yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S10 Guides, News, & Discussion] jpp604:
As other have mentioned the USSD codes on the dialer do not work anymore on Android 11 to change the CSC.

I was about to give up for my new phone, when i saw a video on youtube claiming that Indonesia (XID) is a single CSC firmware that supports call recording and Samsung Pay.

I tried and it worked on my S10e with Android 11.

JP
[Samsung Galaxy S10 Guides, News, & Discussion] agiosioannis:
I think is working on android 12 s21 ultra

. I change every dat i found in that folder and after i reflash the custom rom . I was in EUR .
[Samsung Galaxy S10 Guides, News, & Discussion] helen2:
Ok I dont have an S sansung handy but I think the problem s the same.My samsung is A series.I was ble flashing it to enter a n band frmware (ITV) but no way to unlock csc (Just allways flashing androi 11 So my questin s..If I downgrade to android 10 ,then smehow I wll unlock the csc entering a state where I can enable records calls then I can flsh it back with ITV firmware android 11 and I will alwayshave the csc locked/chnaged or no?

Ok maybe with rot or unlocking botlader I can have the same result but I would like to dont lose waraty

All done
[Samsung Galaxy S10 Guides, News, & Discussion] ChoSmile:
What is your EXACT model SM-AnnnX

nnn - digits, X - letter

Downgrade is possible if Bootloader version is same.

Bootloader version is part firmware version, for example A528BXXU1CVJ2 -

A528 - A52s 5G model

B - for which region, B Europe, E Asia, U, U1 N.America, W Canada, N Korea, 0 China

XX - carrier locking, mistly XX unlocked

U - update, S security only

1 - Bootloader version, canfladh same or bigger only

C - Android major version, 3rd major for the model, start with A, B, C, D

V - year,... 2020 T, 2021 U ,2022 V, 2023 W...

J - month, A January... K December

2 - current compilation for the this month
[Samsung Galaxy S10 Guides, News, & Discussion] helen2:
As wrote on this post I just flashed the Indonesia (XID) and I got the option of the call recorder (yes have deated many indonesian app hi!) Now my only doubt will be if I will have trouble with as example Volte r other options we have in Europe.I was trying the ukraine firmware (android 11) without any luck.Now I'm dwnloading andriod 10 (ITV-A715FXXU3ATK1) maybe is bettar to dwngrade then after having android 10 I will be able to change csc from dial (google phone) and try to set csc of Ukraine maybe like taht will wrk and maybe Ukraine /Europe/Italy will be more sure t dod hve any troubles as LTE/Volte/ ext ext
[Samsung Galaxy S10 Guides, News, & Discussion] ChoSmile:
What is your curent firmware version?

If it is A715FXXU3BUB5, you can downgrade, larer become 4, 5, 6, 7 and now is 8 - can not go back to 3.

XID is a SingleCSC - this means yoy can not change/swit h to other CSC, because it is tbe onle one inside (single).

Other CSC are part of MultiCSC - you can change/switch between them (available inside tbe MultiCSC).

So, phone first must be flushed with MultiCSC firware.

ITV and SEK CSCs are part of OXM MultiCSC

INS CSCs is part of ODM MulriCSC

XXV, THL CSCs are part of OLM MulriCSC

ILO, EGY CSC are part of OJM MulriCSC

VoLTE depends on correct (ims and xcap) APNs - which are user configurable) and not from from CSC.
[Samsung Galaxy S10 Guides, News, & Discussion] billa:
In order to have all bands available supported by the hardware with any sim card, first flash the phone with XAA firmware, then change the CSC to XAA using any free tool such as

F*ckFRP

https://xdaforums.com/t/tool-samsung-your-frp-frp-removal-tool-updated-5-5-2020.4439497/

or

SamFw FRP Tool

SamFw Tool 4.9 - Remove Samsung FRP one click

Hi Today, we introducing SamFw FRP Tool version 4.9 Main function: Remove FRP with one click Change CSC with one click Remove FRP for new secu...

samfw.com

Keep in mind that you may not have certain specific carrier features available (ex. VoLTE), so you have to choose between having all bands or carrier features but not both. You can always change the CSC for testing purposes and try them all to find which has most of the bands and carrier features you need.
[Samsung Galaxy S10 Guides, News, & Discussion] gabytzubc:
If it's for exynos ,yes u can flash it .
[Samsung Galaxy S10 Guides, News, & Discussion] AMoosa:
You can record phone calls using a 3rd part app eg ACR.
[Samsung Galaxy S10 Guides, News, & Discussion] rovral:
Or Boldbeast or Cube Call Recorder ..... setting MIC as sound source ....

But I read that this produces a lot of noise and poor recording quality.

And above all, it won't work if BT devices are connected ...
[Samsung Galaxy S10 Guides, News, & Discussion] dreamhouse786:
I have tried it.....no success......The AP is ASD5

---------- Post added at 02:28 PM ---------- Previous post was at 02:19 PM ----------

Did you manage to find a new OXM fw? I also have a OWO and am in Brazil with the same problem as you! Did you find a solution? Mine is a SM-G970F. Would appeciate you getting back to me. Thank you!
[Samsung Galaxy S10 Guides, News, & Discussion] Sotirisdim4:
Is it true that you can't flash combination to change CSC anymore?
[Samsung Galaxy S10 Guides, News, & Discussion] dreamhouse786:
Better read all the thread! But, up to now, you can flash but the results are not as expected!
[Samsung Galaxy S10 Guides, News, & Discussion] Sotirisdim4:
Yeah I know. Download mode denies it as seen here https://cdn.discordapp.com/attachments/537300019561234442/558981753323388949/20190323_125347.jpg

"Please get approval to use factory binaries (RECOVERY)"

Always talking about S10 series specifically. I know the rest can use combination just fine,
[Samsung Galaxy S10 Guides, News, & Discussion] trieuducphu:
302/5000

I bought the device in Vietnam (SM-A530F / DS), because I wanted to test android version 9 soon, so I installed Russian firmwave and when I installed the original Vietnamese firmwave, I was stuck in THL. Now that Android 9 is available for Vietnam, it is impossible to return to the original SCS. I find it very bad. Same case with you
[Samsung Galaxy S10 Guides, News, & Discussion] Freeddi:
I have easily changed the CSC from a S10+ VD2 (Germany Vodafone) to DBT (Germany brandingfree) without Root or something else
[Samsung Galaxy S10 Guides, News, & Discussion] Sotirisdim4:
Well, share your ways! lol
[Samsung Galaxy S10 Guides, News, & Discussion] Freeddi:
Enable USB Debugging, enable OEM Unlock, Flash normally without Home CSC and SIM Card, set the Phone to Factoty Settings. Put SIM Card in and start the phone.

Look at Settings if there is DBT. Put the SIM Card into SIM Slot 2. Now you have DBT/DBT,DBT/VD2
[Samsung Galaxy S10 Guides, News, & Discussion] ru_dimka:
Does it trip knox?
[Samsung Galaxy S10 Guides, News, & Discussion] Freeddi:
Nope
[Samsung Galaxy S10 Guides, News, & Discussion] ru_dimka:
Thx. Did you try without "Unlocking"?
[Samsung Galaxy S10 Guides, News, & Discussion] Freeddi:
No. I ever have flashed with Unlocking.
[Samsung Galaxy S10 Guides, News, & Discussion] orlandson:
That is the same result as all other methods. Nothing new here.
[Samsung Galaxy S10 Guides, News, & Discussion] Freeddi:
The OP says Now you can not.change CSC code with Firmware + SIM Card. But thats not right. It works with my Method
[Samsung Galaxy S10 Guides, News, & Discussion] orlandson:
All methods will remain in 3 first CSC codes changed and the last one unmodified. Same as you get. Same as I get with "other methods". But the last one is the one what real makes difference for Samsung Pay and Samsung Members.
[Samsung Galaxy S10 Guides, News, & Discussion] Freeddi:
You cant change the last one. It doesnt matter what Method you took. For Samsung Members it has no Problems. About Samsung Pay i dont know, cause we havent it in Germany.
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
The last code doesn't affect Samsung Pay and Samsung Members as far as I know, it isn't the active CSC, it is the original CSC the device came with.
[Samsung Galaxy S10 Guides, News, & Discussion] Idkwtf:
Not a single old method to get bk 2 original csc worked.:( Call recording was greyed out, offers showed in pounds and not inr, native Samsung offers wr nt available, LTE showed as 4g, caller ID nd spam protection didn't show anymore nd what not:(

I was surprised Samsung service center couldn't fix mah problm nd had to replace phone finally aftr some days. Luckily mah phone was nt rooted as this was d 1st thing they checked to deny warranty.
[Samsung Galaxy S10 Guides, News, & Discussion] orlandson:
I tried that about 2 months ago when get my S10+, but with the original CSC (last one) I can't get S Pay working and S Members remains with language of original CSC. Now I just have all original CSC with no S Pay and wrong S Members.
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
Hi, so what is your 3 or 4 set or code under service provider software ver in about phone/software status?
[Samsung Galaxy S10 Guides, News, & Discussion] orlandson:
I flashed back to original CSC UPO after not being able to make S Pay works with only 3 codes changed. Now I have 4 UPO. Same as stock. I'd like to change to ZTO (Brazil).
[Samsung Galaxy S10 Guides, News, & Discussion] trieuducphu:
Just like what you said. However, my call recording is still active, blocking spam messages does not work like the original CSC version. What I find most disliked is that the original SCS displayed on infosamsung is THL.

I want it to return to the 4 code sets of XXV, which I think is impossible because I have tried many ways that are unsuccessful.

If possible, it is only possible to buy a new phone and never install another firmawer from another country.[IMG="https://i.imgur.com/NTiMesP.jpg"]https://i.imgur.com/NTiMesP.jpg[/IMG]
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
Try to check under settings as the app has been known to provide wrong information about active CSC.
[Samsung Galaxy S10 Guides, News, & Discussion] trieuducphu:
Please. Can you give more instructions on how to check the settings?
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
Under settings, about phone, software status, service provider software ver what does it say
[Samsung Galaxy S10 Guides, News, & Discussion] trieuducphu:
In settings, on the phone, software status, the software service provider ver displayed is: SAOMC_SM-A530F_OLM_XXV_PP_0004

as shown below.

PS: Excuse me, I set Vietnamese language!

[IMG="https://i.imgur.com/HoSWHxU.jpg"]https://i.imgur.com/HoSWHxU.jpg[/IMG]
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
Your device is already running XXV firmware, not sure what you want to change to?
[Samsung Galaxy S10 Guides, News, & Discussion] trieuducphu:
I want the content at Original CSC code is XXV and Firmware's CSC code (on Phone info) to XXV on my phone. Thank you!
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
As mentioned, phone info is often inaccurate and you should rely on what it says in the settings app(XXV/XXV/XXV). If the apps are not localised correctly, maybe you can try reflashing the ROM using Odin, with a SIM card from XXV region installed.
[Samsung Galaxy S10 Guides, News, & Discussion] tyrone1:
Which csc had caller ID and spam protection feature working?
[Samsung Galaxy S10 Guides, News, & Discussion] trieuducphu:
I have performed the original settings (wipe data / cache) to install the regional rom without THL code, remove the sim card, reinstall the original rom from updato. com rom XXV (A530FOLM4CSD4). When the machine starts up, the Thai language appears again. I installed the sim card and restored the original settings again to install the new service provider application under my sim. I think the info phone application has a problem with software identification.
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
So it worked, right? Yes seems like phone info not working well.
[Samsung Galaxy S10 Guides, News, & Discussion] trieuducphu:
Probably so. I check the imei information. info exam info is not available. Is it possible that my phone is built?

[IMG="https://i.imgur.com/ji3wM8c.jpg"]https://i.imgur.com/ji3wM8c.jpg[/IMG]
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
Do you mean bricked? I think that's impossible since your phone boots fine. I think everything should work normally now.
[Samsung Galaxy S10 Guides, News, & Discussion] trieuducphu:
Thank you! My phone is still working normally. As mentioned, I don't like the THL information on Firmware CSC code when checking with the phone info application
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
It's wrong for my phone(XSP) shows as AUT also, so you can uninstall the app since it's not coded properly.
[Samsung Galaxy S10 Guides, News, & Discussion] trieuducphu:
Thank you! I think so. Have a nice day!
[Samsung Galaxy S10 Guides, News, & Discussion] Invoked79:
Thank you for the info found here. I managed to change my phone to XEU/XEU/XEU/XSG

The 3rd field was stuck to XSG after flashing with XEU, after I inserted my sim to the second sim slot and restarted it changed.

So bottom line:

First field = firmware

Second field = Sim 1

Third field = Sim 2

Fourth field = the market that the phone was originally intended for, you cannot change this last field but it doesn't affect you, you will still get OTA updates when the firmware and the installed sim are for the same region. In my case British firmware (XEU) with British Sim card (XEU)

Oh, and don't trust the Phone info app anymore, it reports irrelevant things for S10s for some reason.
[Samsung Galaxy S10 Guides, News, & Discussion] orlandson:
How about S Pay and S Members with just last CSC unmodified?
[Samsung Galaxy S10 Guides, News, & Discussion] Invoked79:
I don't use Spay, Smembers seems to be the British version but I think it doesn't allow me to redeem any offers, at least the 2 I tried to click today after the flash.

Anyway it's not a deal breaker for me as long as I get OTA updates. I bought the phone online for a 200£ profit and if OTA work I am perfectly pleased. They worked for my S9+ though as I was XEU/XEU/XEU/XSP

So fingers crossed till the the next patch!
[Samsung Galaxy S10 Guides, News, & Discussion] Arzee08:
Don't think that can be entirely true, I've switched from o2 to three in the uk flashed three firmware but can't get the fourth set to change. If I think what your saying fourth field should be the market/ region, but mine is my last carrier/network o2u. Looking to try and change if possible as I can't use hd voice since changing to three.
[Samsung Galaxy S10 Guides, News, & Discussion] tyrone1:
I think the 4th is the original firmware the phone came with.

I was able to get hd voice using ARO csc.

But Samsung pay doesn't work.

I tried EE (evr csc) and it worked.

Did Samsung pay work on o2 csc?
[Samsung Galaxy S10 Guides, News, & Discussion] Arzee08:
Damn was hoping that wouldn't be the case. Is there anywhere to read or get info about this service provider software stuff on Samsung devices, I've tried Google but keep coming back to flashing stock firmwares etc.

Couldn't tell you mate sorry, my bank doesn't support Samsung pay. Contact less payments worked via my banking app if that's any conciliation
[Samsung Galaxy S10 Guides, News, & Discussion] tyrone1:
I flashed o2 CSC, couldn't get hd voice to work but everything else worked.

Only way I been able to test is to flash different firmware and see what is working...
[Samsung Galaxy S10 Guides, News, & Discussion] leolstein:
Hi guys, someone found a way to change the CSC?

I want use Pay in Brazil, but don't found a solution.
[Samsung Galaxy S10 Guides, News, & Discussion] tyrone1:
What firmware csc you currently on? ZTO?

I think how you can do it is you can install one of the UK csc firmware like btu, o2u, evr. When I boot for first time with a us sim card Samsung pay works...
[Samsung Galaxy S10 Guides, News, & Discussion] Umbrellaus:
Can you show us your service provider screenshot?
[Samsung Galaxy S10 Guides, News, & Discussion] tyrone1:
I'm using SFR csc for TMobile.
[Samsung Galaxy S10 Guides, News, & Discussion] TheUndertaker21:
Anyone managed to get t-mobile csc to work on F models?
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
No way without rooting, it seems
[Samsung Galaxy S10 Guides, News, & Discussion] TheUndertaker21:
Well I'm rooted lol
[Samsung Galaxy S10 Guides, News, & Discussion] ru_dimka:
OXM firmware has a multi-regions and single-regions inside. You can easily change the region from multi to multi with simcard, but you can not change single-one to multi-one and I can not find any solution
[Samsung Galaxy S10 Guides, News, & Discussion] tyrone1:
I use TMobile USA. I not rooted. What csc you currently using.

Best csc I've been able to use is SFR which is French. WiFi calling, hd calling, video calling, caller ID and Spam protection, Samsung pay, volte toggle, ims registers all work.

Downside is it a 4g icon instead of lte and also never see 4g+ or advanced lte icon but I believe those features work just don't show the icon.

Alternative is ARO csc which has everything but Samsung pay.
[Samsung Galaxy S10 Guides, News, & Discussion] TheUndertaker21:
How did you manage to get flash it?
[Samsung Galaxy S10 Guides, News, & Discussion] tyrone1:
Download whole firmware and flash with Odin.

For the s10 sfr it would be there oxj firmware.

I'm on s10e and I guess there are more csc files.
[Samsung Galaxy S10 Guides, News, & Discussion] TheUndertaker21:
Thanks man.

Everything is working as intended.
[Samsung Galaxy S10 Guides, News, & Discussion] tyrone1:
Which one did you end up going with?
[Samsung Galaxy S10 Guides, News, & Discussion] TheUndertaker21:
Oxj firmware
[Samsung Galaxy S10 Guides, News, & Discussion] TheUndertaker21:
View attachment 4761607
[Samsung Galaxy S10 Guides, News, & Discussion] tyrone1:
How you get that ims settings page to show or how you get to that page? Thanks
[Samsung Galaxy S10 Guides, News, & Discussion] TheUndertaker21:
You need root

https://play.google.com/store/apps/details?id=ljh.openimssettingssamsung
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
Hi, so I have done some experimenting, with a Singapore Single CSC in OXM (SIN), When I insert a UK SIM card, there is no prompt to reboot phone to change settings, even when I reset. After I changed to XSP, A multi CSC in OXM, and do the same(Insert UK SIM), there is a prompt. Maybe that's what's different for Single and not single, as SIN is actually sold for a dual SIM model.
[Samsung Galaxy S10 Guides, News, & Discussion] tyrone1:
Hey just curious you ever get the icon to change to 4g+ ?

I used to get it on other csc but now I never get it. Tried a bunch too.
[Samsung Galaxy S10 Guides, News, & Discussion] ru_dimka:
So you changed the phone to different region model, right?
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
Yes I did. At first I tried to change to UK CSC from SIN, but inserting SIM and reset prompts nothing. For my model my *#272 IMEI menu works, so I changed to a non Single CSC in OXM(XSP), then reset. After that, I insert my SIM and manage to change the CSC as it prompted. If *#272 menu doesn't work for you, can try flash non OXM firmware, and Flash back without SIM to use the default CSC in OXM.
[Samsung Galaxy S10 Guides, News, & Discussion] ru_dimka:
I tried to flash the Cyprus FW and region changed to VD2/VD2,VD2/SER. Then I flashed OXM firmware with THL sim-card inserted and got SER/SER,SER/SER :((( So it does not work for me. *#272*IMEI# also does not work.
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
What do you get if you flash VD2 then OXM without SIM? Also, have you tried another SIM from another provider(best to be a MNO and not MVNO)?

Edit: also, you checking your CSC in settings right,not the phone info app?
[Samsung Galaxy S10 Guides, News, & Discussion] ru_dimka:
Without sim I get the same. Looks like the phone get the CSC from the factory value (last "SER"). No, I have not tried another SIM. Sure, I checking in settings.
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
Hi, did you forget to write something in the post?
[Samsung Galaxy S10 Guides, News, & Discussion] DrearierJester1:
Has anyone a solution changing XSA to XSP? The method no longer works and *#272 no longer pop up.
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
What is your default CSC( The last one under service provider ver.)
[Samsung Galaxy S10 Guides, News, & Discussion] DrearierJester1:
XTC. I accidentally press XSA / Single when I changed it to via *#272 . Now *#272 no longer works. Sad
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
Okay, remove your sim card, flash it to another non OXM rom( can try Vodafone UK) then flash back any OXM rom. Then it should be back to XTC.
[Samsung Galaxy S10 Guides, News, & Discussion] DrearierJester1:
Thanks man. Will update you shortly.
[Samsung Galaxy S10 Guides, News, & Discussion] DrearierJester1:
No luck. :( Do I have to insert sim card when flashing back to any OXM rom after the non-OXM?
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
So your device is still XSA? What does service provider ver. Show for the 3 or 4 set of code. Where is your sim card from?
[Samsung Galaxy S10 Guides, News, & Discussion] DrearierJester1:
After installing Voda UK , CSC changed to VD2, and then I rebooted and went to Download mode again and Flashed XTC OXM ROM April 2019 (from SamMobile), No Sim inserted, after reboot, did setup and went to service provider and the CSC went back to XSA .

This is currently shown, XSA/XSA,XSA/XTC
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
The only thing left is trying to repeat this with sim card inserted?
[Samsung Galaxy S10 Guides, News, & Discussion] DrearierJester1:
Just tried using a PH Sim-Card (XTC = Philippines) , and it went back to XSA .... Any other ides perhaps you have ? What other NON-OXM Countries I can try? Probably that may work?
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
You tried flashing with the XTC SIM card?

There seems to be a group that found how to do it (Korean multi CSC) but they seems not willing to share, they open shop in Korea.

https://m.blog.naver.com/wodnjs6016/221539459902
[Samsung Galaxy S10 Guides, News, & Discussion] DrearierJester1:
Yep with XTC SIM, Too bad. :( I think I'm on a dead-end now. :(
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
Just need to hope someone can share how to do it fail-free. Maybe someone knows Korean can visit the link and ask them?

https://m.blog.naver.com/wodnjs6016/221539459902
[Samsung Galaxy S10 Guides, News, & Discussion] dancake:
My S10+ (SM-G9750) from HK worked with WiFi Calling on my Three UK SIM. I have since changed carrier to iD Mobile (mvno of Three) and WiFi / VoLTE Calling no longer works.

Is it possible to change my THY/THY CSC? Or is it a case of factory resetting with iD mobile SIM in?
[Samsung Galaxy S10 Guides, News, & Discussion] Alaa Elrifaie:
I have exactly the same question.
[Samsung Galaxy S10 Guides, News, & Discussion] k_ahm.143:
I've changed my csc from XEU (United Arab Emirates) to DBT (Germany) with phone info app with rooted access.
[Samsung Galaxy S10 Guides, News, & Discussion] orlandson:
How about S Pay?
[Samsung Galaxy S10 Guides, News, & Discussion] k_ahm.143:
No go
[Samsung Galaxy S10 Guides, News, & Discussion] tyrone1:
DBT Samsung pay doesn't work even if not rooted. Samsung pay isn't in Germany... If you install Samsung pay it will show a screen saying coming soon.
[Samsung Galaxy S10 Guides, News, & Discussion] Freeddi:
Where do you see this?
[Samsung Galaxy S10 Guides, News, & Discussion] tyrone1:
I installed DBT on my phone. I also tried dtm as well. Both have a Samsung pay coming soon screen.

The French and uk csc have working Samsung pay
[Samsung Galaxy S10 Guides, News, & Discussion] Freeddi:
Did you have Screenshots from that? I have original DBT, but when i install Samsung Pay from apkmirror, i dont have this Message
[Samsung Galaxy S10 Guides, News, & Discussion] tyrone1:
So you saying Samsung pay works for you on DBT? I was able to download Samsung pay from the play store... I was also using DBT csc in USA. Since then I have moved towards Mexican csc as they work better.