how to change CSC for noob? - Samsung Galaxy S20 FE Questions & Answers

Hello,
I bought a S20 FE 4G Snapdragon (G780G) with CSC si a Portuguese operator. updates always arrive late compared to the Italian or French CSC, sometimes even 1 month, so I would like to change the firmware to the Italian one.
I have never done any such operation but I understand that I should use samkey. would anyone be kind enough to point me to a guide that is still valid today, or to write the guide here? I am a beginner with this operation on Samsung, and I would not want to make mistakes.
will i lose all data?
thanks to anyone who will help me

100% untested (by me) suggestion put forward by another member.
with root navigate to
/efs/imei/mps_code.dat
edit the CSC in that file and presumably save and reboot.

Related

CSC Change

Hi everyone,
I've purchased a Korean Galaxy Note 8 (SM-N950N) and rooted it with TWRP and SuperSu. Now I want to change CSC to Vietnam.
I already download 2 stock firmwares (Korean and Vietnamese).
Can you please guide me for next steps with Odin?
just go grab the S8 CSC changer and use that. All we have to do is add 1 line in one of it's scripts so that it will run on a device with 'greatlte' in the name.
Kalm_Traveler said:
just go grab the S8 CSC changer and use that. All we have to do is add 1 line in one of it's scripts so that it will run on a device with 'greatlte' in the name.
Click to expand...
Click to collapse
Hi Kalm,
Thank you for your answer. Could you please give me a link with instructions inside?
khoanb1 said:
Hi Kalm,
Thank you for your answer. Could you please give me a link with instructions inside?
Click to expand...
Click to collapse
https://forum.xda-developers.com/galaxy-s8/samsung-galaxy-s8--s8-cross-device-development/utility-flashable-csc-selection-v1-1-0-t3636739
Another user posted in one of the most recent pages exactly what needs to be edited for it to run on a Note 8. Super easy, takes 2 seconds to do, then you just zip it up again and flash/run it in TWRP.
Kalm_Traveler said:
https://forum.xda-developers.com/galaxy-s8/samsung-galaxy-s8--s8-cross-device-development/utility-flashable-csc-selection-v1-1-0-t3636739
Another user posted in one of the most recent pages exactly what needs to be edited for it to run on a Note 8. Super easy, takes 2 seconds to do, then you just zip it up again and flash/run it in TWRP.
Click to expand...
Click to collapse
It seems that this CSC Selection file did not work for me even I already updated the script file META-INF/com/google/android/updater-script with this code:
getprop("ro.product.device") == "greatlte" || getprop("ro.build.product") == "greatlte" || getprop("ro.product.name") == "greatlte" ||
When I flashed zip file I got error no digest file found
I have this problem could not find any specific answer so far. I'm from UK with an international Note 8 (N950F) unlocked and want to use it with THREE, especially from the wi-fi calling. So, downloaded THREE firmware and after extraction, I got CSC and HOME_CSC among others. First, through ODIN installed HOME_CSC after reboot could not notice any difference at all, the mobile seems the same so decided to install the CSC which obviously wipe the Note. The same, nothing different on the phone. Lastly, I installed everything (AP, BL, CP, CSC) only that way I got Wi-FI calling but also many apps from THREE ( Deezer, Three, Three likes, Ebay, Amazon Underground, Prime video, Amazon MDIP, Operator Settings) and a horrible start-up boot logo and so on. Despite I got Wi-Fi calling I got more stuff and I am not happy at all. Thinking seriously to go back to the international version I had. Does anyone know why after changing the CSC was not any difference in my Note?
Find attached two pictures, first one shows the wi-fi calling option under Contacts-Settings using THREE firmware, and the other one is from the UK international firmware where wi-fi calling option is not there.
Khoanb1, Kett_Traveler modified the S8 CSC Changer zip to work for the Note 8 but only added the USA CSC to it because that's what he needed. I've since took his zip and added the Canadian Multi-CSC (XAC) for myself and the European Multi-CSC (DBT) for you. The European Multi-CSC (DBT) contains the Vietnam CSC (XXV). Download the zip from MEGA here and install it with TWRP. When it asks you which CSC to install, choose DBT, then choose XXV in the next screen to select your Vietnam CSC. Make sure to select XXV and not keep it at the default of DBT at the 2nd menu.
I've successfully used this zip to change my CSC to the Canadian one. Note that after the CSC change, your phone will factory reset itself and wipe all your data (if I remember correctly). So make sure to backup externally first if needed. After a restart, your phone will boot up with the proper boot animation for your CSC and you'll have all your carrier-specific features. For me, changing my CSC allowed me to connect to LTE networks which was not possible before (I was limited to 4G speeds instead). Also, the Korean apps that came with the phone are preloaded onto our system partition, so you have to delete them from /system/apps or through Titanium Backup. You can also freeze them if you prefer.
Note: I haven't tested the install with the XXV CSC so test it and tell me if it works.
peacey8 said:
Khoanb1, Kett_Traveler modified the S8 CSC Changer zip to work for the Note 8 but only added the USA CSC to it because that's what he needed. I've since took his zip and added the Canadian Multi-CSC (XAC) for myself and the European Multi-CSC (DBT) for you. The European Multi-CSC (DBT) contains the Vietnam CSC (XXV). Download the zip from MEGA here and install it with TWRP. When it asks you which CSC to install, choose DBT, then choose XXV in the next screen to select your Vietnam CSC. Make sure to select XXV and not keep it at the default of DBT at the 2nd menu.
I've successfully used this zip to change my CSC to the Canadian one. Note that after the CSC change, your phone will factory reset itself and wipe all your data (if I remember correctly). So make sure to backup externally first if needed. After a restart, your phone will boot up with the proper boot animation for your CSC and you'll have all your carrier-specific features. For me, changing my CSC allowed me to connect to LTE networks which was not possible before (I was limited to 4G speeds instead). Also, the Korean apps that came with the phone are preloaded onto our system partition, so you have to delete them from /system/apps or through Titanium Backup. You can also freeze them if you prefer.
Note: I haven't tested the install with the XXV CSC so test it and tell me if it works.
Click to expand...
Click to collapse
Hi peacey8,
Thank you very much for your effort and your thorough guidance. Your zipped file worked very well for my device and now I could have XXV CSC code in my Galaxy Note 8.
I can see some big changes:
1. boot logo is the same with Note 8 devices distributed in Vietnam
2. some apps were installed by default like these devices
3. Samsung Pay can recognise Vietnamese network providers (but I could not still use it because my device was rooted). If you have any idea about it, please let me know.
Great! I'm glad it worked. Unfortunately, Samsung Pay will not work because Knox was tripped. Android Pay still works though if you use Magisk root with Magisk Hide.
Right now there is no solution to Samsung Pay with root. In the future there could be some solution. I'm sure some creative person will come up with something eventually.
peacey8 said:
Great! I'm glad it worked. Unfortunately, Samsung Pay will not work because Knox was tripped. Android Pay still works though if you use Magisk root with Magisk Hide.
Right now there is no solution to Samsung Pay with root. In the future there could be some solution. I'm sure some creative person will come up with something eventually.
Click to expand...
Click to collapse
Hi peacey8,
Thank you for your explaination. I have another question:
What will happen if I flash all tar files in the Vietnamese stock firmware to my Korean Note 8?
Will I get the CSC code like devices distributed in Vietnam? And will Odin allow me to do this?
khoanb1 said:
Hi peacey8,
Thank you for your explaination. I have another question:
What will happen if I flash all tar files in the Vietnamese stock firmware to my Korean Note 8?
Will I get the CSC code like devices distributed in Vietnam? And will Odin allow me to do this?
Click to expand...
Click to collapse
Honestly I'm not sure if it's impossible. I'll let someone more knowledgeable than me answer that question. However the Korean Note 8 and the Vietnamese Note 8 are both running on the Exynos SoC, so it might be possible to switch firmwares with a lot of hard work and many problems. For one, the devices have different storage capacities and so will have different PIT files (the file that determines which tar image file goes where and how big it should be). Another issue is the bootloader (the most basic, low-level software of the phone that talks to the hardware to start your phone up) is different for the Korean and European models, so you can't flash the Vietnamese BL file on the Korean model. It would brick the phone if you did.
So in short, no you can't flash a different firmware. But, why do you need to? What's wrong with the current solution of switching CSCs that you just did? Is there still a feature you are missing?
peacey8 said:
.....I've successfully used this zip to change my CSC to the Canadian one. Note that after the CSC change, your phone will factory reset itself and wipe all your data (if I remember correctly)...
Click to expand...
Click to collapse
i've used a similar file for the S8+ and my phone rebooted with a new CSC and the message "Android is updgrading"... but it did not wipe my phone.
peacey8 said:
Honestly I'm not sure if it's impossible. I'll let someone more knowledgeable than me answer that question. However the Korean Note 8 and the Vietnamese Note 8 are both running on the Exynos SoC, so it might be possible to switch firmwares with a lot of hard work and many problems. For one, the devices have different storage capacities and so will have different PIT files (the file that determines which tar image file goes where and how big it should be). Another issue is the bootloader (the most basic, low-level software of the phone that talks to the hardware to start your phone up) is different for the Korean and European models, so you can't flash the Vietnamese BL file on the Korean model. It would brick the phone if you did.
So in short, no you can't flash a different firmware. But, why do you need to? What's wrong with the current solution of switching CSCs that you just did? Is there still a feature you are missing?
Click to expand...
Click to collapse
It's only a question because I'm so confused if I can totally convert my Korean device to Vietnamese one.
You are right, so dangerous to replace bootloader even I already created backup for all partitions.
khoanb1 said:
It's only a question because I'm so confused if I can totally convert my Korean device to Vietnamese one.
You are right, so dangerous to replace bootloader even I already created backup for all partitions.
Click to expand...
Click to collapse
Hi Khoanb1,
Luckily i found your thread up here, i'm a clueless Vietnamese when it come to rooting phone and other related things. I also bought an KR Galaxy Note 8 lately and have been wondered since then. Is there any other feature that missing on an KR note 8 to a distributed VN note 8?
Would you be so kind to instruct me install them just like you did? im a total noob here.
If you dont mind i can ask for your social media account so we can discuss further.
lluvias91 said:
Hi Khoanb1,
Luckily i found your thread up here, i'm a clueless Vietnamese when it come to rooting phone and other related things. I also bought an KR Galaxy Note 8 lately and have been wondered since then. Is there any other feature that missing on an KR note 8 to a distributed VN note 8?
Would you be so kind to instruct me install them just like you did? im a total noob here.
If you dont mind i can ask for your social media account so we can discuss further.
Click to expand...
Click to collapse
Hi lluvias91,
I already sent you a private message including my fb account, let's start our converstion about this topic
do you know guys if a packed Note 8 Eng Boot for Exynos variant (SM-N950F) is available ?
tengo el inconveniente con el n950F Exynos sin interruptor de desbloqueo OEM Ayuda
I have the N950F Exynos phone and want to flash the US Mobile CSC to get Wi-Fi calling. I don't have root and am in jail with the no oem unlock issue. I was wondering if I could just flash the CSC from the complete N950U firmware using ODIN. Or can you not mix the F firmware files with the U versions?
I saw the zip file to do the same but it requires root and TWRP to flash.
Not sure I like this phone being locked down. Very frustrating not being able to just root and install a working ROM without having to wait 7 days!
Thanks
In download mode. My carrier id is blank. How do i add the id back?
Hi guys
I buy mine in Morocco N950F Dual Sim (Exact version : SM-N950FZDDMWD).
My phone are not rooted and i dont want to do it for the moment. dont want to increment the knox
I need the french CSC. If i downlaod a french stock firmware N950F and install it with Odin.
It will work without loosing my garante and continue to use samsung Pay ?
Sorry for my bad english
thanks in advance

I really need help understanding CSCs...

Ok so I understand the basic concept of CSC codes, but their purpose is lost to me.
I bought a Note 8 Duos and it arrived with CHO/CHO/XSG. I live in Canada and I know that I can't get a Canadian CSC since the Duos is not sold here (unless there would be a way to get a 9500, flash a W8 ROM and keep dual sim somehow...?), but I'm also concerned about having CHO (Chile I think) while using the phone here, with things such as updates and all. I tried to flash BTU (UK) but it didn't work - just reverted to CHO.
So, to help me understand, could someone explain the following to me:
1. Does it matter at all which CSC code is on my phone?
2. Could I change the CSC at all and would I benefit from it at all?
3. Am I losing any functionality by having a foreign CSC?
4. Can I force updates on my phone?
5. Is there anything else I should know about playing with CSC?
The one thing I don't get is I cannot, for the life of me, get access to Samsung Pay even if it is available in Canada... I'm assuming it has to do with the CSC but I'm not even sure.
I know this is utmost noobishness, but I really need to get my head around all this, so any info, links, etc would be great.
Thanks
PS: I did do some extensive searching so please don't remind me of the existence of Google... I checked

Question Change CSC S21 ultra

Hello any solution to change csc on s21 ultra? Samkey not work
it seems there is no way curently
I did this method and it worked https://androidmore.com/change-csc-samsung/
I have a s21 ultra exynos , and a unlock phone , global version
I installed the AUT update via odin and the csc was TPA , so i did the method on the link to change to AUT and it worked but it deleted everything
but what about Carrier blotware?
Jpablo67 said:
I did this method and it worked https://androidmore.com/change-csc-samsung/
I have a s21 ultra exynos , and a unlock phone , global version
I installed the AUT update via odin and the csc was TPA , so i did the method on the link to change to AUT and it worked but it deleted everything
Click to expand...
Click to collapse
Hmmm, it says invalid MMI code whenever I try it.
Jpablo67 said:
I did this method and it worked https://androidmore.com/change-csc-samsung/
I have a s21 ultra exynos , and a unlock phone , global version
I installed the AUT update via odin and the csc was TPA , so i did the method on the link to change to AUT and it worked but it deleted everything
Click to expand...
Click to collapse
Which step on the link did you exactly do? There are many options.
Any update on this? I have S21 Ultra with TPA and I want to change the CSC to BTU. I am in Canada and I hope this will help with faster updates. Also I am having problems with slow 4G uploads, and faster updates might be the solution.
Thank you..
elena11 said:
Any update on this? I have S21 Ultra with TPA and I want to change the CSC to BTU. I am in Canada and I hope this will help with faster updates. Also I am having problems with slow 4G uploads, and faster updates might be the solution.
Thank you..
Click to expand...
Click to collapse
If your device is SD then you won't be able to get BTU.
If it is exynos then you can flash the BTU firmware.
Your 4g speeds may be slow if you do not have the correct csc files for your provider. Eg: having BTU for Rogers may not get your the speeds you are looking for.
Techvir said:
If your device is SD then you won't be able to get BTU.
If it is exynos then you can flash the BTU firmware.
Your 4g speeds may be slow if you do not have the correct csc files for your provider. Eg: having BTU for Rogers may not get your the speeds you are looking for.
Click to expand...
Click to collapse
I have Exynos device. If I do Canadian CSC on Exynos S21 Ultra, will I have better 4G in Canada?
Thank you.
@carlitobahsoun
March Update is out for S21 Ultra xid CSC . So if I want call recording I just have to flash xid home_csc right?
iamnotkurtcobain said:
@carlitobahsoun
March Update is out for S21 Ultra xid CSC . So if I want call recording I just have to flash xid home_csc right?
Click to expand...
Click to collapse
yup , i only flashed home csc , no wipe sure , other poeple on Russian forum flashed full 4 files / for me from first open box was downloaded xid full firmware and once get my s21 ultra i flashed only home csc .
i got march patch now ota and will install now
my out of box csc was MID/MID/MID/XSG
now its XID/XID/XID/XSG
and OTA received well
**in case AFTER FLASH AND REBOOT a pop up appear asking u keep curent or back to sim card detected : SELECT KEEP CURENT.
@carlitobahsoun
Is there another way than samkey to change my DBT CSC to ATO? voLTE isn't working with my simcard if I don't have ATO as CSC :/
iamnotkurtcobain said:
@carlitobahsoun
Is there another way than samkey to change my DBT CSC to ATO? voLTE isn't working with my simcard if I don't have ATO as CSC :/
Click to expand...
Click to collapse
till now , only samkey .....
i dont have volte in my country , no 5g in my country , no google pay in my country , no samsung pay in my country , no PayPal in my country , no paid app or watchface appears in galaxy store in my country , bad bad bad .
I used the link in this tread and I selected BTU, but I did not pay attention that it was mentioned that is Single. Now I have BTU, but I have some problems receiving SMS and I cannot go back to TPA. When I try *#272* IMEI# it does not do anything. Any idea what I have to do to go back to Dual SIM?
elena11 said:
I have Exynos device. If I do Canadian CSC on Exynos S21 Ultra, will I have better 4G in Canada?
Thank you.
Click to expand...
Click to collapse
You will not be able flash Canadian CSC on an exynos device.
First you have to root the device and Either you or some else will have to edit the canadian csc file to make it compatible wtih exynos.
Some one has done for me in the past with note 8 but that dev is no longer in XDA.
The other option is to root and then copy the required csc files.
With this there is a high chance that the imeir related files can get corrupted.
elena11 said:
I used the link in this tread and I selected BTU, but I did not pay attention that it was mentioned that is Single. Now I have BTU, but I have some problems receiving SMS and I cannot go back to TPA. When I try *#272* IMEI# it does not do anything. Any idea what I have to do to go back to Dual SIM?
Click to expand...
Click to collapse
You can flash any other file with multicsc.
There is no reason for you not recieve sms with BTU csc. However, if it does happen fhe csc firmware that is the original one. i.e look at the third tri letter in the csc info.(this third letter never changes , more like hard coded)
I do get SMSs but, I was not able to get one from my bank. The 3rd 3 letters are still TPA. I do not know if it is normal, but the dual sim menu has much fewer options. I can choose from what sim to call only after I dial at least one digit. And When I try to activate Dual sim always on, the toggle still stays off.
For the Canadian CSC, I suspected that it will be impossible to flash. I used to be on TPA and now I am on BTU, I had problems slow upload speed on 4G. Now is a bit better, but the download is staying around 50-75. before I had 160-300 Mbps.
Where I can get Multicsc and do I have to root the phone?
Thank you.
elena11 said:
I do get SMSs but, I was not able to get one from my bank. The 3rd 3 letters are still TPA. I do not know if it is normal, but the dual sim menu has much fewer options. I can choose from what sim to call only after I dial at least one digit. And When I try to activate Dual sim always on, the toggle still stays off.
For the Canadian CSC, I suspected that it will be impossible to flash. I used to be on TPA and now I am on BTU, I had problems slow upload speed on 4G. Now is a bit better, but the download is staying around 50-75. before I had 160-300 Mbps.
Where I can get Multicsc and do I have to root the phone?
Thank you.
Click to expand...
Click to collapse
Rooting won't help you much with signal or speed of data, unless you have to flash some modified csc files.
Your problem could also be the absence of the required bands,whuch may be lacking in exynos.
I have a SD version ( decided to go wtih non root this time as most of the things that need root can be done with adb anyways. Also there is root for SD too these days) so cannot help you much.
Techvir said:
Rooting won't help you much with signal or speed of data, unless you have to flash some modified csc files.
Your problem could also be the absence of the required bands,whuch may be lacking in exynos.
I have a SD version ( decided to go wtih non root this time as most of the things that need root can be done with adb anyways. Also there is root for SD too these days) so cannot help you much.
Click to expand...
Click to collapse
I am missing only one band, and this is not a problem. B29 in LTE. Al the rest are there. My question was more like is it normally to loose t some fucntciuts of Dual sim manager and and is there an easy way to change back and forth CSC without rooting. I do not want to root. Thank. you
elena11 said:
I am missing only one band, and this is not a problem. B29 in LTE. Al the rest are there. My question was more like is it normally to loose t some fucntciuts of Dual sim manager and and is there an easy way to change back and forth CSC without rooting. I do not want to root. Thank. you
Click to expand...
Click to collapse
Chainging csc is easy by flashing the CSC file. Rooting won't affect it. Rooting has its downsides.
Your loss of dual sim fn could be related to csc but BTU should support full dual sim fn.

Question CSC Stuck on BGL not BTU as expected.

Preface: Bought my S21 Ultra from an eBay seller with the assumption it would be UK based as it came from within the UK. However, it might be from Bulgaria as per the CSC code being set to BGL. At the moment this hasn't resulted in any major errors sans one.
I am unable to use Samsung Pay as I'm assuming the apps things it's a Bulgarian phone and as a result doesn't support Samsung Pay.
What's the best way for me to go about changing the CSC to BTU? I've already attempted this once by flashing an OXM build via Odin but this didn't change it as I expected it to.
Thoughts or suggestions very welcome!
I suggest trying to flash a BTU or OXA firmware as they are UK CSCs.
Also, try flashing firmware that's aligned to your network provider. This method worked for my Note 8 and I was able to enable the VolTE and other functionalities.
mattyc491 said:
Preface: Bought my S21 Ultra from an eBay seller with the assumption it would be UK based as it came from within the UK. However, it might be from Bulgaria as per the CSC code being set to BGL. At the moment this hasn't resulted in any major errors sans one.
I am unable to use Samsung Pay as I'm assuming the apps things it's a Bulgarian phone and as a result doesn't support Samsung Pay.
What's the best way for me to go about changing the CSC to BTU? I've already attempted this once by flashing an OXM build via Odin but this didn't change it as I expected it to.
Thoughts or suggestions very welcome!
Click to expand...
Click to collapse
flashing BTU rom won't chnage your CSC. you have to use SAMKEY app. search for it in google and learn how to use it . there are couple of threads here in xda.
Good Luck!

Question How to change Samsung Pay Region for Galaxy S21 Ultra?

I have recently moved From India to France. Unfortunately I can't seem to add my cards here since Samsung Pay only accepts cards from India. I created a new Samsung account in France but that didn't seem to make any difference.
Is there any way I can change the location for my Samsung Pay for it to work here? I read somewhere that I need to change my CSC region or something? Do I have to download the France firmware to do that or is there another way? Worried I might mess up my phone if I mess with it haha. I tried factory resetting it with my French sim but it didn't make any difference? Is it possible to do it like that/ did I miss a step or something or is flashing firmware the only way to go about this? Would appreciate any and all suggestions and tips so i don't break my phone haha as I'd like to keep it functioning and under warranty.
Also if i need to flash a new firmware,
1. Do i download the France(XEF) firmware or France(SFR) firmware(since the sim card i bought here is Red by SFR).
2. Is the PDA id basically the build number of my phone? since I'd need to download that specific firmware i think.
Sorry for the stupid questions. Would appreciate all the help I can get as I've never done this before.
rocknrjiii said:
I have recently moved From India to France. Unfortunately I can't seem to add my cards here since Samsung Pay only accepts cards from India. I created a new Samsung account in France but that didn't seem to make any difference.
Is there any way I can change the location for my Samsung Pay for it to work here? I read somewhere that I need to change my CSC region or something? Do I have to download the France firmware to do that or is there another way? Worried I might mess up my phone if I mess with it haha. I tried factory resetting it with my French sim but it didn't make any difference? Is it possible to do it like that/ did I miss a step or something or is flashing firmware the only way to go about this? Would appreciate any and all suggestions and tips so i don't break my phone haha as I'd like to keep it functioning and under warranty.
Also if i need to flash a new firmware,
1. Do i download the France(XEF) firmware or France(SFR) firmware(since the sim card i bought here is Red by SFR).
2. Is the PDA id basically the build number of my phone? since I'd need to download that specific firmware i think.
Sorry for the stupid questions. Would appreciate all the help I can get as I've never done this before.
Click to expand...
Click to collapse
Flash the SFR Firmware if that's your current service provider.
varcor said:
Flash the SFR Firmware if that's your current service provider.
Click to expand...
Click to collapse
My AP ends with AUJ7
im guessing i need to match that to the PDA of the firmware im downloading?
for SFR there is no such PDA that ends with AUJ7 but in the XEF version there is. Does that mean i can only download the XEF version?
rocknrjiii said:
My AP ends with AUJ7
im guessing i need to match that to the PDA of the firmware im downloading?
for SFR there is no such PDA that ends with AUJ7 but in the XEF version there is. Does that mean i can only download the XEF version?
Click to expand...
Click to collapse
Hi
Flash a firmware from Europe , so you have available a french CSC
Then You need to change your active CSC to one from France , at the moment (without root) you have to use a pay service (samkey) , after that you can use you french account for samsung pay and add credit cards from that country

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