No way to debrand? - Samsung Galaxy S20 / S20+ / S20 Ultra Questions &

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

Related

Change CSC without ROOT

Hi
how can i change csc code without root the device?
KingMKH said:
Hi
how can i change csc code without root the device?
Click to expand...
Click to collapse
You have to choose the correct ROM first. So if your phone is SM-A505F you need that ROM. Not recommended to use other ROMs like SM-A505 FN, G etc.
Once you have the correct ROM (must be newer than your current) use Odin 3.13 or newer to flash your phone . before flashing do back up and then remove all accounts!!! Then remove your SIM and memocard and do hard reset. Connect to Odin in download mode and flash. Wait till its completely finished and boot up your phone. 1st boot can take up to 10 minutes, once you see the Start screen insert the SIM card from desired region and let the phone restart again.
My phone for some reason picked up CAC product code (Uzbekistan). Flashed latest ROM inserted my Vodafone SIM and after restart my phone was on BTU (UK unbranded).
is flashing different CSC ROM will trip Knox
I my case this method for FN version did not worked any different way to do it?
Adooni said:
is flashing different CSC ROM will trip Knox
Click to expand...
Click to collapse
No it wont trip knox as long as you are flashing official samsung firmware.
OK I investigate a bit today
looks like I was able to change CSC from ROM to FTM (Freanch Orange) using brand Orange from Poland (OPV) - all was done with JUN patch the same patch level files
I would like to change from ROM to XEO (Poland unbranded) and for this I did not found any way to work
Adooni said:
OK I investigate a bit today
looks like I was able to change CSC from ROM to FTM (Freanch Orange) using brand Orange from Poland (OPV) - all was done with JUN patch the same patch level files
I would like to change from ROM to XEO (Poland unbranded) and for this I did not found any way to work
Click to expand...
Click to collapse
I think that it's somehow let you change the CSC only one time... I recalling that I was able to do it on my A50 and A70 but only one time...
in my case it is more like I can change to branded CSC like orange or T-Mobile ( did this few time) but it not give me Poland as a country
I cannot change to unbranded CSC like XEO - it always show ROM as active CSC (softwanre CSC it is showing XEO) but for example news I have from Romania
Adooni said:
in my case it is more like I can change to branded CSC like orange or T-Mobile ( did this few time) but it not give me Poland as a country
I cannot change to unbranded CSC like XEO - it always show ROM as active CSC (softwanre CSC it is showing XEO) but for example news I have from Romania
Click to expand...
Click to collapse
typically it will remain as whatever sim you have in the phone.. there are tricks u can do.. id search some more as theres many csc related threads.. also make sure that csc u want is actually included on the device already since if it doesnt exist then well you cant use it until u get the right csc..
Rexton270 said:
I think that it's somehow let you change the CSC only one time... I recalling that I was able to do it on my A50 and A70 but only one time...
Click to expand...
Click to collapse
Please how did you change your A70 CSC
Adooni said:
OK I investigate a bit today
looks like I was able to change CSC from ROM to FTM (Freanch Orange) using brand Orange from Poland (OPV) - all was done with JUN patch the same patch level files
I would like to change from ROM to XEO (Poland unbranded) and for this I did not found any way to work
Click to expand...
Click to collapse
Please I want to change my A705FN/DS CSC, please teach me how to do it.
---------- Post added at 01:51 PM ---------- Previous post was at 01:42 PM ----------
Adooni said:
OK I investigate a bit today
looks like I was able to change CSC from ROM to FTM (Freanch Orange) using brand Orange from Poland (OPV) - all was done with JUN patch the same patch level files
I would like to change from ROM to XEO (Poland unbranded) and for this I did not found any way to work
Click to expand...
Click to collapse
I want to change my A705FN/DS CSC, TEACH how to go about it.
jonakwofie13 said:
Please how did you change your A70 CSC
Click to expand...
Click to collapse
You didn't say what region you want. In my case I was after UK (BTU) or Germany (DBT).
Do hard reset (sim and memory card remove). Turn on phone without sim and wait until it says No sim inserted. Insert the sim from region or country you want to have on your phone.
Make sure you have multi CSC ROM. In my case it was ok. Changed from CAC to BTU.
Rexton270 said:
You didn't say what region you want. In my case I was after UK (BTU) or Germany (DBT).
Do hard reset (sim and memory card remove). Turn on phone without sim and wait until it says No sim inserted. Insert the sim from region or country you want to have on your phone.
Make sure you have multi CSC ROM. In my case it was ok. Changed from CAC to BTU.
Click to expand...
Click to collapse
I'm in Africa specifically Ghana. But I don't have LTE only in my network mode so wanted to switch to a different CSC.
jonakwofie13 said:
I'm in Africa specifically Ghana. But I don't have LTE only in my network mode so wanted to switch to a different CSC.
Click to expand...
Click to collapse
There's no LTE/4G only mode. So if this is what you want no need for flashing different ROM.
jonakwofie13 said:
I'm in Africa specifically Ghana. But I don't have LTE only in my network mode so wanted to switch to a different CSC.
Click to expand...
Click to collapse
This from my settings. International model/no branding
Rexton270 said:
This from my settings. International model/no branding
Click to expand...
Click to collapse
Thanks bro
I did not successed in changing CSC from ROM to XEO - I tryied all ways I found in web
Adooni said:
I did not successed in changing CSC from ROM to XEO - I tryied all ways I found in web
Click to expand...
Click to collapse
You need multi CSC ROM. First time boot up without sim and memory card. When boot finished will tell you insert sim. I think Samsung set up phones to allow ONLY one change and only first time...
Rexton270 said:
You need multi CSC ROM. First time boot up without sim and memory card. When boot finished will tell you insert sim. I think Samsung set up phones to allow ONLY one change and only first time...
Click to expand...
Click to collapse
I have same problem. Which multirom rom should I use for my version and where to find it? Im located in Serbia.
Thanks

Debranding Samsung Galaxy S20 5G (SM-G981B) phone

Hi All,
I have read that to debrand a Samsung Galaxy S20 phone (mine is SM-G981B) you can't just do a straight flash with Odin using debranded firmware and that you instead need to first change the CSC using SamKey. However my issue is that the CSC for the carrier my phone is currently on (United Kingdom EE) seems to be the same as debranded firmware (United Kingdom BTU). You can see here: sammobile.com/samsung/galaxy-s20/firmware/SM-G981B/BTU they both have the same CSC (G981BOXM1ATCT).
I also came across this guide: samsungsfour.com/tutorials/how-to-install-stock-rom-on-galaxy-s20-s20-plus-s20-ultra-s20-5g.html for debranding, however without any other sources to back it up, I am a bit reluctant to try it out in case it causes any issues.
Any help with this would be greatly appreciated thanks.
Rave7 said:
Hi All,
I have read that to debrand a Samsung Galaxy S20 phone (mine is SM-G981B) you can't just do a straight flash with Odin using debranded firmware and that you instead need to first change the CSC using SamKey. However my issue is that the CSC for the carrier my phone is currently on (United Kingdom EE) seems to be the same as debranded firmware (United Kingdom BTU). You can see here: sammobile.com/samsung/galaxy-s20/firmware/SM-G981B/BTU they both have the same CSC (G981BOXM1ATCT).
I also came across this guide: samsungsfour.com/tutorials/how-to-install-stock-rom-on-galaxy-s20-s20-plus-s20-ultra-s20-5g.html for debranding, however without any other sources to back it up, I am a bit reluctant to try it out in case it causes any issues.
Any help with this would be greatly appreciated thanks.
Click to expand...
Click to collapse
Mate, all you need to do is change the csc to BTU in order to debrand. EVR and BTU csc are part of the same multi csc, however change your csc to BTU if you do not want any carrier bloatware or boot image etc.
So the only way to debrand is to use samkey? There is not a free/not payed alternative?
west2cool said:
Mate, all you need to do is change the csc to BTU in order to debrand. EVR and BTU csc are part of the same multi csc, however change your csc to BTU if you do not want any carrier bloatware or boot image etc.
Click to expand...
Click to collapse
Thank you very much, I'll give that a go.
denzel09 said:
So the only way to debrand is to use samkey? There is not a free/not payed alternative?
Click to expand...
Click to collapse
Denzel09, you can buy a single SamKey credit on eBay for £2.25 just to let you know. Search for SamKey, sort by cheapest and set "Item Location" to Worldwide.

Change Samsung Members and Galaxy Store language while keeping my CSC

I'm using an Israeli SIM so my CSC is ILO.
But I don't want any of the offers/menus to be in Hebrew I want them in English while keeping my ILO CSC for the native recording option on the dialer.
Is there any way to trick those apps ?
TnxAlot
No there isn't, apps such as these use the phones firmware to determine region, it cannot be changed manually, hence why people who import Samsung devices often cannot use Samsung Pay, your only option is to flash a firmware from your region, however keep in mind you can't flash Exynos firmware to Snapdragon or vice versa
TheInfiniteAndroid said:
No there isn't, apps such as these use the phones firmware to determine region, it cannot be changed manually, hence why people who import Samsung devices often cannot use Samsung Pay, your only option is to flash a firmware from your region, however keep in mind you can't flash Exynos firmware to Snapdragon or vice versa
Click to expand...
Click to collapse
What do you mean by "your only option is to flash a firmware from your region"?
I flashed a DBT (germany) OXM (multi-csc) ROM.
It took the CSC automatically from my SIM carrier I can't do anything about that or can I?
TnxAlot
rypz79 said:
I flashed a DBT (germany) OXM (multi-csc) ROM.
It took the CSC automatically from my SIM carrier I can't do anything about that or can I?
Click to expand...
Click to collapse
OXM takes the information from the SIM to determine CSC however if you flash a specific firmware that isn't Multi then I think your CSC ignores this, I'm not 100% certain however so I'd do a little research first, sorry I couldn't be of further assistance

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:

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.
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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.
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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.
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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.
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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).
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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....
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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.
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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

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