back to original or it remains INS
[Samsung Galaxy S24 Ultra] nguyenlucky:
I just checked, S928N has the same bands as global B/DS version. Big improvement compared to older devices, but still doesn't make sense compared to global version itself.

S928B/DS in Canada and the US is probably imported from a Latin American country.

US and Canada carriers seem like draconians compared to where I live. I can just pop in a SIM card and these features will work.
[Samsung Galaxy S24 Ultra] nguyenlucky:
2. no

3. remains the same
[Samsung Galaxy S24 Ultra] ErwinOnline:
Correct

1 SM-S928B/DS but it should work on other models too

2 No

3 It remains INS, even after a factory reset. Before I returned my S23 Ultra I used "SamFw Tool" to change the CSC back from INS to EUX.
[Samsung Galaxy S24 Ultra] x7nofate:
Incorrect answer. I have Samsung galaxy s24 ultra 1TB in UK with EUX CSC. I changed CSC to INS and Samsung Pay works correctly with UK HSBC debit card. I same configuration I had in my galaxy note 9 and Samsung pay also works with INS CSC
[Samsung Galaxy S24 Ultra] klopeck:
I live in Spain and Samsung Pay works (CSC INS) with BBVA, Orange Bank and others.
[Samsung Galaxy S24 Ultra] Vadim1:
Indeed, some of them are unbearable.

For now, mine tried to resist but eventually had to whitelist my Korean devices.

Just ordered a SM-S928B/DS

Should the carrier play the old game, I will switch.
[Samsung Galaxy S24 Ultra] sovi3tss:
Changed from XSA (Australia) to THL Goole Pay working fine, don't use Sammy Pay call recording is good and CallerID Spamwatch is working fine.
[Samsung Galaxy S24 Ultra] nguyenlucky:
Lol I live in AU but specifically avoid the Aussie version because they disabled the second sim slot compared to my home country (an SEA country).

Aussie version is S928B while international is S928B/DS. Which means it's exactly the same, hardwae and software wise, except for the second sim slot. Even NZ is selling the DS version.
[Samsung Galaxy S24 Ultra] samyak.jain:
Thanks for this information as it is very helpful. Any negative thing/issue you have had after changing CSC from EUX to INS ?
[Samsung Galaxy S24 Ultra] x7nofate:
Nothing so far
[Samsung Galaxy S24 Ultra] sovi3tss:
Why is it that when you change to INS you don't see the call record feature in the dialer ? yet it still records the call, when I was on THL (Thailand) you did see the option to disable the call feature... weird
[Samsung Galaxy S24 Ultra] PFusion:
Has anyone tried this with U.S version?
[Samsung Galaxy S24 Ultra] sovi3tss:
I believe the Samfw software will just throw an error I will not give you the option to select the CSC
[Samsung Galaxy S24 Ultra] renek11:
What about the warranty if I change the CSC in this way and something happens to the phone software-wise? Doesn't this void the warranty?
[Samsung Galaxy S24 Ultra] x7nofate:
No, it doesn't void warranty
[Samsung Galaxy S24 Ultra] renek11:
And do you have any confirmation of that from the service department, or is that just your assumption?
[Samsung Galaxy S24 Ultra] jemcik:
After changing CSC from EUX to ILO (everything is done like in a video) I noticed that Auto download over Wi-Fi option has gone from Software update section in settings.

Is this only me who has this issue or it is okay for ILO region to hide this option?
[Samsung Galaxy S24 Ultra] x7nofate:
I got auto download over the WiFi on INS CSC. Previously I had EUX and also had auto download over WiFi
[Samsung Galaxy S24 Ultra] sasasa671:
When I enter my phone model SM-S926U1 to samfw, there is no csc option that has native call recorder. That is really sad and I want to have it...
[Samsung Galaxy S24 Ultra] sovi3tss:
Well if there is an issue with the software how can they tell if the CSC has been changed until they fix the software side of things, and if its hardware you could always switch it back as I did with the S23 before sending it in for tradeup.
[Samsung Galaxy S24 Ultra] sovi3tss:
Yeah, i feel you its a basta@## that they deny this option
[Samsung Galaxy S24 Ultra] sasasa671:
So this is impossible, that's very sad. That feature saved me a lot of times.. I don't want to 3. Parti apps...
[Samsung Galaxy S24 Ultra] IamST215:
Cube ACR ONLY from the Galaxy Store works just fine if in the U.S.

Sent from SM-S928U using ReLabs
[Samsung Galaxy S24 Ultra] mailistman:
i believe it will never be available for U/U1.

CMIIW : US federal law prohibits call recording w/o consent from both parties.

unless root is available for U/U1, then magic native CR can happen.
[Samsung Galaxy S24 Ultra] nguyenlucky:
Does changing CSC to THL enable the second SIM slot?
[Samsung Galaxy S24 Ultra] S.L.:
Hi all , i just changed csc on my non rooted s 24 ultra , using latest version 4.9 of samfw tool. It took 1-2 minutes to change from eux to ilo , and call recording is working loud and clear after testing it. Also Samsung Health is working , my banking app also , for samsung pay i dont know i dont use that
[Samsung Galaxy S24 Ultra] WeWa2013:
Hello,i tried to change the CSC from EXU to ILO. But isn´t work. What i do wrong? Perhaps because my FRP Status is locked? In the Video they show "Change CSC" by ADB but by me is it in the "Root" Folder. The Phone is in the Debugging Mode...
[Samsung Galaxy S24 Ultra] WeWa2013:
Can you tell me how you do that please?
[Samsung Galaxy S24 Ultra] S.L.:
first install samsung drivers for phone on your pc , after put your phone in usb debugging mode in developer option. launch samfw as administrator , connect your phone , check in samfw that your phone is seen , if all that are good , in samfw select samsung in the left upper corner of the window , after that select mtp (is the second optin from the left side ), and there u see the last option change csc. click on it and select your desired csc , and after that click to change it. in max one minute your phone will restart , and check if you have call recorder option active. good luck . i hope u understand, my english is not the best.
[Samsung Galaxy S24 Ultra] WeWa2013:
you need credits for this? because mine not work :-( I am wondering because csc change is in the root folder. i need root for change the csc?
[Samsung Galaxy S24 Ultra] S.L.:
all i did was to download the app , install on my pc , and follow the steps i just wrote to you. i have no idea about the credits , i think to change csc u dont need them.

edit. the change csc option i used , was not in the root tab i used the one in the mtp. please read again and follow exactly what i did. i hope it will change your csc . try few times
[Samsung Galaxy S24 Ultra] WeWa2013:
ok.Thank you.