Develop Bugs

No way to debrand?

I've tried to debrand my phone by flashing open market firmware (XEO, Poland). I downloaded the newest version of Odin, flashed it but now my CSC under settings says OPV/OPV, OPV/EUX/OPV. OPV is my carrier's CSC, I'm wondering what that EUX is. I've looked it up on Google and it seems like I'm not alone, seems like Samsung changed something and older methods no longer work. The question is - will I still receive updates released for my carrier or I'm screwed for good? Phone INFO app says my active CSC is OPV. I'm running S20+ 5G (G986B) Exynos variant.

Same problem here, I've flashed it with XEO POLAND G986BXXU1ATBM firmware using Odin3 v3.14.1_3B_PatcheD, few minutes later it showed "PASS" and nothing changed. Same branded firmware after reboot..

It seems, that many more 'branded' CSCs are now part of Multi-CSC. For me, this is DTM (T-Mobile DE). It osed to not be part of multi-CSC but it is now part of OXM.
This means, that you can not force it anymore, as you already ARE having the exact same firmware with the 'branded' CSC. Just checked, OPV is in deed part of OXM now.
In the Ultra Section is a thread showing the CSCs belonging to OXM: https://forum.xda-developers.com/ga...galaxy-s20-ultra-g988b-firmwares-5g-t4060443/
I have not yet found out / gotten an answer from anybody how to change CSC. Samkey also is not supporting the S20 series ATM - dont know, if this will change.

Monnq said:
I've tried to debrand my phone by flashing open market firmware (XEO, Poland). I downloaded the newest version of Odin, flashed it but now my CSC under settings says OPV/OPV, OPV/EUX/OPV. OPV is my carrier's CSC, I'm wondering what that EUX is. I've looked it up on Google and it seems like I'm not alone, seems like Samsung changed something and older methods no longer work. The question is - will I still receive updates released for my carrier or I'm screwed for good? Phone INFO app says my active CSC is OPV. I'm running S20+ 5G (G986B) Exynos variant.
Click to expand...
Click to collapse
What I have worked out is that when you flash a multi-CSC firmware file you end running the CSC one letter earlier in the alphabet out of the. Available multi-CSC list
E.g. I had a VOD branded S105G and flashed BTU firmware, and ended up with TEL CSC
I also tried flashing BTU on an H3G branded A70 and ended up with EVF CSC
The original branded product CSC also never changes
---------- Post added at 11:32 AM ---------- Previous post was at 11:30 AM ----------
Andrino said:
Same problem here, I've flashed it with XEO POLAND G986BXXU1ATBM firmware using Odin3 v3.14.1_3B_PatcheD, few minutes later it showed "PASS" and nothing changed. Same branded firmware after reboot..
Click to expand...
Click to collapse
Enable Developer mode and set OEM Unlock to ON before trying to change CSC via ODIN Flash

This should not be necessary? Doesn't that trip Knox, despite original Samsung Firmware?

corwin_amber said:
It seems, that many more 'branded' CSCs are now part of Multi-CSC. For me, this is DTM (T-Mobile DE). It osed to not be part of multi-CSC but it is now part of OXM.
This means, that you can not force it anymore, as you already ARE having the exact same firmware with the 'branded' CSC. Just checked, OPV is in deed part of OXM now.
In the Ultra Section is a thread showing the CSCs belonging to OXM: https://forum.xda-developers.com/ga...galaxy-s20-ultra-g988b-firmwares-5g-t4060443/
I have not yet found out / gotten an answer from anybody how to change CSC. Samkey also is not supporting the S20 series ATM - dont know, if this will change.
Click to expand...
Click to collapse
Since now it's part of Multi CSC, does that mean I will receive updates faster? I can see other polish carrier's CSC are listed as single so I assume they are kind of separate firmware, am I right?

Honestly I do not know, if the respective CSC will be getting OTAs at the same time.
However, you can always flash manually with HOME_CSC, that is true.

corwin_amber said:
This should not be necessary? Doesn't that trip Knox, despite original Samsung Firmware?
Click to expand...
Click to collapse
Enable OEM unlock does not trip Knox. As long as you flash official Samsung firmware files in Odin Knox is never tripped
My own personal experience on S10 and above is you cannot flash a different CSC with OEM Unlock disabled
(Flash completes successfully but CSC doesn't change)

When changing from one e.g. branded csc to multi csc with the S10+, this worked fine without enabling oem unlock. Well, anyway. Flashing OXM multi CSC over OXM multi CSC will not change anything, right?

corwin_amber said:
When changing from one e.g. branded csc to multi csc with the S10+, this worked fine without enabling oem unlock. Well, anyway. Flashing OXM multi CSC over OXM multi CSC will not change anything, right?
Click to expand...
Click to collapse
I found that you have to be on a single CSC before flash to multi-CSC and also you don't always end up on the CSC you expected
e.g. Flash BTU on a VOD product and you end up on TEL CSC (one letter in alphabet below VOD) and not on BTU

did everyone succesed DEBRAND ?
i v got s20 ultra OPV(orange) and need XEO (official)

tak, poprzez samkey
Yes, with samkey

@0kti if you have any credits remain let me know please ( I will buy it )
I found link to our android com pl forum , thanks

Nope. Buy on ebay. It's cheap. 3 credits.
Tapatalk - SM-G986B

one credit please, somebody will share ?

raphaelx69 said:
one credit please, somebody will share ?
Click to expand...
Click to collapse
really lmao.. its literally a few bucks... chimera tool works great also but is a mpre expensive subscription but dont gotta kee0 buyin credits

SM-G781B - CSC: XSA (Generic Australia), OPS (Optus), VAU (Vodafone), or TEL (Telstra)

Hi Everyone,
I'm from Australia and recently bought a SM-G781B off eBay...
Turns out it was a UAE variant and Samsung Pay is all messed up.
I've flashed the phone a few times now using ODIN, trying to get the right CSC correct for Australia (G781BXXU2CUB5) for either of the following CSC's;
XSA (Generic Australia), OPS (Optus), VAU (Vodafone), or TEL (Telstra).
The issue I have is all the Stock Firmware's I've download and flashed keeps registering my CSC as XME (Malaysia)...
Phone INFO app doesn't even detect any other CSC's in the package
I've tried downloading the correct Firmware packs from the following and none gives me the correct CSC for Australia;
https://samfrew.com/
https://www.sammobile.com/
https://samfw.com/
App: Frija Firmware
Does anyone know why this is happening, or can upload/direct me to correct firmware either XSA, OPS (Optus), VAU (Vodafone), or TEL (Telstra)?
I'm totally at a loss now...
Any help would be much appreciated, thanks heaps in advance.

from what I've read recently Samsung has stopped people being able to switch as of android 11.
maybe... I stress MAYBE according to your countryman Hugh Jefferys, if there's a lower version of firmware on the same binary number you might be able to downgrade and then that might mean you can switch CSC.
this is someone who's never even tried changing CSC telling you this so your own research is obviously the only thing to put some faith in.
good luck

XSG (UAE) firmware is part of the OJM multi CSC, whereas XSA/OPS/TEL are part of the OLM multi CSC. This means that it is not possible to simply flash XSA in Odin as the multi CSCs are different, you would first have to use the combination ROM to change from OJM to OLM and then you would be able to flash any OLM CSC firmware, whether that be Australia, Singapore, Malaysia, or Thailand. I'm an Aussie myself, I got my phone from JB Hi Fi but switched it to Thailand CSC since XSA updates are horrendously slow (Samsung Pay does still work on Thailand CSC as does VoLTE/VoWiFi). For your case though, I'm afraid you are out of luck in terms of changing the multi CSC with the combination ROM, if you are on One UI 3.1 then the bootloader version is U2 whereas the combination ROM bootloader version is U1, so you would not be able to flash it anyway. Also, I tried to flash the combination ROM while my bootloader was still on U1 because I wanted to change from OLM to OXM (Romania CSC) for fastest updates, but Odin was not allowing the flash first because of "please get the approval to flash factory images (pit)" which I fixed, then "please get the approval to flash factory images (abl)" at which point I gave up. So as I said before, sorry but I don't think there's a lot you can do Unless a U2 bootloader version combination ROM is leaked which may or may not happen and you can get around the Odin not allowing you to flash it issues, the phone will unfortunately be stuck on UAE firmware (unless there are other countries part of OJM which you could switch to for faster updates).
Hopefully this helps you.

I have the same model! I changed my CSC but for some reason chat features in messaging app doesn't work now..other than that, all's good..

Skhux said:
I have the same model! I changed my CSC but for some reason chat features in messaging app doesn't work now..other than that, all's good..
Click to expand...
Click to collapse
Your software version is was originally XSA, so you wouldn’t have any issues flashing it with XSA and defaulting to XSA instead of another region. The CSC will automatically default back to XSA.
Mine unfortunately defaults to Malaysia XME when flashed with XSA firmware.

FedoraMaster420 said:
XSG (UAE) firmware is part of the OJM multi CSC, whereas XSA/OPS/TEL are part of the OLM multi CSC. This means that it is not possible to simply flash XSA in Odin as the multi CSCs are different, you would first have to use the combination ROM to change from OJM to OLM and then you would be able to flash any OLM CSC firmware, whether that be Australia, Singapore, Malaysia, or Thailand. I'm an Aussie myself, I got my phone from JB Hi Fi but switched it to Thailand CSC since XSA updates are horrendously slow (Samsung Pay does still work on Thailand CSC as does VoLTE/VoWiFi). For your case though, I'm afraid you are out of luck in terms of changing the multi CSC with the combination ROM, if you are on One UI 3.1 then the bootloader version is U2 whereas the combination ROM bootloader version is U1, so you would not be able to flash it anyway. Also, I tried to flash the combination ROM while my bootloader was still on U1 because I wanted to change from OLM to OXM (Romania CSC) for fastest updates, but Odin was not allowing the flash first because of "please get the approval to flash factory images (pit)" which I fixed, then "please get the approval to flash factory images (abl)" at which point I gave up. So as I said before, sorry but I don't think there's a lot you can do Unless a U2 bootloader version combination ROM is leaked which may or may not happen and you can get around the Odin not allowing you to flash it issues, the phone will unfortunately be stuck on UAE firmware (unless there are other countries part of OJM which you could switch to for faster updates).
Hopefully this helps you.
Click to expand...
Click to collapse
Thanks for the detailed reply.
From what I’ve tested, I have no issues with flashing from XSG OJM Multi to XSA OLM Multi. You can do this provided the FIrmware security number is the same as your current revision. You can’t however flash to a lower security value. See image attached.
The current firmware security value at the moment is “2” running One UI 3.1, Android 11. We can’t downgrade to any security firmware version “1” types with Android 10. If we could, then you can use multiple methods to manually change the CSC .i.e through Google Dialer or IMEI trick.
All the Firmwares at the moment are still Muti regional, unfortunately there doesn’t seem to be a way to change the CSC manually even though they are Multi regional.
All XSA firmwares I’ve downloaded and flashed will keep defaulting to XME as that’s the default unless my original CSC was XSA to begin with for it to detect.

I think the only option at the moment is to use SAMKEY, unless someone comes with with a new Android 11 method...
The other option is to root the phone and ADB to change the CSC, however this would trigger and break KNOX securities.
I did check Samkeys update log and they state it’s supported now, this method wouldn’t trigger KNOX;
VERSION 3.63.9 (PLANET EARTH'S FIRST)
- Added support for G780F (Galaxy S20 FE) ALL BIT
- Added support for G781B (Galaxy S20 FE 5G) ALL BIT
- Fixed FAIL(16) on Slow PC's
- Fixed FAIL(20) on G780F
They’re actually up to VERSION 3.71.9 now.
Might be worth a try.

kuri_2k said:
I think the only option at the moment is to use SAMKEY, unless someone comes with with a new Android 11 method...
The other option is to root the phone and ADB to change the CSC, however this would trigger and break KNOX securities.
I did check Samkeys update log and they state it’s supported now, this method wouldn’t trigger KNOX;
VERSION 3.63.9 (PLANET EARTH'S FIRST)
- Added support for G780F (Galaxy S20 FE) ALL BIT
- Added support for G781B (Galaxy S20 FE 5G) ALL BIT
- Fixed FAIL(16) on Slow PC's
- Fixed FAIL(20) on G780F
They’re actually up to VERSION 3.71.9 now.
Might be worth a try.
Click to expand...
Click to collapse
I can confirm SamKEY works on One UI 3.1, unfortunately it is paid but it does work. You can get an account for cheap from eBay with 1 credit on it which is all you need to do the CSC change. Using it I was able to change from XSA to THL (with no data wipe at all which really surprised me).

kuri_2k said:
Your software version is was originally XSA, so you wouldn’t have any issues flashing it with XSA and defaulting to XSA instead of another region. The CSC will automatically default back to XSA.
Mine unfortunately defaults to Malaysia XME when flashed with XSA firmware.
Click to expand...
Click to collapse
Trust me you wouldn't want XSA firmware anyway, the updates are terribly slow for it for the S20 FE 5G (not sure about 4G), it tends to get security patches a month after they should've came out, for example it got the March security patch in April which is pretty awful imo. I think it's the slowest CSC in general for the G781B, if you're on OLM multi CSC you're much better off switching to THL where the updates are a lot faster.

kuri_2k said:
Thanks for the detailed reply.
From what I’ve tested, I have no issues with flashing from XSG OJM Multi to XSA OLM Multi. You can do this provided the FIrmware security number is the same as your current revision. You can’t however flash to a lower security value. See image attached.
The current firmware security value at the moment is “2” running One UI 3.1, Android 11. We can’t downgrade to any security firmware version “1” types with Android 10. If we could, then you can use multiple methods to manually change the CSC .i.e through Google Dialer or IMEI trick.
All the Firmwares at the moment are still Muti regional, unfortunately there doesn’t seem to be a way to change the CSC manually even though they are Multi regional.
All XSA firmwares I’ve downloaded and flashed will keep defaulting to XME as that’s the default unless my original CSC was XSA to begin with for it to detect.
Click to expand...
Click to collapse
That's interesting, I didn't think it was possible to change between multi CSCs like this without the combination ROM (how you were able to switch from OJM to OLM). If you try to switch to an OXM multi CSC such as DBT or ROM from OLM multi CSC, what happens? Does it work? I'll be honest I never tried it myself but didn't have the motivation to try it anyway as I heard it wouldn't work.

FedoraMaster420 said:
That's interesting, I didn't think it was possible to change between multi CSCs like this without the combination ROM (how you were able to switch from OJM to OLM). If you try to switch to an OXM multi CSC such as DBT or ROM from OLM multi CSC, what happens? Does it work? I'll be honest I never tried it myself but didn't have the motivation to try it anyway as I heard it wouldn't work.
Click to expand...
Click to collapse
Hi There,
Yes, im sure it works provided the security firmware version is the same as I mentioned above.
I also changed to BTU to test.
I can't test for you any longer as I've returned the device for a refund. Will go buy an AUS XSA Variant.
Attached are the images of my original and changed firmware for your reference.

kuri_2k said:
Hi There,
Yes, im sure it works provided the security firmware version is the same as I mentioned above.
I can't test for you any longer as I returned the device for a refund. Will buy an AUS XSA Variant.
Attached are the images of my original and changed firmware for your reference.
Click to expand...
Click to collapse
That's very interesting, when you get the XSA variant can you try and see if you are able to flash a CSC such as ROM or DBT on the phone successfully using Odin? I would love to know if it was possible for this to work or not, I'm on THL myself after changing from XSA and did not think it was possible to switch to a different multi CSC (from OLM to OXM).

FedoraMaster420 said:
I can confirm SamKEY works on One UI 3.1, unfortunately it is paid but it does work. You can get an account for cheap from eBay with 1 credit on it which is all you need to do the CSC change. Using it I was able to change from XSA to THL (with no data wipe at all which really surprised me).
Click to expand...
Click to collapse
Wish I tried it before returning the device. The Australian stock only has 6GB RAM and no dual-sim....

kuri_2k said:
Wish I tried it before returning the device. The Australian stock only has 6GB RAM and no dual-sim....
Click to expand...
Click to collapse
Yeah that's true no 8GB variant sold here as far as I know not even on the Samsung website and we don't even get eSIM support either

Is there an update/workaround on this issue?
are there any methods that work without samKey?
Noticed that the dialer app that was once able to record calls, is now recording only me talking, since the latest OTA updates on the stock firmware (updated to oneUI 3.1 and Android 11).
I'm also on XSG (OJM) firmware and want to change CSC to enable call recording on galaxy S20 FE 5G (model G781B).
Would love to know how can it be done.
*my software info is attached in the screenshot
thanks!

VM57 said:
Is there an update/workaround on this issue?
are there any methods that work without samKey?
Noticed that the dialer app that was once able to record calls, is now recording only me talking, since the latest OTA updates on the stock firmware (updated to oneUI 3.1 and Android 11).
I'm also on XSG (OJM) firmware and want to change CSC to enable call recording on galaxy S20 FE 5G (model G781B).
Would love to know how can it be done.
*my software info is attached in the screenshot
thanks!
Click to expand...
Click to collapse
I'm sure by now you've already sorted this, but this is for future people with a need to change CSC
The SamFW FRP Tool can tell you which CSCs are available on your phone already, and can automatically have the CarrierPreConfig service trigger a CSC update. Only need to enable USB Debugging. No root, no reinstall.
But if your phone doesn't have the CSC you need already, download Frija, or another firmware download tool, you'll be able to download and install an OXM Multi CSC firmware (such as XSA, OPS, TEL or VAU), and install it via ODIN tool.
Be sure to select HOME_CSC to keep your data, and backup first.

Peterepeat87 said:
I'm sure by now you've already sorted this, but this is for future people with a need to change CSC
The SamFW FRP Tool can tell you which CSCs are available on your phone already, and can automatically have the CarrierPreConfig service trigger a CSC update. Only need to enable USB Debugging. No root, no reinstall.
But if your phone doesn't have the CSC you need already, download Frija, or another firmware download tool, you'll be able to download and install an OXM Multi CSC firmware (such as XSA, OPS, TEL or VAU), and install it via ODIN tool.
Be sure to select HOME_CSC to keep your data, and backup first.
Click to expand...
Click to collapse
Thank you, mate! I have just registered here specifically to thank you You really were the last random post I found in the internet that helped me to solve this unflashable state of my S9. Thank you again! <O

Question How Change CSC Korean Z Fold3 SM-F926N?

I just bought the Z Fold3 from korea its unlocked but it has the annoying korean bloatware i would really like to change the CSC from SKC to KOO please help

Were you able to solve this?
Having the same issue. Downloaded KOO firmware from sammobile and flashed it but still have the same skc firmware with all the bloat.

Jaodidyouknow said:
I just bought the Z Fold3 from korea its unlocked but it has the annoying korean bloatware i would really like to change the CSC from SKC to KOO please help
Click to expand...
Click to collapse
Just download the latest Korean KOO below link
and flash in Odin3 v3.14.1_3B_PatcheD
https://forum.xda-developers.com/t/patched-odin-3-13-1.3762572/
Download Samsung Galaxy Z Fold 3 SM-F926B firmware
Download the latest Samsung firmware for Galaxy Z Fold 3 with model code SM-F926B. Check out our free download or super fast premium options.
www.sammobile.com
Home CFC will not wipe your data normal CFC will wipe it you want to wipe it

I downloaded patched ODIN and flashed the latest KOO firmware available for SM-F926N. Nothing changed at all. The phone still has all the bloat and SK Telecom settings menu options.
Not sure where I am going wrong.

akash31 said:
I downloaded patched ODIN and flashed the latest KOO firmware available for SM-F926N. Nothing changed at all. The phone still has all the bloat and SK Telecom settings menu options.
Not sure where I am going wrong.
Click to expand...
Click to collapse
This is not possible now AFAIK, I have tried to change the same on s21 ultra nothing worked. I even tried samkey ...money waste.
Only solution is root and change using phone info.

You can change csc to KOO however I am still facing network issues in India. Trying to find if somehow I can get to INU csc without root.

To change the CSC on your Korean Z Fold3 SM-F926N, you'll need to follow these steps: [provide steps here].
It's fairly easy to change the CSC on your Z Fold3. Just make sure to follow a reliable guide and backup your data before proceeding.
If you're looking to change the CSC on your Korean Z Fold3 SM-F926N, it's important to understand the potential risks involved. Only attempt this if you're confident in your technical abilities or seek assistance from a professional.

Change CSC/different region note 10+

Hello, I currently have an SM-N976N.
I bought refurbished and live in Ireland.
I am looking for a compatible firmware that's not Korean but not having much luck. I can't flash anything in Odin except n976n firmware, and even that didn't seem to get rid of the sky telecom provider bloatware and branding.
I can provide CSC etc if anyone thinks they can help! Looking for something like a global or UK Ireland Unlocked like the B...
tried to flag KOO firmware...I used CSC as opposed to home Csc but I also used userdata file in Odin as well.
The sk splash screen and bloatware is still present.. There was a warning or info message on phone after I flashed, and then it rebooted again. I couldn't read it as it was in Korean.

Also, if there's no way to change to a euro firmware, is there any way to change bootloader/recovery/download language?

Voidstudios said:
Also, if there's no way to change to a euro firmware, is there any way to change bootloader/recovery/download language?
Click to expand...
Click to collapse
Hello, try this firmware, you can convert your N976N to N976B, none of the files are tested by me, let me know if you had any luck successfully flashing your phone.
N976N OS12 OneUI 4.1 DualSIM AutoPatch

Thanks, are these official firmwares?

Voidstudios said:
Thanks, are these official firmwares?
Click to expand...
Click to collapse
Yes they are official firmwares but are modified for converting N976N to N976B global dual sim

OK just concerned about tripping knox

Voidstudios said:
OK just concerned about tripping knox
Click to expand...
Click to collapse
Replaced the links with latest firmware I found, this also uses XSG CSC, please flash this firmware and let me know if it works
N976N OS12 OneUI 4.1 DualSIM AutoPatch

Question Korean Z Fold 4 Firmware Change

Hello. I just got a Korean Z Fold 4 and now I was wondering if I could safely change the firmware to the Indian firmware. Any guidance for the same would be highly appreciated. Thanks.
Model Number- SM-F936N

What are the benefits of doing this?

The only reason why I wanted to do it because I could not use certain apps and certain pre-loaded SKT mobile apps were installed which I could not delete.

yzp2001 said:
The only reason why I wanted to do it because I could not use certain apps and certain pre-loaded SKT mobile apps were installed which I could not delete.
Click to expand...
Click to collapse
Have you tried changing your csc to KOO which is unbranded using the samfw tool? https://samfw.com/blog/samfw-frp-tool-1-0-remove-samsung-frp-one-click
Not sure if you can try and change it to an Indian CSC of your choice. But you can try changing your csc first to KOO first which will remove those bloat and restrictions a carrier csc has.

Abaddon said:
Have you tried changing your csc to KOO which is unbranded using the samfw tool? https://samfw.com/blog/samfw-frp-tool-1-0-remove-samsung-frp-one-click
Not sure if you can try and change it to an Indian CSC of your choice. But you can try changing your csc first to KOO first which will remove those bloat and restrictions a carrier csc has.
Click to expand...
Click to collapse
I heard that flashing another variant csc will lead to hard brick.

Segnale007 said:
I heard that flashing another variant csc will lead to hard brick.
Click to expand...
Click to collapse
flashing another firmware variant could lead to a soft brick. Changing just the CSC wont brick your device

yzp2001 said:
Hello. I just got a Korean Z Fold 4 and now I was wondering if I could safely change the firmware to the Indian firmware. Any guidance for the same would be highly appreciated. Thanks.
Model Number- SM-F936N
Click to expand...
Click to collapse
I have the same model and I can’t use 5G on this anyway to use 5G