Develop Bugs

S9 Bootloader, CSC, VoLTE

hi
i used to have VoLTE on my unlocked samsung galaxy S9 (SM-G960FD)
i was on stock rom (G960FXXU1ARB3) when i had both VoLTE & VoWiFi , i had to reset my phone for some reason..... i said why not update and restart ? so i updated to G960FXXU2BRGA and i lost both VoLTE & VoWiFi
i tried downgrading to ARB3 but had no luck since the bootloader was updated.... so its not an option.
can anyone help me to get VoLTE back ? i really need it :crying: and i dont want to lose the warranty

hoomantanha said:
hi
i used to have VoLTE on my unlocked samsung galaxy S9 (SM-G960FD)
i was on stock rom (G960FXXU1ARB3) when i had both VoLTE & VoWiFi , i had to reset my phone for some reason..... i said why not update and restart ? so i updated to G960FXXU2BRGA and i lost both VoLTE & VoWiFi
i tried downgrading to ARB3 but had no luck since the bootloader was updated.... so its not an option.
can anyone help me to get VoLTE back ? i really need it :crying: and i dont want to lose the warranty
Click to expand...
Click to collapse
Hi, you may download an app ''QuickShortcutMaker" on Playstore. After that open the app and search for "lte call". You may find Enhanced LTE Services under Mobile Networks. Select it and select try, now you may turn VOLTE on. Sorry for my broken english.

zeanong said:
Hi, you may download an app ''QuickShortcutMaker" on Playstore. After that open the app and search for "lte call". You may find Enhanced LTE Services under Mobile Networks. Select it and select try, now you may turn VOLTE on. Sorry for my broken english.
Click to expand...
Click to collapse
Thanks for the reply
Found lte advanced services
But its empty ?

hoomantanha said:
Thanks for the reply
Found lte advanced services
But its empty ?
Click to expand...
Click to collapse
So weird, maybe due to different country firmware. I got this.

hoomantanha said:
hi
i used to have VoLTE on my unlocked samsung galaxy S9 (SM-G960FD)
i was on stock rom (G960FXXU1ARB3) when i had both VoLTE & VoWiFi , i had to reset my phone for some reason..... i said why not update and restart ? so i updated to G960FXXU2BRGA and i lost both VoLTE & VoWiFi
i tried downgrading to ARB3 but had no luck since the bootloader was updated.... so its not an option.
can anyone help me to get VoLTE back ? i really need it :crying: and i dont want to lose the warranty
Click to expand...
Click to collapse
May I know your Original Country code(CSC). And, what is your currently active OMC(CSC)? You might use Phoneinfo app for checking the currently active CSC.

Amijaz said:
May I know your Original Country code(CSC). And, what is your currently active OMC(CSC)? You might use Phoneinfo app for checking the currently active CSC.
Click to expand...
Click to collapse
G960FXXU1ARB3
This was originally on the phone when i unboxed it....
But after that, whatever firmware i had installed.... didnt have VoLTE
Now that the bootloader is uodated... i cant even downgrade to that....
I live in Iran... i have tried every firmware on sammobile.com for iran
No luck

zeanong said:
So weird, maybe due to different country firmware. I got this.
Click to expand...
Click to collapse
No, its the same country ( Iran )

hoomantanha said:
G960FXXU1ARB3
This was originally on the phone when i unboxed it....
But after that, whatever firmware i had installed.... didnt have VoLTE
Now that the bootloader is uodated... i cant even downgrade to that....
I live in Iran... i have tried every firmware on sammobile.com for iran
No luck
Click to expand...
Click to collapse
Firmware contains multiple CSC. And, if you flash the firmware via odin sometimes the phone boots with Random CSC. Hence, I strongly feel the device applied a default CSC other than Iran(THR).
Once more please confirm it using Phone Info app, you can find it on Play Store. Or else, check whether the good-old secret code *#272*imeino.1# works or not.
If nothing helps, go for a clean flash of the latest Iranian firmware by putting CSC(not Home-CSC) firmware file in CSC tab on Odin.

Amijaz said:
Firmware contains multiple CSC. And, if you flash the firmware via odin sometimes the phone boots with Random CSC. Hence, I strongly feel the device applied a default CSC other than Iran(THR).
Once more please confirm it using Phone Info app, you can find it on Play Store. Or else, check whether the good-old secret code *#272*imeino.1# works or not.
Click to expand...
Click to collapse
Active CSC code is THR

Amijaz said:
Firmware contains multiple CSC. And, if you flash the firmware via odin sometimes the phone boots with Random CSC. Hence, I strongly feel the device applied a default CSC other than Iran(THR).
Once more please confirm it using Phone Info app, you can find it on Play Store. Or else, check whether the good-old secret code *#272*imeino.1# works or not.
If nothing helps, go for a clean flash of the latest Iranian firmware by putting CSC(not Home-CSC) firmware file in CSC tab on Odin.
Click to expand...
Click to collapse
putting CSC(not Home-CSC)
im gonna try this.....
this might be the issue....

hoomantanha said:
putting CSC(not Home-CSC)
im gonna try this.....
this might be the issue....
Click to expand...
Click to collapse
no....
didnt work :crying:

A5 2017 imei

Hello, I bought a used a5 2017 phone from ebay and when I received it, my sim not worked, then my brother's sim either. I think the imei is being blacklisted. Is there any way to change it, or how?

GedeonTaylor said:
Hello, I bought a used a5 2017 phone from ebay and when I received it, my sim not worked, then my brother's sim either. I think the imei is being blacklisted. Is there any way to change it, or how?
Click to expand...
Click to collapse
You could try reflashing stock modem. Also Does Samsung pay open?

iloveoreos said:
You could try reflashing stock modem. Also Does Samsung pay open?
Click to expand...
Click to collapse
How to do the first one? Can you please link a tutorial? And there is no samsung pay app on my phone. :/

GedeonTaylor said:
How to do the first one? Can you please link a tutorial? And there is no samsung pay app on my phone. :/
Click to expand...
Click to collapse
Someone know how?? I have never used Odin.
Here is a tutorial on the web for an older version: https://skipsoft.net/flashing-a-single-partition-i-e-system/

If the baseband version/ids/content in *#0011# isn't there, try
restarting the device?
changing firmware, preferably with a newer modem?
wiping data?
For installing firmware, there's odin. Use odin, the stock rom (official firmware), and samsung drivers, Insert the usb cable, switch off the device, hold power+volumedown+home(the button on the middle), grant its permission, select the stock rom in odin, start. New firmware might require odin 3.13.1. The error "failed: device _ binary _" means that the firmware is old, somewhere in the middle of the firmware version code is for example U5 or S5, if U6 or S6 is already on the device it won't install u5/s5.
To check if the device is blacklisted, the code is *#9900# > run cp based log > copy to sdcard. Select nothing else. It is available in the folder /sdcard/log/err/ , sdcard meaning internal storage or device storage or internal memory. Open LitmusLog....txt and scroll down, look for the part that says reject info list, look for Cause:6 (basically this device can't be used); Cause:3 (basically this device can't be used with this sim). It is also available in /sdcard/log/err/ss_log/*/cp_members.txt , but the reject cause is in hexadecimal, and resets after a reboot, compared to the other file that keeps reject causes until it's replaced or cleared in another menu. For more info contact your mobile network operator.

Bryan48765 said:
If the baseband version/ids/content in *#0011# isn't there, try
restarting the device?
changing firmware, preferably with a newer modem?
wiping data?
For installing firmware, there's odin. Use odin, the stock rom (official firmware), and samsung drivers, Insert the usb cable, switch off the device, hold power+volumedown+home(the button on the middle), grant its permission, select the stock rom in odin, start. New firmware might require odin 3.13.1. The error "failed: device _ binary _" means that the firmware is old, somewhere in the middle of the firmware version code is for example U5 or S5, if U6 or S6 is already on the device it won't install u5/s5.
To check if the device is blacklisted, the code is *#9900# > run cp based log > copy to sdcard. Select nothing else. It is available in the folder /sdcard/log/err/ , sdcard meaning internal storage or device storage or internal memory. Open LitmusLog....txt and scroll down, look for the part that says reject info list, look for Cause:6 (basically this device can't be used); Cause:3 (basically this device can't be used with this sim). It is also available in /sdcard/log/err/ss_log/*/cp_members.txt , but the reject cause is in hexadecimal, and resets after a reboot, compared to the other file that keeps reject causes until it's replaced or cleared in another menu. For more info contact your mobile network operator.
Click to expand...
Click to collapse
Sadly this not helped, the imei is blacklisted, and modem update not fixed it for me. :/ I contacted the network operator and because I'm not in contact with the person who sold me the phone, they can't tell me anything, because I don't have the rights. So I think the only way is the imei changing method, but I don't know if it's even possible or how.
Sorry if my English is bad, and thank you.

GedeonTaylor said:
Sadly this not helped, the imei is blacklisted, and modem update not fixed it for me. :/ I contacted the network operator and because I'm not in contact with the person who sold me the phone, they can't tell me anything, because I don't have the rights. So I think the only way is the imei changing method, but I don't know if it's even possible or how.
Sorry if my English is bad, and thank you.
Click to expand...
Click to collapse
I did a bit of research....
- it is illegal to change imei- if hat means anything to you, lol
- it is against Ebay's policy to sell phones with bad imei
- there is an xposed module to change imei but you would trip knox

iloveoreos said:
I did a bit of research....
- it is illegal to change imei- if hat means anything to you, lol
- it is against Ebay's policy to sell phones with bad imei
- there is an xposed module to change imei but you would trip knox
Click to expand...
Click to collapse
I think in my country it's not illegal, but not quite sure.. And i didn't know this, the guy wrote it down in the ebay ad even, so it went through.
Thank you, I will look into it, but I think I will sell the phone as a 'working display part'.. Motherboards are not cheap.

GedeonTaylor said:
I think in my country it's not illegal, but not quite sure.. And i didn't know this, the guy wrote it down in the ebay ad even, so it went through.
Thank you, I will look into it, but I think I will sell the phone as a 'working display part'.. Motherboards are not cheap.
Click to expand...
Click to collapse
It's perfectly normal except you can't use a sim card? Or is there more things wrong when imei is blocked?

iloveoreos said:
It's perfectly normal except you can't use a sim card? Or is there more things wrong when imei is blocked?
Click to expand...
Click to collapse
It's perfectly normal, everything works, except if I insert a sim, it will show a notification: ' can't connect to network '

GedeonTaylor said:
Hello, I bought a used a5 2017 phone from ebay and when I received it, my sim not worked, then my brother's sim either. I think the imei is being blacklisted. Is there any way to change it, or how?
Click to expand...
Click to collapse
Imei is locked to the device as far as I know. This is why a device can be blocked after being reported as stolen. If it is imei blocked then you should get a refund or make sure Ebay is involved if the seller refuses to.

sandsofmyst said:
Imei is locked to the device as far as I know. This is why a device can be blocked after being reported as stolen. If it is imei blocked then you should get a refund or make sure Ebay is involved if the seller refuses to.
Click to expand...
Click to collapse
Refunded, and thank you!

Need Android Pie firmware details for Unlocked T-Mobile Samsung S9

Hi All,
I have Samsung S9 Unlocked T-mobile from US and currently in India. Currently i have Oreo Version.
As all know, it doesnt have VOLTE option enabled which is needed for my sim network for voice calls to go through.
Somewhere i read Pie update will have VOLTE option and hence i am trying to update to Pie update.
I downloaded G960USQS6CSGB firmware for T-mobile, but before upating firmware using Odin, i got doubt if it will stick to T Mobile after update. This will make my phone not usable in India.
I tried to check online, but couldnt get direct answer and hence posting in new thread.
Can someone help clarify if it will lock the mobile to T-Mobile or will the phone be still in unlocked state?
Also i see two CSC files in the firmware folder. CSC and HOME_CSC. Which one to use?
If I should update with some other firmware for being unlocked and yet to get PIE update, please point to required firmware name or links.
Also will updating to PIE update will have VOLTE option ? Kindly confirm.
Thanks in Advance.

abalanag said:
Hi All,
I have Samsung S9 Unlocked T-mobile from US and currently in India. Currently i have Oreo Version.
As all know, it doesnt have VOLTE option enabled which is needed for my sim network for voice calls to go through.
Somewhere i read Pie update will have VOLTE option and hence i am trying to update to Pie update.
I downloaded G960USQS6CSGB firmware for T-mobile, but before upating firmware using Odin, i got doubt if it will stick to T Mobile after update. This will make my phone not usable in India.
I tried to check online, but couldnt get direct answer and hence posting in new thread.
Can someone help clarify if it will lock the mobile to T-Mobile or will the phone be still in unlocked state?
Also i see two CSC files in the firmware folder. CSC and HOME_CSC. Which one to use?
If I should update with some other firmware for being unlocked and yet to get PIE update, please point to required firmware name or links.
Also will updating to PIE update will have VOLTE option ? Kindly confirm.
Thanks in Advance.
Click to expand...
Click to collapse
csc will factory reset your phone, home_csc wont
volte wasnt removed from pie, so that shouldnt be an issue
the firmware version you posted has the 6th bootloader revision, im betting here is a 7th available for your phone, but the 6th version should be fine as well
as far as the unlocked state of the phone goes, it shouldnt re-lock, but im paranoid lol. Have you looked into the U1 versions of the phones firmware? Theyre inherently unlocked firmwares and dont have any of that irritating bloatware **** in them

youdoofus said:
csc will factory reset your phone, home_csc wont
volte wasnt removed from pie, so that shouldnt be an issue
the firmware version you posted has the 6th bootloader revision, im betting here is a 7th available for your phone, but the 6th version should be fine as well
as far as the unlocked state of the phone goes, it shouldnt re-lock, but im paranoid lol. Have you looked into the U1 versions of the phones firmware? Theyre inherently unlocked firmwares and dont have any of that irritating bloatware **** in them
Click to expand...
Click to collapse
Thanks youdoofus the inputs. Say by chance if it gets locked, is there a way to unlock the phone again from here?
may be then i will try to load U1 versions otherwise. Thanks alot.

abalanag said:
Thanks youdoofus the inputs. Say by chance if it gets locked, is there a way to unlock the phone again from here?
may be then i will try to load U1 versions otherwise. Thanks alot.
Click to expand...
Click to collapse
if it has no financial obligation to any carrier and the phone locks to that carrier, then the carrier it locked to would be required to release it. I cant imagine how it would lock to t-mob tho

Factory unlocked phones stay unlocked, no matter what firmware you flash.
Carrier locked phones that were properly unlocked by the carrier (they provide the code to SIM unlock the phone) will stay unlocked, again, no matter what firmware you flash to it - as long as it's compatible. Flashing the wrong firmware may just brick the phone. But, at least it's still SIM unlocked.
Phones that had some kind of software hack installed to trick the phone into thinking it's unlocked will lose the unlock status when you flash a firmware that also wipes the phone. Then it will come back as carrier locked again, because the hack is gone.
That last case is the only case I know of that will "re-lock" a phone. I've never heard of a carrier unlocked phone spontaneously re-locking under any circumstance.

Hi,
Thanks for the details. I tried to flash G960U1UES6CSG4_G960U1OYM6CSG4_XAA firmware. But while loading AP file in ODIN, it gave some error. Couldnt understand what is the error as its in chinese.
Then i loaded G960USQS6CSGB_G960UOYN6CSGB_TMB firmware which i downloaded previously. This got loaded in ODIN without any issues. And i am able to flash to phone. On rebooting, saw that phone moved to Pie version.
But i couldnt find VOLTE option (Enhanced calling) option. Does anyone know which version will enable that option?
Or anyother way to enable that please.
Thanks in advance.

joeldf said:
Factory unlocked phones stay unlocked, no matter what firmware you flash.
Carrier locked phones that were properly unlocked by the carrier (they provide the code to SIM unlock the phone) will stay unlocked, again, no matter what firmware you flash to it - as long as it's compatible. Flashing the wrong firmware may just brick the phone. But, at least it's still SIM unlocked.
Phones that had some kind of software hack installed to trick the phone into thinking it's unlocked will lose the unlock status when you flash a firmware that also wipes the phone. Then it will come back as carrier locked again, because the hack is gone.
That last case is the only case I know of that will "re-lock" a phone. I've never heard of a carrier unlocked phone spontaneously re-locking under any circumstance.
Click to expand...
Click to collapse
another user just posted up in another thread that they had a factory cricket phone that got unlocked, he put an at&t sim in it and it installed at&t apps and locked the phone to at&t FWIW
---------- Post added at 02:42 PM ---------- Previous post was at 02:36 PM ----------
abalanag said:
Hi,
Thanks for the details. I tried to flash G960U1UES6CSG4_G960U1OYM6CSG4_XAA firmware. But while loading AP file in ODIN, it gave some error. Couldnt understand what is the error as its in chinese.
Then i loaded G960USQS6CSGB_G960UOYN6CSGB_TMB firmware which i downloaded previously. This got loaded in ODIN without any issues. And i am able to flash to phone. On rebooting, saw that phone moved to Pie version.
But i couldnt find VOLTE option (Enhanced calling) option. Does anyone know which version will enable that option?
Or anyother way to enable that please.
Thanks in advance.
Click to expand...
Click to collapse
if your Odin error messages are in Chinese, youve obtained a modified version. Itll probably work, but youll get that Chinese stuff whenever it needs to tell you anything. I dont know which versions have volte tbh. Sorry man.

youdoofus said:
another user just posted up in another thread that they had a factory cricket phone that got unlocked, he put an at&t sim in it and it installed at&t apps and locked the phone to at&t FWIW
---------- Post added at 02:42 PM ---------- Previous post was at 02:36 PM ----------
if your Odin error messages are in Chinese, youve obtained a modified version. Itll probably work, but youll get that Chinese stuff whenever it needs to tell you anything. I dont know which versions have volte tbh. Sorry man.
Click to expand...
Click to collapse
Thanks youdoofus for trying to help. For me atleast it didnt get locked when i moved to Pie. I will try other methods.
I will try to root the phone for enabling volte, but the methods that i tried didnt work.

youdoofus said:
another user just posted up in another thread that they had a factory cricket phone that got unlocked, he put an at&t sim in it and it installed at&t apps and locked the phone to at&t FWIW
Click to expand...
Click to collapse
That's just weird.

joeldf said:
That's just weird.
Click to expand...
Click to collapse
yeah, sort of. The CSC's on these things are weird. Im starting to believe that these new versions of android are just like windows ISOs where they have all the versions compressed into one file and it uses a directory file to tell the firmware which version to install. Im sure a code writing dev can confirm or deny this thought, but at this point its merely a weak theory

2019-10-08_21:17:56 Device Info:
MAC : 44:91:60:6F8:11
MACs : 44:91:60:6F8:11 46:91:60:6F8:11
Root : false
VirtualMachine : false
build.characteristics : nosdcard
build.display.id : PPR1.180610.011.G960USQS6CSGB
build.fingerprint : samsung/starqltesq/starqltesq:9/PPR1.180610.011/G960USQS6CSGB:user/release-keys
build.host : SWDH7918
build.id : PPR1.180610.011
build.incremental : G960USQS6CSGB
build.release : 9
build.sdk : 28
build.tags : release-keys
build.time : 1563280950
build.type : user
build.user : dpi
clientidbase : android-samsung-ss android-tmus-us-revc
cpu.abi : arm64-v8a
cpu.abilist : arm64-v8a,armeabi-v7a,armeabi
cpu.abilist32 : armeabi-v7a,armeabi
cpu.abilist64 : arm64-v8a
hardware : qcom
iso-country : us
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product.board : sdm845
product.brand : samsung
product.device : starqltesq
product.manufacturer : samsung
product.model : SM-G960U
product.name : starqltesq
Time Used: 2.00 s

CSC Change is still possible?

Hey Guys,
Just wanted to check whether any working methods are around to change the CSC of a Note 10+
Couldn't find any guides apart from the ones which are in Note 9 Sections.
Any support on this is much appreciated!

JazonX said:
Hey Guys,
Just wanted to check whether any working methods are around to change the CSC of a Note 10+
Couldn't find any guides apart from the ones which are in Note 9 Sections.
Any support on this is much appreciated!
Click to expand...
Click to collapse
Im also looking for a solution for this. SamKey's paid service is apparently supporting this but im unsure of the method their software uses and its a paid service. Users in Australia (like me) are having issues with RCS services through Telstra (TEL) because the Open Variant bought direct from Samsung not having the correct CSC. Some users have reported changing the CSC through SamKey successfully.
I have tried flashing with Telstra firmware but no luck.

maeneak said:
Im also looking for a solution for this. SamKey's paid service is apparently supporting this but im unsure of the method their software uses and its a paid service. Users in Australia (like me) are having issues with RCS services through Telstra (TEL) because the Open Variant bought direct from Samsung not having the correct CSC. Some users have reported changing the CSC through SamKey successfully.
I have tried flashing with Telstra firmware but no luck.
Click to expand...
Click to collapse
Paid Service?
Damn... We are also headed towards a Huawei Future now?

JazonX said:
Hey Guys,
Just wanted to check whether any working methods are around to change the CSC of a Note 10+
Couldn't find any guides apart from the ones which are in Note 9 Sections.
Any support on this is much appreciated!
Click to expand...
Click to collapse
Yes I have changed my csc on my note 10+ unlocked by *#272*imei#

Learning0876 said:
Yes I have changed my csc on my note 10+ unlocked by *#272*imei#
Click to expand...
Click to collapse
i do this didn't work which rom you are

maeneak said:
Some users have reported changing the CSC through SamKey successfully.
Click to expand...
Click to collapse
Yes, the only one work for me. 976B

maeneak said:
Im also looking for a solution for this. SamKey's paid service is apparently supporting this but im unsure of the method their software uses and its a paid service. Users in Australia (like me) are having issues with RCS services through Telstra (TEL) because the Open Variant bought direct from Samsung not having the correct CSC. Some users have reported changing the CSC through SamKey successfully.
I have tried flashing with Telstra firmware but no luck.
Click to expand...
Click to collapse
I initially did *#272*IMEI# and was able to switch between CSC. When I switched to XAA, I was stuck and could not able to use the *#272*IMEI# anymore.. So I had XAA/XAA/ATT.. I saw many were stuck.
Found a solution that worked for me is as follows. Try at your own risk.
Downloaded the tool from
https://www.mysterious-dev.com/2020/05/changecsc-all-samsung-free-tool-android.html
and downloaded the ChangeCSC Software tool.. . watched the video couple of times.. The process lets you install custom THEME.. I was getting "Update" "Delete" and "Buy" ..
What did was
install another random theme
then went back to the program and clicked change CSC again
this time when I choose the custom theme pack, I saw the "Try now".. after that I followed the instruction to about phone->legal and clicked on CHANGE Carrier Android 10 and VOILA!!! I got that CSC change page.. I saw XAA was selected and I changed to TMB... after that "Sales& Network Code Change" and clicked ok.. .The phone restarted and saw the T-Mobile logo!!!!
I even tried the *#272*IMEI# and this time it worked and showed me the CSC screen!!!
Hope this helps anyone who is stuck...My phone now says TMB/TMB/ATT!!!

visualpro said:
I initially did *#272*IMEI# and was able to switch between CSC. When I switched to XAA, I was stuck and could not able to use the *#272*IMEI# anymore.. So I had XAA/XAA/ATT.. I saw many were stuck.
Found a solution that worked for me is as follows. Try at your own risk.
Downloaded the tool from
https://www.mysterious-dev.com/2020/05/changecsc-all-samsung-free-tool-android.html
and downloaded the ChangeCSC Software tool.. . watched the video couple of times.. The process lets you install custom THEME.. I was getting "Update" "Delete" and "Buy" ..
What did was
install another random theme
then went back to the program and clicked change CSC again
this time when I choose the custom theme pack, I saw the "Try now".. after that I followed the instruction to about phone->legal and clicked on CHANGE Carrier Android 10 and VOILA!!! I got that CSC change page.. I saw XAA was selected and I changed to TMB... after that "Sales& Network Code Change" and clicked ok.. .The phone restarted and saw the T-Mobile logo!!!!
I even tried the *#272*IMEI# and this time it worked and showed me the CSC screen!!!
Hope this helps anyone who is stuck...My phone now says TMB/TMB/ATT!!!
Click to expand...
Click to collapse
Did this method wipe your data and factory reset your phone?

alireza_simkesh said:
Did this method wipe your data and factory reset your phone?
Click to expand...
Click to collapse
Hello,
Prior to doing the process. I used smartswitch and backed up my phone completely.. I also did factory reset the phone.. *** Since I was going to use a new method/tool, I was not sure so wanted to make sure it does not interfere with any existing account/app on the phone. Once I was able to get to the CSC screen and changed to TMB, I went back again to make sure do a factory wipe and start complete fresh out. Hope this helps. Good luck!

visualpro said:
Hello,
Prior to doing the process. I used smartswitch and backed up my phone completely.. I also did factory reset the phone.. *** Since I was going to use a new method/tool, I was not sure so wanted to make sure it does not interfere with any existing account/app on the phone. Once I was able to get to the CSC screen and changed to TMB, I went back again to make sure do a factory wipe and start complete fresh out. Hope this helps. Good luck!
Click to expand...
Click to collapse
Thanks, but I am wondering if the tool wipes out the data on the phone?
The Mysterious Dev tool that you mentioned, when the tool was changing the CSC, did the tool factory reset your phone and wipe it?

JazonX said:
Hey Guys,
Just wanted to check whether any working methods are around to change the CSC of a Note 10+
Couldn't find any guides apart from the ones which are in Note 9 Sections.
Any support on this is much appreciated!
Click to expand...
Click to collapse
alireza_simkesh said:
Thanks, but I am wondering if the tool wipes out the data on the phone?
The Mysterious Dev tool that you mentioned, when the tool was changing the CSC, did the tool factory reset your phone and wipe it?
Click to expand...
Click to collapse
hmm.. don't recall if it wiped.. I already had T-Mobile sim inside.. so when I saw the CSC selection page and as soon I choose TMB it restarted and came with T-Mobile splash Page, at that point I know it worked, so before even finishing up the boot process, I rebooted in recovery and did the factory reset

alireza_simkesh said:
Thanks, but I am wondering if the tool wipes out the data on the phone?
The Mysterious Dev tool that you mentioned, when the tool was changing the CSC, did the tool factory reset your phone and wipe it?
Click to expand...
Click to collapse
I had to do the CSC changing today and it simply rebooted and displayed the new CSC logo. It was with AT&T and when I change it to TMB. I get the T-Mobile boot logo.. I was able to get back in to the device without loosing any data.. The CSC showed TMB/TMB/TMB.. But I noticed the ringer/notifications sound still remained the AT&T settings. So to answer your initial question, my phone didn't get wiped out when switching the CSC.
Thx

visualpro said:
I had to do the CSC changing today and it simply rebooted and displayed the new CSC logo. It was with AT&T and when I change it to TMB. I get the T-Mobile boot logo.. I was able to get back in to the device without loosing any data.. The CSC showed TMB/TMB/TMB.. But I noticed the ringer/notifications sound still remained the AT&T settings. So to answer your initial question, my phone didn't get wiped out when switching the CSC.
Thx
Click to expand...
Click to collapse
Thanks.
After changing your CSC to TMB, are you getting TMB updates (OTA) or ATT updates?

alireza_simkesh said:
Thanks.
After changing your CSC to TMB, are you getting TMB updates (OTA) or ATT updates?
Click to expand...
Click to collapse
After switching to TMB.. I have also wiped out and installed T-Mobile firmware via ODIN.. Getting all TMB OTA updates.

Learning0876 said:
Yes I have changed my csc on my note 10+ unlocked by *#272*imei#
Click to expand...
Click to collapse
Thank you very much. I was just able to unlock my N976U from tmobile to unlock model. I am also getting LTE finally

JazonX said:
Hey Guys,
Just wanted to check whether any working methods are around to change the CSC of a Note 10+
Couldn't find any guides apart from the ones which are in Note 9 Sections.
Any support on this is much appreciated!
Click to expand...
Click to collapse
I have found *some* Samsung models can still change CSC via firmware flash in Odin by following these pre requisites...
- disable find my phone
- sign out of Google and samsung accounts
- developer mode .... enable oem unlock
- flash a single CSC stock firmware in odin (do not use home-csc)
- phone will be completely wjped but after first boot and running setup, CSC will be change to match new firmware

Have any one tried

dezborders said:
I have found *some* Samsung models can still change CSC via firmware flash in Odin by following these pre requisites...
- disable find my phone
- sign out of Google and samsung accounts
- developer mode .... enable oem unlock
- flash a single CSC stock firmware in odin (do not use home-csc)
- phone will be completely wjped but after first boot and running setup, CSC will be change to match new firmware
Click to expand...
Click to collapse
CSC Change:
https://forum.xda-developers.com/galaxy-s20/how-to/free-csc-change-apk-s20-t4116015
SIMPLY DOWNLOAD GOOGLE PHONE APP , DIALL THIS CODE AND ALL CSC APEAR.
*#*#27262826#*#*
Back up first, Everything on the device will be deleted.
thanks @adeltamimy6

this worked for me changed to btu. but still not being offered one ui beta 3. any ideas do i need certain software on phone too phone is sm- n976b. If so what do i need

Samkey works and costs about $10 (Min 3 tokens and 1 token to change CSC) - done it several time on 3 of my Note10+ to change to Telstra CSC - VOLTE / WIFI Calling etc works afterward, It didnt Wipe either
checkout andtron.com

Emergency calls only. HELP!

Hello
I bought a used s9 a few months back. It had dual sim. In "about phone" it said G960F and was on android 9. A few days ago, I wanted to flash android 10 so I downloaded firmware for G960F, booted my phone in download mode and SURPRISE. The whole thing was in Korean and of course it was a G960N model. So I downloaded firmware for G960N this time and flashed it. Everything went perfect but when the phone booted up, It had no sim service.
I've tried everything I've found on the forums so far related to emergency calls only or no sim service.
Any kind of help would be appreciated. I have no sim service for 5 days now.
Things I've tried so far:
Flashing my phone again with android 9 stock firmware, which I can't do anymore as I've updated the bootloader lol.
Flashing custom roms
Changing csc from SKC to KOO
Flashing OXM CSC as I live in Pakistan
Flashing different modems and basebands
Nothing worked

Try flashing back a G960F android 10 firmware.

LR7875 said:
Try flashing back a G960F android 10 firmware.
Click to expand...
Click to collapse
How can I do that? I always get a PIT error.

What if you don't flash the pit file?

⁴
LR7875 said:
What if you don't flash the pit f
Click to expand...
Click to collapse
LR7875 said:
What if you don't flash the pit file?
Click to expand...
Click to collapse
Remove the pit file from csc folder?

Maybe

LR7875 said:
Maybe
Click to expand...
Click to collapse
Now I'm getting a bootloader error. Tried skipping BL but odin gave me radio error this time

So skipping each part just give an error concerning the next part?

LR7875 said:
So skipping each part just give an error concerning the next part?
Click to expand...
Click to collapse
Yeah

thepredictor said:
Yeah
Click to expand...
Click to collapse
In service mode IMEI is NG. Does that have anything to do with no network issue?

IMEI status NG
Hi, I'm unable to make call because of not registred on network problem (my phone is G925I) When checking *#06#, it gives me my correct imei code But when testing *#0011#, i got IMEI Status: NG What does NG mean and if it is a problem,how to...
forum.xda-developers.com

LR7875 said:
IMEI status NG
Hi, I'm unable to make call because of not registred on network problem (my phone is G925I) When checking *#06#, it gives me my correct imei code But when testing *#0011#, i got IMEI Status: NG What does NG mean and if it is a problem,how to...
forum.xda-developers.com
Click to expand...
Click to collapse
Done all of that. No luck

OK, let's go back to beginning: you've bought the used phone. 960F never was (as factory leaving) dual sim phone.
so, let's start from the beginning:
contact the seller and ask what the hell have you bought (if it was any variant of the S9 at all.. somehow I doubt it).
2nd: write down the IMEI and serial number, and check with Samsung if this configuration ever existed (if not, what I suppose, the IMEI/sn info about the REAL model can give you a hint what have you bought).
Having the above info in hands, find the "service firmware", 5 files ROM for your device and try to flash it.
If it will not work still, I'm afraid you have two options:
1. check IMEI against stolen devices with your carrier.
2. Go to Samsung service asking for help.

(if it was any variant of the S9 at all.. somehow I doubt it).
Click to expand...
Click to collapse
Well mostly it isn't a fake mediatek phone as it will not even have a download mode.
Probably he bought a shi**ily refurbished phone with it's internals mixed from multiple versions of the s9, in the best case.(a Frankenstein variant of the S9)

LR7875 said:
Well mostly it isn't a fake mediatek phone as it will not even have a download mode.
Probably he bought a shi**ily refurbished phone with it's internals mixed from multiple versions of the s9, in the best case.(a Frankenstein variant of the S9)
Click to expand...
Click to collapse
spamtrash said:
OK, let's go back to beginning: you've bought the used phone. 960F never was (as factory leaving) dual sim phone.
so, let's start from the beginning:
contact the seller and ask what the hell have you bought (if it was any variant of the S9 at all.. somehow I doubt it).
2nd: write down the IMEI and serial number, and check with Samsung if this configuration ever existed (if not, what I suppose, the IMEI/sn info about the REAL model can give you a hint what have you bought).
Having the above info in hands, find the "service firmware", 5 files ROM for your device and try to flash it.
If it will not work still, I'm afraid you have two options:
1. check IMEI against stolen devices with your carrier.
2. Go to Samsung service asking for help.
Click to expand...
Click to collapse
I'm going to solve this mystery for both of you. The phone he bought is indeed an S9. Here in Pakistan, 'software' guys in shops can convert these to dual sim models with some z3x and Chimera f*kery.
As for why his phone isn't working - it is because the phone had a tampered IMEI to bypass local custom charges levied on all imported phones (insane charges, doubles the price of these kinda phones). Once he flashed a new image on his phone, his IMEI status would have become NG instead of OK, which prevents the phone from accessing any networks.
Solution is to visit the same 'software' guys, ask them to 'patch' the phone. It is a 5 minute process, requires root (which these phones already have).
Source: Am Pakistani. Own a phone.