yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S23] fredympaul007:
Do changing CSC to these countries affect signal reception or 5g bands?

My galaxy watch 5 is UAE version, does it affect pairing with phone if I change CSC?

Thank you
[Samsung Galaxy S23] ChoSmile:
No. On my phone everything works fine. And also can be changed unlimited times.
[Samsung Galaxy S23] nguyenlucky:
S9080 can use China firmware (CHC) to get call recording, but no Google services.

S908N (Korea) has call recording in all CSCs (KOO, KTC, SKC, LUC).

I quoted you several times on this matter already, but you keep telling people otherwise.
[Samsung Galaxy S23] ChoSmile:
Ok, I'll take a note!

But I personally do know someone how will switch to CSC for Call Recording on "price" to lose Google Services. So, no reasonable option for "0" model.)

For N model CSC change is forbidden by Samsung. Even all N CSCs has Call Recording, people not interested because of it.
[Samsung Galaxy S23] ChoSmile:
Do no update to S91*BXXS2AWEA

The firmware is not signed by Google Play Protect - so phone become UNCERTIFIED and Google Pay stops, other SafetyNet dependent also.

At the moment only THL CSC is pushed to ...WEA. Others (at the moment) are on WD1.

TThe is nonoption to downgrade because this is first firmware with new 2 bootloader.

Deleting, Unistalling, Clearing data, even Factory reset do NOT avoid uncertified status.

(There is a chance for updating Play Protect but it's less likely before Samsung new firmware.)

Current option for already updated to WEA:

Just wait for new WEx (after A) or WFx firmware.
[Samsung Galaxy S23] sabes143:
You can use the samfw tool without resetting the phone. I did change mine from EVR to THL and everything is working. Good luck
[Samsung Galaxy S23] ucancallmeFisseDK:
SamFwToolSetup_v4.7.1.zip contain virus according to windows defender (win 10).....
[Samsung Galaxy S23] IwaseKen:
yes, it has trojan. I'm on XXV already have call recording. Last week I intended to change to INS to have callerID and spay, but after downloading SamFw Tool, I think I'm still on XXV
[Samsung Galaxy S23] Numicros:
I add attachment SamFW v3.1 which is clean and works with S22 and S23 without any problem.
[Samsung Galaxy S23] _Sofos_:
Argh already did the update and after the first 3 payments it's now blocked...

If you manage to get it to work please let us know!
[Samsung Galaxy S23] jesper10c:
Feel your pain - changed csc the same day (just after) the csc was released. Phone had been great til then too 😬
[Samsung Galaxy S23] ChoSmile:
Choices:

- Тhe realistic solution to the problem is new/next Samsung firmware. (this month)

- Тhe less likely solution is a new Google Play Protect (never happens, or not before next samsung fw)

- Donwgrade to "cerified" firmware version. Only if possible - means older fw is same bootloader version. (Currently S23* not possible, S22 is possible.)

-Other software fixes are most likely to trip knox or to brick phone. (These fixes are mostly made for rooted phones to deceive Play Protect that "device is not rooted". I never saw such fix working on device that do not have root access to install it.)
[Samsung Galaxy S23] nguyenlucky:
for N models, they used to be able to change CSC. I personally did it on my G981N from KTC to KOO to remove Korean bloat. But it was blocked some time in 2021 I think.

It was possible again with the System Shell Exploit (no Knox trigger), but it was patched I guess.
[Samsung Galaxy S23] nguyenlucky:
Also, one interesting thing I just observed. I got the S918B Australian model (XSA CSC), with single physical SIM and eSIM.

After changing CSC to XXV (or any markets with dual physical sims), it becomes S918B/DS.

I am ordering a dual sim tray from Aliexpress to check if this really enables dual physical SIMs for S91xB (no DS) models.
[Samsung Galaxy S23] Amd4life:
I have a SM-S918B on the way. What CSC do I flash for the US, Verizon?
[Samsung Galaxy S23] ChoSmile:
No way, only B countries CSCs.
[Samsung Galaxy S23] Mr.5g:
SEK Works
[Samsung Galaxy S23] gpap2004:
I confirm , SEK is working
[Samsung Galaxy S23] dr_adam:
Can anyone tell me how to use SamFW. I tried but it cannot read ADB although I enabled ADB in Developer options?
[Samsung Galaxy S23] ChoSmile:
Try these steps:

While 💻 and 📱 are connected.

via Phone app type:

*#0808#

select latest option, wait several seconds

then again select second option (MTP+ADB)

On phone will appear dialog to "check" and Allow ADB connection.
[Samsung Galaxy S23] dr_adam:
Thank you for the reply but when I did that I found that it is already on the second option. I pressed OK and I recieved no messages.
[Samsung Galaxy S23] ChoSmile:
Do EXACTLY what I wrote.

Change to last one, wait few seconds and then return to second. This change could trigger ADB recognition on PC.
[Samsung Galaxy S23] dr_adam:
Thank you very much ChoSmile. I kept trying and restarted my PC and it worked. Now changed to INS.
[Samsung Galaxy S23] kuschelhase_13:
Hi can I also change my branding from Telekom via samfw? the firmware currently says eux/eux/dtm, even though I flashed the eux software right where I got the device

so the question is to change it without deleting the device?
[Samsung Galaxy S23] Abu-khulzat:
Hi, tried SamFw on s23ultra and s22 ultra. It worked perfectly for both phones to change CSC to INS. No data loss.

Om s22 ultra I had XID (INDONESIA) before. So I tried to change to INS eventhough the ROM didn't have that CSC. It did work indeed.

However, I thought there might be issues in receiving OTA later, so decided to flash INS firmware on top via Odin. For some time INS CSC was there, but at some point there was a message that carrier update is there and the phone needs a reboot.

After the reboot CSC changed to XSG, bun no data loss was there.

I did one more try with SamFw, and the CSC is in INS again.

Very good app, thanks a lot to it's developers
[Samsung Galaxy S23] behemot24:
I changed the CSC to INS with SamFw and donated a coffee to the developer ☕ I encourage everyone who uses it to do so, hopefully this app will stay free and updated a long time 🤩
[Samsung Galaxy S23] kuschelhase_13:
wie kann ich mich auf eine csc aus deutschland freuen ich habe ein gerät von der telekom und möchte später in diesem jahr an der beta teilnehmen, daher ist es zwingend erforderlich, zur kostenlosen gerätesoftware zu gehen

wie mache ich das? bitte mit anleitung

Wechsel von eux/eux/dtm zu eux/eux/eux

Bei den Geräten handelt es sich um das s23ultra sm-s918B this is from telekom
[Samsung Galaxy S23] enebro77:
What about spay ?

I have an Active 4 and would like keep using Watch pay plugin-in ...
[Samsung Galaxy S23] efkosk:
it works, but I switched to SEK because in INS there is no ECG support in Watch5pro
[Samsung Galaxy S23] CMC_PUBLIKUM:
Wow, i didn't understand a thing of what was said here. 😮

I'll buy my first Galaxy (S23+ or Ultra) and would like to be able to record calls.

I have to search and read, as it seems, a lot! 😆
[Samsung Galaxy S23] mi.ku:
Have you succeeded in changing CSC in SamKEY paid app? On the S22 Ultra, the change went smoothly for me. On the S23 Ultra it repeats several times "Igniting RIL applet, Please wait 45 seconds...". After that, the process stops completely.View attachment 5832439
[Samsung Galaxy S23] efkosk:
It doesn't work with SamKey.

I used the free SamFW tool, it works like a charm
[Samsung Galaxy S23] maestrale:
hi, but the downloaded file seems contain tojans. is it safe?
[Samsung Galaxy S23] efkosk:
I downloaded from samfw.com and didn't get any trojans...
[Samsung Galaxy S23] jesper10c:
Thank you for this.

I flashed to THL on Sat, instantly got (and installed) the new firmware and then realised the issue with Google Wallet / Playstore certification.

I have flashed back to EUX meantime (so I can at least use Samsung Pay).

Is it better for me to stay on EUX and wait for the next firmware ? OR, should I change back to THL to await the next firmware release?
[Samsung Galaxy S23] ChoSmile:
There is no need to flash anything EUX and THL files are SAME on the same version. Just use SamFw to switch CSC.

When new firmware is released on the CSC that your phone is currently with, you can update OTA

or

for example if TIM (Italy) or any other (from same MultiCSC, in your case _OXM_ writen in HOME_CSC_OXM_.. filename) have newer than WE1 fw version - you can flash via ODIN (BL,AP,CP,HOME_CSC) - no data will be loast and Active CSC will stay (EUX or THL) and specific features available for this CSC will work.

or

switch to this CSC and OTA update

* * *

Firmware (files) have no differences for diffferent CSCs in same MultiCSC (for your phone case _OXM_ MultiCSC). Switch between CSC (and features depended on them) can be done via SamFw (feee) or Samkey (paid), or other method. OTA update come also when pushed for this exact CSC.
[Samsung Galaxy S23] jesper10c:
Thank you.

Poor wording on my part, meant change CSC rather than flash csc... It has been a few years since I did this!

So with THL though, I think I read the bootloader had changed when I downloaded the THL update on Saturday.

Will being on the EUX csc but the new THL firmware (and updated bootloader) still allow me to download OTAs on the EUX csc?
[Samsung Galaxy S23] ChoSmile:
Yes, if you are on EUX when new pushed for EUX - you'll able to update OTA.

On OTA it downloads differences between current and new firmware and appled.
[Samsung Galaxy S23] swsmily:
I read the whole threat, and it seams ILO is the best CSC for S23 Ultra. I will get my new phone tomorrow.

Till now I used S21 Ultra. In the past I read XID was the best CSC for S21 Ultra, so I flashed it with Odin on S21 Ultra.

Would it be the best way to flash XID to S23 Ultra to get all features and OTA (even OTA maybe some days later)?

What's the difference between ILO and XID?
[Samsung Galaxy S23] nguyenlucky:
You need to flash whole firmware to change to XID, not just changing CSC.

For ILO, if you are already on an OXM multiCSC firmware, changing CSC to ILO is enough.

I personally have never used XID. ILO has call recording, spam checker and works with ECG in galaxy watch?
[Samsung Galaxy S23] rek0:
The latest version of SamFw tool that's safe to use from virtual machine is 3.31 and I managed to change CSC with it on S23.

Versions from 4+ require updating firmware and from 4.3+ require installation and block running from virtual machine. VirusTotal flags installer as trojan from 10 vendors. It's a pity samfw.com went this way.
[Samsung Galaxy S23] Numicros:
Can you upload version 3.31 here? The latest safe I have is v3.1
[Samsung Galaxy S23] swsmily:
Thank you for your answer. I changed to ILO and everything seems to work.

On S21Ultra it was possible to change to XID by just flashing HOME_CSC. I didn't had to flash the complete firmware. This is why I was a little confused.

But now, everything is fine.
[Samsung Galaxy S23] nguyenlucky:
Technically just flashing the CSC file is fine, but you have to be sure every other component (BL, AP, CP) has the same version.
[Samsung Galaxy S23] rek0:
It's still on samfw android file host

SamFw_Tool_v3.31.zip | by Samfw Global for -All-General-Generic-

Download GApps, Roms, Kernels, Themes, Firmware, and more. Free file hosting for all Android developers.

androidfilehost.com

but you're right it's better to backup it in case they remove it.

I don't recommend running it outside VM and install samsung drivers separately. I used vmware player.
[Samsung Galaxy S23] IwaseKen:
I just downloaded SamFw Tool 4.7.1 from their homepage and scan by Windows Defender twice (zip and installer file) and got no infection warning. So maybe it's clean now.

I just changed csc to INS successfully, no need to reboot and no data loss
[Samsung Galaxy S23] nguyenlucky:
I still recommend version 3.31 (link above) though. Newer versions cram too many functions of other brands, and opens a webpage after each CSC change.

3.31 works just fine in S23U latest version, and still has enabling secret codes for Verizon phones.
[Samsung Galaxy S23] quentin1:
Hi guys! When I have this system version "

SAOMC_SM-S918B_OXM_EUX_13_0046

EUX/-/EUX/EUX " (Czech republic) What CSC should I use to make it safe, i.e. for call recording and Samsung pay to work? Thank you very much for the advice
[Samsung Galaxy S23] ChoSmile:
INS (India) or XXV (Vietnam)
[Samsung Galaxy S23] quentin1:
Thank you very much for your time! Both countries are very far from the Czech Republic, so hopefully everything will work as it should 🤣 if I understood correctly, it can be turned back at any time, am I right? So, if needed, I would roll back EUX , am I right?
[Samsung Galaxy S23] amlody:
I have the same problem. I'm on THL. Will changing to INS restore google wallet or it will not work because of different bootloader?
[Samsung Galaxy S23] ChoSmile:
Far or Close between conunties do not means anything.

Changing CSC - just ALLOWS (ENABLES/SHOW) and DISALLOWS (DISABLES/HIDE) some features/extras (like Call recording which is forbidden by Europen GPPR, or Samsung Pay which is officialy avilable only on some countries, where at least one local banks have contract to digitize their bank card). The firmware is THE SAME, languages are THE SAME. Everyting works same, all extras/features are part of the firmware all the time - just they are shown/hidden depending of Active CSC.

"TURNING BACK" is not correct, change to EUX is correct. Yes, changing can be done unlmited times... or at least until Samsung deside to disalllow this change.
[Samsung Galaxy S23] quentin1:
You are great, thank you so much again!!
[Samsung Galaxy S23] ChoSmile:
No, because on THL was realesed NEXT fimware ...WEA. (for other CSCs, at the meoment is still ...WD3 firmware) Change ti INS will shows/hides fieatues for INS, it will stay on ...WEA witth the problem with Google Play protect. Until Google update Play Protect and authorize ...WEA firmware OR until Samsung release next firmware (WEx, alter than A, or WFx) and this new firmware is also authorized by Google's Play Protect.

W - means 2023 (T 2020 , U 2021, V 2022, X 2024)

E - means April (A January... L December)

0...9,A...Z - firmware build in the month
[Samsung Galaxy S23] ucancallmeFisseDK:
I have chosen INS and I live in a European country.

I need to switch back to EUX in order to register my bank's debit card linked to MasterCard. In addition, I am forced to go via EUX to be able to register all my membership cards at various stores, etc.

When I then switch to INS, the only card I have visible is my debit card.

I can pay with the debit card via Samsung Pay, but not sure if linked membership benefits can be obtained (eg you can get a discount on certain foods with a linked membership card if I pay with my physical debit card).

So seems like it doesn't work fully with Samsung Pay after all...
[Samsung Galaxy S23] cestb44:
Hi,

i'm from France and i bought a S23 Ultra and Samsung wallet didn't work. I've understood that it's because my phone is not a french one.

I put the informations i have for this phone.

View attachment 5927671

I've seen that i should change the csc to be ale to use samsung wallet in france with samfw_tool. Which value shoold i choose to bo good?

Thanks in advance.
[Samsung Galaxy S23] prefor:
Can anyone please help me which CSC code I should pick in order for the Call recording etc to work?

I have Samsung S23 with;

SAOMC_SM-S911B_OXM_EUX_13_0046.

EUX/-/EUX/EUX (Sweden).

I've read that SEK enables Call recording and the other stuff. Should I use that or use another code?

Or should I use INS or ILO?

I honestly don't care about Samsung Pay (Spay), since I might use Google Pay instead.
[Samsung Galaxy S23] prefor:
Hi can you please check the previous post i did? :)

Ohhhh and also, does INS have OTA updates?

According to this YouTube video we won't have any OTA if we use INS, and we are forced to manually update our device everytime there is s new update, is it true?
[Samsung Galaxy S23] prefor:
If we pick ILO, does Google Pay work on that? :O
[Samsung Galaxy S23] lngl:
I changed EUX to THL, everything works but can't pay with Wallet, say it doesn't met security requirements.
[Samsung Galaxy S23] stryke-:
might be related to this:

https://xdaforums.com/t/s23-call-recording-possibility-of-changing-csc.4548227/post-88586875
[Samsung Galaxy S23] ChoSmile:
This video was for S22 series. (and was temporarily, not possible anymomore).

For S23 series INS, VVX, SEK, ILO, THL (not recommended at the mement).

I preffer and use INS on my S23 Ultra (everything works and updates).

(People asks SAME questions several times, refuse to read previous posts and expect personal answer.)
[Samsung Galaxy S23] prefor:
I'm sorry for asking, I just thought that everyone had different CSC codes depending on the model number :(

Why isn't INS, VVX, SEL, ILO, not recommendes at the moment?

I did read your previous posts, but couldn't find anyone with the same model number I have; SM-S911B. I just don't want to mess up my phone :(

Again I'm sorry for asking, I'm going to find the answer somewhere else If you don't want to help, i understand 🙏

Or just try out ILO, since I don't need Spay. I also read we need to block some numbers when using INS (like you wrote), but i think it will be better to just use ILO :D
[Samsung Galaxy S23] tahayparker:
i believe it was only meant for THL
[Samsung Galaxy S23] prefor:
Then if I pick ILO, i wouldn't have any problems?

I didn't think about getting THL, but what problems does THL have?
[Samsung Galaxy S23] ChoSmile:
Only THL not recommended. Others are OK.

Everything will work and update.
[Samsung Galaxy S23] stryke-:
If the first statement was true you wouldn't be asking.
[Samsung Galaxy S23] cestb44:
Ok, for my problem of samsung wallet, it's resolved.

I use Shield rebirth to modify country and samsung wallet works like a charm :)
[Samsung Galaxy S23] prefor:
Thank you very much!

But if we want to use INS, is it still required to block those 3 phone numbers so the India government doesn't get a text?
[Samsung Galaxy S23] GoJo ^^:
What is that text about..?
[Samsung Galaxy S23] prefor:
Here is the information about it:

https://xdaforums.com/t/s23-call-recording-possibility-of-changing-csc.4548227/post-88436909

https://xdaforums.com/t/s23-call-recording-possibility-of-changing-csc.4548227/post-88481455
[Samsung Galaxy S23] ChoSmile:
Described several times!

Law or regulation, not sure, where is described - in India requires when new sim is inserted to send once automatically sms with the IMEI. This sms is free for cards in india.

For foreign sim cards if these numbers are not blocked - just one international sms price will be added in the bill - nothing scarry.

INS is the only CSC that have all features (Call recording, Hiya CallerID and Samsung Pay) enabled - and I used INS on my phones. Everyone is free to choose ;)
[Samsung Galaxy S23] GoJo ^^:
I still dont get it haha. Are you saying SMS will be sent to these numbers from our side? Well, i changed to INS, didn't notice anything..
[Samsung Galaxy S23] redcom7:
Is INS csc working on s23+?

Do you know?
[Samsung Galaxy S23] ChoSmile:
All S23 Europe/International series (SM-S91*B)

S23 (SM-S911B)

S23+ (SM-S916B)

S23 Ultra (SM-S918B)
[Samsung Galaxy S23] redcom7:
On thank you for your answer..

I suppose that is already late since I have already THL CSC..

I HAVE to wait for the June update... Let's hope that google pay is going to work again or find a way to switch to INS... WHEN bootloader becomes 2 on INS...
[Samsung Galaxy S23] nguyenlucky:
Today I received the dual sim tray from aliexpress. It fits two sims perfectly on my single physical sim S918B Australian version.

With the original CSC (XSA), the second physical sim is not recognized. After changing to a CSC where dual physical SIMs S23s are sold (I used INS, you can try EUX, XXV, ...), and factory reset, the second sim is available and working normally. Device model is changed to S918B/DS.

This comment will be helpful for Australian users of Samsung devices with single physical SIM and eSIM, including S23, S22, Z fold 4, flip 4, etc

EDIT: The second physical SIM is disabled after completing the setup wizard, even with INS CSC. I will try to find a way to solve this, including downgrading to April update to use system shell exploit.

GitHub - wr3cckl3ss/system_shell_2: SMT Shell with a twist! Fully updated and upgraded.

SMT Shell with a twist! Fully updated and upgraded. - wr3cckl3ss/system_shell_2

github.com
[Samsung Galaxy S23] ChoSmile:
Have to wait... any new firwaware (after WEA) of any CSC

OR

Google Play Protect update

It will work... happans many times on different phones.

Even S22 have it on SEK but Play Protect was updated and S22 WE1 firmware become "certified" .

Check from time to time: Settings > About phone > Software information > Google Pay system update
[Samsung Galaxy S23] WhiteTree97:
You stupid or something? If you change your CSC to INS your phone will send an automatic SMS with your phone's IMEI to their government. There are 1.4 billion people living in India and their government is using that info to suppress high crime rate. Even if that happens it's not going to financially destroy you.
[Samsung Galaxy S23] JazonX:
Did the shell exploit work?

without changing CSC, Maybe you can add the call recording line to your existing CSC.

You need only this line in whatever your current active CSC

<CscFeature_VoiceCall_ConfigRecording>RecordingAllowed</CscFeature_VoiceCall_ConfigRecording>
[Samsung Galaxy S23] nguyenlucky:
Uh, I already got call recording with changing CSC. What I want now is dual physical SIMs, which is still disable. I guess it's tied to the original CSC, which is XSA and cannot be changed. Or something else in the EFS partition, I don't know.

I remember technicians used to be able to enable dual physical SIMs on some Exynos Korean models (S9, , Note 9, S10, Note 10), by using a Z3x box (which is very expensive for a normal user). But these devices require root and tripping Knox to install a ROM that supports dual SIM.

Also, there was a Note 9 N9600/SS (N9600 Latin American model, similar to HK version but with single SIM and single IMEI). When I checked that device, they somehow were able to duplicate the IMEI without tripping Knox, and it was running stock HK ROM with TGY CSC. Dual SIMs worked normally.
[Samsung Galaxy S23] ChoSmile:
SMS sent is hidden (invisible) not shown in Messeges app.

You can "see" only its price on next detailed bill (if postpaid sim) or balance drop (if prepaid sim).

(The price of international message of most mobile operators is a few tens of cents at most. It won't be a pain to die. This is one time sms if a new sim is detected.)
[Samsung Galaxy S23] ChoSmile:
Works on any CSC but phone must be ROOTED (which is not suitable for most users) and have to be applied after every firmware update.
[Samsung Galaxy S23] JazonX:
The Dual Sim feature is probably controlled by the factory.prop file in IMEI folder inside the EFS Partition;

ro.multisim.simslotcount=2

ro.vendor.multisim.simslotcount=2

persist.radio.multisim.config=dsds

If you can shell there, You might be able to create this file or add the lines.
[Samsung Galaxy S23] JazonX:
We are not talking about ROOT here on XDA, are we?

Big scary stuff. No way, no no. XDA is the site for the missing user manual samsung forgot to give.

FYI, If you read it once more -

It's about pushing the line via the shell exploit. to enable it on the current active CSC.
[Samsung Galaxy S23] nguyenlucky:
I tried the system shell (uid 1000), still cannot read the /efs folder (permission denied), let alone edit anything

cat build.prop denied also
[Samsung Galaxy S23] nguyenlucky:
Also I feel like EFS is not the problem, because the second SIM definitely works during the setup wizard. I can see VOLTE 2 icon and receive calls from the second SIM, , but not after completing the wizard.

the multisim count is like a hard limit, which would disable the second slot completely.