Should i change the CSC? - Samsung Galaxy S20 / S20+ / S20 Ultra Questions &

Hello,
I have a Galaxy S20+ 5G SM-G986B with CSC: XSG (United Arab Emirates) and have the last OTA update G986BXXU5CUA3 with changelist 20699066 but the Security patch date is 2021-01-01. I live in Romania and here we have ROM CSC and the last update is G986BXXS6CUA8 with the same changelist 20699066 but Security patch date is 2021-02-01.
Is there any differences between them if the changelists are the same?
1. Should i change my CSC to ROM? What benefits will i have?
2. What is the best method to change the CSC? Will i have the option to update OTA if i change my CSC?
Thanks.

CSva said:
Hello,
I have a Galaxy S20+ 5G SM-G986B with CSC: XSG (United Arab Emirates) and have the last OTA update G986BXXU5CUA3 with changelist 20699066 but the Security patch date is 2021-01-01. I live in Romania and here we have ROM CSC and the last update is G986BXXS6CUA8 with the same changelist 20699066 but Security patch date is 2021-02-01.
Is there any differences between them if the changelists are the same?
1. Should i change my CSC to ROM? What benefits will i have?
2. What is the best method to change the CSC? Will i have the option to update OTA if i change my CSC?
Thanks.
Click to expand...
Click to collapse
1. You do not need to change the CSC. But to receive OTA updates, you will need the stock) original firmware running the CSC of your region.
2. There are different ways to change CSC. Keep in mind that changing the CSC will wipe your data. So backup everything you need before.
One method is to flash a firmware with Odin on PC via USB cable to your phone using the CSC file you want.
Another method is described in this thread: https://forum.xda-developers.com/t/free-csc-change-apk-for-s20.4116015/

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Update phone using other CSC

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I have the pro csc ( multi csc from vodafone). But apparently, the may update is not out yet, but for the other vodafone csc's it is. Is it possible to use a csc within vodafone like VD2 or VDF to update my device without losing de pro csc? If so, what files do I need? Only AP or...
Thnx in advance

Change CSC on a rooted G960F? possible?

Hi All,
I have tried searching for a solution to change CSC Code on a rooted G960F BRI model but all threads are about changing it without root (and that doesn't work).
Can someone point me to a thread maybe, that provides the steps to change CSC on a rooted phone?
You should be able to change it without root as long as the new CSC you are flashing does not contain the phones original CSC
For example BTU is Multi_CSC and contains XEU, so if your phone was originally XEU and you wanted to try and switch to BTU you cannot because the phone will automatically choose the original CSC from the Multi_CSC
You would need to flash a CSC that is either a single CSC or does not contain BRI
Look on the play store for CSC changer for a root method
*Detection* said:
You should be able to change it without root as long as the new CSC you are flashing does not contain the phones original CSC
For example BTU is Multi_CSC and contains XEU, so if your phone was originally XEU and you wanted to try and switch to BTU you cannot because the phone will automatically choose the original CSC from the Multi_CSC
You would need to flash a CSC that is either a single CSC or does not contain BRI
Look on the play store for CSC changer for a root method
Click to expand...
Click to collapse
Hey Thanks for your reply....I am currently on BRI and wanting to move CSC to XSA but XSA being single CSC and BRI multi CSC I think it is not possible yet....

How to change firmware from csc SKC to KOO of same region (Korea)?

I tried to flash the firmware for KOO csc version on my S9, it says passed ang turned green, but on my phone, it restarts to recovery when the installing system update just began to happen.
Can anybody help me how will I be able to flash this firmware properly? I've been using ODIN for my previous samsung phones , flashing and modding, but I can't pass this one.
thank you very much in advance!
Model is SM-G960N
CSC version and PDA version are same for SKC and KOO
PDA version = G960NKSU1ARJ2
CSC version = G960NOKR1ARJ2
KOO
https://www.imei.info/download-firmware/samsung/samsung-galaxy-s9/SM-G960N/KOO/pda/
SKC
https://www.imei.info/download-firmware/samsung/samsung-galaxy-s9/SM-G960N/SKC/pda/
You can use combination firmware to change the CSC to KOO. Below is the reference,
https://forum.xda-developers.com/galaxy-note-9/how-to/guide-change-note-9-csc-easy-guide-t3879473
feelow said:
You can use combination firmware to change the CSC to KOO. Below is the reference,
https://forum.xda-developers.com/galaxy-note-9/how-to/guide-change-note-9-csc-easy-guide-t3879473
Click to expand...
Click to collapse
Can this be used with note fan edition?
Hello, I still need help with my S9, I'm trying to flash it out of SKC CSC to KOO so I could unlock my bootloader but when I flash the firmware it's still in SKC

A50 December update (XSG)

When will the latest (December) update would be availabe for my phone? CSC : XSG
I know it's been released for other regions but it's not for mine XSG
IMAN2000 said:
When will the latest (December) update would be availabe for my phone? CSC : XSG
I know it's been released for other regions but it's not for mine XSG
Click to expand...
Click to collapse
Not for me either

Recommended Firmware for Unbranding a Samsung Galaxy S20+ (SM-G985F)

Hello community!
I recently bought a Samsung Galaxy S20+ (SM-G985F) which is carrier branded and sim locked. I am looking to remove the carrier branding by using a unbranded firmware. I am trying to find an unbranded firmware that will not affect the functionalities of the phone ( VoLTE, VoWiFi etc..) . Would this be done by finding a firmware with same PDA but different CSC?
Current Branded Firmware:
Version G985FXXU3ATG4 / G985FOWA3ATG4 / G985FXXU3ATG4
Product Code: PGU
Would this firmware work?
Product code LUX
PDA G985FXXU3ATG4
CSC G985FOXM3ATG9
Thanks in advance for your help!
@servenaya
if you have a sim card of Guatemala and you want to keep VoLTE, VoWiFi etc.. for this country
install Version PDA G985FXXU3ATG4-CSC G985FOXM3ATG9
and change your CSC to GTO ( with préconfiguration for TIGO_CGU , PCW_PA and Claro_DR )
LUX have only préconfiguration for Luxemburg ( Proximus , POST , Tango , Telenet , Orange B and LUX )
regards
yakapa40 said:
@servenaya
if you have a sim card of Guatemala and you want to keep VoLTE, VoWiFi etc.. for this country
install Version PDA G985FXXU3ATG4-CSC G985FOXM3ATG9
and change your CSC to GTO ( with préconfiguration for TIGO_CGU , PCW_PA and Claro_DR )
LUX have only préconfiguration for Luxemburg ( Proximus , POST , Tango , Telenet , Orange B and LUX )
regards
Click to expand...
Click to collapse
@yakapa40, thank you! This information is very helpful. I do have a Claro Guatemalan sim and even though the carrier does not support VoLTE, or VoWifi, I would like to keep this features in case they implement them in the future. I did find a firmware with the recommended PDA and CSC (Country South East Europe, Product code: SEE, PDA: G985FXXU3ATG4, CSS: G985FOXM3ATG9). Would this firmware work? From what understand, I would have to first flash this firmware, then change de CSC with Samkey to GTO and lastly, factory restore the phone. Is this correct?
Also, would you recommend using Samkey to perform a carrier unlock before changing the CSC or could I do it later on? I read that Samkey only works for phones that dont ask for unlock code. Mine does ask for a code when I insert another carrier's sim.
Thanks in advance for your help!
save all your data
install new firmware
you have a free apk here to change the CSC:
https://forum.xda-developers.com/showpost.php?p=82858645&postcount=37
yakapa40 said:
save all your data
install new firmware
you have a free apk here to change the CSC:
https://forum.xda-developers.com/showpost.php?p=82858645&postcount=37
Click to expand...
Click to collapse
@yakapa40, Thank you once again. Just want to make sure that the firmware mention before is the best one to use? I have attached the software information from my phone. Please let me know your opinion.
yes all is ok with your firmware
PGU:
GTO:
yakapa40 said:
yes all is ok with your firmware
PGU:
GTO:
Click to expand...
Click to collapse
@yakapa40 Thank you for your help. You are extremely knowledgeable on this topic! To be honest, I just realize how little I know about flashing even though I've been doing it since 2012. I feel like I understand firmware flashing less than I did before.
I just have a last question. If I flash the firmware with a CSC NEE, and than do the CSC change to GTO, which CSC will be used for future OTA updates? What I mean is, if there is a new NEE firmware will I get it, or will I have to wait for a new GTO update? Sorry, I am little confused with all of this.
G985F OXM is a multi CSC so if you flash the firmware with a CSC NEE , you will get XEF CSC by default
, and when you change to GTO you will get GTO OTA updates
https://forum.xda-developers.com/galaxy-s20/how-to/s20-g985f-firmwares-t4060279
yakapa40 said:
G985F OXM is a multi CSC so if you flash the firmware with a CSC NEE , you will get XEF CSC by default
, and when you change to GTO you will get GTO OTA updates
https://forum.xda-developers.com/galaxy-s20/how-to/s20-g985f-firmwares-t4060279
Click to expand...
Click to collapse
@yakapa40, I was finally able to flash the phone. I followed the steps and got the GTO CSC and the unbranded firmware working! Thank you for helping me throughout the whole process. The only down side was that I still lost the VoLTE and VoWifi options. When I look at the Sim Card Status menu, the IMS registration Status is "not registered". :crying:

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