Database Develop

[Q] SM-N960F How to change CSC? - I have a problem [resolved]

Hello,
I have SM-N960F with XEH CSC.
I have installed by Odin v.3.13.1 XEO polish firmware (4 part firmware) eaven with .pit file. Odin called PASS!, firmware is changed but CSC is still XEH.
*#272#IMEI# doesn't work.
How to change CSC to XEO?

I suffer the same problem
I suffer the same problem

KartofeLone said:
Hello,
I have SM-N960F with XEH CSC.
I have installed by Odin v.3.13.1 XEO polish firmware (4 part firmware) eaven with .pit file. Odin called PASS!, firmware is changed but CSC is still XEH.
*#272#IMEI# doesn't work.
How to change CSC to XEO?
Click to expand...
Click to collapse
I read that you take a pit-file - why?
Did you take this firmware?
https://www.sammobile.com/firmwares/galaxy-note9/SM-N960F/XEO/download/N960FXXS2ARK2/243456/
Where do you see your CSC?

bininga59 said:
I read that you take a pit-file - why?
Did you take this firmware?
https://www.sammobile.com/firmwares/galaxy-note9/SM-N960F/XEO/download/N960FXXS2ARK2/243456/
Where do you see your CSC?
Click to expand...
Click to collapse
Thank you for intrest in my problem.
Tutorial on polish forum said to take a .pit file and check repartition box - I followed instructions.
I see my CSC in Settings/Telephone - informations (I'm translating from polish it may be diferent named in english, it's last card on the bottom of Settings)/Firmware informations - there I can see CSC
About 10 minutes ago I have resolved the issue.
I have inserted different sim card (from my work) and CSC has changed to XEH/XEH/XEO/XEH.
Then I switch SIM to second slot and CSC become XEH/XEO/XEO/XEH.
Then I did factory reset and now I have XEO/XEO/XEO/XEH
Bottom line instaling new firmware doesn't automaticaly change CSC. You need to insert SIM card to one slot, then to second slot and then do factory reset.
I hope this could help others.
Edit:
Not every SIM card will change CSC. If you have trouble try different SIM card preferably from different operator.

This post was published over 4 year ago, and now I encounter this issue too!
My phone is SM-N960N, and I did flash the corresponding firmware with .pit for multiple times with original system unchanged (CSC code: KTC). What's more, I just got this phone last night!
Does the computer OS itself cause this issue? I promise that Samsung USB driver is well installed.

How to get SM-N920I to detect VoLTE in india without root

Hi fellow XDA members,
I own a Galaxy Note 5 (SM-N920I) which was bought in Singapore under operator Starhub (STH). I happen to use this phone in India and I later realized the phone supports VoLTE but the firmware didn't so I stuck with using the Jio4GVoice app for a long time now and I'm done with it due to lot of bugs and call drops.
I looked online for solutions and found many that involved root or custom recovery to flash the so-called VoLTE fix. I have read articles that said the Indian firmware supports VoLTE so I So, I tried the following:
Download the Indian firmware and flashed via odin. But it fails with error specified file not found. Did a research and i unchecked the Re-partition and again tried and it fails at flashing system . So I re-flashed the STH firmware to get the phone boot up. I learnt that CSC is responsible for getting the region specific network to work.
Extract CSC from Indian firmware and simply flash it on odin. But, as articles say that I'll have 4 files for each boxes to place in odin I only had one tar (<firmware_HOME_tar.md5). Then I read, extracting the modem.bin file and ziping that to a tar file and flash it via odin will help. I tried that but no luck (should I factory reset it?).
Both the firmwares have a single file and articles say that there will be CSC_<firmware>.tar and CSC_HOME_<firmware>.tar.
I don't know where I'm getting wrong. Is this even possible or i'm simply wasting my time? I use samsung pay and S health extensively so I don't wanna trip knox.
Update:
I read that cache.img is CSC from here. So extracted the cache from Indian firmware and flashed that to my phone that has STH firmware. I used the Phone info app and found baseband has been changed and available CSC shows INS but active CSC is STH. Now I guess i just need to activate that CSC. I tried the steps mentioned here but it doesn't work.
https://imgur.com/9Fiy4W4
https://imgur.com/vVe6LDQ

ksbalajee said:
Hi fellow XDA members,
I own a Galaxy Note 5 (SM-N920I) which was bought in Singapore under operator Starhub (STH). I happen to use this phone in India and I later realized the phone supports VoLTE but the firmware didn't so I stuck with using the Jio4GVoice app for a long time now and I'm done with it due to lot of bugs and call drops.
I looked online for solutions and found many that involved root or custom recovery to flash the so-called VoLTE fix. I have read articles that said the Indian firmware supports VoLTE so I So, I tried the following:
Download the Indian firmware and flashed via odin. But it fails with error specified file not found. Did a research and i unchecked the Re-partition and again tried and it fails at flashing system . So I re-flashed the STH firmware to get the phone boot up. I learnt that CSC is responsible for getting the region specific network to work.
Extract CSC from Indian firmware and simply flash it on odin. But, as articles say that I'll have 4 files for each boxes to place in odin I only had one tar (<firmware_HOME_tar.md5). Then I read, extracting the modem.bin file and ziping that to a tar file and flash it via odin will help. I tried that but no luck (should I factory reset it?).
Both the firmwares have a single file and articles say that there will be CSC_<firmware>.tar and CSC_HOME_<firmware>.tar.
I don't know where I'm getting wrong. Is this even possible or i'm simply wasting my time? I use samsung pay and S health extensively so I don't wanna trip knox.
Update:
I read that cache.img is CSC from here. So extracted the cache from Indian firmware and flashed that to my phone that has STH firmware. I used the Phone info app and found baseband has been changed and available CSC shows INS but active CSC is STH. Now I guess i just need to activate that CSC. I tried the steps mentioned here but it doesn't work.
https://imgur.com/9Fiy4W4
https://imgur.com/vVe6LDQ
Click to expand...
Click to collapse
here is another method you can try. but this only works if your phone supports it.
For firmware that uses a multi-csc code, you need to select a sales code before attempting to connect to a cellular network. This is especially true for 3G and 4G connections.
There are two ways to select a sales code:
1. Enter *#06# in the phone dialer to obtain the IMEI number for the device. You can then enter *#272*Device IMEI# to select a sales code. If your Samsung device does not return a menu, the product code is not a multi-csc code.
OR
2. Install an CSC changer app, such as the "Phone INFO" app. CSC changer apps do require root access, and they do not work on all phones and all versions of Android.
Hit thanks if it helps !
P.S. IT ONLY WORKS ON STOCK ROM ...! so you need to be on Stock Rom.

dark_phoenix said:
here is another method you can try. but this only works if your phone supports it.
For firmware that uses a multi-csc code, you need to select a sales code before attempting to connect to a cellular network. This is especially true for 3G and 4G connections.
There are two ways to select a sales code:
1. Enter *#06# in the phone dialer to obtain the IMEI number for the device. You can then enter *#272*Device IMEI# to select a sales code. If your Samsung device does not return a menu, the product code is not a multi-csc code.
OR
2. Install an CSC changer app, such as the "Phone INFO" app. CSC changer apps do require root access, and they do not work on all phones and all versions of Android.
Hit thanks if it helps !
P.S. IT ONLY WORKS ON STOCK ROM ...! so you need to be on Stock Rom.
Click to expand...
Click to collapse
Thanks for your help. I tried solution 1 and it Worked
However, before trying out your solution, my device was in this state:
1. Flashed Singapore ROM
2. Extracted every file from Indian rom and repacked the tar except the system.img (as this was failing to flash in odin)
3. After booting I got a notification from SupportAgent telling me that unauthorized changes have been made, tap here to reboot to undo those changes
4. I then read your solution and updated the CSC to INS from STH. And device got factory reset and for the first time I saw VoLTE logo on my phone :victory:
5. I finished the setup and still getting the same error in notification from SupportAgent. So I tapped on it, and device rebooted to a new blue screen with sim card logo on it and then boot up to system.
6. Now, in the quick settings, VoLTE toggle is gone and I got WiFi Calling toggle instead. However I still have the VoLTE icon on the status bar.
7. So later that day, I redo all the steps.
- Flashed Singapore firmware (This time, the CSC Country was Singapore and the active CSC was XTH instead of STH. There was VoLTE toggle)
- Flashed Cache from Indian Firmware (CSC Country changed to India the active CSC was INS automatically. Now got WiFi Calling toggle)
8. I noticed other changes in the software:
- The gallery App doesn't show Grid view so I'm stuck with List view
- The Samsung Pay says, its not supported for this device
What do you think about this?

ksbalajee said:
Thanks for your help. I tried solution 1 and it Worked
However, before trying out your solution, my device was in this state:
1. Flashed Singapore ROM
2. Extracted every file from Indian rom and repacked the tar except the system.img (as this was failing to flash in odin)
3. After booting I got a notification from SupportAgent telling me that unauthorized changes have been made, tap here to reboot to undo those changes
4. I then read your solution and updated the CSC to INS from STH. And device got factory reset and for the first time I saw VoLTE logo on my phone :victory:
5. I finished the setup and still getting the same error in notification from SupportAgent. So I tapped on it, and device rebooted to a new blue screen with sim card logo on it and then boot up to system.
6. Now, in the quick settings, VoLTE toggle is gone and I got WiFi Calling toggle instead. However I still have the VoLTE icon on the status bar.
7. So later that day, I redo all the steps.
- Flashed Singapore firmware (This time, the CSC Country was Singapore and the active CSC was XTH instead of STH. There was VoLTE toggle)
- Flashed Cache from Indian Firmware (CSC Country changed to India the active CSC was INS automatically. Now got WiFi Calling toggle)
8. I noticed other changes in the software:
- The gallery App doesn't show Grid view so I'm stuck with List view
- The Samsung Pay says, its not supported for this device
What do you think about this?
Click to expand...
Click to collapse
are you still able to use voLTE ?? after these steps.
about Support agent. Ignore it if you can. or skip it. you do not need this as there aren't any official updates after this. (this is only because now system knows that you have modified it, and it will not receive any update. if you can the disable the Support agent app via settings or if possible via root.)
samsung pay will Not work. as knox should have been tripped to 0x1, so Samsung pay like apps will NEVER work after knox trip.

ksbalajee said:
Thanks for your help. I tried solution 1 and it Worked
However, before trying out your solution, my device was in this state:
1. Flashed Singapore ROM
2. Extracted every file from Indian rom and repacked the tar except the system.img (as this was failing to flash in odin)
3. After booting I got a notification from SupportAgent telling me that unauthorized changes have been made, tap here to reboot to undo those changes
4. I then read your solution and updated the CSC to INS from STH. And device got factory reset and for the first time I saw VoLTE logo on my phone :victory:
5. I finished the setup and still getting the same error in notification from SupportAgent. So I tapped on it, and device rebooted to a new blue screen with sim card logo on it and then boot up to system.
6. Now, in the quick settings, VoLTE toggle is gone and I got WiFi Calling toggle instead. However I still have the VoLTE icon on the status bar.
7. So later that day, I redo all the steps.
- Flashed Singapore firmware (This time, the CSC Country was Singapore and the active CSC was XTH instead of STH. There was VoLTE toggle)
- Flashed Cache from Indian Firmware (CSC Country changed to India the active CSC was INS automatically. Now got WiFi Calling toggle)
8. I noticed other changes in the software:
- The gallery App doesn't show Grid view so I'm stuck with List view
- The Samsung Pay says, its not supported for this device
What do you think about this?
Click to expand...
Click to collapse
i need to know too.. did volte worked after all? im doing the same thing but not working

prasadmanjulago said:
i need to know too.. did volte worked after all? im doing the same thing but not working
Click to expand...
Click to collapse
I have dropped that phone the very next day and got my screen shattered and entire display turned dark. I'm not sure whether it worked

ksbalajee said:
I have dropped that phone the very next day and got my screen shattered and entire display turned dark. I'm not sure whether it worked
Click to expand...
Click to collapse
There was a enfenforceskippingpackages.xml file.. deleted every line in there..it worked after..if anyone need more info, pm me or mail [email protected]

Sim Card Changed Error after flashing new rom.

Hello, recently i've flashed 2 roms on my Note 9 N960F version, everything works fine but when i insert my SIM card in the phone it promotes me with this error " Sim card changed, please restart to start using your new sim card" when i restart, the error pops up again. Iam able to receive calls and everything but cant use the phone since the error doesnt go away. Any help with that ?
The ROM i've flashed is LightRom https://forum.xda-developers.com/galaxy-note-9/development/teamexykings-lightrom-t3890084
Thanks in advance <3
Edit : by 2 ROMS i meant 2 different ones, same error pops up on both

Chappi3 said:
Hello, recently i've flashed 2 roms on my Note 9 N960F version, everything works fine but when i insert my SIM card in the phone it promotes me with this error " Sim card changed, please restart to start using your new sim card" when i restart, the error pops up again. Iam able to receive calls and everything but cant use the phone since the error doesnt go away. Any help with that ?
The ROM i've flashed is LightRom https://forum.xda-developers.com/galaxy-note-9/development/teamexykings-lightrom-t3890084
Thanks in advance <3
Edit : by 2 ROMS i meant 2 different ones, same error pops up on both
Click to expand...
Click to collapse
what version of twrp did you flash them on?

bober10113 said:
what version of twrp did you flash them on?
Click to expand...
Click to collapse
3.2.3-0

Chappi3 said:
3.2.3-0
Click to expand...
Click to collapse
try flashing with the latest odin csc_home.md5 corresponding to your sim cards CSC or region.
csc.md5 can also be flashed but might wipe data.

bober10113 said:
try flashing with the latest odin csc_home.md5 corresponding to your sim cards CSC or region.
csc.md5 can also be flashed but might wipe data.
Click to expand...
Click to collapse
Do you mind telling me where the csc.md5 ? the phone came from UAE but im living in Egypt, do i flash with the csc being the original place where the phone came from ( UAE ) or to egypt where im living ?
EDIT : I just found my phone's CSC from Sammobile.com if i flashed CSC do i have to flash to stock rom or the custom rom will work with that csc ?

Chappi3 said:
Do you mind telling me where the csc.md5 ? the phone came from UAE but im living in Egypt, do i flash with the csc being the original place where the phone came from ( UAE ) or to egypt where im living ?
EDIT : I just found my phone's CSC from Sammobile.com if i flashed CSC do i have to flash to stock rom or the custom rom will work with that csc ?
Click to expand...
Click to collapse
just the csc.md5 or home_csc.md5 should work.
you can also download your firmware with sam firm tool 0.3.6 as well. should be much faster.
regarding csc, your sim card is from a carrier(phone company).
carriers have a 3 letter code that identify them. you can use that 3 letter code to search and install the csc file.

bober10113 said:
just the csc.md5 or home_csc.md5 should work.
you can also download your firmware with sam firm tool 0.3.6 as well. should be much faster.
regarding csc, your sim card is from a carrier(phone company).
carriers have a 3 letter code that identify them. you can use that 3 letter code to search and install the csc file.
Click to expand...
Click to collapse
So it is ok to just flash csc on a custom rom, right ? if yes, do i flash the csc via odin ?

Chappi3 said:
So it is ok to just flash csc on a custom rom, right ? if yes, do i flash the csc via odin ?
Click to expand...
Click to collapse
as always do a full twrp backup 1st.
flash home_csc.md5 = no data wipe
flash csc.md5 = possible data wioe/phone reset
also id take out the sim 1st, flash and make it boot to home screen. then shut down phone insert sim and then power up again.

bober10113 said:
as always do a full twrp backup 1st.
flash home_csc.md5 = no data wipe
flash csc.md5 = possible data wioe/phone reset
also id take out the sim 1st, flash and make it boot to home screen. then shut down phone insert sim and then power up again.
Click to expand...
Click to collapse
Alright i'll flash csc.md5 via odin rn with the rom i've listed above and see what happens

How to update to the latest Software via Odin - also for flashing/unbricking any firmware

Hello everyone! I made a tutorial regarding flashing the latest updates, flashing custom ROMs or unbricking your device:
Video guide:
Spoiler: Video
Steps:
1. Download and extract both Frija and Odin.
2. Launch Frija.
3. Check the "Auto" button. Write your device's Model Number and CSC
(Your model number is at Settings, then About phone).
4. Click on "Check Update".
5. Click on "Download" and choose a folder to save the firmware.
6. After the download is complete, extract the firmware .zip.
7. Launch Odin.
8. Click the "BL" button and select the file that starts with "BL_...".
9. Click the "AP" button and select the file that starts with "AP_...".
10. Click the "CP" button and select the file that starts with "CP_...".
11. Click the "CSC" button and select the file that starts with "HOME_CSC_..." (Selecting CSC_... will wipe your data!).
12. Turn off your phone.
13. Boot into Download Mode by holding both Volume Up + Volume Down buttons and then connecting it to your PC.
14. After booting into Download Mode, press the Volume Up button to continue.
15. Back to Odin, click "Start".
16. The flashing process will be over when "PASS" is shown in Odin and your phone reboots. You may close Odin and disconnect the phone from your PC then.
17. Congrats! You have successfully flashed the latest update to your device.
18. After your phone is on, turn it off again.
19. Boot into Recovery Mode by connecting to your PC and holding Volume Up + Power Button (+ Bixby Button).
20. Navigating with the Volume Buttons and selecting with the Power Button, go to "Wipe cache partition".
21. Select "Yes".
22. Select "Reboot system now".
Links:
Odin 3 by Samsung:
Index of /samsung-tools/
Frija by invmini:
[Tool] Frija - Samsung firmware downloader/checker
* * * PLEASE UNDERSTAND WHAT YOU ARE INSTALLING TO YOUR DEVICES AT ALL TIMES AND ME AND THE DEVELOPER ARE NOT RESPONSIBLE FOR ANY SORT OF DAMAGE TO YOUR DEVICE * * * Hey Guys :) Frija is a new tool (successor of now depreciated tool SamFirm)...
forum.xda-developers.com
CSCs Cheat Sheet:
List of Samsung Galaxy CSC Country Specific Product code and region they belong to
List of CSC Country Specific code for Samsung Galaxy & various countries, regions, network carriers, model numbers, variants phone belong to.
www.androidsage.com
I hope it helps you!

Hello, I am trying to switch from an Orange operator rom to a Samsung XEF rom, the problem is that when I flash everything goes normally but the rom does not flash and remains in Orange rom. Yet I have no error message.

For some reason I can't get it to detect my phone after plugging it in. Odd.

AlphAndroid said:
For some reason I can't get it to detect my phone after plugging it in. Odd.
Click to expand...
Click to collapse
Does this require the samsung USB drivers?

AlphAndroid said:
Does this require the samsung USB drivers?
Click to expand...
Click to collapse
Yes. Windows is supposed to automatically install the drivers when you plug in your phone.
You may also install them by installing Smart Switch for PC.

give me custom rom first, then will worry how to flash it

Is there any reason (that we know of) why flashing an AT&T device to the unlocked ROM wouldn't work this year as it has in years past?

abowlby said:
Is there any reason (that we know of) why flashing an AT&T device to the unlocked ROM wouldn't work this year as it has in years past?
Click to expand...
Click to collapse
I went from ATT to Verizon without problems. Flashed the Unlocked ROM first and it was fine.

Thanks dude! Removed 409 files verizon bloat with guild and u1 updates as well

[QUOTE = "naudmick, příspěvek: 84390799, člen: 4461390"]
Hello, I'm trying to switch from the Orange operator to the Samsung XEF rom ROM, the problem is that when I blink, everything goes normally, but the ROM doesn't blink and stays in the Orange rom. I need to make a mistake.
[/ CITÁT]

I have the same problem I have orx and I would like xez, dbt multicsc rom via Odin didn't help either
edit:
Problem solved, via Samkey application, S21 5G is already supported

For people who can't switch between csc in the same mult csc pack. OXM multi csc pack contains all the european generic and network branded firmware (csc) so if You are at SFR (part of OXM multi pack), and flash it with BTU (part of OXM multi pack) the SFR will stay. What you need to do is to flash it with different multi csc pack (just see what packs are available for your model), then flash it back with OXM multi pack, and it should switch to some generic csc, then if you instert your sim card it should ask you if you want to customize your phone to the inserted sim card and it will change your csc to the one you want.
EDIT. It works with other models as well, usually there is a domain language in each multi csc pack, and for flagship models it's usually DBT or BTU, for cheaper phones it's usually a langauge where the phone sells the most so for some A series models it's either ROM or XEO or XCZ

sivuha0101 said:
For people who can't switch between csc in the same mult csc pack. OXM multi csc pack contains all the european generic and network branded firmware (csc) so if You are at SFR (part of OXM multi pack), and flash it with BTU (part of OXM multi pack) the SFR will stay. What you need to do is to flash it with different multi csc pack (just see what packs are available for your model), then flash it back with OXM multi pack, and it should switch to some generic csc, then if you instert your sim card it should ask you if you want to customize your phone to the inserted sim card and it will change your csc to the one you want.
EDIT. It works with other models as well, usually there is a domain language in each multi csc pack, and for flagship models it's usually DBT or BTU, for cheaper phones it's usually a langauge where the phone sells the most so for some A series models it's either ROM or XEO or XCZ
Click to expand...
Click to collapse
Thanks for that!
I am from Brazil and wanted to install my regional stock ROM but everytime I did it, it went back to my carrier's ROM.
What I did in this case was installing an OXM csc (the german DBT) and then trying again with my stock regional ROM (ZTO).
Removed my SIM card and didn't connect to wifi untill I was sure the stock ROM sticked to the phone.
PS: If anyone reading wants a rom from the OXM multipack and is having troubles, try using the Brazilian ZTO stock rom and then go back to yours.

Alvincp said:
Thanks for that!
I am from Brazil and wanted to install my regional stock ROM but everytime I did it, it went back to my carrier's ROM.
What I did in this case was installing an OXM csc (the german DBT) and then trying again with my stock regional ROM (ZTO).
Removed my SIM card and didn't connect to wifi untill I was sure the stock ROM sticked to the phone.
PS: If anyone reading wants a rom from the OXM multipack and is having troubles, try using the Brazilian ZTO stock rom and then go back to yours.
Click to expand...
Click to collapse
That's true. ZTO is part of a multi csc pack OWO, so it will work for OXM. Good job mate

My S21 Ultra 5G from AT&T is somehow not getting updates and seems to be stuck on ATLF firmware with the December 1, 2020 security patch. Called AT&T...they blamed Samsung and sent me to Samsung. Samsung blamed AT&T and wants me to travel 50 miles away to a Ubreakifix store (official Samsung repair center). Today I called again and AT&T had me factory reset the phone with the result being the same - - no update - software is up to date.
Frija seems to be downloading the newest AUC8 firmware when I put in the model of SM-G998U with ther correct US code which I hope is the AT&T rom.
Is the firmware from Frija safe?

sivuha0101 said:
For people who can't switch between csc in the same mult csc pack. OXM multi csc pack contains all the european generic and network branded firmware (csc) so if You are at SFR (part of OXM multi pack), and flash it with BTU (part of OXM multi pack) the SFR will stay. What you need to do is to flash it with different multi csc pack (just see what packs are available for your model), then flash it back with OXM multi pack, and it should switch to some generic csc, then if you instert your sim card it should ask you if you want to customize your phone to the inserted sim card and it will change your csc to the one you want.
EDIT. It works with other models as well, usually there is a domain language in each multi csc pack, and for flagship models it's usually DBT or BTU, for cheaper phones it's usually a langauge where the phone sells the most so for some A series models it's either ROM or XEO or XCZ
Click to expand...
Click to collapse
hi there
I have done this recently, perhaps with a slight fail on my sight, since i updated to the latest OXM pack, since i wanted to switch to DBT from DTM (german telekom) without reading this thread and your post first. So my phone didn't switch from DTM to DBT. until yesterday i had to wait for the updated security patch for OWO pack to switch. So all went fine and i switched from DTM OXM to OWO and back to OXM again.
But basically here starts my problem (if it is a problem, not sure yet):
My phone switched not to DBT, instead it went to EUX, which i guess is the generic code for complete EU countries? i am not sure, since i couldn't find the sales code or CSC for this anywhere tbh. i have two SIM prepaid SIM cards from a third party o2 contractor, so normally (i have done it on my Note 10 plus), like you mentioned, it should ask you to customize your phone and switch to DBT, but for me it simply doesn't ask or go to DBT at all. It simply keeps the EUX. Which i would not have a problem with, when i get regular updates with it like i would on DBT.
If anyone could give me a hint how to change to DBT or what i did wrong, i would appreciate the help. If EUX is fine for getting updates, i am also fine with that, if someone can confirm this. on OWO the software updater said please contact a samsung service center, since i have german SIMs in the phone, but with OXM package and CSC on EUX currently it just says "software is up to date" so it can connect to the update servers if that helps.
A short pm would be appreciated or maybe some help from an experienced user (more than me lol) via telegram as well.
Cheers
Mike

Oy, when I try to run frija, it tells me I need to have Visual c++ 2008 installed?!
EDIT: Finally found the download for it, but Frija doesn't seem to have firmware for the S21+

I was working with someone to find a way to remove Retail Mode from our S21 (SM-G991U1 XAA), and when using Odin to flash, we accidentally used the same firmware BL file for every section of the install. Now the phone is stuck in download mode, and we can't find a firmware download with replacement AP or CP files. Only a single BL .md5 file, or a set of files that don't seem to fix the problem. I found a link here on the forums to what appears to be exactly what we need, but it takes hours to download for some reason, and then fails partway through each time. Always at a different point in the download, too. Sometimes it gets to 2.5GB, other times 3.7GB, but never the whole file. That link is over in this thread:
G991U and G991U1 Firmware Links and Flashing Discussion Here
This was the link I followed:
U1 firmware
Any thoughts? Any help getting pointed in the right direction would be much appreciated. !

thank you so much , what CSC country has Call recording setting ?

Bofahad said:
thank you so much , what CSC country has Call recording setting ?
Click to expand...
Click to collapse
I suggest Thailand (THL).

[Guide] How to convert s10-g973N to sm-g973f, change csc from skc to koo or any another, fix emergency calls only. No need of paid apps, boxes etc.

**********This is first time am posting a guide so pardon me. *******
********As usual am not responsible for anything that happens to your phone.*******
*****Am not claiming ownership of the above technique, its what worked for me*****
I saw many posts here about people struggling to change csc from skc to koo or international***
Others had issue with their phone suddenly lost network and just displays emergency calls only****
so I have s10 sm-g973n which had csc as koo then flashed skc my mistake. The phone booted with annoying skc boot logo, and branded junk from the carrier. Then one morning the phone couldn't connect to gsm network!
I tried all manner of things to fix it. Rooted with magisk, flashed custom rom nothing.
Tried samkey to change csc still nothing. modified odin in flashing multi csc rom nothing.
Got some luck in changing csc by editing efs/imei/mps_code.dat using root explorer, text editor and vola the carrier junk disappeared. But still no network.
was told only way is to use z3x box or chimera to patch certificate but didn't give up. I posted question here in xda but no guide or response.
But that gave me an idea of what could be the issue- corrupt efs that needs the certificate to be patched. so got keyword.
After watching many YouTube videos I came across a video about a rom that has certificate patched. Just flash with odin and done!
I downloaded and followed the instructions. The phone booted up fine and after going through initial setup the network was back!
Not only did the network came back but the model changed to F, csc became oxm! You can now use tools like Samfw from too to change csc to your local region.
Later in the day, will be flashing firmware with my region csc.
Here is the link to the rom:
https://mega.nz/file/LLpDQJQS#HP6h9qrPWseyHR66s9ClgxjBdekzc4fHLqs8UlDJIM4
And here is the video:

Thanks for your post. I think before do it we need back up all anything

When we upload this rom to my phone, can my SIM 2 work normally ? Because i saw 2 IMEI in setting bro ? Thanks

sanguine9x said:
Thanks for your post. I think before do it we need back up all anything
Click to expand...
Click to collapse
Yes absolutely. Thanks for the reminder.

sanguine9x said:
When we upload this rom to my phone, can my SIM 2 work normally ? Because i saw 2 IMEI in setting bro ? Thanks
Click to expand...
Click to collapse
Yes sim 2 will work. And after completing flash stock rom for security reasons. Because the above rom is rooted and modified we don't know how secure it is. after network certificates are patched now flash a stock rom from eg sammobile or samfw etc.

When i flash this file the storage becomes 64gb

Hey bro have u found any android 12 rom for g973N ???

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Bashir22 said:
Yes sim 2 will work. And after completing flash stock rom for security reasons. Because the above rom is rooted and modified we don't know how secure it is. after network certificates are patched now flash a stock rom from eg sammobile or samfw at will the
Click to expand...
Click to collapse
Bashir22 said:
Yes sim 2 will work. And after completing flash stock rom for security reasons. Because the above rom is rooted and modified we don't know how secure it is. after network certificates are patched now flash a stock rom from eg sammobile or samfw etc.
Click to expand...
Click to collapse
will the network work after returning to stock rom bro ?

Zuzillk said:
When i flash this file the storage becomes 64gb
Click to expand...
Click to collapse
Did you find a fix for that? For me the internal memory become 32Gb. Is there a solution for that?

I bought an S10 that turned out to be a G973N(SKC) flashed to G973F-D/S(XSG). I think they used this method and these files to do it. I can't get the OEM unlock option to come up. I've tried everything. I am starting to think that it's because of the XSG country code. I was going to try to change it XEU (Great Britain) in SamFW but it just stalls and doesn't do anything. Any suggestions on what I can do here to change the country code? I need that OEM unlock option so I can degoogle it.

Hi guys,
I have I big problem with this rom man, each time I restart my phone i lost network and I have to reflash your rom and factory reset the phone to get it back. It's like it's forbidden to restart the phone, otherwise my network get lost and IMEI Status NG again.. Is there a fix for that? Thank you. Is there a for that fix?
Or do you guys have a rom based on android 12 for g973n u7 converted to dual sim that can solve this IMei STATUS NG? I watched on youtube some guys that have it but it's not free or I can't pay that from here in my cluntry the poorest country in the world.
Thank you guys.