Changing csc - Samsung Galaxy S20 / S20+ / S20 Ultra Questions &

Recently i bought a snapdragon s20+(g9860) hong kong model.
I want to change my csc to european csc to get faster updates.
Is this possible?
Verstuurd vanaf mijn SM-G9860 met Tapatalk

No.

Yes you can change csc check this thread out
https://forum.xda-developers.com/ga...faster-performance-atd3-t4089413/post82423727

00mpollard said:
Yes you can change csc check this thread out
https://forum.xda-developers.com/ga...faster-performance-atd3-t4089413/post82423727
Click to expand...
Click to collapse
You qoute is misleading.
The guy you qouted has a UK device and changed his CSC from branded Uk to unbranded UK, which both are on his device..
This guy here has a HK device and wants to to a European CSC. HK devices dont have European CSC on them, so he cant change to them.
Even if he roots the device, copies the CSC he wants from an EU decive to his and managed to change his CSC with wiping, not only he wont get quicker updates, he wont het updates at all because his CSC wont be an official CSC of a HK device

firefds said:
You qoute is misleading.
The guy you qouted has a UK device and changed his CSC from branded Uk to unbranded UK, which both are on his device..
This guy here has a HK device and wants to to a European CSC. HK devices dont have European CSC on them, so he cant change to them.
Even if he roots the device, copies the CSC he wants from an EU decive to his and managed to change his CSC with wiping, not only he wont get quicker updates, he wont het updates at all because his CSC wont be an official CSC of a HK device
Click to expand...
Click to collapse
My apologies I guess I misunderstood region csc changes. Thank you for the clarification. I am new to Samsung devices so it's a learning curve! Appreciate the detailed reply

Ok guys no problem....i guess this is the downside of buying a snapdragon....but the only one.
Love this phone!
Verstuurd vanaf mijn SM-G9860 met Tapatalk

hello
PRT -- XEO
If it's possible send to me too, thanks very much

I have Exynos variant with MEO (Portugal) csc. Is it possible to change to ITV (Italian) csc?

denzel09 said:
I have Exynos variant with MEO (Portugal) csc. Is it possible to change to ITV (Italian) csc?
Click to expand...
Click to collapse
Try this - Go to "Settings" then "About phone". Write down your IMEI Number. Open dialer and enter *#272*IMEInumber# (In the thread replace IMEInumber with your actual IMEI Number). Press dial, you should see a screen with the list of available CSC codes for your device. Select the CSC that you want and tap the Install option. This method works on the S10, it should work on the S20 as well.

varcor said:
Try this - Go to "Settings" then "About phone". Write down your IMEI Number. Open dialer and enter *#272*IMEInumber# (In the thread replace IMEInumber with your actual IMEI Number). Press dial, you should see a screen with the list of available CSC codes for your device. Select the CSC that you want and tap the Install option. This method works on the S10, it should work on the S20 as well.
Click to expand...
Click to collapse
Does not work on S20.

Orphee said:
Does not work on S20.
Click to expand...
Click to collapse
Worked on my S20 Ultra (Canada).

varcor said:
Try this - Go to "Settings" then "About phone". Write down your IMEI Number. Open dialer and enter *#272*IMEInumber# (In the thread replace IMEInumber with your actual IMEI Number). Press dial, you should see a screen with the list of available CSC codes for your device. Select the CSC that you want and tap the Install option. This method works on the S10, it should work on the S20 as well.
Click to expand...
Click to collapse
Oh wow! i already used samkey and purchased some credits, dafaq

rajeshr said:
Worked on my S20 Ultra (Canada).
Click to expand...
Click to collapse
You have the Exynos variant, correct? I know it won't work on Snapdragon devices.

varcor said:
You have the Exynos variant, correct? I know it won't work on Snapdragon devices.
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Click to collapse
No, I have the Snapdragon version (SM-G988W).

rajeshr said:
No, I have the Snapdragon version (SM-G988W).
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Click to collapse
Wow! That's a first, wasn't aware the Snapdragon variant had a Multi-CSC, like OXM on Exynos devices. Is the list of CSC's mainly Canada's Branded Carriers? Post a screen shot if possible, thanks!

varcor said:
Wow! That's a first, wasn't aware the Snapdragon variant had a Multi-CSC, like OXM on Exynos devices. Is the list of CSC's mainly Canada's Branded Carriers? Post a screen shot if possible, thanks!
Click to expand...
Click to collapse
Yes, it seems like the list is primarily Canadian carriers although there are a few that I don't recognize.

rajeshr said:
Yes, it seems like the list is primarily Canadian carriers although there are a few that I don't recognize.
Click to expand...
Click to collapse
Makes sense, Samsung can sell the same device to all carriers. If it's modeled like OXM on Exynos variants once you insert a compatible SIM the CSC is automatically updated after startup. That's really good news, users can switch carriers without flashing new firmware. Curious if Branded US Models have the same option, I would think they do. Thanks for the info, appreciate it!

varcor said:
Makes sense, Samsung can sell the same device to all carriers. If it's modeled like OXM on Exynos variants once you insert a compatible SIM the CSC is automatically updated after startup. That's really good news, users can switch carriers without flashing new firmware. Curious if Branded US Models have the same option, I would think they do. Thanks for the info, appreciate it!
Click to expand...
Click to collapse
This is really strange btw, because i maked that but after insert a compatible SIM the CSC never automatically updated after startup

denzel09 said:
This is really strange btw, because i maked that but after insert a compatible SIM the CSC never automatically updated after startup
Click to expand...
Click to collapse
Interesting, did the dialer code I posted get you to the Preconfig Screen? Was the desired CSC on the list?

varcor said:
Interesting, did the dialer code I posted get you to the Preconfig Screen? Was the desired CSC on the list?
Click to expand...
Click to collapse
When i try that dialer code, i have Connection problem or USSD code not valid so nothing Preconfig Screen

Related

note 10+ 5G SM-N976N

Hi,
c
You have to use the same model to flash in Odin. 976B is not 976N.
You can flash the KOO firmware for 976N which is the unbranded version (I bought it myself at a Samsung shop in Seoul).
I tried to flash with 976B and got errors. I flashed with KOO 976N but srill i have brand of KT when i start the phone also some settings of KT.
No idea why KT still stays after flashing
minipac13 said:
I tried to flash with 976B and got errors. I flashed with KOO 976N but srill i have brand of KT when i start the phone also some settings of KT.
No idea why KT still stays after flashing
Click to expand...
Click to collapse
Right, because 976B is not the phone you have. You can't use a different model firmware.
Sounds like you need to change the CSC to KOO after boot up.
I used CSC for KOO byr still no lick
Let me know which CSC maybe i am doing something wrong
minipac13 said:
I used CSC for KOO byr still no lick
Let me know which CSC maybe i am doing something wrong
Click to expand...
Click to collapse
You said you flashed KOO firmware. That is not the same thing as switching CSC after booting up.
There is a phone menu to change the CSC. You need to do this, which will change the CSC setting on the EFS partition which is what you need to do.
Woow thank you for that. Now this is new and i didn't know it. Can you help me and let me know where to change CSC.
Thanks
*#272*IMEI# not working... i don't want to root also
minipac13 said:
*#272*IMEI# not working... i don't want to root also
Click to expand...
Click to collapse
you can try this:
https://forum.xda-developers.com/ga...de-how-to-change-s9-s9-csc-model-csc-t3870836
Kalm_Traveler said:
you can try this:
https://forum.xda-developers.com/ga...de-how-to-change-s9-s9-csc-model-csc-t3870836
Click to expand...
Click to collapse
no use and help from link since this was for combination firmware.
did you change ur CSC ? which method?
minipac13 said:
no use and help from link since this was for combination firmware.
did you change ur CSC ? which method?
Click to expand...
Click to collapse
The SM-N976N has 4 CSC options built-in. KOO is the unbranded Samsung code. There are 3 for the 3 major carriers in Korea: SK Telecom, kt Olleh, and LG U+
No I did not change my CSC because I bought my phone in a Samsung store in Seoul.
I have KT one , when i switch one says 5G and under screen KT.
also in setting. I am trying to find the way to change the CSC from KTC to KOO
Active KTC
Edit
Ohhh no way that bad
For me only Samsung pay ,5G, start up the phone, phone can't recognize my number rather than that everything else is perfect.
I am trying to find way to change CSC to KOO, hopefully will work
minipac13 said:
Ohhh no way that bad
For me only Samsung pay ,5G, start up the phone, phone can't recognize my number rather than that everything else is perfect.
I am trying to find way to change CSC to KOO, hopefully will work
Click to expand...
Click to collapse
Do you mean your N10+ doesn't connect to the 5G network even if it's present and working in your zone?
Yes i don't see 5G at all even covered in my country. Always LTE+
Weird.. where are you from?
Our model is 5G, I suppose SM-976B only is suitable for 5G networks over asian countries, hope someone could tell me I'm wrong...
vysus said:
Weird.. where are you from?
Our model is 5G, I suppose SM-976B only is suitable for 5G networks over asian countries, hope someone could tell me I'm wrong...
Click to expand...
Click to collapse
I don't know the specs of the B variant, but my N variant 5g worked in Korea just fine. Haven't been able to test it in the USA yet because T-Mobile doesn't have any 5g towers in my state yet.
In my country, UAE according to bands only N976N working since the are on same 5G band.
N976B isn't working with UAE network (5G). I bought and sold N976B.
Also now N976N is not working coz of carrier, KT from Korea.

Flashing S20+ SM-G9860

I recently obtained a Samsung S20+ SM-G9860. However, I am in the US and am intending to flash the AT&T firmware for the SM-G986U. When I try to do this, I get a secure check fail on the PIT file due to the differing model. Is there a way to circumvent this? The two models have identical hardware from what I can see.
Is it possible to do this, and what is the process for doing this if it is indeed possible?
You cannot flash a rom built for a snapdragon chipset on a phone with a exynos chipset
Be thankful there is that safety check built in. Lol
Sent from my SM-G988U1 using Tapatalk
tdevaughn said:
You cannot flash a rom built for a snapdragon chipset on a phone with a exynos chipset
Be thankful there is that safety check built in. Lol
Sent from my SM-G988U1 using Tapatalk
Click to expand...
Click to collapse
It's not Exynos, it's also a Snapdragon.
Oh, the Brazil variant. Still dont think it will work. They might be dual sim
Sent from my SM-G988U1 using Tapatalk
tdevaughn said:
Oh, the Brazil variant. Still dont think it will work. They might be dual sim
Sent from my SM-G988U1 using Tapatalk
Click to expand...
Click to collapse
It's the Hong Kong variant. It does appear to be a dual SIM, however.
YES PLEASE!! I need to change my S20+ Snapdragon SM-G986U firmware to SM-9860 too!!!
Sanctanimus said:
I recently obtained a Samsung S20+ SM-G9860. However, I am in the US and am intending to flash the AT&T firmware for the SM-G986U. When I try to do this, I get a secure check fail on the PIT file due to the differing model. Is there a way to circumvent this? The two models have identical hardware from what I can see.
Is it possible to do this, and what is the process for doing this if it is indeed possible?
Click to expand...
Click to collapse
YES PLEASE!! I need to change my S20+ Snapdragon SM-G986U firmware to Hong Kong SM-9860 firmware too! Any help please Samsung S20+ Snapdragons masters?!! :crying:
Sanctanimus said:
I recently obtained a Samsung S20+ SM-G9860. However, I am in the US and am intending to flash the AT&T firmware for the SM-G986U. When I try to do this, I get a secure check fail on the PIT file due to the differing model. Is there a way to circumvent this? The two models have identical hardware from what I can see.
Is it possible to do this, and what is the process for doing this if it is indeed possible?
Click to expand...
Click to collapse
The hardware isn't identical, SM-G986U is a Single SIM Device, your's is a Dual SIM.. TGY is the CSC in your device and even if you could flash SM-G986U Firmware the CSC would not change, it will still be TGY. If you're looking to get full AT&T call functionality on your device it's not possible as the CSC doesn't support AT&T compatibility. Firmware is CSC specific as well.
varcor said:
The hardware isn't identical, SM-G986U is a Single SIM Device, your's is a Dual SIM.. TGY is the CSC in your device and even if you could flash SM-G986U Firmware the CSC would not change, it will still be TGY. If you're looking to get full AT&T call functionality on your device it's not possible as the CSC doesn't support AT&T compatibility. Firmware is CSC specific as well.
Click to expand...
Click to collapse
But mine has two IMEI numbers though 1 for physical and another for esim, HOWEVER the esim option to add another QR code for another network is not visible. Its like the device is locked for VERIZON esim use only.
Oh well, guess gotta wait for another few month for newer updates to be able to use another network esim or firmware flashing that can enable this option soon...
x88888x said:
But mine has two IMEI numbers though 1 for physical and another for esim, HOWEVER the esim option to add another QR code for another network is not visible. Its like the device is locked for VERIZON esim use only.
Oh well, guess gotta wait for another few month for newer updates to be able to use another network esim or firmware flashing that can enable this option soon...
Click to expand...
Click to collapse
If your device is the SM-G986U it's a Single SIM Device which doesn't at this point doesn't support eSim. Does the SIM Management Screen actually display the word "eSim"? Share a photo please. The device is likely still locked by Verizon. What is your motivation to change the Firmware to SM-G9860, do you live in Hong Kong?
Im sorry unfortunately I cant post links for my screenshots or upload any pictures..
If your device is the SM-G986U it's a Single SIM Device which doesn't at this point doesn't support eSim. Does the SIM Management Screen actually display the word "eSim"? Share a photo please. The device is likely still locked by Verizon. What is your motivation to change the Firmware to SM-G9860, do you live in Hong Kong?[/QUOTE]
I bought my phone online.. When I start up my phone it says Verizon, but its unlocked though because I can use any country physical simcard. Like right now im using my local simcard in Malaysia. I live in Malaysia and the reason I want to flash rom my SM-G986U device to Hong Kong firmware is so that I can use any eSim network in my country for my other network phone number.... If its a software for eSim that I can get for firmware that will be very helpful. Because the main local Malaysian samsung s20+ 5G firmware model is base on Exynos 990 which I doubt will fit for my US phone model..
I don't think you can flash SM-9860 Firmware onto your device but even if you could you still won't have eSim capability. Mix and matching firmware typically has more success on Exynos International Variants since they are Multi-CSC Enabled Devices. So if you have a British CSC (VOD) you may have success flashing German Firmware (VD2) since both CSC's are already stored in the device however even then some call features may not work. Snapdragon Devices don't have Multi-CSC's and as mentioned previously the Firmware is CSC Specific, they're made for one another. IF you had an Unlocked Bootloader, which you don't, there may be a method to modify the CSC once you root the device.. I did follow a thread a couple of years back where a gal had some success modifying her CSC on a Snapdragon Device but I believe that was a Galaxy S8. Also, I'm still curious if the word "eSim" actually appears in the SIM Management Screen on your device.
varcor said:
I don't think you can flash SM-9860 Firmware onto your device but even if you could you still won't have eSim capability. Mix and matching firmware typically has more success on Exynos International Variants since they are Multi-CSC Enabled Devices. So if you have a British CSC (VOD) you may have success flashing German Firmware (VD2) since both CSC's are already stored in the device however even then some call features may not work. Snapdragon Devices don't have Multi-CSC's and as mentioned previously the Firmware is CSC Specific, they're made for one another. IF you had an Unlocked Bootloader, which you don't, there may be a method to modify the CSC once you root the device.. I did follow a thread a couple of years back where a gal had some success modifying her CSC on a Snapdragon Device but I believe that was a Galaxy S8. Also, I'm still curious if the word "eSim" actually appears in the SIM Management Screen on your device.
Click to expand...
Click to collapse
Damn.. that is some nice insights.. I read a thread somewhere too that US SM-G986U cannot and will not be able to enable its OEM or unlocked bootloader.. the eSim actually doesnt appear in the Sim Management Screen on my device. I really want to upload some links of the screenshot but for now I cant do anything as Im a new member.. I just have to wait for the network shop to open up to change my current esim card to physical simcard.. its been 2 months plus of this coronavirus lockdown and our network providers cant do much about it too..
Anyways I really appreciate the insights, like you said even if I could flash in Hong Kong SM-9860 in to my US SM-G986U, I might run into some software or calls dysfunctionalities..
Anyone got th atct update for the sm-g9880 yet? Seems the u.s has got this update before Asia?
x88888x said:
Damn.. that is some nice insights.. I read a thread somewhere too that US SM-G986U cannot and will not be able to enable its OEM or unlocked bootloader.. the eSim actually doesnt appear in the Sim Management Screen on my device. I really want to upload some links of the screenshot but for now I cant do anything as Im a new member.. I just have to wait for the network shop to open up to change my current esim card to physical simcard.. its been 2 months plus of this coronavirus lockdown and our network providers cant do much about it too..
Anyways I really appreciate the insights, like you said even if I could flash in Hong Kong SM-9860 in to my US SM-G986U, I might run into some software or calls dysfunctionalities..
Click to expand...
Click to collapse
u typically cannot flash hk/china firmware onto us devices bcuz those models r typically oem unlockable and they make sure ppl cant just flash the firmware to a u model and unlock tye bl.. theyre typically signed with dif keys and would most likely fail instantly to flash
elliwigy said:
u typically cannot flash hk/china firmware onto us devices bcuz those models r typically oem unlockable and they make sure ppl cant just flash the firmware to a u model and unlock tye bl.. theyre typically signed with dif keys and would most likely fail instantly to flash
Click to expand...
Click to collapse
Thank you I understand..:crying: now I feel like I wanna sell my Verizon unlocked phone ?
tdevaughn said:
Oh, the Brazil variant. Still dont think it will work. They might be dual sim
Sent from my SM-G988U1 using Tapatalk
Click to expand...
Click to collapse
Do you think i can flash the Korean firmware on the SM G9860 BRI?
iNexusVitto said:
Do you think i can flash the Korean firmware on the SM G9860 BRI?
Click to expand...
Click to collapse
Not possible, the only options are flashing the SM-G9860 China or Hong Kong FW.

SM-G9880 Flashing Question

I recently just bought a S20 Ultra that has a unlockable bootloader. A little while back, I had a Galaxy S9 that I could completely convert the entire device to U1. Is that even possible with this device ? To fully convert the CSC and bootloader ect, to a US model ?
cjegan2008 said:
I recently just bought a S20 Ultra that has a unlockable bootloader. A little while back, I had a Galaxy S9 that I could completely convert the entire device to U1. Is that even possible with this device ? To fully convert the CSC and bootloader ect, to a US model ?
Click to expand...
Click to collapse
That was then. Each model is specific to a region and can not be flash with software from another region. I.E you cannot flash G9880 with firmware from G988U or G988U1 or the other way around.
What exactly changed from the S9 to the S20 that made that impossible ?
west2cool said:
That was then. Each model is specific to a region and can not be flash with software from another region. I.E you cannot flash G9880 with firmware from G988U or G988U1 or the other way around.
Click to expand...
Click to collapse
cjegan2008 said:
What exactly changed from the S9 to the S20 that made that impossible ?
Click to expand...
Click to collapse
Any luck? I just got one in Canada and it only has 3g ad 4g so I was hoping I could flash a csc file.
So I attempted to edit the band config using QPST and QXDM, but I'm very unfamiliar with both programs and how to actually read and write information to the modem using those programs. Definitely not for the average user. Back in the days when devices had ESN numbers, I used to flash software using QPST and QXDM but there is a lot that has changed with those programs, and I wouldn't even know how to do that stuff today. If anyone has any knowledge about those two programs that can help me unlock all the US 5G bands for AT&T and Verizon that would extremely helpful.
dwhite011 said:
Any luck? I just got one in Canada and it only has 3g ad 4g so I was hoping I could flash a csc file.
Click to expand...
Click to collapse

Carrier firmware

I currently have the US s20Ultra unlocked model on ATT (don't foresee changing carriers). Currently I am missing features like VoLTE and VVM. What other features would I be missing if I stay on the unlocked firmware? Can I flash the ATT firmware to get those missing features? Can I flash back to unlock?
Thank you
What's the CSC on your device?
varcor said:
What's the CSC on your device?
Click to expand...
Click to collapse
I am not sure what I am looking for. Its currently on ATT/ATT.
Open your dialer, enter *#1234#, press the Dial Icon. You'll see CSC: G98??, the next 3 letters will be your device's CSC Code. Your Service Provider's CSC is "ATT" which is different than the CSC in your device. Whether or not you can change the CSC depends on your device's CSC. Device firmware is always configured for the specific, original CSC or Multi CSC's.
This post may be the best workaround.
https://forum.xda-developers.com/showpost.php?p=82444733&postcount=8
varcor said:
Open your dialer, enter *#1234#, press the Dial Icon. You'll see CSC: G98??, the next 3 letters will be your device's CSC Code. Your Service Provider's CSC is "ATT" which is different than the CSC in your device. Whether or not you can change the CSC depends on your device's CSC. Device firmware is always configured for the specific, original CSC or Multi CSC's.
This post may be the best workaround.
https://forum.xda-developers.com/showpost.php?p=82444733&postcount=8
Click to expand...
Click to collapse
My CSC: G988U1OYM1ATE4
garyHal said:
My CSC: G988U1OYM1ATE4
Click to expand...
Click to collapse
Your device has Multiple CSC's which are included in OYM so you should be able to change your CSC to ATT, which is the CSC for AT&T.
Go to "Settings" then "About phone". Write down your IMEI Number. Open dialer and enter *#272*IMEInumber# (In the thread replace IMEInumber with your actual IMEI Number). Press the Dial Icon, you should see a screen with the list of available CSC codes for your device. Select ATT and tap the Install option.
Be aware your firmware isn't AT&T, it's unbranded so even if you change the CSC, full call functionality may not be available. You can obtain AT&T's firmware at SamMobile.
https://www.sammobile.com/samsung/galaxy-s20-ultra/firmware/SM-G988U1/ATT/
varcor said:
Your device has Multiple CSC's which are included in OYM so you should be able to change your CSC to ATT, which is the CSC for AT&T.
Go to "Settings" then "About phone". Write down your IMEI Number. Open dialer and enter *#272*IMEInumber# (In the thread replace IMEInumber with your actual IMEI Number). Press the Dial Icon, you should see a screen with the list of available CSC codes for your device. Select ATT and tap the Install option.
Be aware your firmware isn't AT&T, it's unbranded so even if you change the CSC, full call functionality may not be available. You can obtain AT&T's firmware at SamMobile.
https://www.sammobile.com/samsung/galaxy-s20-ultra/firmware/SM-G988U1/ATT/
Click to expand...
Click to collapse
Varcor, thank you so much for all the directions.
As it stands right now, it is already on ATT. Once I flash over to the ATT firmware, would I be able to flash back to an unbranded one in the future, for whatever reason? Additionally, do I have to stay on the ATT firmware to retain those features? Or could just having my phone communicate with ATT at least once with my "branded" phone and then flash back retain those features?
garyHal said:
Varcor, thank you so much for all the directions.
As it stands right now, it is already on ATT. Once I flash over to the ATT firmware, would I be able to flash back to an unbranded one in the future, for whatever reason? Additionally, do I have to stay on the ATT firmware to retain those features? Or could just having my phone communicate with ATT at least once with my "branded" phone and then flash back retain those features?
Click to expand...
Click to collapse
You're most welcome. Yes, flashing back to unbranded won't be a problem. I don't think you will be able to retain the features if you go back to the unbranded firmware, it's not configured to allow full call feature functionality. Also, after flashing to the AT&T firmware you may need to contact their CSR for external programing. Good luck!
S20+ AT&T
Hi Varcor,
I'm new in this firmware things. I'm from Singapore and has been using S20 Exynos, but due to the extreme heat, bad battery life,etc. I've decided to import S20+ Snapdragon from AT&T, according to the Service provider SW ver information, it's showing as SAOMC_SM-G986U-OYN_ATT_QQ_0023 (I believe this means the set are unlocked).
With that said, I noticed that the software is outdated and the security patch level is on February 1,2020. when I referring to the AT&T website, It's showing as the latest software is QP1A.190711.020.G986USQU1ATE6 (June update) and mine still on QP1A.190711.020..G986USQU1ATAW (February). My CSC is G986UOYN1ATAW.
My question now is, whenever I tried to hit the software update, it's keep telling me that my software is up to date. Is there's a reason why it's wont detect the update? If it's because I'm in Singapore not US, then there's no choice that I need to flash using the firmware from Sammobile. The problem is which one that I need to download as AT&T carrier is not listed there. There's only T-mobile, Sprint, Unknown, USA. Please help.
https://www.sammobile.com/samsung/galaxy-s20-plus/firmware/#SM-G986U
Raigar said:
Hi Varcor,
I'm new in this firmware things. I'm from Singapore and has been using S20 Exynos, but due to the extreme heat, bad battery life,etc. I've decided to import S20+ Snapdragon from AT&T, according to the Service provider SW ver information, it's showing as SAOMC_SM-G986U-OYN_ATT_QQ_0023 (I believe this means the set are unlocked).
With that said, I noticed that the software is outdated and the security patch level is on February 1,2020. when I referring to the AT&T website, It's showing as the latest software is QP1A.190711.020SAOMC_SM-G986U-OYN_ATT_QQ_0023 (June update) and mine still on QP1A.190711.020..G986USQU1ATAW (February). My CSC is G986UOYN1ATAW.
My question now is, whenever I tried to hit the software update, it's keep telling me that my software is up to date. Is there's a reason why it's wont detect the update? If it's because I'm in Singapore not US, then there's no choice that I need to flash using the firmware from Sammobile. The problem is which one that I need to download as AT&T carrier is not listed there. There's only T-mobile, Sprint, Unknown, USA. Please help.
https://www.sammobile.com/samsung/galaxy-s20-plus/firmware/#SM-G986U
Click to expand...
Click to collapse
I would reach out to SamMobile and inquire why they're not listing the AT&T Firmware Update. You state your CSC is G986UOYN1ATAW. That CSC is also associated with T-Mobile. You're not using an AT&T SIM Card, correct? On a Multi-CSC Device when you insert a different SIM, the device should update to the correct Service Provider. If you're using a SIM from a Service Provider other than AT&T you probably won't receive AT&T Software Updates, which are distributed by Samsung, not AT&T via OTA.
varcor said:
I would reach out to SamMobile and inquire why they're not listing the AT&T Firmware Update. You state your CSC is G986UOYN1ATAW. That CSC is also associated with T-Mobile. You're not using an AT&T SIM Card, correct? On a Multi-CSC Device when you insert a different SIM, the device should update to the correct Service Provider. If you're using a SIM from a Service Provider other than AT&T you probably won't receive AT&T Software Updates, which are distributed by Samsung, not AT&T via OTA.
Click to expand...
Click to collapse
I did try to reach them, but for some reason they are giving me some irrelevant answer. Something like "You probably don't get OTA-updates (otherwise you got them already from AT&T)". We are having a conversation breakdown there, I think they are not an english speaker (or my english is just bad). Really? that CSC is associated with T-Mobile? now I'm getting more confused because the box is stated AT&T and it's sealed.
I'm using Singapore SIM card (Singtel), so you were saying this set I'm using right now is a Multi-CSC device? If i were to flash to the other carrier firmware, will it create any problem?
Raigar said:
I did try to reach them, but for some reason they are giving me some irrelevant answer. Something like "You probably don't get OTA-updates (otherwise you got them already from AT&T)". We are having a conversation breakdown there, I think they are not an english speaker (or my english is just bad). Really? that CSC is associated with T-Mobile? now I'm getting more confused because the box is stated AT&T and it's sealed.
I'm using Singapore SIM card (Singtel), so you were saying this set I'm using right now is a Multi-CSC device? If i were to flash to the other carrier firmware, will it create any problem?
Click to expand...
Click to collapse
Flashing Singtel Firmware won't work since it's configured for the Exynos SoC. Multi-SIM Devices have only regional Service Providers available, you don't have Singtel as an option in an AT&T device. Based on your situation I would consider one of two options. The first would be insert an AT&T SIM just for OTA updates. Not sure if you received an AT&T SIM when you purchased the device, if you didn't they're not hard to find. The second and likely best option is sell the device and purchase a Global Variant with a Snapdragon SoC, you'll receive updates regardless of your Service Provider. If it makes you feel any better there's lots of users in the same predicament. They want the Snapdragon device in regions selling mainly Exynos devices. Workarounds are in many situations are challenging,
varcor said:
Your device has Multiple CSC's which are included in OYM so you should be able to change your CSC to ATT, which is the CSC for AT&T.
Go to "Settings" then "About phone". Write down your IMEI Number. Open dialer and enter *#272*IMEInumber# (In the thread replace IMEInumber with your actual IMEI Number). Press the Dial Icon, you should see a screen with the list of available CSC codes for your device. Select ATT and tap the Install option.
Be aware your firmware isn't AT&T, it's unbranded so even if you change the CSC, full call functionality may not be available. You can obtain AT&T's firmware at SamMobile.
https://www.sammobile.com/samsung/galaxy-s20-ultra/firmware/SM-G988U1/ATT/
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Varcor
I have the exact same phone and using the same network as garyHal, unlocked 988U1/OYM/ATT.
I got my bootloader unlocked and decided to apply the ATT firmware (
G988U1UES1BTJ2). My CSC was already ATT so I didn't perform the csc install step.
After setting the phone up as new, it still seems like its running the unlocked mode. I don't see any kind of branding or extra ATT stuff that may have been downloaded. How do I verify that I have the right firmware and CSC set to ATT?
Thank you.
itchyUnder said:
Varcor
I have the exact same phone and using the same network as garyHal, unlocked 988U1/OYM/ATT.
I got my bootloader unlocked and decided to apply the ATT firmware (
G988U1UES1BTJ2). My CSC was already ATT so I didn't perform the csc install step.
After setting the phone up as new, it still seems like its running the unlocked mode. I don't see any kind of branding or extra ATT stuff that may have been downloaded. How do I verify that I have the right firmware and CSC set to ATT?
Thank you.
Click to expand...
Click to collapse
How did you manage to unlock your bootloader since US Snapdragon variants are locked down pretty tight? I don't think the firmware is dedicated to ATT, it's Multi CSC, designed to function with a number of US Carriers. You should be delighted you're not suffering with ATT bloatware! To check the Active CSC go to About Phone, Settings, Software Information, Service Provider SW ver. On the bottom string the first three letters are the Active CSC on your device. You can review this article for additional information on Firmware and CSC's.
CSC and Home_CSC | All You Need to Know About ODIN Samsung Flash
Here is all you need to know about the CSC and Home_CSC.What exactly is a Firmware?A firmware is nothing but a permanent software which is programme
www.getdroidtips.com
varcor said:
How did you manage to unlock your bootloader since US Snapdragon variants are locked down pretty tight? I don't think the firmware is dedicated to ATT, it's Multi CSC, designed to function with a number of US Carriers. You should be delighted you're not suffering with ATT bloatware! To check the Active CSC go to About Phone, Settings, Software Information, Service Provider SW ver. On the bottom string the first three letters are the Active CSC on your device. You can review this article for additional information on Firmware and CSC's.
CSC and Home_CSC | All You Need to Know About ODIN Samsung Flash
Here is all you need to know about the CSC and Home_CSC.What exactly is a Firmware?A firmware is nothing but a permanent software which is programme
www.getdroidtips.com
Click to expand...
Click to collapse
If I am reading it correctly, this is what I am seeing:
ATT/ATT/XAA
I am happy that I don't have the ATT bloatware but I also feel that ATT is locking me out of some of their features because I don't have a "branded" phone, such as wifi call or visual voicemail. Am I misunderstanding your post from above, #6, that flashing ATT firmware would give me the carrier features?
Additionally, does the firmware determine what frequency bands I am using and if I am taking full advantage of ATT's offerings?
itchyUnder said:
If I am reading it correctly, this is what I am seeing:
ATT/ATT/XAA
I am happy that I don't have the ATT bloatware but I also feel that ATT is locking me out of some of their features because I don't have a "branded" phone, such as wifi call or visual voicemail. Am I misunderstanding your post from above, #6, that flashing ATT firmware would give me the carrier features?
Additionally, does the firmware determine what frequency bands I am using and if I am taking full advantage of ATT's offerings?
Click to expand...
Click to collapse
Flashing ATT Dedicated Firmware would give you the best chance for additional call features ASSUMING your Ulocked Device is capable of incorporating those features. It should do the trick since the hardware is identical to an ATT device. I would head to an ATT Store to get a definitive answer. Samsung has made it more and more challenging to mix and match branded and unlocked devices with CSC or Firmware modifications. In many cases you won't know until you try. Users want their smartphones to be smart, to work perfectly in every situation but the major carriers use proprietary tools to hold clients hostage.
varcor said:
Open your dialer, enter *#1234#, press the Dial Icon. You'll see CSC: G98??, the next 3 letters will be your device's CSC Code. Your Service Provider's CSC is "ATT" which is different than the CSC in your device. Whether or not you can change the CSC depends on your device's CSC. Device firmware is always configured for the specific, original CSC or Multi CSC's.
This post may be the best workaround.
https://forum.xda-developers.com/showpost.php?p=82444733&postcount=8
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Click to collapse
Please bro i need a help
My note 20 ultra is ATT unlocked
Because I'm not in united state
But in section about phone
My model is N986U note U1
am searching sammobil to udate my phone to android 13
I found nothing at&t with my model number N986U
Only N986U1
What should I do to update to android 13
This should do the trick.
Download Samsung Galaxy Note 20 Ultra 5G SM-N986U USC USA (US Cellular) firmware
All Samsung firmwares for Galaxy Note 20 Ultra 5G in USA (US Cellular) with model code SM-N986U. We offer free and fast download options. Check them out now.
www.sammobile.com
romano_ezzat said:
Please bro i need a help
My note 20 ultra is ATT unlocked
Because I'm not in united state
But in section about phone
My model is N986U note U1
am searching sammobil to udate my phone to android 13
I found nothing at&t with my model number N986U
Only N986U1
What should I do to update to android 13
Click to expand...
Click to collapse
Download Samsung Galaxy Note 20 Ultra 5G SM-N986U USC USA (US Cellular) firmware
All Samsung firmwares for Galaxy Note 20 Ultra 5G in USA (US Cellular) with model code SM-N986U. We offer free and fast download options. Check them out now.
www.sammobile.com
varcor said:
This should do the trick.
Download Samsung Galaxy Note 20 Ultra 5G SM-N986U USC USA (US Cellular) firmware
All Samsung firmwares for Galaxy Note 20 Ultra 5G in USA (US Cellular) with model code SM-N986U. We offer free and fast download options. Check them out now.
www.sammobile.com
Click to expand...
Click to collapse
I misunderstanding
What a trick bro
It's a link for firmware updates
I need to know which one compatible with my note
And after flash will still unlocked?

S20 Snapdragon from Tradingshenzen

Hello Guys,
I bought a Samsung galaxy s20 from the Site Tradingshenzen and its for my a great Phone but its the Hong Kong Version the Csc is Open China. So my question is now its possible to change that csc to a other one without Rooting the Device? Would be great if someone can help me thanks forwards
jucin said:
Hello Guys,
I bought a Samsung galaxy s20 from the Site Tradingshenzen and its for my a great Phone but its the Hong Kong Version the Csc is Open China. So my question is now its possible to change that csc to a other one without Rooting the Device? Would be great if someone can help me thanks forwards
Click to expand...
Click to collapse
If its hong kong variant then it should have TGY csc
Moreover, you can change csc with samkey(no root required). Buy from ebay
JimzFreebies said:
If its hong kong variant then it should have TGY csc
Moreover, you can change csc with samkey(no root required). Buy from ebay
Click to expand...
Click to collapse
Is there no free way?
jucin said:
Is there no free way?
Click to expand...
Click to collapse
May be after rooting, it can be done but it may corrupt imei as only few users reported this.
Samkey method is very easy. Before buying, contact them and provide all details of your phone to check whether it support your phone or not.
JimzFreebies said:
May be after rooting, it can be done but it may corrupt imei as only few users reported this.
Samkey method is very easy. Before buying, contact them and provide all details of your phone to check whether it support your phone or not.
Click to expand...
Click to collapse
I asked them they say the sm-g9810 is not supported do you know any other way?
jucin said:
I asked them they say the sm-g9810 is not supported do you know any other way?
Click to expand...
Click to collapse
Bro you need to search question and answers forum.. I have read in a post where a user having g9880 changed its csc even samkey care was saying that its not supported.
JimzFreebies said:
Bro you need to search question and answers forum.. I have read in a post where a user having g9880 changed its csc even samkey care was saying that its not supported.
Click to expand...
Click to collapse
Do you know which forum? Because there are many but if you want search the model sm-g9810 in the SamKey forum it say not supported how he get that works :laugh:
jucin said:
Do you know which forum? Because there are many but if you want search the model sm-g9810 in the SamKey forum it say not supported how he get that works [emoji23]
Click to expand...
Click to collapse
Yes it worked. Its in same forum s20/20+/20 ultra questions & answers
JimzFreebies said:
Yes it worked. Its in same forum s20/20+/20 ultra questions & answers
Click to expand...
Click to collapse
I know bro but which thread do you know that? Thanks for the helping here btw :good:
jucin said:
I know bro but which thread do you know that? Thanks for the helping here btw :good:
Click to expand...
Click to collapse
Check all threads with name G9880 or TGY or BRI. It will not take much time to find it
JimzFreebies said:
Check all threads with name G9880 or TGY or BRI. It will not take much time to find it
Click to expand...
Click to collapse
I saw it now but looks like you can not change tgy or bri or chc to other only bri to tgy or tgy to bri
jucin said:
I saw it now but looks like you can not change tgy or bri or chc to other only bri to tgy or tgy to bri
Click to expand...
Click to collapse
No you are wrong. TGY or BRI are basically same.. Only network connectivity change like 5g, volte, wifi calling support. Don't know about chc but you can change it to tgy or bri.
I read your posts in another csc thread. You should be on default theme. Then install apk. It will show in themes. Then u can change csc
JimzFreebies said:
No you are wrong. TGY or BRI are basically same.. Only network connectivity change like 5g, volte, wifi calling support. Don't know about chc but you can change it to tgy or bri.
I read your posts in another csc thread. You should be on default theme. Then install apk. It will show in themes. Then u can change csc
Click to expand...
Click to collapse
I did that it dont show for me i asked someone if i can change from china to other csc like german he say that dont work because its other model then mine

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