Develop Bugs

Need basic info on CSC codes (please help me understand them correctly)

Ok so I really y need your help guys!
I've asked this question a few times in the past about other phones I ended up not keeping, but I'm now intent on making this work.
I'll keep it simple: can I flash a Canadian CSC on a Global phone? Will this brick the phone?
I don't quite fully understand how the CSC relates to everything else, but the times I tried I couldn't get the CSC to change. Plus I'm concerned because I have a dual sim model (which doesn't exist in Canada) that is Exynos, where the Canadian model is a SD.
Through my reading I think it could work but I don't want to have a $1000 paperweight in the end, but I'm have piss-poor reception, Samsung Pay doesn't work, VoLTE doesn't work, I can't block phrases in SMS and the list goes on. I want to try this to see if it helps anything... Failing this I may cut my losses, sell the phone half-price and just get a non-Samsung device; I'm getting so aggravated at this it's not even funny.
Thanks!
PS: if you are wondering why I didn't buy a Canadian phone to start with, let's say it's a complicated answer but can be summed up by the dual SIM cards.

A CSC defines that carrier settings of the phone. As long as you use official Samsung firmware and do it properly it will not brick your phone. Look at sammobile first to see if Canada has a stock firmware. However, doing this will mean all data is lost, are you flashing carrier based firmware or your country's global software?
I just did a search and on the S8 there was no difference between the single sim and dual sim softwares and on GSM arena it classes them as the same. Do you the have snapdragon or exynos version?

JacobTB said:
A CSC defines that carrier settings of the phone. As long as you use official Samsung firmware and do it properly it will not brick your phone. Look at sammobile first to see if Canada has a stock firmware. However, doing this will mean all data is lost, are you flashing carrier based firmware or your country's global software?
Click to expand...
Click to collapse
I don't mind data loss, I have back ups and really not much on the phone anyway. Canada has stock firmwares for each carrier, so to answer your question, carrier based. But my huge deal here is the different configuration between what is available here and what I have: I surely can't flash the entire firmware based on a canadian phone... I would lose my dual SIM and surely the difference processors would brick the device. But I'm not really sure if I can mix and match, i.e. pick a CSC for my carrier and everything else (PDA), and if I can, what do I chose?!
See where I'm at... because I can't flash the entire firmware I think I'm s.o.l.

I'm afraid the situation isn't that good for you.... I am assuming you have the Exynos varient since I cant see a dual sim version of the snapdragon variation which means no Canadian firmware is available for your device at all. Since I'm in the United Kingdom we usually swap our CSCs with ease but it appears if you didn't buy the snapdragon version your out of luck at least for now. I'm sorry I couldn't be of more help you could sell and get the Canadian version but you won't be able to dual sim or get another phone I left from the S6 to oneplus and had a really good exprenice but that was on the 3T so I'm not sure what they are like now
Again sorry I couldn't have been more help:crying:

JacobTB said:
I'm afraid the situation isn't that good for you.... I am assuming you have the Exynos varient since I cant see a dual sim version of the snapdragon variation which means no Canadian firmware is available for your device at all. Since I'm in the United Kingdom we usually swap our CSCs with ease but it appears if you didn't buy the snapdragon version your out of luck at least for now. I'm sorry I couldn't be of more help you could sell and get the Canadian version but you won't be able to dual sim or get another phone I left from the S6 to oneplus and had a really good exprenice but that was on the 3T so I'm not sure what they are like now
Again sorry I couldn't have been more help:crying:
Click to expand...
Click to collapse
Figured as much... I'll move on I guess...

Anyone running U1 firmware on N975W in Canada?

I live in Canada and have a N975W and want to flash the star wars U1 firmware, but before I do I wanna know what happens when you put a Canadian Carrier sim in?!? Will the U1 CSC have Canadian Carrier info preset? Will I have to manually modify to get things like MMS to work? Or does the U1 firmware have Canadian stuff preloaded that gets triggered with the Sim card?
Thanks

Nobody?

Exynos
rmanaudio16 said:
I live in Canada and have a N975W and want to flash the star wars U1 firmware, but before I do I wanna know what happens when you put a Canadian Carrier sim in?!? Will the U1 CSC have Canadian Carrier info preset? Will I have to manually modify to get things like MMS to work? Or does the U1 firmware have Canadian stuff preloaded that gets triggered with the Sim card?
Thanks
Click to expand...
Click to collapse
If u have exynos model of note 10 plus like me then u can flash the firmware that I have flashed starwars edition.

zaibjan said:
If u have exynos model of note 10 plus like me then u can flash the firmware that I have flashed starwars edition.
Click to expand...
Click to collapse
I've got a Snapdragon, same hardware as USA

rmanaudio16 said:
I've got a Snapdragon, same hardware as USA
Click to expand...
Click to collapse
I think then u can flash as I have totally different csc
Now from the first just remember to do that whith already inserted sim into your phone so it can instantly fetch the settings of your sim carrier .

rmanaudio16 said:
I live in Canada and have a N975W and want to flash the star wars U1 firmware, but before I do I wanna know what happens when you put a Canadian Carrier sim in?!? Will the U1 CSC have Canadian Carrier info preset? Will I have to manually modify to get things like MMS to work? Or does the U1 firmware have Canadian stuff preloaded that gets triggered with the Sim card?
Thanks
Click to expand...
Click to collapse
The American CSC does not contain information for Canadian carriers. After you flash the American U1 firmware, flash the Canadian CSC. There is only one CSC for Canada, and it contains information for all the Canadian carriers (Bell, Rogers, Telus, etc.). After flashing the Canadian CSC, when you insert a SIM from a Canadian carrier it applies the settings for your carrier's VoLTE, wi-fi calling, APN, etc.

If you flash Canadian CSC after flashing full U1 firmware will it not effect the U1 firmware? The CSC file is so large I'm wondering how it will effect the U1 firmware. Anyone do this yet? Do I need to use modified Odin?

Have you done this? Does flashing a different CSC effect the firmware?
---------- Post added at 11:58 AM ---------- Previous post was at 11:57 AM ----------
I would appreciate any input from someone who has tried this please. I really want to flash the star wars Android 10 for U1 on my 975W but am afraid that CSC will be different and not sure If flashing CSC from a different firmware will work as the file is so big.

if it doesnt work, you just flash back to stock firmware and csc.
just make sure its for the same processor.

OK, so, I flashed first Star Wars Android 9 version of U1 firmware to test and it works perfectly. Booted up with Canadian carrier sim and it loaded all APN settings. Everything works perfectly.
Flashed Android 10 version of Star Wars U1 firmware and its all good.
So you can load U1 firmware on N975W unlocked version. Same hardware and works in both countries. Do not even need Canadian CSC.
Do not load the HOME CSC file. It will wipe everything but its worth it. Firmware is solid and beautiful.

By flashing unlocked firmware, did you get rid of any carrier bloatware?

Can I ask you guys an info? I own N975u1, on first boot It haven't Greek language and I choose it later at setting. Does N975w on first boot has Greek language? So I install N975w firmware to solve my problem?(some settings remains in English).

975W is Canadian model and i have it on my note 10+ with carrier esk or eastlink if you wish to know what carrier esk stands for. If you are trying to get your phone to show Greek language I do not believe the 975w firmware would be a good choice. It lets you select which country you are from when you start up a freshly formatted phone but I have never selected any language other than Canada which is English. Just thought I would let you know that my model is also a Snapdragon chipset and I don't know if you can Flash another firmware unless you unlock Bootloader and I do not know if that is possible currently on a Snapdragon chipset Note 10.

TWiiTCH said:
975W is Canadian model and i have it on my note 10+ with carrier esk or eastlink if you wish to know what carrier esk stands for. If you are trying to get your phone to show Greek language I do not believe the 975w firmware would be a good choice. It lets you select which country you are from when you start up a freshly formatted phone but I have never selected any language other than Canada which is English. Just thought I would let you know that my model is also a Snapdragon chipset and I don't know if you can Flash another firmware unless you unlock Bootloader and I do not know if that is possible currently on a Snapdragon chipset Note 10.
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Click to collapse
I have n975w snapdragon with Virgin mobile. I can't access my oem unlock. Is there a firmware I can flash that will give me access while maintaining my plan with virgin?

Sudosuperman said:
I have n975w snapdragon with Virgin mobile. I can't access my oem unlock. Is there a firmware I can flash that will give me access while maintaining my plan with virgin?
Click to expand...
Click to collapse
The only phones with an unlockable bootloader are the N9750 (chineese variant) and Exynos models.
Can you please be more specific with what you are looking for within regards to firmware. Other then the information/answers posted in the first page of this thread I saw this thread, but depending on what your looking for specifically the post may not be of any help.
Also be aware that if you want to retain full compatibility with Virgin then you shouldn't go messing around with the firmware. Flashing other firmware (especially for US models) can result in things not working the way they would normally.

scottusa2008 said:
The only phones with an unlockable bootloader are the N9750 (chineese variant) and Exynos models.
Can you please be more specific with what you are looking for within regards to firmware. Other then the information/answers posted in the first page of this thread I saw this thread, but depending on what your looking for specifically the post may not be of any help.
Also be aware that if you want to retain full compatibility with Virgin then you shouldn't go messing around with the firmware. Flashing other firmware (especially for US models) can result in things not working the way they would normally.
Click to expand...
Click to collapse
OK, so only the exynos version of my phone is oem unlockable? I am just trying to be able to root my phone, i figured if I could flash an oem unlocked firmware while keeping my carrier then I would be able to do so.

Sudosuperman said:
OK, so only the exynos version of my phone is oem unlockable? I am just trying to be able to root my phone, i figured if I could flash an oem unlocked firmware while keeping my carrier then I would be able to do so.
Click to expand...
Click to collapse
Correct.
Only the models with the exynos chipset and the N9750 variant can be rooted.

Sudosuperman said:
I have n975w snapdragon with Virgin mobile. I can't access my oem unlock. Is there a firmware I can flash that will give me access while maintaining my plan with virgin?
Click to expand...
Click to collapse
Only firmware for OEM UNLOCK switch in developer menu is exynos models. I found other sites on the net stating SM-N975W Snapdragon can be bootloader unlocked but i tried them all and none worked. DO NOT flash exynos firmware on Snapdragon model as you may ruin your phone or void warranty. Luckily mine still shows official and knox counter didn't get tripped. Sorry, wish I had better news 4 ya.

TWiiTCH said:
Only firmware for OEM UNLOCK switch in developer menu is exynos models. I found other sites on the net stating SM-N975W Snapdragon can be bootloader unlocked but i tried them all and none worked. DO NOT flash exynos firmware on Snapdragon model as you may ruin your phone or void warranty. Luckily mine still shows official and knox counter didn't get tripped. Sorry, wish I had better news 4 ya.
Click to expand...
Click to collapse
Respect. I've accepted that my phone can't be rooted. Gunna buy a nexus 7 with kali nethunter pre installed to save the hassle XD THANKS FOR THE HELP!!!

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.

S20+ CSC Change

Hello Everyone,
I have the SM-G985F/DS in Canada. The current CSC is XSP/XSP,XSP/XSP.
This phone is the international variant. Can someone please guide me on how I can change the CSC? I am a total noob. I would like Samsung Pay/ VoLTE to work. Preferably Fido CSC or Unlocked Canada, some bands aren't working properly.
If this isn't possible will I get updates for my phone?
This has been a big headache.
The phone is Exynos and I'm in a Snapdragon country.
Thanks

ShawnShanked said:
Hello Everyone,
I have the SM-G985F/DS in Canada. The current CSC is XSP/XSP,XSP/XSP.
This phone is the international variant. Can someone please guide me on how I can change the CSC? I am a total noob. I would like Samsung Pay/ VoLTE to work. Preferably Fido CSC or Unlocked Canada, some bands aren't working properly.
If this isn't possible will I get updates for my phone?
This has been a big headache.
The phone is Exynos and I'm in a Snapdragon country.
Thanks
Click to expand...
Click to collapse
Since you're using an Exynos phone in a country where they officially sell the Snapdragon variant, you won't be able to flash the Canadian CSCs since they're only available for the Canadian variant.
VoLTE should work after you insert your SIM and reboot the phone, I've seen multiple reports of VoLTE no longer requiring the correct CSC to function.
Messing with band support is almost impossible on Exynos variants and I believe Samsung Pay requires the correct CSC to work so you're out of luck there.
All this aside, you will still get OTA updates based on when they're released for the XSP CSC.

Is it possible to switch region / variant by flashing different firmware?

Hello,
Newbie question here coming from someone with Exynos model SM-G988B/DS (purchased while visiting Singapore):
Can I make this phone fully compatible with North American carriers? I'd like to use Wi-Fi Calling and VoLTE - but my Canadian carrier says that this phone is not eligible for these services because it's not a North American variant. A USSD code provided by my carrier was not successful (it said "invalid MMI code").
Even though I'm not entirely comfortable flashing different firmware onto Samsung phones - in this case I am desperate to do it (if it can be done to achieve my purpose at all...)
Now I'm kicking myself... wishing I knew that these calling features might not work back in Canada.
Thank you for your advice.

this is odd.. my phone is purchased in Malaysia, the country north of Singapore, and we have different CSC codes.
Wi-fi calling and VoLTE is working fine when i am in Singapore using a Singaporean SIM Card and when i back home in Malaysia using my Malaysian SIM Card. (But this is on the Samsung Note 8, have not gone to Singapore since i got my S20+ shortly before Malaysia shut down the borders due to the Covid-19 outbreak)

ctp9 said:
Hello,
Newbie question here coming from someone with Exynos model SM-G988B/DS (purchased while visiting Singapore):
Can I make this phone fully compatible with North American carriers? I'd like to use Wi-Fi Calling and VoLTE - but my Canadian carrier says that this phone is not eligible for these services because it's not a North American variant. A USSD code provided by my carrier was not successful (it said "invalid MMI code").
Even though I'm not entirely comfortable flashing different firmware onto Samsung phones - in this case I am desperate to do it (if it can be done to achieve my purpose at all...)
Now I'm kicking myself... wishing I knew that these calling features might not work back in Canada.
Thank you for your advice.
Click to expand...
Click to collapse
Short answer = you can't. You will need to change the "region key" (csc) by using samkey. If you flash the firmware belonging to different region with different csc code, you will not get any ota update at all. Therefore you must flash the firmware of, say, Canadian region, as well as changing the CSC to same set that Canada uses.
However: do *take note*, do *not* flash snapdragon firmware to exynos set vice versa.

vash_h said:
this is odd.. my phone is purchased in Malaysia, the country north of Singapore, and we have different CSC codes.
Wi-fi calling and VoLTE is working fine when i am in Singapore using a Singaporean SIM Card and when i back home in Malaysia using my Malaysian SIM Card. (But this is on the Samsung Note 8, have not gone to Singapore since i got my S20+ shortly before Malaysia shut down the borders due to the Covid-19 outbreak)
Click to expand...
Click to collapse
Yours works because those countries are still within the same region.
bluelavender said:
Short answer = you can't. You will need to change the "region key" (csc) by using samkey. If you flash the firmware belonging to different region with different csc code, you will not get any ota update at all. Therefore you must flash the firmware of, say, Canadian region, as well as changing the CSC to same set that Canada uses.
Click to expand...
Click to collapse
You're saying it cannot be done but then are telling me that it can be done using samkey. So which is it? Can I not flash North American firmware with the appropriate CSC?
However: do *take note*, do *not* flash snapdragon firmware to exynos set vice versa.
Click to expand...
Click to collapse
This is obvious - I would never do such a thing.

As its an exynos device it won't play well with usa networks and you cannot flash snapdragon firmware obviously. If you were in Europe this would have been easily done by changing the csc to say UK BTU via samkey and flashing the BTU firmware etc. Usa is a more complicated given the bands are different over there. Also you probably won't get carrier aggregation and volte / WiFi calling is a lottery! Plus usa networks aren't as chilled out as the rest of the world and have hissy fits if you don't use their branded devices. Charge way more than most other countries too! ?

ctp9 said:
Yours works because those countries are still within the same region.
You're saying it cannot be done but then are telling me that it can be done using samkey. So which is it? Can I not flash North American firmware with the appropriate CSC?
Click to expand...
Click to collapse
Not exactly. I'm in Singapore, using Taiwan set, with HK firmware & csc. It's 3 different regions
i'm saying it cannot be done by just flashing firmware like your original question
You *must* do both: update firmware *and* change csc. Now Samsung has locked the csc changing. You can no longer change csc by just flashing firmware of different region. It won't work. Change csc, then flash the firmware.

ctp9 said:
Yours works because those countries are still within the same region.
You're saying it cannot be done but then are telling me that it can be done using samkey. So which is it? Can I not flash North American firmware with the appropriate CSC?
This is obvious - I would never do such a thing.
Click to expand...
Click to collapse
It is different region as the csc is different.
In your case it is complicated. You can try to flash in your local csc file via odin. Just the csc file nothing else. See if it will work.
The firmware for exynos and snapdragon variants is very different.
---------- Post added at 04:45 AM ---------- Previous post was at 04:44 AM ----------
bluelavender said:
Not exactly. I'm in Singapore, using Taiwan set, with HK firmware & csc. It's 3 different regions
i'm saying it cannot be done by just flashing firmware like your original question
You *must* do both: update firmware *and* change csc. Now Samsung has locked the csc changing. You can no longer change csc by just flashing firmware of different region. It won't work. Change csc, then flash the firmware.
Click to expand...
Click to collapse
He cannot and must not flash sd firmware into exynos phone. It'll brick the phone. Taiwan and hk is sd variant.

Ok - thank you for your responses so far.
So what is the absolute best thing that could be done in order to be *the most* compatible with North American carriers? What CSC should I be aiming for and which firmware to be exact? Could someone please link me to the appropriate files? I'll do my research once I have an idea of what to start with. (If it won't work - I obviously won't bother with it... but I think I should do some more research before I completely give up...)

vash_h said:
He cannot and must not flash sd firmware into exynos phone. It'll brick the phone. Taiwan and hk is sd variant.
Click to expand...
Click to collapse
Yes, I advised him same thing in my earlier post above. sd & exynos rom is not interchangeable.
---------- Post added at 05:52 AM ---------- Previous post was at 05:48 AM ----------
ctp9 said:
Ok - thank you for your responses so far.
So what is the absolute best thing that could be done in order to be *the most* compatible with North American carriers? What CSC should I be aiming for and which firmware to be exact? Could someone please link me to the appropriate files? I'll do my research once I have an idea of what to start with. (If it won't work - I obviously won't bother with it... but I think I should do some more research before I completely give up...)
Click to expand...
Click to collapse
you're in tough luck. USA bands are different from most of the world (https://sea.pcmag.com/smartphones/3...-americas-first-unlocked-all-carrier-5g-phone). To top it off, your set is exynos, and even if you can get firmware that works for USA set, it is most likely will be in snapdragon.
Btw, exynos version will never support mmwave in USA carriers, simply because exynos version does not have mmwave antenna.
I would suggest you sell that exynos set / exchange it to snapdragon set. With snapdragon, you have more luck finding compatible firmware.

Well... I cannot particularly exchange this device now that I'm in Canada and I've had it for over a month. And no one here would want to buy it since it's not local to the continent. I'm stuck with it here now.
I'll just use it for a year and then get some other new phone next year that's local to my region. There's a few other things I do not like about this latest Galaxy anyway... and I cannot see myself using it for longer than a year. What a pity though - I used to be such a die hard Samsung fan until this latest flagship. They screwed up so many things, namely - the battery life and camera quality.

ctp9 said:
What a pity though - I used to be such a die hard Samsung fan until this latest flagship. They screwed up so many things, namely - the battery life and camera quality.
Click to expand...
Click to collapse
That's precisely why I do not want to use local version here, which is exynos, the one you brought there.. snapdragon version is *miles ahead* and really is the flagship quality. I don't have issue with camera, the battery is insanely efficient (I have 2 WhatsApp, 2 telegram, email real-time-push, wechat, line, fb, etc) and I only drain 4% per 8 hours at night with all notifications still coming in
Yes, that's the snapdragon version, the real s20 flagship.

Try switching off 120hz. I'm happy with my 60Hz. Battery is pretty good, i usually unplig my charger at 630am.. It'll last me to 10pm with about 30% charge left.
This includes occasional messaging on telegram and whatsapp, some email checking and Facebook browsing. Working hours I'll be on office wifi. Lunch hour and after work 530pm to 630pm is my pokemon go hour which is the only time my wife let's me play games.
My phone is s20+ 4G variant, usually on 4G+, dual sim and 1 micro sd card (one of the sim is the esim). My display is at wqhd+ at 60Hz.
So far im happy with the battery life.
Just this morning, taking advantage of my wifes absence, did some gaming, namely war machines, the tank fps game and pokemon go.. From 630am to 1130am, Facebook and tiktok when I'm preparing and eating my breakfast. my phone is left with 60% charge.

Hello,
I would buy Snapdragon / Hong Kong version because I hate Exynos problems, but I'm a bit confused about CSC.
I've read the topic, and I understood that I can't flash Exynos (European) firmware on the Snapdragon / Hong Kong version.
Some people bought Hong Kong version and works very well in my country frequencies, but I would use Samsung Pay.
What will happen if I change CSC/flash to any european CSC? It would work or not?
Thank you a lot.

psychok9 said:
Hello,
I would buy Snapdragon / Hong Kong version because I hate Exynos problems, but I'm a bit confused about CSC.
I've read the topic, and I understood that I can't flash Exynos (European) firmware on the Snapdragon / Hong Kong version.
Some people bought Hong Kong version and works very well in my country frequencies, but I would use Samsung Pay.
What will happen if I change CSC/flash to any european CSC? It would work or not?
Thank you a lot.
Click to expand...
Click to collapse
Samsung pay might work if the card supports samsung pay. But no way to know for sure until someone test it themselves.
Sent from my SM-G985F using Tapatalk

bluelavender said:
Not exactly. I'm in Singapore, using Taiwan set, with HK firmware & csc. It's 3 different regions
i'm saying it cannot be done by just flashing firmware like your original question
You *must* do both: update firmware *and* change csc. Now Samsung has locked the csc changing. You can no longer change csc by just flashing firmware of different region. It won't work. Change csc, then flash the firmware.
Click to expand...
Click to collapse
Hey man, can you make a link a guide on how to change the CSC and Flash the firmware?
I have an s20 Ultra Exynos from Indonesia, and want to change the to Korean CSC and flash the firmware.
---------- Post added at 09:20 PM ---------- Previous post was at 09:18 PM ----------
bluelavender said:
Yes, I advised him same thing in my earlier post above. sd & exynos rom is not interchangeable.
---------- Post added at 05:52 AM ---------- Previous post was at 05:48 AM ----------
you're in tough luck. USA bands are different from most of the world (https://sea.pcmag.com/smartphones/3...-americas-first-unlocked-all-carrier-5g-phone). To top it off, your set is exynos, and even if you can get firmware that works for USA set, it is most likely will be in snapdragon.
Btw, exynos version will never support mmwave in USA carriers, simply because exynos version does not have mmwave antenna.
I would suggest you sell that exynos set / exchange it to snapdragon set. With snapdragon, you have more luck finding compatible firmware.
Click to expand...
Click to collapse
Wait what? Exynos definitely has MMwave antennae! If it doesn't that's news to me. Where did you see information that states that?

eyeatoma said:
Hey man, can you make a link a guide on how to change the CSC and Flash the firmware?
I have an s20 Ultra Exynos from Indonesia, and want to change the to Korean CSC and flash the firmware.
---------- Post added at 09:20 PM ---------- Previous post was at 09:18 PM ----------
Wait what? Exynos definitely has MMwave antennae! If it doesn't that's news to me. Where did you see information that states that?
Click to expand...
Click to collapse
On Exynos & mmwave: https://www.bitfeed.co/2020/03/15/s...s-completely-disassembled-no-antennas-mmwave/ and https://eu.community.samsung.com/t5...-5G-supported-5G-networks/td-p/1577262/page/2
btw, you cannot flash Korean firmware to exynos. Korean S20 are all now using snapdragon

How do i unlock my Sim Network on Galaxy A71 5G T-Mobile carrier?
Please guys, how do i unlock my local sim network here in Nigeria?
I bought a second hand used Samsung Galaxy A71 5g from a vendor here. My local network won't work on the phone, telling me it's locked. The phone runs on a Snapdragon chip.
I'm really desperate about unlocking the network, how to i go about this?

bluelavender said:
Short answer = you can't. You will need to change the "region key" (csc) by using samkey. If you flash the firmware belonging to different region with different csc code, you will not get any ota update at all. Therefore you must flash the firmware of, say, Canadian region, as well as changing the CSC to same set that Canada uses.
However: do *take note*, do *not* flash snapdragon firmware to exynos set vice versa.
Click to expand...
Click to collapse
What are you on about ? Short answer = Yes you can! I've been on Germany CSC (Im UK based) I've been on Abu Dhabi region and i was getting my OTA updates with no issues i think you were confused with a root as that breaks your phone.

ctp9 said:
Well... I cannot particularly exchange this device now that I'm in Canada and I've had it for over a month. And no one here would want to buy it since it's not local to the continent. I'm stuck with it here now.
I'll just use it for a year and then get some other new phone next year that's local to my region. There's a few other things I do not like about this latest Galaxy anyway... and I cannot see myself using it for longer than a year. What a pity though - I used to be such a die hard Samsung fan until this latest flagship. They screwed up so many things, namely - the battery life and camera quality.
Click to expand...
Click to collapse
Did you able to change to csc or firmware of taiwan version