SM-G991N (korean S21 5G) not compatible with esim - Samsung Galaxy S21 Questions

I just bought S21 from Korea, and it's not compatible with esim. Is there any way to make it compatible with esim? I already tried samfw (to change csc to INU). will changing csc help? if not, will rooting help?

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How to Change CSC S9+ ?

Hi guys
I recently flashed XXV(Vietnam Region) rom but CSC didn't changed!
can I change it without root? any way?
my info is in attachments
Please Help
I am having the same issue. Flashed XSA (Australia region) but CSC is AFG (Afghanisatan). unable to change after multiple attempts with different firmwares. Also Tried TEL (Telstra) but no luck.
You must hard reset after install the new rom. This way the CSC will change.
DJC_SP said:
You must hard reset after install the new rom. This way the CSC will change.
Click to expand...
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But how can it be changed from US Unlocked XAA to Mexico's Telcel TCE?
I tried factory reset a couple of times but still XAA.
Mexico's S9+ variant is Exynos and US unlocked is Snapdragon.
jorgemuela said:
But how can it be changed from US Unlocked XAA to Mexico's Telcel TCE?
I tried factory reset a couple of times but still XAA.
Mexico's S9+ variant is Exynos and US unlocked is Snapdragon.
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Click to collapse
You should install the correct firmware with the CSC that you want and then hard reset.
jorgemuela said:
But how can it be changed from US Unlocked XAA to Mexico's Telcel TCE?
I tried factory reset a couple of times but still XAA.
Mexico's S9+ variant is Exynos and US unlocked is Snapdragon.
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Click to collapse
Once the CSC code is set to XAA it won't change because the US model would recognize the SIM as international
kevindevonwilliams said:
Once the CSC code is set to XAA it won't change because the US model would recognize the SIM as international
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In the past there have been ways to allow a US CSC to be flashed on a exynos device. Usually flashed via twrp ..havent see this yet for the S9 though.
sent from my Exynos S9 plus, Pixel 2 XL or Note FE
milad.pro said:
Hi guys
I recently flashed XXV(Vietnam Region) rom but CSC didn't changed!
can I change it without root? any way?
my info is in attachments
Please Help
Click to expand...
Click to collapse
I think that you can try flashing a single CSC firmware, hard reset and after that the carrier firmware that you want and then reset with your simcard inserted in the phone. As far as i know XID is a single CSC firmware. Download it using Samfirm app (select model SM-G965F and Region: XID) and also when flashing with Odin use CSC and not Home_CSC. Post the result after please.
jorgemuela said:
But how can it be changed from US Unlocked XAA to Mexico's Telcel TCE?
I tried factory reset a couple of times but still XAA.
Mexico's S9+ variant is Exynos and US unlocked is Snapdragon.
Click to expand...
Click to collapse
Where did you get an Exynos S9+ in Mexico?
How to change CSC4 (purchase region)?

Changing CSC of an unlocked S9+ G965U

Hello everyone. I'm struggling to find a starting point on how to change the csc of my phone. I haven't changed a csc before and there are lots of conflicting info on the forum. I'm familiar with Odin and flashing ROMs in general.
I bought my phone from the US, and it has the AT&T G65USQU1ARBI (unlocked) software, however, I live outside the US and I want to change the CSC. I want Samsung Pay to show me offers from my region.
Where to start?
Should I flash a different ROM straight away? and would that change my CSC? Obviously, I don't want any of the AT&T features, so I don't mind changing the ROM.
Is there a ROM that I can flash that supports multi-CSC options? The Samsung variant in my region is Exynos, so can I still change the CSC to my region with my Snapdragon S9+ ?
Thanks guys.
EDIT: Just learned about the snapdragon root dilemma. So I guess the root option will be dismissed.
I bought a s9 + G965F with csc Singapore but I use in Brazil 4G network is ok but I can not use voLTE and Wi-Fi calling can someone help me? version of the OXM operator.

G9650 single sim on binary mode say G9650/DS

Hello friends, I recently change the CSC flashing combination firmware.
My s9 plus its a single sim G9650 from ATT mexico but when the phone boot on binary mode onscreen say G9650/DS its normal? or its a dual sim version disguised by the carrier to a single sim?
thanks
Probably from the firmware. It most likely came from a DS model...
By the way, do you know if the Panamanian version can have its CSC change as well?
Sent from my SM-G9650 using Tapatalk

[HELP] Flashing my Galaxy S21 5G Korean Variant SM-G991N (CSC: LUC) to SM-G991B

Hello, I'm newbie and I just want to ask if I can flash another Firmware on my device, I'm currently on PH where s21 being sold here is SM-G991B (CSC: XTC). I want to remove the bloatwares and some samsung apps are still on Korean Language. I'm using an SM-G991N Model with LUC CSC. If possibly, I want to change it to XTC CSC, I already tried using Samkey but it failed. Should I flash the whole firmware SM-G991B on my device? It's same processor as my Korean Variant phone which is Exynos.
Hope anyone can help me. Thank you!
You will trip Knox if you try that.
See https://forum.xda-developers.com/t/...lobal-or-nordic-on-s21.4572237/#post-88398865
traman124 said:
You will trip Knox if you try that.
See https://forum.xda-developers.com/t/...lobal-or-nordic-on-s21.4572237/#post-88398865
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It there any other way? coz Korean variant updates takes so long. OTA/Smart Switch I still don't receive the latest security updates.
Not as far as I know... Unless you want to use a custom ROM.

Question CSC change or firmware options for S918N (Korean) S23 Ultra?

I bought a S918N in Korea before realizing Samsung Pay doesn't work in the USA. I've already tried changing the CSC but it fails whether I choose "phone supported CSC" or "or your choice". Anyone know why it fails? What are my options for getting Samsung Pay to work?
bryanhayn said:
I bought a S918N in Korea before realizing Samsung Pay doesn't work in the USA. I've already tried changing the CSC but it fails whether I choose "phone supported CSC" or "or your choice". Anyone know why it fails? What are my options for getting Samsung Pay to work?
Click to expand...
Click to collapse
US CSC is not supported by this model and will never be

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