yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S23] fteech:
Hi everybody,

First, many thanks for all the info in this thread, it's very interesting and I've been following it actively.

I'll tell you about my issue: I bought an S23 (normal model, not Ultra) in Colombia during holidays. I come back to Switzerland and I try to use Samsung Pay but it tells me it's not available in my country.

So I found this (and other) threads, some saying you have to try to change the country, others the CSC, others both.

Concerning the current CSC, I see two different things:

- If I use the dialpad method with *#1234#, in the CSC I see: S911BOWO1AWA6. From my understanding, the CSC is "OWO".

- if I use the Settings > About phone > Software information > Service Provider SW Ver., I get "SAOMC_SM-S911B_OWO_COO_13_0011". And below it says "COO/COO,COO/COO/COO". It seems I am on COO ?

So since many people said that CSC change was not necessary, only change ISO country of the phone, I first tried with usual Alliance Shield but the CountrySelection would not open. So then I used the new Alliance Shield (Reshield) and this time I could open it. I got the window asking for my country, but I had no dropdown and the reboot button was greyed out. I searched for solutions and people said that I should change CSC to be able to change country.

So I tried SamFw tool.

Supported CSCs where listed:

ANC | ARO | BVO | CDR | CGU | CHE | CHL | CHO | CHT | CHX | COB | COL | COM | COO | CRC | CTI | CTP | CTU | DOR | EBE | ECO | EON | GLO | GTO | IUS | MXO | NBS | PEO | PET | PGU | PNT | PSN | PSP | SAM | TCE | TGP | TMM | TPA | UFN | UFU | UPO | UYO | ZTA | ZTM | ZTO | ZVV

There is no EUX or AUT. So I chose custom value with EUX (also I tried AUT after)., I get this:

Running exploit... FAIL
Changing CSC to EUX ... OK
Rebooting... OK

Is it normal that Running exploit... FAIL ? Anyways, it seems it changed the CSC.

But then if I try again the CountrySelection via Reshield, I still don't have any dropdown. And the CSC doesn't seem to have changed, I still see same settings with *#1234# and in the About device...

My finaly goal is just to be able to use Samsung Pay in Switzerland... Can anyone give some help ? Thank you so much
[Samsung Galaxy S23] ChoSmile:
expoit... failed is not important (it is part of other unneeded process, just ignore this row)

Your phone is with different MultiCSC: OWO

1.You need first to download some/any OXM firmware.

2. The flash it with Odin.

3. After that SamFw will have option to choose CSC, part of OXM MultiCSC.

(example, look for:

1. Frija app, SM-911B CSC: EUX

2. Odin 3.14.4 also youtube "odin flash"

3. maybe EUX will not show SPay, use XXV or INS

)

Good luck 🍀

P. S.

Might be your phone also have Redional lock, so if Europisn sim is not accepted - in order to use South America phone with other region sim card - first you need to have at least 5 minute call(s) with original region sim card (phisical sim or esim), then Regional lock will be unlocked to be used with any region sim card.
[Samsung Galaxy S23] inthedark22:
Anyone with ilo csc from eux got the March update yet?
[Samsung Galaxy S23] kuschelhase_13:
no this update märz is not avaible

i have the eux geflasht and have märz update ^^
[Samsung Galaxy S23] megatooth:
In this case use odin.
[Samsung Galaxy S23] WesTokyo:
Not yet, I can wait a few days.
[Samsung Galaxy S23] inthedark22:
Me too. But i hope i didn't brake the OTA updates.
[Samsung Galaxy S23] LuthorKid:
INS does support spam detection, including call recording. I know cos I recently changed mine to INS. Now, regarding the OTA update, I can't say for sure if it's permanently crippled or not, though I doubt OTA will be affected. I have been on the look for the recent update on my region and it hasn't been seeded yet. Also, other features work too.
[Samsung Galaxy S23] asc366:
Noy yet -- still waiting as well. Don't wanna go back to other CSC's every month :-) (Using a Mac so flashing using Odin isn't really a thing)
[Samsung Galaxy S23] inthedark22:
Ican wait a bit longer but eager to dind out the ota still works. Odin isn't my friend either. Stopped rooting and custom roms for that reason.
[Samsung Galaxy S23] problem_child:
Hey

I changed just now to eux bte (British Telecom I believe). Got the March update. Didn't want call recording anyway. I use google phone app.

Samsung wallet doesn't show signs of life though - not that I care 😃
[Samsung Galaxy S23] inthedark22:
Got ota today ☺
[Samsung Galaxy S23] asc366:
Yep same
[Samsung Galaxy S23] Harrt:
I changed my CSC to THL but couldn't get the update. On the samfw site, update is still there. I changed my csc from XSG. Did I break OTA?
[Samsung Galaxy S23] arniman:
I Change from INS to THL and the update arrive eminently
[Samsung Galaxy S23] Harrt:
was INS your primary csc?
[Samsung Galaxy S23] xkhen0017:
Using INS is fine, thought it doesn't have the OTA yet even on SamFw. It might take some few days
[Samsung Galaxy S23] hoss_n2:
Why those two values doesn't change with csc changing, what does they mean , and is there any way to change them to match current CSC ?
[Samsung Galaxy S23] Harrt:
As far I know, those two can't be changed. It's referring to the country where it's made.

Obviously, you can change it using superuser privilege. But, the first ones will be the csc of your current rom.
[Samsung Galaxy S23] Mrxyzl:
Is there a list of csc features for each csc I can check?
[Samsung Galaxy S23] WesTokyo:
Ota landed for me for ILO
[Samsung Galaxy S23] ChoSmile:
INS OTA (S91*BXXS1AWBM - just security) also available for S23 (SM-S911B) / S23+ (SM-S916B) / S23 Ultra (SM-S918B) models
[Samsung Galaxy S23] yakapa40:
more informations here:

https://xdaforums.com/t/galaxy-s20-ultra-g988b-firmwares-5g.4060443/page-13#post-82681987
[Samsung Galaxy S23] hoss_n2:
Aaah ok I understand now thanks , so these values are fixed and unchangeable
[Samsung Galaxy S23] antenehnile:
yes. I do
[Samsung Galaxy S23] problem_child:
sooo, I just got some automatic message that my service provider (basically the CSC code) is changing from the UK one I've set to EUX (eu general). Is that normal?

phone was bought in France while used in Croatia
[Samsung Galaxy S23] gpap2004:
Yes I think is normal
[Samsung Galaxy S23] problem_child:
So what you need to manually revert back to your region of choice then?
[Samsung Galaxy S23] gpap2004:
You can going back to the CSC of your region with the help of samfw tool, changing to the appropriate csc you want
[Samsung Galaxy S23] yakapa40:
problem_child​

if your carrier is Tmobile you can stay with EUX ( CRO is inside EUX )

if your carrier is A1 you can stay with EUX or change to VIP ( A1_HR )
[Samsung Galaxy S23] sbassios:
Hello,my s23u came with eux,i changed the first day with sek to have the call recording,i want to ask, if I change to ins will i have call recording, Samsung pay, spam protection and ota updates?
[Samsung Galaxy S23] gpap2004:
Hi. Yes you will have. BUT, S Pay is only for Indonesia. And if you have a samsung watch 4 or 5 , you cannot work ECG and blood pressure monitoring
[Samsung Galaxy S23] sbassios:
no,i dont have Samsung watch!!s pay will not work with the Greek banks?
[Samsung Galaxy S23] gpap2004:
SPay not working in Greece. But Google Pay works!! I use ILO csc for EUX Greece and I'm very happy! Call recording and spam protection. And galaxy watch . And OTA updates. No SPay but it's useless in Greece
[Samsung Galaxy S23] ChoSmile:
Yes x4
[Samsung Galaxy S23] ChoSmile:
SPay in XID CSC is the only local version of Samsung Pay for Indonesia.

SPay in INS CSC is an inernational Samsung Pay - works with every bank that have Samsung Pay support + India bank extras.
[Samsung Galaxy S23] ChoSmile:
Every *Pay (Google Pay, Samsung Pay, Apple Pay, Fitbit Pay, Garmin Pay, Wena Pay, Huawei Pay and so on...) have INDIVIDUAL contracts between EXACT PAY service and BANK/FINTECH.

If of there is no contract between Samsung Pay and your Bank - it can not add card to Samsung Pay.
[Samsung Galaxy S23] Veestaai:
Can call recording be enabled on S23U bought in Canada?
[Samsung Galaxy S23] LuthorKid:
I don't think so. It only works on global model with altered csc. Your best bet to getting it is by rooting & custom ROM.
[Samsung Galaxy S23] gpap2004:
No, unfortunately it can't
[Samsung Galaxy S23] Harrt:
which csc tends to give faster updates? ILO, INS, THL, SEK?
[Samsung Galaxy S23] ChoSmile:
Only Samsung desides when to release exact CSC.

In most cases they are SAME FILES (BL, AP, CP), - only CSC (CSC and HOME_CSC) are different (some times) - but firmware are COMPILED almost on same day - just released in differet days.

EUX is FIRST / FASTER new firmware releses.

Then new Bootloader is relased - some small region is first test and then all are showpn. Sometimes even not fully assigned by Google Protect - and "Device is not Play Protect Certidied" ...

If you are impatient to wait - just downloa EUX (BL, AP, CP, HOME_CSC) and flash with ODIN - firmware version will be new, CSC remain the same.
[Samsung Galaxy S23] gpap2004:
Till now , ILO gives updates shortly after EUX (in 2-3 days after)
[Samsung Galaxy S23] Gnuig:
I switched to INS 😁 Many thanks for great tips and SamFw tool work perfect 👍 Just one minus with INS is the 3xpress will initiate the emergency call (by law in India), and I'm used to 2x for the camera from the lockscreen - and I use this a lot - but have now a couple of times, accidentally called 112 (911) here in DK from extra presses, not the best thing if it happens 🙃 But still, call recording is important for me 😊
[Samsung Galaxy S23] WeWa2013:
Hallo, You can confirm that wichtig SEK Call ID don't work?
[Samsung Galaxy S23] efkosk:
Use ILO, it's the best
[Samsung Galaxy S23] gpap2004:
Yes , SEK doesn't have Call ID support natively. BUT , ILO has! I am in ILO some months already and I'm very satisfied. OTA updates are also well and fast working. Only Samsung Pay doesn't exist but I don't care as Google Pay is better.
[Samsung Galaxy S23] WeWa2013:
I use the watch 4, soon the 5. EKG works there too?
[Samsung Galaxy S23] WeWa2013:
Thank you for this. Watch 5 also no Problems?
[Samsung Galaxy S23] efkosk:
Yes I have 5, no problem.
[Samsung Galaxy S23] gpap2004:
I confirmed, working flawlessly
[Samsung Galaxy S23] Saleem360:
Thanks for this info bro.
[Samsung Galaxy S23] nickbarbs:
Hi all, picked up a s23 ultra on ebay it has got oxm / eux / o2u csc. Was annoyed to see it was o2u as the seller didn't mention that. He refunded me 50£ so I have it registered on my insurance and just decided to keep it.

Is it worth switching the csc from o2u to btu or eux? I am on Vodafone uk, was concerned about WiFi calling not working but it does work. Fine. Actually everything works it's more just knowing I'm on o2u without being an o2 customer :D

Should I just download the oxm package and flash a different csc with odin? Do I need to unlock bootloader? Thx
[Samsung Galaxy S23] ChoSmile:
This is Call Recording thread.

You can change to whatever CSC you want with Samfw (free) or Samkey (paid), no need to flash, no need to unlock anything. Can be done unlimited times.
[Samsung Galaxy S23] antonello66:
scusa ma l'acronimo RB significa Re-Brand??
[Samsung Galaxy S23] deffyplus:
Hello,

I'm curious to try out different CSC options for my S22 Ultra and have extracted using SAMFW tool, the supported codes from my phone. However, I'm still searching for some options that I couldn't find. Can someone help me out?

Additionally, I'm wondering what the best solution is for getting a call recorder and spam ID without losing OTA updates. Any advice would be appreciated. (as ILO not listed...)

View attachment 5883985
[Samsung Galaxy S23] ChoSmile:
For S22 Ultra Europe model SM-S908B - there is only one CSC with Call Recording enabled: SEK

CallerID (as you name it spam ID) is not available for SEK but can be used via external app (Hiya) where spam and nuisance callers are "shown/warned" before you pick up in popup window (so you can reject call) but automatic block is paid.

OTA works flawlessly, sometimes Samsung release it few days later than EUX. Anythime can flash via ODIN BL, CP, AP and HOME_CSC (without any data lost) and update it earlier with any of the released CSC because all of them are in same MultiCSC - so and OTA will work on next SEK firwaware release.

I'm still using SM-S908B as my second phone, there was a glitch in the beginning for several months it was possible to use INS (yes not part of the MultiCSC) with manual ODIN updates but Samsung fix it and then I switch to SEK - works excellent.
[Samsung Galaxy S23] deffyplus:
@ChoSmile

First of all, thank you so much for the comprehensive answer!

I have one more question, regarding changing CSC, is it possible to change back to the original (yes I know there are an unlimited number of changes CSC) EUX without jeopardizing the warranty of the phone I got a phone from Germany and it is still under warranty....
[Samsung Galaxy S23] ChoSmile:
CSC change does not trip Knox, warranty is not voided, so for example any future official servicing will not be denied under warranty even if it is not with EUX
[Samsung Galaxy S23] rubayet.ansary:
a
[Samsung Galaxy S23] elmonster:
a new update is available for my s23 ultra. do you think samsung patched the possibility to change the csc with the update?

my origin csc is eux and now i am on ilo. iam afraid that i cant switch back to eux after update?
[Samsung Galaxy S23] gpap2004:
I don't think so.
[Samsung Galaxy S23] ibizapower2003:
Hello guys,

I'm trying to get this call recorder on my s23ultra,

I'm from Australia and I understand I need to use samkey and buy credit.

What I don't get is where to buy this credit.

and is it even possible that 30 credits costs 79 us dollar? that's almost $100

thanks
[Samsung Galaxy S23] gpap2004:
Hi. From the samkey page you can go to Resellers and choose one of them . It is not so costly from there. Only if you search outside of the site or ebay
[Samsung Galaxy S23] ChoSmile:
If your S23 Ultra model is SM-S918B - you can use SamFw for free to change CSC: THL, INS, ILO, XXV or SEK

If your model is not ends with B but U, U1, 0, W or N (bought from other place) - even paid Samkey can not change CSC to one with Call Recording feature.
[Samsung Galaxy S23] ibizapower2003:
thanks a lot.

I'll give it a try
[Samsung Galaxy S23] BrainJack:
Hey. I'm sorry to post this here but S21 Ultra forum is pretty much dead. Sim 2 in sim manager won't show on my S21 Ultra. I think it's because I changed CSC to XSA along the way and now the phone's CSC is a mess. It's service provider in download mode is XSA and I don't think that's how it is supposed to be. How can I revert the CSC back to EUY? Thanks
[Samsung Galaxy S23] ChoSmile:
Same way, use SamFw free or Samkey paid to switch it to desired CSC from available CSCs in the MultiCSC.
[Samsung Galaxy S23] BrainJack:
Thanks for the prompt response.

I haven't been able to change the service provider ID with the SamFw tool. Tried so many CSCs and different firmwares, no luck yet. Any other suggestions would be great!
[Samsung Galaxy S23] ChoSmile:
Maybe try older version samfw 3.31

On newer 4.x it have some suspicios files and maybe ypur pc's antivirus block it.

Enable developer mode, enable "Via USB" inside.

Try reading ADB information before CSC change.

Put phone in Test menu before hitting change, via Phone app: *#0*#
[Samsung Galaxy S23] BrainJack:
Thanks for the reply again!

I thought of that too but the software forces to update...

PS: I changed to XSA on the previous 3.31 version.
[Samsung Galaxy S23] ChoSmile:
Before 4, it just remind you. (after it is auto)

So download 3.31 again and change it.
[Samsung Galaxy S23] megatooth:
SamFw_Tool_v3.31... this is the way. :)
[Samsung Galaxy S23] BrainJack:
Thank you so much people, I will try again and let you know!
[Samsung Galaxy S23] BrainJack:
I changed my CSC to EUY with the previous version of the SamFw software and got the functionality back!

Thank you guys, you saved somebody's life!!
[Samsung Galaxy S23] ChoSmile:
I'm using two phones at a time (S23U and S22U at the moment), my previous S21U still working with INU CSC. Everything works fine: Dual physical SIMs, eSIM, VoLTE, VoWiFi, 5G, LTE, internal CallerID and block, Samsung Pay and internal Call Recording.

If you want to try it, add these three numbers to block list before CSC change. (It will save you an SMS sent for every new sim inserted because INU is an India CSC, like INS)

+919560345888

+918424098931

+919176905802
[Samsung Galaxy S23] PFusion:
I'm about to purchase an S23 Ultra (US Version - Unlocked from Amazon), does changing the CSC still work to enable call recording? I ask because sometimes manufactures release updated models with newer firmware/patches that sometime nix cool things like this.

If it still works what is the recommended country to use?
[Samsung Galaxy S23] PFusion:
Do you have a US Version of the S23 Ultra? If so you were you able to get dual physical sims/ eSIM working? I didn't think it was possible.
[Samsung Galaxy S23] ChoSmile:
I have never tested U or U1 models, so I'm not sure which of them are single or dual physical sim, also if eSIM support is enabled.

It is written SEVERAL TIMES that U, U1, W, N, 0 - models do NOT have any CSC with Call Recording enabled option.
[Samsung Galaxy S23] PFusion:
Thank you!
[Samsung Galaxy S23] mohsenr:
I have S23 Ultra (S918B) and my csc is FWD/FWD,FWD/XSG/FWD

I want to change it to INS or XXV for enabling call recorder

If I use samfw tool, will my device warranty be void?

What is the safest way to change it without voiding the warranty?
[Samsung Galaxy S23] ChoSmile:
No. SamFw.
[Samsung Galaxy S23] shootographer:
The one i will buy today model number is SM-918B/DS fullcode: SM-918BZXCMEA

So what does ZXCMEA code mean after 918B (I think its United Arab Emirates device), the important part is the B letter coming after 918 right? So that, it means i can change my CSC to any other 918B device, am I right? I really appreciate quick answer pls ASAP. I will not buy it otherwise. Thank you so much.
[Samsung Galaxy S23] sifatrhmn:
After Changing CSC, dose anyone having problem receiving calls?

I changed my CSC to INS using samFw tool now everything is working fine, but only 70% time when someone tries to call me, they find my phone is switched off, but it's not.

Anyone having this wired issue?
[Samsung Galaxy S23] TODI1111:
I replaced the EUX csc with ILO. I use the device with an e-sim. I don't experience any problems.
[Samsung Galaxy S23] xstrike9999:
My S23 Ultra's CSC is showing as EVR (Screenshot attached)

My model number is SM-S918B/DS

What is the best way for me to enable call recording while keeping SPay and CallerID and OTA

I can forgo SPay but definitely need CallerIDand OTA

Will appreciate any help you can give.
[Samsung Galaxy S23] ChoSmile:
Yes, SM-S918B means you can change CSC to INS, THL, XXV, ILO or SEK to enable Call recording.
[Samsung Galaxy S23] ChoSmile:
CSCs for SM-S918B:

INS - call rec, call ID/spam, SPay

THL - call rec, call ID/spam, no SPay

XXV - call rec, SPay, no call ID/spam

SEK - call rec, no call ID/spam, no SPay

ILO - call rec, call ID/spam, no SPay

All will have OTA updates.

If you choose INS, better before change add these numbers to block list via Phone app:

+919560345888

+918424098931

+919176905802

elsewhere on every new sim inserted, phone will send one sms to India authorities (no problem even sent, local law requirment and just international sms price of used sim mobile plan)
[Samsung Galaxy S23] xstrike9999:
Amazing. Thanks so much for the super quick response.

Will I lose data from changing the CSC?
[Samsung Galaxy S23] ChoSmile:
No.
[Samsung Galaxy S23] ekundefined:
I changed from EUX to Israel. In Bulgaria its perfect. Call Recording, Caller ID, Spam Protection are working perfectly.

I noticed that the Fw tool showed failed to change, but actually csc eas changed
[Samsung Galaxy S23] Dejan317:
Hey,

I need to change CSC on my S23 ultra to have samsung pay. i need it to use car digital key.

If I use SamFw tool, will I use my data on phone? will it do factory reset?

What do I need to know before doing it?

will INS code be ok for having samsung pay?

Thx for help, been totaly new in this area
[Samsung Galaxy S23] ChoSmile:
INS have all. SPay, DigiKey, Call rec, CallID/spam, no reset, no data loss, add the 3 numbers to block list:

+919560345888

+918424098931

+919176905802
[Samsung Galaxy S23] Dejan317:
How do I do it?

is there any manual?
[Samsung Galaxy S23] ChoSmile:
Manual to block number?

samsung block number - Google Search
[Samsung Galaxy S23] Dejan317:
to change csc
[Samsung Galaxy S23] ChoSmile:
This whole thread is full of guides.

Google and YouTube also.

Just you ever try search in any of them?

Exabple:
[Samsung Galaxy S23] zaffar.mughal:
what are these numbers? why these 3 specific numbers?
[Samsung Galaxy S23] ChoSmile:
Explained many times.

If interested, please, use search.
[Samsung Galaxy S23] samlis:
Hi, I changed my csc from ECT to EUY I did not get an update in may? what do I have to do to get the update? Thanks
[Samsung Galaxy S23] ChoSmile:
Latest update is ...WD1 (from April) release on May 2nd.

What is your phone's current firmware version?
[Samsung Galaxy S23] pertecara:
I would like to change the CSC of my S22 Ultra (SM-S908B/DS) from EUX to INS but this one is not in the list of available.

I only have these:

BTB | BTE | EVR | MEO | MET | SFR | TSI | BOG | CAU | CPW | EUX | EUY | MOB | MOT | MSR | O2C | PLS | PRT | SEK | SER | SIM | SKZ | SWC | TIM | TOP | VIP | WWA | WWC | WWD

Can I force SamFWTool towards one not present like THL or INS?

Thank you for reply.
[Samsung Galaxy S23] appro77:
I'm on TEL CSC (Telstra Australia). Will VoLTE still work after CSC change to SEK?

Does anyone have experience of if VoLTE still works after a CSC change? This is critical for me as our 3G network shuts down next year.
[Samsung Galaxy S23] stryke-:
I haven't tried SEK but ILO csc still let's me use VoLTE. You'll lose S-pay with that csc though.
[Samsung Galaxy S23] ChoSmile:
On S22 Exynos series - models B - only SEK have Call Recording. (INS is part of S22 SnapDragon E models.)
[Samsung Galaxy S23] pertecara:
Thanks for the info, ChoSmile.

Very appreciated

I need the SPay.

As it is, it's not worth switching
[Samsung Galaxy S23] nsvladimir:
I change CSC to ILO and record call working good but my samsung calendar marked Friday and Saturday as a weekend day 😀. Is it possible to changed weekend days colors?
[Samsung Galaxy S23] inthedark22:
I have that too. Never noticed.
[Samsung Galaxy S23] sbassios:
Until now i am using ILO csc and i would like to ask,with ILO can i use rcs?or i have to change csc?

i tried SEK and i can use rcs,i tried ins and i cant send...any idea which csc have everything(call rec,spam call) and rcs?or how to enable rcs on sammsung messages?
[Samsung Galaxy S23] Dejan317:
Samsung S22 ultra.. i dont have INS code when I check support

Can I force it?
[Samsung Galaxy S23] ChoSmile:
S22 Ultra (SM-S908B) only SEK has Call Recording.

S22 Ultra (SM-S908E) has INS.

Other variants SM-S908x - x is U, U1, W, N or 0 - sorry, no CSC.
[Samsung Galaxy S23] Dejan317:
I would like to have call ID and Spay

Which one does have this? Spay must have for digital car key

Thx
[Samsung Galaxy S23] magber68:
Hello. Can someone tell me how I can record calls with the S23 ultra with OS for Spain... Thanks in advance.
[Samsung Galaxy S23] yakapa40:
it's a ILO CSC configuration so if you are not rooted you can't change it

if you are rooted change XXXXBRX to XXXXXXX or delete the line

View attachment 5917123

you can change your CSC to INS SEK SLK THL or XXV
[Samsung Galaxy S23] fredympaul007:
Hello..I am in confusion between buying the international version or the UAE version. I am currently in UAE.

Is automatic call recorder supported in these versions? Or I should change my CSC using samkey?
[Samsung Galaxy S23] ChoSmile:
S23, S23+ and S23 Ultra in UAE are sold International versions SM-S911B, SM-S916B and SM-S918B with XSG CSC - which is for UAE. The CSC of these SM-S91*B devices can be changed* to INS, THL, XXV, ILO, SEK,... to enable internal Call Recording feature.

* via SamFw (free) or SamKey (paid).