Develop Bugs

[I747M] Change CSC

Hello everybody,
I have a samsung I747M from Canada. I'm french and I'm using it here.
Data connexions are only in EDGE (the same as 2G). I want to have 3G data connexions. All the settings in the NPA are good.
I think the problem come from the CSC which is still the one attached to Canada (BMC).
All the firmwares are for Canada. I want to change the CSC (BMC now) to XEF (the one for France).
Does someone have an idea to fix this situation ?
Thank you and Merry Christmas !
PS : Sorry for my english...

You might have to carrier network unlock the phone.

Does the i747m support the carrier's 3g frequencies?

StoneyJSG said:
You might have to carrier network unlock the phone.
Click to expand...
Click to collapse
Thank you for your answer but my phone is already unlocked.
I'm using it in France with a local operator (Bouygues). Data connexions are only in 2G and not in 3G.
I think if I will change the CSC it will be good

audit13 said:
Does the i747m support the carrier's 3g frequencies?
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Click to collapse
I think so.. How can I know pleas ?
In network settings there are GSM, LTE etc

You can check here: http://willmyphonework.net/

audit13 said:
You can check here: http://willmyphonework.net/
Click to expand...
Click to collapse
I've checked and it works in 3G

I don't think it is a firmware problem because I took my s3 to London a couple of years ago. It was running stock bell firmware, network unlocked, and I was able to get 3G data connections without doing anything to the stock rom. Changing the Csc should not make a difference.

Changing CSC to U1 for USA's Samsung Pay?

I'm trying to get the USA version of Samung Pay working on my SM-G9600 (International Unlocked Snapdragon S9). Unfortunately, my active CSC is currently set to TTT (Trinidad/Tobago... not sure how, I flashed a CHO firmware, haha), so even when I have my Samsung Account and AT&T SIM card inserted, opening S-Pay just gives me an error, "Unable to connect to Samsung Pay temporarily. Try again later."
To remedy this, I think my best option would be to flash a new CSC from a different region? However, I don't really understand how Samsung's CSC system works; I've tried researching it, but I haven't found anywhere that really explains in detail what CSC actually does, single-CSC vs multi-CSC, etc... Can anyone give me a summary of all the major parts? Or at least point me towards a good resource to learn about it?
However, I have more practical, direct questions:
Could I flash my G9600 with just the CSC (or better, HOME_CSC) of a USA Snapdragon variant, like the U1? Or would that break things, since it's a different model number? Would that be likely to get me a working Samsung Pay?
I guess I should flash the CSC (or better, HOME_CSC) of a different region that also carries the G9600? Of the regions that carry the G9600 (China/Latin America), I believe the only countries that support Samsung Pay are Brazil, Mexico, and Puerto Rico (and Hong Kong, but only with Hong Kong banks? I think.) If using a CSC from the US is a bad idea, which of these would be best? I'm guessing Puerto Rico, since it's most closely related to the USA, but the only PCT firmware on Updato currently has the v1 bootloader, but I'm already on the v2 bootloader (2ARE6), so I don't think I can use it.
I would guess that the next best option would be Mexico, since it's pretty close to the USA, and I see a firmware with the v2 bootloader for it on Updato. However, I'm not familiar with that region code. Is MXO a specific carrier in Mexico? Or is it the carrier unlocked firmware, like U1 is in the US?

MXO is unbranded bro and working samsung pay.
I wanted flash a specific carrier csc but I couldn't set TCE always appers CHC.

nelsyv said:
I'm trying to get the USA version of Samung Pay working on my SM-G9600 (International Unlocked Snapdragon S9). Unfortunately, my active CSC is currently set to TTT (Trinidad/Tobago... not sure how, I flashed a CHO firmware, haha), so even when I have my Samsung Account and AT&T SIM card inserted, opening S-Pay just gives me an error, "Unable to connect to Samsung Pay temporarily. Try again later."
To remedy this, I think my best option would be to flash a new CSC from a different region? However, I don't really understand how Samsung's CSC system works; I've tried researching it, but I haven't found anywhere that really explains in detail what CSC actually does, single-CSC vs multi-CSC, etc... Can anyone give me a summary of all the major parts? Or at least point me towards a good resource to learn about it?
However, I have more practical, direct questions:
Could I flash my G9600 with just the CSC (or better, HOME_CSC) of a USA Snapdragon variant, like the U1? Or would that break things, since it's a different model number? Would that be likely to get me a working Samsung Pay?
I guess I should flash the CSC (or better, HOME_CSC) of a different region that also carries the G9600? Of the regions that carry the G9600 (China/Latin America), I believe the only countries that support Samsung Pay are Brazil, Mexico, and Puerto Rico (and Hong Kong, but only with Hong Kong banks? I think.) If using a CSC from the US is a bad idea, which of these would be best? I'm guessing Puerto Rico, since it's most closely related to the USA, but the only PCT firmware on Updato currently has the v1 bootloader, but I'm already on the v2 bootloader (2ARE6), so I don't think I can use it.
I would guess that the next best option would be Mexico, since it's pretty close to the USA, and I see a firmware with the v2 bootloader for it on Updato. However, I'm not familiar with that region code. Is MXO a specific carrier in Mexico? Or is it the carrier unlocked firmware, like U1 is in the US?
Click to expand...
Click to collapse
Did you end up flashing the MXO ROM? If you did, do you still have dual SIM capability after that? Thanks!

sentron said:
Did you end up flashing the MXO ROM? If you did, do you still have dual SIM capability after that? Thanks!
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Click to collapse
Yes! Dual SIM is not affected by which SM-G9600 firmware you flash. The thing to be wary about would be if you tried to flash a different model's firmware to it (e.g: G960U), since there is no Dual SIM among the U models. Although if I had to guess, the Dual SIM settings would probably still work fine (assuming the U firmware didn't brick it otherwise).

Have you found a fix for this problem, are you able to use samsung pay here in US?
Did you change the csc only or flash the whole frameware?
Thank you in advance.

I'm also wondering about flashing just the CSC on a dual SIM device. I have a Note 9 dual SIM that will not get Volte, so I was thinking about flashing the U1 CSC to see if it would fix it. Does anyone have any advice?

You guys are so good at this compared to me. I felt like a noob ?.
I posted a question a few days back but not getting a meaningful answer. The goal is to do minimal changes but get Samsung Pay working.
https://forum.xda-developers.com/galaxy-s9/help/sm9600-want-to-flash-firmware-samsung-t3837428

Anyone found a fix for Samsung pay?

N976B firmware question

Hey guys...I have a Note 10 plus 5G from UK, but I am using it in another country (Romania). We have 5G here as well, so this is not the problem. The firmware on the phone is not the latest, but it doesnt find the new one via OTA. I checked the firmware site and there are the August one there. So the question is, if I upgrade via Odin, with one of those FW, will it lock to an UK carrier? Or a German one, or other? Or will it remain unlocked and no issues there?
Thanks!

leoking3 said:
Hey guys...I have a Note 10 plus 5G from UK, but I am using it in another country (Romania). We have 5G here as well, so this is not the problem. The firmware on the phone is not the latest, but it doesnt find the new one via OTA. I checked the firmware site and there are the August one there. So the question is, if I upgrade via Odin, with one of those FW, will it lock to an UK carrier? Or a German one, or other? Or will it remain unlocked and no issues there?
Thanks!
Click to expand...
Click to collapse
If the phone is unlocked. The firmware you install on it will not lock it..

west2cool said:
If the phone is unlocked. The firmware you install on it will not lock it..
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Click to collapse
Indeed, thank you, did that, all went fine.

I have a similar question. I have a EE unit note 10+ 5g and was wondering if flashing the UK non ee version with a different CSC from samobile will actually change my phone's CSC or will it still detect it's a ee device and still say EVR/EVR/EVR under service provider information. thanks

vimto25 said:
I have a similar question. I have a EE unit note 10+ 5g and was wondering if flashing the UK non ee version with a different CSC from samobile will actually change my phone's CSC or will it still detect it's a ee device and still say EVR/EVR/EVR under service provider information. thanks
Click to expand...
Click to collapse
If you use the multi-csc OXM it will change as per below.

note 10+ 5G SM-N976N

Hi,
c

You have to use the same model to flash in Odin. 976B is not 976N.
You can flash the KOO firmware for 976N which is the unbranded version (I bought it myself at a Samsung shop in Seoul).

I tried to flash with 976B and got errors. I flashed with KOO 976N but srill i have brand of KT when i start the phone also some settings of KT.
No idea why KT still stays after flashing

minipac13 said:
I tried to flash with 976B and got errors. I flashed with KOO 976N but srill i have brand of KT when i start the phone also some settings of KT.
No idea why KT still stays after flashing
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Right, because 976B is not the phone you have. You can't use a different model firmware.
Sounds like you need to change the CSC to KOO after boot up.

I used CSC for KOO byr still no lick
Let me know which CSC maybe i am doing something wrong

minipac13 said:
I used CSC for KOO byr still no lick
Let me know which CSC maybe i am doing something wrong
Click to expand...
Click to collapse
You said you flashed KOO firmware. That is not the same thing as switching CSC after booting up.
There is a phone menu to change the CSC. You need to do this, which will change the CSC setting on the EFS partition which is what you need to do.

Woow thank you for that. Now this is new and i didn't know it. Can you help me and let me know where to change CSC.
Thanks

*#272*IMEI# not working... i don't want to root also

minipac13 said:
*#272*IMEI# not working... i don't want to root also
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Click to collapse
you can try this:
https://forum.xda-developers.com/ga...de-how-to-change-s9-s9-csc-model-csc-t3870836

Kalm_Traveler said:
you can try this:
https://forum.xda-developers.com/ga...de-how-to-change-s9-s9-csc-model-csc-t3870836
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Click to collapse
no use and help from link since this was for combination firmware.
did you change ur CSC ? which method?

minipac13 said:
no use and help from link since this was for combination firmware.
did you change ur CSC ? which method?
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Click to collapse
The SM-N976N has 4 CSC options built-in. KOO is the unbranded Samsung code. There are 3 for the 3 major carriers in Korea: SK Telecom, kt Olleh, and LG U+
No I did not change my CSC because I bought my phone in a Samsung store in Seoul.

I have KT one , when i switch one says 5G and under screen KT.
also in setting. I am trying to find the way to change the CSC from KTC to KOO

Active KTC

Edit

Ohhh no way that bad
For me only Samsung pay ,5G, start up the phone, phone can't recognize my number rather than that everything else is perfect.
I am trying to find way to change CSC to KOO, hopefully will work

minipac13 said:
Ohhh no way that bad
For me only Samsung pay ,5G, start up the phone, phone can't recognize my number rather than that everything else is perfect.
I am trying to find way to change CSC to KOO, hopefully will work
Click to expand...
Click to collapse
Do you mean your N10+ doesn't connect to the 5G network even if it's present and working in your zone?

Yes i don't see 5G at all even covered in my country. Always LTE+

Weird.. where are you from?
Our model is 5G, I suppose SM-976B only is suitable for 5G networks over asian countries, hope someone could tell me I'm wrong...

vysus said:
Weird.. where are you from?
Our model is 5G, I suppose SM-976B only is suitable for 5G networks over asian countries, hope someone could tell me I'm wrong...
Click to expand...
Click to collapse
I don't know the specs of the B variant, but my N variant 5g worked in Korea just fine. Haven't been able to test it in the USA yet because T-Mobile doesn't have any 5g towers in my state yet.

In my country, UAE according to bands only N976N working since the are on same 5G band.
N976B isn't working with UAE network (5G). I bought and sold N976B.
Also now N976N is not working coz of carrier, KT from Korea.

CSC of imported device

I imported a Note 10+ from Canada (N975W) it was from Rogers, but they sell all their devices unlocked anyway, I'm here in the UK & using a EE sim card, everything works perfect apart from Samsung Pay.
So my question is, am I on the best possible firmware I can be?, In the UK we have the Exynos Note 10+ so it's not possible for me to flash UK firmware right?
Also my CSC is XAC/XAC/XAC/RWC
XAC is unlocked, RWC is Rogers, so is it just displaying that the device was originally on Rogers & is now on unlocked?
Any help / information is appreciated.

So RWC you can't change and it doesn't affect software updates. First two makes sense what updates and where you gonna recieve | Country / Region / Operator. Unlocked or not, it doesn't give you faster updates. XAC is sim free version code for Canada, I believe. And don't flash Exynos firmware on SD.

Nettwerk said:
So RWC you can't change and it doesn't affect software updates. First two makes sense what updates and where you gonna recieve | Country / Region / Operator. Unlocked or not, it doesn't give you faster updates. XAC is sim free version code for Canada, I believe. And don't flash Exynos firmware on SD.
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Click to collapse
So in summary XAC is the best firmware I can be on because it's SIM free which means no carrier bloat, RWC is meaningless (just signifies the original firmware I'm guessing?), & I can't get but also don't need, UK firmware?

Yes you are right. And yes you don't need UK firmware.
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