yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S10 Guides, News, & Discussion] waqqas.khokhar:
I had a similar experience.

My phone uses a multi CSC firmware (BRI Taiwan/TGY Hong Kong) and before discovering Samkey, I tried downloading the designated TGY firmware from Sammobile and after flashing it, my bars when down from 4/5 to 1 (not to mention, CSC stayed as BRI). After flashing it again with the designated BRI firmware, the bars returned to normal. I don't know if it was bad timing or what, but the size of both the firmware files appeared to be identical.

Anyway, to circumvent the problem, I used Samkey to change the CSC (from BRI to TGY) while I was still running the official BRI firmware, and I'm relieved to say that the reception did not suffer like it did with the TGY firmware.
[Samsung Galaxy S10 Guides, News, & Discussion] ampalos:
Ι think I had multi CSC before flashing but I dont know What I have now.

Could yoy please guide me to this procedure?
[Samsung Galaxy S10 Guides, News, & Discussion] waqqas.khokhar:
First:

1. Download and flash the firmware that shipped with your phone (i.e. the official firmware version.)

2. Verify that reception is as good as it used to be.

3. Then try changing the CSC to the one you want (do it at your own risk!) Using Samkey or any other working procedure.
[Samsung Galaxy S10 Guides, News, & Discussion] ampalos:
How do i find the official firmware that used to be on my phone?
[Samsung Galaxy S10 Guides, News, & Discussion] waqqas.khokhar:
In the attached screenshot, my model number is SM-N9750 and the original CSC is BRI.

If all the CSC codes are the same in your phone, then you are already running your original firmware.

Go to Settings, About Phone, Software Info

And you will see this same screen and can locate the corresponding Info for your device.

Then go to sammobile.com and look for the firmware for your model and the corresponding country (CSC).
[Samsung Galaxy S10 Guides, News, & Discussion] ampalos:
I checked in settings and mine is ATO , which corresponds to OPEN AUSTRIA in Samobile.

I flashed it but the problem remains the same .

Any thoughts?
[Samsung Galaxy S10 Guides, News, & Discussion] waqqas.khokhar:
Your signal bars are showing up as full, though?
[Samsung Galaxy S10 Guides, News, & Discussion] ampalos:
I have full bars only with data disabled or if i turn them on ,on 3g.

For example in my home I would get 3/4 of 4/4 bars with 4g+ and with volte active

Now i get full bars on 3g or h+ and 1/4 or 0/4 with 4g.

I tested at work and I got edge when up until the day before yesterday I would get 4g+ with full signal.
[Samsung Galaxy S10 Guides, News, & Discussion] waqqas.khokhar:
You already changed the CSC with Samkey, right?

I think you will have to use Samkey again to change it back :(
[Samsung Galaxy S10 Guides, News, & Discussion] davidenemo88:
Finally you changed the csc code? I have the same firmware tim .
[Samsung Galaxy S10 Guides, News, & Discussion] iocomxda:
What CSC can I switch to in order to enable native call Recording?
[Samsung Galaxy S10 Guides, News, & Discussion] duich:
THL for Example

Gesendet von meinem SM-G973F mit Tapatalk
[Samsung Galaxy S10 Guides, News, & Discussion] mishaelwillo:
Samkey credits

Samkey credits available at the best prices from animeman65 on eBay. Here is a direct link

https://www.ebay.com/itm/254377000336

---------- Post added at 03:44 AM ---------- Previous post was at 03:04 AM ----------

https://www.ebay.com/itm/254377000336

---------- Post added at 03:51 AM ---------- Previous post was at 03:44 AM ----------

Direct link for samkey from eBay

https://www.ebay.com/itm/254377000336

---------- Post added at 03:52 AM ---------- Previous post was at 03:51 AM ----------

Get samkey from eBay here

https://www.ebay.com/itm/254377000336
[Samsung Galaxy S10 Guides, News, & Discussion] DhA4G:
Hi All,

Has anyone tried this or know of a success story with Galaxy S10 5G (SM-G977N) the korean version to (SM-G977B)..

Regards
[Samsung Galaxy S10 Guides, News, & Discussion] DhA4G:
Galaxy S10 5G (SM-G977N)
[Samsung Galaxy S10 Guides, News, & Discussion] orlandson:
This model isn't at Samkey supported devices list.

http://samkey.org/supported.html
[Samsung Galaxy S10 Guides, News, & Discussion] Gdefreitas:
Quick question about using Samkey. How many credits does it take to change the CSC on G975F model? And do you get OTA updates going forward for the region the CSC is changed to?
[Samsung Galaxy S10 Guides, News, & Discussion] vysus:
Edit
[Samsung Galaxy S10 Guides, News, & Discussion] Nettwerk:
As I remember two keys charge to change CSC.
[Samsung Galaxy S10 Guides, News, & Discussion] wadialdoor:
I have UK unbranded S10 I wanted to change the csc to DBT so I can get updates faster and get the android 10 beta .

I bought 3 samkey credits from the ebay seller , the csc changed to DBT/DBT,DBT/BTU but as soon as I put my Uk sim card It asked to restart the phone the csc changed to DBT/XEU,XEU/BTU .

So now I do not know if I will receive the DBT or BTU updates .

by the way you can buy the samkey credits cheaper from the same ebay seller direct from his site at https://andtron.com/brand-services.php?id=7 .
[Samsung Galaxy S10 Guides, News, & Discussion] bOkz:
Hey guys,

3 questions (which is kinda related to each other)

1. While using this Samkey tool, do you need to be connected to the internet? or will it still work when you are offline?

2. If you need to be connected to the internet while updating the CSC using Samkey, would you know which kind of information this tool sends to the server? and would you know the ip address of this server?

3. Say everything went fine and you've successfully updated your CSC code, specifically for Samsung Pay, will i loose my current Samsung points? also will i get the offers of the country to which firmware i am currently using? (Bought my S10+ in Singapore - getting Samsung offers from Singapore, but i now live in Sydney - already flashed XSA firmware and would want to get the Samsung Pay offers here in Australia and be able to use Samsung Pay for bus and train rides)

Thanks!
[Samsung Galaxy S10 Guides, News, & Discussion] bOkz:
Well i am happy to report that it worked! My Samsung Pay now shows Australia offers and i was able to successfully load my cards, though i haven't really tried it yet. Tried a couple of restarts and my CSC sticks XSA/XSA,XSA/XSP - (i am assuming that we really cant change the last CSC (XSP) code, right?).
[Samsung Galaxy S10 Guides, News, & Discussion] Alex93917:
Confirm samkey is working great.

Passed from BTU to XEF without problem ! I can now use Samsung Pay without customization and bypass...
[Samsung Galaxy S10 Guides, News, & Discussion] ArchonX:
Works flawlessly on my g973f, switched from DTM to DBT. Now 10 Beta is possible, just downloading
[Samsung Galaxy S10 Guides, News, & Discussion] redsnake80:
Samkey works perfect in my S10.

I have changed CSC TPA to DBT en 2 minutes (2 credits).
[Samsung Galaxy S10 Guides, News, & Discussion] BrauliX:
But the last code is changed too or remains the original?
[Samsung Galaxy S10 Guides, News, & Discussion] redsnake80:
Remains the original. In my case DBT/DBT,DBT/TPA
[Samsung Galaxy S10 Guides, News, & Discussion] betovanbuuren:
If i want to change my note 10+ CSC (SM-N975F) how many credits should i buy? On the page states 6, but is that correct? Also any recommendation where to get the best deal?

---------- Post added at 12:54 AM ---------- Previous post was at 12:19 AM ----------

Did you flash the OXM firmware, before changing the CSC?

If i have TPA/TPA/TPA/TPA can I just login to samkey and change csc? Or do i need to first flash any specific firmware before?

My model is SM-N975F Dual Sim variant, im in Mexico but for some reason the CSC was set to TPA (Panama) ao i want to change it to MXO to have Samsung pay working
[Samsung Galaxy S10 Guides, News, & Discussion] s3mtex:
Hi. I confirm that OXM CSC and THL SIM not working.

On my old S8 worked flawlessly.

I've changed the firmware from Orange Romania to Romania Unbranded to get OXM CSC.

Now I have BTU/BTU/BTU/ORO. Factory reset with THL SIM dosen't do anything.

On my S8 now I have THL/ROM/CNX at CSC. Call recording and anti spam work. (Same THL SIM card).

About Samkey... I was at one step to use Samkey, but I'm concern about virus alert as "Trojan:Win32/Conteban.B!ml" (crypto miner) gived by Microsoft Security. I saw that someone said is false positive, but how can you be sure? That won't be a problem on PC, I can solve that, but how it works on phone CSC level? What changes make in the phone. Maybe I'm a bit paranoid but I believe that it is possible to change something at rotkey level without actually root the phone or to trick Knox.

Anyone else sharing my concern? Did anyone who changed the CSC noticed anything different after used Samkey, like battery life or performance issues?
[Samsung Galaxy S10 Guides, News, & Discussion] redsnake80:
Hi, my firmware is OXM. You can check "Service provider SW ver.".

If say OXM, you can change CSC to MXO.

After change: MXO/MXO,MXO/TPA

The last TPA never change but your firmware is MXO
[Samsung Galaxy S10 Guides, News, & Discussion] betovanbuuren:
Can you let me know where you bought the samkey code reader credits to change CSC?
[Samsung Galaxy S10 Guides, News, & Discussion] redsnake80:
In eBay, seller natahh01 speak spanish. In the page has a telephone number for Whatsapp
[Samsung Galaxy S10 Guides, News, & Discussion] andriy416:
Thank you for the explanation about the 4th field, in my case it's 3rd field as my phone has only 1 sim card. I bought an unlocked Samsung Note 10+ from Samsung USA, and I flashed Telus (TLS) firmware and used Samkey to change the CSC, so now it shows TLS/TLS/XAA
[Samsung Galaxy S10 Guides, News, & Discussion] betovanbuuren:
Thanks already bought 3 credits, i guess for changing CSC i only need 2 right?

Last part would be to enable debugging in developer options, remove any screen lock and connect to computer with samkey open and phone in lockscreen, then type MXO on the change CSC field and click "change csc button" ? does the phone restarts or it does everything in the background?
[Samsung Galaxy S10 Guides, News, & Discussion] redsnake80:
In my case with S10, i needed 2 credits. You need enable debugging in developer options. I did not eliminate lockscreen.

The phone restarts 1 time. First i click in "I read info ADB" to verify the connection.
[Samsung Galaxy S10 Guides, News, & Discussion] sivuha0101:
Has anyone wondered how samkey does that? I am 99% it sends some AT command, but so far I was only able to do that with combaintion filed flashed on the phone, and this tool somehow managed to send it to the normal firmware. Does some one have any idea how? I can see in the log that it sets up debbuging level to high, but i don't know what for.
[Samsung Galaxy S10 Guides, News, & Discussion] betovanbuuren:
Did you lose your data when phone was restarted? or everything stays in there?
[Samsung Galaxy S10 Guides, News, & Discussion] redsnake80:
No, nothing. Only changed CSC
[Samsung Galaxy S10 Guides, News, & Discussion] betovanbuuren:
Confirmed working on a note 10+ SM-N975F to change CSC, it require 2 credits, no wipe of data, everything remains the same
[Samsung Galaxy S10 Guides, News, & Discussion] redsnake80:
Perfect! I'm glad I helped :D Greetings
[Samsung Galaxy S10 Guides, News, & Discussion] betovanbuuren:
Thanks my friend! :):good:
[Samsung Galaxy S10 Guides, News, & Discussion] ebivkcalb:
edit
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
Same, even though my phone has the CSC I want, I am still curious to figure out how they did it. I have been following posts in Naver but to no avail, is there any sort of logging tool to log USB serial commands?
[Samsung Galaxy S10 Guides, News, & Discussion] sivuha0101:
That's exactly what I was thinkin about. Maybe real term has this option? I will dig into it.

I've been thinking today. If it was just a simple command it would work for all the phones, but there was a case when this tool wasn't supporting some of the phones. And I found an old topic where you could change csc using some adb commands and changing few partitions, but you needed a special file for each phone.

Maybe it works the same way.
[Samsung Galaxy S10 Guides, News, & Discussion] ebivkcalb:
guys at beginning i had pls pls pls pls csc, i flashed dbt multi oxm soft and ended up with btu btu btu pls csc. after that i used samkey and went from btu btu btu pls to xeo xeo xeo pls. and now on phone info it says my firmware csc is btu but active csc is xeo (as it should) is it normal? Just in case, if ill have to flash firmware someday with lets Say odin, which oxm version should i install to keep my xeo csc? firmware csc or active csc? btu or xeo? should i use csc or home csc? sorry for so many questions but i hope someone can make it clear for me xP
[Samsung Galaxy S10 Guides, News, & Discussion] LisekDH:
Where can i buy only 2 credits? For change CSC for Exynos S10+?
[Samsung Galaxy S10 Guides, News, & Discussion] naudmick:
Why is everyone happy to pay for something that should be free? I do not understand that no one has yet found how samkey processes and make the csc procedure free. To believe that all the mo of likes to pay uselessly.
[Samsung Galaxy S10 Guides, News, & Discussion] billa:
Has anyone tried this method on the S10?? I would try it, but don't have an S10. ;(

While that's for the S9, it doesn't hurt to try it anyway.

https://xdaforums.com/galaxy-s9-plus/how-to/guide-how-to-change-s9-s9-csc-model-csc-t3870836
[Samsung Galaxy S10 Guides, News, & Discussion] ebivkcalb:
guys just what i thought now... isnt samkey Just using high debugging to prevent knox flag change, then edit our csc in efs partition to make it bound to Our imei (which makes csc change permanent so you dont have to use it everytime) and then fast unroot phone without triggering knox... So first reboot is after efs files edition and second reboot for setting debugging to normal Mode(unroot)... that would explain why it doesnt wipe data and makes csc change permanent...

im not dev expert so it might be bullsh#t what i wrote but in my knowledge it makes sense
[Samsung Galaxy S10 Guides, News, & Discussion] sivuha0101:
You can't flash combination file on S10. Neither there is a way to send AT commands (atleast the ones that change csc) in normal mode.
[Samsung Galaxy S10 Guides, News, & Discussion] ebivkcalb:
so how could it be possible then? whats your thoughts
[Samsung Galaxy S10 Guides, News, & Discussion] opssemnik:
The S10 blocks booting into factory mode, the combinations file do not work
[Samsung Galaxy S10 Guides, News, & Discussion] sivuha0101:
Some ADB commands changing partitions, or AT commands. At the beginning I was leaning more towards AT commands, but now I think they use ADB. Someone would need to get a port spy software to see what commands are being send to the phone while SamKey is changing the csc.
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
While searching on Naver, I found this, maybe someone with more information can use this to help?

https://m.cafe.naver.com/refurbishfactory/181555
[Samsung Galaxy S10 Guides, News, & Discussion] mayfly007:
Worked for me too. I had UAE Galaxy s10+. Flashed Australian XSA firmware downloaded from sammmobile. Installed Samkey and bought samkey credits from ebay. Ran Samkey and put in my desired csc (XSA) and it worked just like that. Now i got caller id and spam protection on phone app. Although i don't use it Samsung pay also became available whereas before it wasn't. In "about phone" the United Arab Emirates text vanished.
[Samsung Galaxy S10 Guides, News, & Discussion] sivuha0101:
I don't get why people keep paying for samkey for G970 and G975 while the problem is only with G973
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
The problem is with all new Samsung phone since S10, include S10e S10 S10 Plus Note 10 and Note 10 Plus

---------- Post added at 09:01 PM ---------- Previous post was at 08:27 PM ----------

Sorry, link is

https://m.cafe.naver.com/refurbishfactory/181555
[Samsung Galaxy S10 Guides, News, & Discussion] sivuha0101:
No it is not. I am debranding dozens of s10+ and s10e as we speak, and I am using just Odin and simcard for it. The only phones I have problem with are G973F

And Note are not a problem neither
[Samsung Galaxy S10 Guides, News, & Discussion] speszial:
Helo

I have s10 plus from Vodafone I want to change to general csc UK do I need to flash firmware with UK csc first? My phone doesn't have one. Will that delete my data from the phone?
[Samsung Galaxy S10 Guides, News, & Discussion] orlandson:
Yes, but flash with Home_CSC and you will not lost any of your data. After flash change CSC with Samkey. Nothing will be deleted.
[Samsung Galaxy S10 Guides, News, & Discussion] speszial:
Are you 100% sure the one with "home"? Because I read somewhere to use the one without "home" I'm so confused now. And where I can get that firmware for UK?
[Samsung Galaxy S10 Guides, News, & Discussion] Spyritus:
The ROM that changes my CSC to BTU is already multi CSC

And Phone info displays them so they are included in the ROM :(
[Samsung Galaxy S10 Guides, News, & Discussion] inferno2:
the same situation of me, flash with FTM rom and my CSC is FTM and flash with multi CSC rom (with XEF) and my CSC is BTU
[Samsung Galaxy S10 Guides, News, & Discussion] cline2:
I am in USA using TPA should I change something different than TPA for USA at&t? Or does it matter?
[Samsung Galaxy S10 Guides, News, & Discussion] devz3r0:
You probably have purchased your Samsung Galaxy S10+ from the same eBay seller as I did (never-msrp) - [itm/192828272845] or seller "sobeonline1". Both of these people have been acquiring their phones early from the Panama, Central America region to make a quick buck re-selling the Exynos version before the Snapdragon version was available in the USA.

To answer your quesiton: Depending on your carrier (if it supports VoLTE / WiFi Calling) you may want to flash another region. As far as I know (if anyone knows otherwise please correct me if I'm wrong), BTU, XEU, and the non-branded carrier CSCs do not support these features. I know that my carrier (AT&T) does support VoLTE, but the TPA (Panama) Rom / CSC does not.

Does anyone happen to know which UK CSCs support VoLTE & WiFi Calling? (EE / H3G / O2 / Vodafone etc.). I, myself am looking to enable VoLTE on my phone.
[Samsung Galaxy S10 Guides, News, & Discussion] cline2:
Yeah got it from eBay by never-msrp. I have purchased phones from that seller in past with no problem. I don't use VoLTE or Wifi Calling because I am deaf and don't talk on phone. LOL.
[Samsung Galaxy S10 Guides, News, & Discussion] dymeq23:
I've the same problem - I flash multi-csc (I want XEO) and I got BTU (G973F).

Tip: I have G970F and G975F. On this phones, works old method with flash with firmware + sim card... Doesn't work on G973F
[Samsung Galaxy S10 Guides, News, & Discussion] inferno2:
Nobody have solution to test for change the CSC on multi CSC firmware?
[Samsung Galaxy S10 Guides, News, & Discussion] VICosPhi:
Maybe once ROOT is achieved, this will be possible. I am waiting for [MENTION=4107827]TEKHD[/MENTION] to create USA TMB flashable CSC package.
[Samsung Galaxy S10 Guides, News, & Discussion] Moli1987:
nobody with a solution? I could change mine to AUT/AUT,AUT/THL but i would like to have full AUT/AUT,AUT/AUT. I bought mine also in Thailand but im using it in switzerland now. Originally it was THL/THL,THL/THL. Would be nice to know how to achieve this on the new galaxy S10+
[Samsung Galaxy S10 Guides, News, & Discussion] ru_dimka:
For what?
[Samsung Galaxy S10 Guides, News, & Discussion] Intratech:
BTU, XEU, H3G for sure.
[Samsung Galaxy S10 Guides, News, & Discussion] Moli1987:
To change the csc on a multi ROM.... I would like to change to AUT/AUT,AUT/AUT but i could change only to AUT/AUT,AUT/THL
[Samsung Galaxy S10 Guides, News, & Discussion] Brownie2k:
Hey guys,

I've got an S10+ that i got via EE Upgrade in the UK. Came with the EVR CSC so i decided to flash the multi-CSC firmware to get it to BTU. Instead, when checking with Samsung Phone Info, it now says that my phones Firmware CSC is XEF (France) and active CSC is XEU. What i'm confused about is why would the firmwares CSC be France when my phone was bought in the UK??
[Samsung Galaxy S10 Guides, News, & Discussion] ru_dimka:
Sometimes "Samsung Phone Info" shows wrong information. Just check your CSC in the phone settings.
[Samsung Galaxy S10 Guides, News, & Discussion] Brownie2k:
Phone settings says XEU/XEU XEU/EVR. I'm guessing XEU is open Europe CSC. Would have preferred BTU, but i guess it is what it is
[Samsung Galaxy S10 Guides, News, & Discussion] Moli1987:
Can somebody confirm or explain whats possible to change?

My s10+ which i bought in Thailand was originally THL/THL,THL/THL in the settings. Now i have changed to multi CSC Rom and i have AUT/AUT,AUT/THL. Is that the maximum i can change to? I would like to get rid of THL, cause on older galaxy devices i thought i changed everything and there was nothing from THL anymore.

Did that change??? Can this not be changed anymore? Or just not at the moment?
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
So at the present moment there is still no way to select a CSC out of a multi-csc firmware like OXM? I have also looked at the combination file+serial terminal method but it seems like there are also trouble flashing combination files on to the S10s?
[Samsung Galaxy S10 Guides, News, & Discussion] wire.rat:
Hi, do you know how did you get XEU instead of BTU? I have thought that the default is BTU, did you flash with or without SIM card? Thanks!
[Samsung Galaxy S10 Guides, News, & Discussion] henklbr:
You can't change the last THL to AUT -> That's the product-code!
[Samsung Galaxy S10 Guides, News, & Discussion] filipe.dultra:
has anyone found a fix for this? ive been trying to change the CSC of my s10+ to ZTO but it doesnt work. Tried with 2 different updates (wiping everything, with brazilian SIM card inserted, but nothing changes) this is frustrating because i can change the csc to a french firmware just fine.. but not the brazilian one.. why is this happening?
[Samsung Galaxy S10 Guides, News, & Discussion] ebivkcalb:
you have to flash oxm firmware with csc file. not home csc... even samkey help tells you to do that. So Yes you have to wipe your data but you can do a backup, flash with csc file, change csc with samkey and then restore your backed up data and youll be fine. thats what i did and i had no problems.
[Samsung Galaxy S10 Guides, News, & Discussion] orlandson:
Yes, I'm 100% sure.

If you flash the CSC file, it will perform a factory reset and wipe all data.

If you want to keep you phone's data and settings, you should use the HOME_CSC file.
[Samsung Galaxy S10 Guides, News, & Discussion] SpideRMaN-17:
100% correct
[Samsung Galaxy S10 Guides, News, & Discussion] billa:
Simply use Samsung Smart Switch to back up everything (including settings) onto an SDCard, flash it with non-home_CSC, then just restore it from the SDCard. No need for SamKey, plus you get a cleaner system than flashing over the old one. ;)
[Samsung Galaxy S10 Guides, News, & Discussion] speszial:
This is what I found on xda so I need to use csc first to switch from Vodafone firmware to general one "You must wipe your data when switching from a carrier firmware to an unbranded firmware. Once you are on the unbranded OXM firmware, you can use HOME_CSC to upgrade without wiping data."
[Samsung Galaxy S10 Guides, News, & Discussion] Gdefreitas:
Is it necessary to flash the official firmware before performing the CSC change?