Database Users

[Q] SM-N910C LTE not working in UK

Hi guys,
I am new to Samsung but like many I was tempted by the Note 4. I bought my Note 4 in Dubai (unlocked and not tied to any provider) but when I tried using it in the UK with a UK SIM (EE) I am not able to make/receive calls when set on LTE/WCDMA/GSM but I can when I select GSM Only. Samsung UK is not interested, Samsung Dubai poit me towards Samsung Egypt (because apparently this is an Egypt region phone) and Samsung Egypt do not understand what my problem is and keep sending my region unblock codes when the phone is not region locked.
Has anyone had this before and if yes what did you do to fix this?
AP: N910CXXU1ANK5
CP: N910CXXU1ANK5
CSC: N910COJV1ANK5
I have been reading a lot about rooting and flashing ROMs but being new to this I am not confident enough to get into all that. I hope there is a solution without the need for rooting !!!

KK2244 said:
Hi guys,
I am new to Samsung but like many I was tempted by the Note 4. I bought my Note 4 in Dubai (unlocked and not tied to any provider) but when I tried using it in the UK with a UK SIM (EE) I am not able to make/receive calls when set on LTE/WCDMA/GSM but I can when I select GSM Only. Samsung UK is not interested, Samsung Dubai poit me towards Samsung Egypt (because apparently this is an Egypt region phone) and Samsung Egypt do not understand what my problem is and keep sending my region unblock codes when the phone is not region locked.
Has anyone had this before and if yes what did you do to fix this?
AP: N910CXXU1ANK5
CP: N910CXXU1ANK5
CSC: N910COJV1ANK5
I have been reading a lot about rooting and flashing ROMs but being new to this I am not confident enough to get into all that. I hope there is a solution without the need for rooting !!!
Click to expand...
Click to collapse
There's recent update for dubai region, u can update & try may they resolved this problem. R u sure your Service provider supporting 4g for your sim?

jdomadia said:
There's recent update for dubai region, u can update & try may they resolved this problem. R u sure your Service provider supporting 4g for your sim?
Click to expand...
Click to collapse
SIM works on my HTC One and 4G signal here good so I do not think it is the SIM. I updated firmware two days ago using Kies but no change. I am starting to suspect some sort of network blacklisting by Samsung but not sure. I also spoke to my network provider and problem not with them.
I want to test the phone in Middle East first to make sure that it is not some hardware fault bit if not my only option may be rooting and flashing different ROMs. I am also hoping that Lollipop may solve it but no way to get it now as I am not rooted yet.

KK2244 said:
SIM works on my HTC One and 4G signal here good so I do not think it is the SIM. I updated firmware two days ago using Kies but no change. I am starting to suspect some sort of network blacklisting by Samsung but not sure. I also spoke to my network provider and problem not with them.
I want to test the phone in Middle East first to make sure that it is not some hardware fault bit if not my only option may be rooting and flashing different ROMs. I am also hoping that Lollipop may solve it but no way to get it now as I am not rooted yet.
Click to expand...
Click to collapse
Download Samsung phone info from play store, check your region, also you can check knox warranty is void? U can also check refurbishment check from same app, seems to me u purchased online, not from authorised store of dubai.

KK2244 said:
SIM works on my HTC One and 4G signal here good so I do not think it is the SIM. I updated firmware two days ago using Kies but no change. I am starting to suspect some sort of network blacklisting by Samsung but not sure. I also spoke to my network provider and problem not with them.
I want to test the phone in Middle East first to make sure that it is not some hardware fault bit if not my only option may be rooting and flashing different ROMs. I am also hoping that Lollipop may solve it but no way to get it now as I am not rooted yet.
Click to expand...
Click to collapse
This are the mine screen shot for dubai rom, u can compare.

Thanks for the screenshots. I compared with yours and it is now even more clear that mine is an Egypt phone. Do you know if I can flash the UAE firmware on my phone with or without rooting and if that would work so that the CP, SP and CSC are the same as yours rather than the Egypt ones?

KK2244 said:
Thanks for the screenshots. I compared with yours and it is now even more clear that mine is an Egypt phone. Do you know if I can flash the UAE firmware on my phone with or without rooting and if that would work so that the CP, SP and CSC are the same as yours rather than the Egypt ones?
Click to expand...
Click to collapse
Yes root is not required to flash U.A.E firmware, u will get all as mine, u need to clear cache & data before & after flashing through odin.
---------- Post added at 02:05 PM ---------- Previous post was at 02:02 PM ----------
KK2244 said:
Thanks for the screenshots. I compared with yours and it is now even more clear that mine is an Egypt phone. Do you know if I can flash the UAE firmware on my phone with or without rooting and if that would work so that the CP, SP and CSC are the same as yours rather than the Egypt ones?
Click to expand...
Click to collapse
Before u flash first match your imei dial *#1234# & under battery.

KK2244 said:
Hi guys,
I am new to Samsung but like many I was tempted by the Note 4. I bought my Note 4 in Dubai (unlocked and not tied to any provider) but when I tried using it in the UK with a UK SIM (EE) I am not able to make/receive calls when set on LTE/WCDMA/GSM but I can when I select GSM Only. Samsung UK is not interested, Samsung Dubai poit me towards Samsung Egypt (because apparently this is an Egypt region phone) and Samsung Egypt do not understand what my problem is and keep sending my region unblock codes when the phone is not region locked.
Has anyone had this before and if yes what did you do to fix this?
AP: N910CXXU1ANK5
CP: N910CXXU1ANK5
CSC: N910COJV1ANK5
I have been reading a lot about rooting and flashing ROMs but being new to this I am not confident enough to get into all that. I hope there is a solution without the need for rooting !!!
Click to expand...
Click to collapse
my friends have this similar problem and its fix
This is how "you need a working sim from the country when you buy the samsung phone"
all you have to do is make a international call for 15 minutes to the original country
example u bought the phone in egypt so u need a working egypt simcard just call the operator in egypt and listen to the operator for 15 minuts from UK after 15 minutes (make it 20 minutes just in case) turn off your phone and change it with the UK sim card
this method works for me
u dont need to flash or root the phone
just remember this method only work with samsung unlock phones from middle east

Flashing BTU CSC results in XEU

Hi all,
I have today received my S8 from EE and flashed the latest stock BTU firmware with Odin.
My phone is reporting that I have an XEU CSC. Is there any way without root to get the BTU CSC to register correctly?
Cheers
Edit: It also says that it's manually applying EVR if I boot into recovery. Odd..

XEU and BTU are the same. Also, all unlocked variants of the S8/S8+ in Europe share a common "merged" CSC, OXM, which will activate the proper CSC based on the first SIM card inserted (hence why it's important to insert a SIM before first boot). XEU is the new BTU, so just live with it.
The device also has its stock CSC code burned into it, so even though you can flash another CSC, it will always know what the original CSC was.

fonix232 said:
XEU and BTU are the same. Also, all unlocked variants of the S8/S8+ in Europe share a common "merged" CSC, OXM, which will activate the proper CSC based on the first SIM card inserted (hence why it's important to insert a SIM before first boot). XEU is the new BTU, so just live with it.
The device also has its stock CSC code burned into it, so even though you can flash another CSC, it will always know what the original CSC was.
Click to expand...
Click to collapse
Excellent - Thank you for clearing that up.
Looks like they've been busy making some changes since the S7

Which files did you flash I've got ee and thought about doing this will we still receive ota updates

dalelindley76 said:
Which files did you flash I've got ee and thought about doing this will we still receive ota updates
Click to expand...
Click to collapse
Latest BTU SM-G950F firmware from http://fw.updato.com
Updates should be fine and also released a lot sooner as there's no waiting for EE to release them. Wi-Fi calling is fine too.

mmotti said:
Latest BTU SM-G950F firmware from http://fw.updato.com
Updates should be fine and also released a lot sooner as there's no waiting for EE to release them. Wi-Fi calling is fine too.
Click to expand...
Click to collapse
Did you flash the home csc

dalelindley76 said:
Did you flash the home csc
Click to expand...
Click to collapse
No. Standard CSC file with a factory reset/cache clear.

I went the other way. Unlocked BTU to EE EVR to get Volte.
Considering going back to get timely updates. EE suck at updating.

mgbosshogg said:
I went the other way. Unlocked BTU to EE EVR to get Volte.
Considering going back to get timely updates. EE suck at updating.
Click to expand...
Click to collapse
They do. I don't make use of Volte personally. I'd sooner have updated software so long as my Wi-Fi calling works

mmotti said:
They do. I don't make use of Volte personally. I'd sooner have updated software so long as my Wi-Fi calling works
Click to expand...
Click to collapse
Yeah, there are quite a few places on my daily travels that would not have any signal without Volte unfortunately. I am one of those in the minority that use their phone for calling
If I didn't I would have left it on BTU for sure. Unfortunately, county wide, EE seem to have the best coverage and speed.

mgbosshogg said:
Yeah, there are quite a few places on my daily travels that would not have any signal without Volte unfortunately. I am one of those in the minority that use their phone for calling
If I didn't I would have left it on BTU for sure. Unfortunately, county wide, EE seem to have the best coverage and speed.
Click to expand...
Click to collapse
Calling? What's calling? Haha.
What a pain that the necessary files aren't included with XEU EE are already an update behind at the moment.

I'm on vod thinking of flashing XEU as I don't like Vodafone adding and tinkering with touch wiz etc does secure folder still work etc.

mimo2008 said:
I'm on vod thinking of flashing XEU as I don't like Vodafone adding and tinkering with touch wiz etc does secure folder still work etc.
Click to expand...
Click to collapse
Yeah secure folder is fine and I believe remains so, so long as you are flashing stock firmware correctly and don't do anything to trip Knox

Ok thankyou also did you have de bugging ticked and oem unlocked ticked in development options

mimo2008 said:
Ok thankyou also did you have de bugging ticked and oem unlocked ticked in development options
Click to expand...
Click to collapse
No I flashed everything even before the first boot. I had everything ready before the phone arrived.
Might want to remove your Google and samsung account prior to flashing though.

mmotti said:
No I flashed everything even before the first boot. I had everything ready before the phone arrived.
Might want to remove your Google and samsung account prior to flashing though.
Click to expand...
Click to collapse
Thankyou for info.
I decided to flash latest xeu and not sure about you but since i did the flash my touch wiz feels a lot smoother and faster than it did with Vodafone software on there.
Think i made the right choice.

mimo2008 said:
Thankyou for info.
I decided to flash latest xeu and not sure about you but since i did the flash my touch wiz feels a lot smoother and faster than it did with Vodafone software on there.
Think i made the right choice.
Click to expand...
Click to collapse
Could well be! I didn't boot up before flashing lol

S8 security was changed so that CSC can only be changed with a supporting SIM card installed if you are not rooted.

mgbosshogg said:
I went the other way. Unlocked BTU to EE EVR to get Volte.
Considering going back to get timely updates. EE suck at updating.
Click to expand...
Click to collapse
Where are you located and who is your provider? I'm on BTU in the US with T-Mobile and would like to get VoLTE...

Can someone help me? I have G950FD which Firmware should I flash for my phone? I am using this model in the US

Questions about official firmware flashing

Hi all, not had a Samsung phone since the first Note so cant remember a thing about flashing/de-branding on these aside from Odin and I know things might be different now with Knox.
So I've just ordered a Vodafone S8 in the UK and I'm considering switching firmware when it comes to an unbranded one but was hoping someone could point me to a good guide of where to get the firmwares (and which one to use) for the latest updates etc.
Is this still a fairly easy job and doable without unlocking and rooting/tripping knox? Do you lose access to wifi calling on unbranded phones on Vodafone?
Thanks

Go to updato.com and search firmwares for the G950U1 (If those are the snapdragon variant). I always use the XAA as it's not specific to any carrier.
It's still the same method but I'd use the modded Odin which has been posted around here, rename each file and remove .md5 from the end of them. From there it all matches up. BL, AP, Etc. When flashing the csc file, HOME CSC will NOT wipe your device after flash, CSC WILL wipe it. You'll want to wipe initially anyway.
It doesn't trip Knox and you'll lose wifi calling and volte

joe3681 said:
Go to updato.com and search firmwares for the G950U1 (If those are the snapdragon variant). I always use the XAA as it's not specific to any carrier.
It's still the same method but I'd use the modded Odin which has been posted around here, rename each file and remove .md5 from the end of them. From there it all matches up. BL, AP, Etc. When flashing the csc file, HOME CSC will NOT wipe your device after flash, CSC WILL wipe it. You'll want to wipe initially anyway.
It doesn't trip Knox and you'll lose wifi calling and volte
Click to expand...
Click to collapse
He's got a g950f which is the European model(exynos)

Thanks for the info, i did a little more research myself and looking at my software version it says SAOMC_SM-G950F_OXM_BTU_0062
My CSC's are listed as BTU/BTU/BTU which as far as im aware means its already the unlocked version correct? There was no vodafone junk preinstalled but wifi calling shows up as working. So im a little lost now, I dont think i need to do anything and I have wifi calling so all seems ok.

Oblox said:
Thanks for the info, i did a little more research myself and looking at my software version it says SAOMC_SM-G950F_OXM_BTU_0062
My CSC's are listed as BTU/BTU/BTU which as far as im aware means its already the unlocked version correct? There was no vodafone junk preinstalled but wifi calling shows up as working. So im a little lost now, I dont think i need to do anything and I have wifi calling so all seems ok.
Click to expand...
Click to collapse
Where did you get your S8 from, direct from Vodafone? I've had mine for about 6 weeks now and got mine from Vodafone direct and my CSC is VOD, my current firmware is:
G950FXXU1AQH3
I was just looking into flashing mine with the BTU firmware so I can get the Oreo beta.
Sent from my SM-G950F using Tapatalk

I got mine from www.mobilephonesdirect.co.uk they told me it wasn't unlocked so I assumed that meant it came from Vodafone. Not tried any other SIM in it yet to test that side.
Wifi calling definitely works, there's no vodafone crap installed no branding anywhere.
According to
https://www.sammobile.com/firmwares/galaxy-s8/SM-G950F/VOD/
there is G950FXXU1AQI7 for the Vodafone branded CSC im on G950FXXU1AQH3 for BTU.

Oblox said:
I got mine from www.mobilephonesdirect.co.uk they told me it wasn't unlocked so I assumed that meant it came from Vodafone. Not tried any other SIM in it yet to test that side.
Wifi calling definitely works, there's no vodafone crap installed no branding anywhere.
According to
https://www.sammobile.com/firmwares/galaxy-s8/SM-G950F/VOD/
there is G950FXXU1AQI7 for the Vodafone branded CSC im on G950FXXU1AQH3 for BTU.
Click to expand...
Click to collapse
Ah, I see so yours is definitely unlocked then as I've purchased from them before, same as CPW.
Yes I've checked samfirmware too, I will need to flash the older BTU firmware then by looks of it, however I need to look into it a bit more as I've read somewhere that flashing the S8 is a bit different.

Help please, I flashed rom and ruined phone

Sorry, but I am a newbie so forgive me if this is stupid!
1 I had a slight battery problem so decided (why??) to flash the rom on my unlocked S7 edge. I used the 'BTU' version.
2 after flashing rom i cannot make or receive voice calls
3 i went into a samsung store they said it was an unlocked SM-G935F and had 'XEU' firmware.
4 they kindly reflashed this for me but it didn't solve the problem
5 I have just tried downloading and reflashing again with the XEU firmware. But I still cannot make or receive calls
one weird thing is that the odd text seems to get through to me
Anyone got any ideas on how to unbrick my phone? Very much appreciated.
Sorry, one extra piece of information. I am on '3'. But if I put an O2 sim in the phone it can make and receive calls. But before my first flashing it worked fine with '3'.
It seems I must have flashed the wrong firmware but have no idea what was on there. The previous owner used a EE sim in it. But it was bought not locked to a network - i think. There was no network branding on the phone.

bobbaker1970 said:
Sorry, but I am a newbie so forgive me if this is stupid!
1 I had a slight battery problem so decided (why??) to flash the rom on my unlocked S7 edge. I used the 'BTU' version.
2 after flashing rom i cannot make or receive voice calls
3 i went into a samsung store they said it was an unlocked SM-G935F and had 'XEU' firmware.
4 they kindly reflashed this for me but it didn't solve the problem
5 I have just tried downloading and reflashing again with the XEU firmware. But I still cannot make or receive calls
one weird thing is that the odd text seems to get through to me
Anyone got any ideas on how to unbrick my phone? Very much appreciated.
Sorry, one extra piece of information. I am on '3'. But if I put an O2 sim in the phone it can make and receive calls. But before my first flashing it worked fine with '3'.
It seems I must have flashed the wrong firmware but have no idea what was on there. The previous owner used a EE sim in it. But it was bought not locked to a network - i think. There was no network branding on the phone.
Click to expand...
Click to collapse
Hey, can it boot? If yes then flash a custom rom. Some custom roms have multi csc options. Make sure to enable oem unlock before doing anything and flash modded twrp and take full backup
Sent from my Galaxy S7 Edge using XDA Labs

gupt07ash said:
Hey, can it boot? If yes then flash a custom rom. Some custom roms have multi csc options. Make sure to enable oem unlock before doing anything and flash modded twrp and take full backup
Sent from my Galaxy S7 Edge using XDA Labs
Click to expand...
Click to collapse
Yes it boots and works ok with an O2 sim but not with my '3' sim. Everything else works fine.
Thanks for your reply. But I don't want to use a custom rom. I want to get my stock rom working.
Does anyone know of a solution to this problem please?
Would it be possible to flash the wrong CSC - for example and American CSC - I am in Europe and on European CSC?
Many thanks
Bob

bobbaker1970 said:
Yes it boots and works ok with an O2 sim but not with my '3' sim. Everything else works fine.
Thanks for your reply. But I don't want to use a custom rom. I want to get my stock rom working.
Does anyone know of a solution to this problem please?
Would it be possible to flash the wrong CSC - for example and American CSC - I am in Europe and on European CSC?
Many thanks
Bob
Click to expand...
Click to collapse
Take a look at my thread.
https://forum.xda-developers.com/s7-edge/how-to/g935fd-twrp-backup-t3917485
Sent from my Galaxy S7 Edge using XDA Labs
---------- Post added at 05:06 PM ---------- Previous post was at 05:05 PM ----------
Yes you can install multi csc via root explorer.
Sent from my Galaxy S7 Edge using XDA Labs

gupt07ash said:
Take a look at my thread.
https://forum.xda-developers.com/s7-edge/how-to/g935fd-twrp-backup-t3917485
Sent from my Galaxy S7 Edge using XDA Labs
---------- Post added at 05:06 PM ---------- Previous post was at 05:05 PM ----------
Yes you can install multi csc via root explorer.
Sent from my Galaxy S7 Edge using XDA Labs
Click to expand...
Click to collapse
I'm really not sure why you suggest everyone to install TWRP? People with less knowledge shoudn't know that flashing twrp will break the knox and they won't be able to use secure folder etc. Please put more information with such suggestions.

rroyy said:
I'm really not sure why you suggest everyone to install TWRP? People with less knowledge shoudn't know that flashing twrp will break the knox and they won't be able to use secure folder etc. Please put more information with such suggestions.
Click to expand...
Click to collapse
They're probably already tripping Knox if they're here and seeking help.
I'm replying coz nobody else did and it's merely a suggestion.
Twrp can save a bricked device and it's important to make backups before experimenting. They're not kids ffs
Sent from my Galaxy S7 Edge using XDA Labs
---------- Post added at 05:53 PM ---------- Previous post was at 05:51 PM ----------
Since this guy quoted me, he'll provide you whatever csc you need
Goodbye
Sent from my Galaxy S7 Edge using XDA Labs

gupt07ash said:
They're probably already tripping Knox if they're here and seeking help.
I'm replying coz nobody else did and it's merely a suggestion.
Twrp can save a bricked device and it's important to make backups before experimenting. They're not kids ffs
Sent from my Galaxy S7 Edge using XDA Labs
---------- Post added at 05:53 PM ---------- Previous post was at 05:51 PM ----------
Since this guy quoted me, he'll provide you whatever csc you need
Goodbye
Sent from my Galaxy S7 Edge using XDA Labs
Click to expand...
Click to collapse
I still believe you've to warn them.
---------- Post added at 19:56 ---------- Previous post was at 19:54 ----------
bobbaker1970 said:
Sorry, but I am a newbie so forgive me if this is stupid!
1 I had a slight battery problem so decided (why??) to flash the rom on my unlocked S7 edge. I used the 'BTU' version.
2 after flashing rom i cannot make or receive voice calls
3 i went into a samsung store they said it was an unlocked SM-G935F and had 'XEU' firmware.
4 they kindly reflashed this for me but it didn't solve the problem
5 I have just tried downloading and reflashing again with the XEU firmware. But I still cannot make or receive calls
one weird thing is that the odd text seems to get through to me
Anyone got any ideas on how to unbrick my phone? Very much appreciated.
Sorry, one extra piece of information. I am on '3'. But if I put an O2 sim in the phone it can make and receive calls. But before my first flashing it worked fine with '3'.
It seems I must have flashed the wrong firmware but have no idea what was on there. The previous owner used a EE sim in it. But it was bought not locked to a network - i think. There was no network branding on the phone.
Click to expand...
Click to collapse
Try flashing XEU rom via odin but use CSC file instead of Home CSC you'll loose your data so don't forget to take a backup via Smart Switch.
one more suggestion flash older firmware (again 8.0) from XEU later connect your device to pc and update to latest via smart switch.

rroyy said:
I still believe you've to warn them.
---------- Post added at 19:56 ---------- Previous post was at 19:54 ----------
Try flashing XEU rom via odin but use CSC file instead of Home CSC you'll loose your data so don't forget to take a backup via Smart Switch.
one more suggestion flash older firmware (again 8.0) from XEU later connect your device to pc and update to latest via smart switch.
Click to expand...
Click to collapse
Many thanks that sounds like an interesting idea.
But.............. if I go back to the first version of 8.0 (oreo) will it wreck Knox or anything else to do with security. I want to still be able to use samsung pay for example.
Also, i was told by a samsung shop person that you can't downgrade because there are systems in place to stop you. Though i dont know if he meant from 8 to 7 or from recent 8 to older 8.
I am planning to flash this:
https://www.sammobile.com/firmwares/galaxy-s7-edge/SM-G935F/XEU/download/G935FXXU2EREM/222561/
due to fact that its original software was xeu. Is that ok?
Your help was very valuable thank you
Bob

bobbaker1970 said:
Many thanks that sounds like an interesting idea.
But.............. if I go back to the first version of 8.0 (oreo) will it wreck Knox or anything else to do with security. I want to still be able to use samsung pay for example.
Also, i was told by a samsung shop person that you can't downgrade because there are systems in place to stop you. Though i dont know if he meant from 8 to 7 or from recent 8 to older 8.
I am planning to flash this:
https://www.sammobile.com/firmwares/galaxy-s7-edge/SM-G935F/XEU/download/G935FXXU2EREM/222561/
due to fact that its original software was xeu. Is that ok?
Your help was very valuable thank you
Bob
Click to expand...
Click to collapse
you wont break the knox and you don't have to go that much back just download 2 version back from january or february will be enough.
you can't downgrade your bootloader or turn back to android 7.0 that's what they mean. Smart Switch shpuld fix the problem for you.

rroyy said:
you wont break the knox and you don't have to go that much back just download 2 version back from january or february will be enough.
you can't downgrade your bootloader or turn back to android 7.0 that's what they mean. Smart Switch shpuld fix the problem for you.
Click to expand...
Click to collapse
Many many thanks again Rroyy
Forgive me but I am new to this.
So are you saying:
1. Download:
https://www.sammobile.com/firmwares/galaxy-s7-edge/SM-G935F/XEU/download/G935FXXS3ERLF/251612/
That's the last but one from January 19.
Which has: PDA G935FXXS3ERLF
CSC G935FXEU3ERKF
2. Can I just flash that. Or must I remove the bootloader from that package and put in the current bootloader?
And I was presuming I would do all of that with Odin??? Am I wrong. Is there a way of doing it with smartswitch? (I have reset the phone and got rid of all of my information already)
update: tried flashing last rom , that didnt work. the one before wouldn't flash - i notice it has numbers'3' in the various codes rather than 4.
still not solved
Many thanks again
Bob

bobbaker1970 said:
Many many thanks again Rroyy
Forgive me but I am new to this.
So are you saying:
1. Download:
https://www.sammobile.com/firmwares/galaxy-s7-edge/SM-G935F/XEU/download/G935FXXS3ERLF/251612/
That's the last but one from January 19.
Which has: PDA G935FXXS3ERLF
CSC G935FXEU3ERKF
2. Can I just flash that. Or must I remove the bootloader from that package and put in the current bootloader?
And I was presuming I would do all of that with Odin??? Am I wrong. Is there a way of doing it with smartswitch? (I have reset the phone and got rid of all of my information already)
Many thanks again
Bob
Click to expand...
Click to collapse
Flash the os via odin (select CSC file not home CSC) Untick re-partition option on odin. (Instructions)
Select all files except home_CSC from odin. BL-CP-AP and CSC
After your device boots, skip settings till you see the home page. Connect your device to pc and launch smartswitch (It could ask you to install smart switch to your device) and update latest firmware over smart switch.

rroyy said:
Flash the os via odin (select CSC file not home CSC) Untick re-partition option on odin. (Instructions)
Select all files except home_CSC from odin. BL-CP-AP and CSC
After your device boots, skip settings till you see the home page. Connect your device to pc and launch smartswitch (It could ask you to install smart switch to your device) and update latest firmware over smart switch.
Click to expand...
Click to collapse
Many thanks again Rroyy
Unforunately, I am getting nowhere. And cannot get my phone to work.
Odin will not let me flash any files which have '3' rather than 4 in them. For example I can flash
BL_G935FXXS4ESC1_CL14843133_QB22373776_REV00_user_low_ship.tar.md5
Because it is FXXS4.... the '4' being the important bit
But I cannot flash:
BL_G935FXXU3ERL3_CL14843133_QB20951136_REV00_user_low_ship.tar.md5
because it is FXXU3.... the '3' being the important bit
This seems to reduce me down to the last firmware for both XEU and BTU neither of which enable me to make calls on '3' network like I have done for months before flashing.
Thanks for all of your kind help
It looks like my phone is bricked (
All the best
Bob

bobbaker1970 said:
Many thanks again Rroyy
Unforunately, I am getting nowhere. And cannot get my phone to work.
Odin will not let me flash any files which have '3' rather than 4 in them. For example I can flash
BL_G935FXXS4ESC1_CL14843133_QB22373776_REV00_user_low_ship.tar.md5
Because it is FXXS4.... the '4' being the important bit
But I cannot flash:
BL_G935FXXU3ERL3_CL14843133_QB20951136_REV00_user_low_ship.tar.md5
because it is FXXU3.... the '3' being the important bit
This seems to reduce me down to the last firmware for both XEU and BTU neither of which enable me to make calls on '3' network like I have done for months before flashing.
Thanks for all of your kind help
It looks like my phone is bricked (
All the best
Bob
Click to expand...
Click to collapse
Bob, can you flash latest XEU? We are going to get new security patch update in few weeks. April security patch not yet release. If you can flash latest XEU you can update your device to upcoming update via Smart Switch.

Still bricked: cannot make calls
Thanks for help everyone.
I thought I would give you my conclusions so far in case they are helpful to anyone.
1 My phone was working perfectly for SMS, phone calls and data on the '3' network.
2 Because the battery life didn't seem good I decided to flash it
3 It turns out my phone was initially sold with 'XEU' firmware. But I didn't know that and so I flashed it with 'BTU' firmware - the latest edition.
4 As a result the phone could not make or receive calls on the '3' network. But... it can make and receive calls on the 'O2' network. However, '3' is my contract network and so I want to stay with that. Also, I think the companies are running down 2G transmissions ?? so eventually I may have problems with O2 .
FYI it seems the problem may be that the phone is not sending or receiving certain frequencies as otherwise why would it work ok on O2 but not 3??
**********Tried to resolve by:
5 New sim card
6 Factory reset
7 Clear partition
8 Flashing, again. I tried:
a latest XEU
b latest BTU
c previous XEU
d previous BTU
e previous XEU but with the modem file from EE
f previous XEU but with the modem file from 3
g previous XEU again but then did an over the air update to current XEU
Non of them worked.
*****Conclusion
My phone still will not make or receive calls on the 3 network - it won't register on the network (yes I have tried resetting, selecting network etc etc). It sometimes works with text messages though?? And 4G sometimes works. Otherwise the phone works perfectly, just not for phone calls.
Again on the O2 network all seems to work and I can make and receive calls.
So, to for me, it is bricked in that I can't use it as a phone.
I find it completely inexplicable that I can't get it to work on 3 for calls. There doesn't seem any logic to it.
But thanks everyone for all of your kind help. If anyone has any more suggestions I am willing to try them. Especially if they know how to turn on the relevant frequencies on the phone.
Bit of info: Samsung kindly ran a test to check the reception and transmission of signals. But the test wouldn't even start because it couldn't test the first frequency (apparently it should test lots).

RRoyy
Many thanks again for your reply. You've been very kind with your time.
Yes I can flash the current XEU but it still doesn't work. And I flashed the previous XEU and then did an update using over the air from the phone. But still it doesn't work.
Very best wishes
Bob

Weird
I put an EE sim into my phone (the previous owner had bought it unlocked but used it with an EE contract).
Then I put my '3' sim into my phone. And............ I was able to make one!! call.
After that it stopped working.
That was on XEU where I had downloaded the previous version and let it update over the air.
Does this in any way help diagnose the problem??
Thanks again.

bobbaker1970 said:
RRoyy
Many thanks again for your reply. You've been very kind with your time.
Yes I can flash the current XEU but it still doesn't work. And I flashed the previous XEU and then did an update using over the air from the phone. But still it doesn't work.
Very best wishes
Bob
Click to expand...
Click to collapse
Flash that version and update via smart switch please not ota. I've XEU device and I flashed btu many times to my device never had any problem. Than I update my device to TUR to get updates released bu Turkish operators.
There must be something about installization process that's why I'm asking you to update your device over pc via Smart Switch.

Thank you again RRoyy
I shall do as you suggest.
I think you are saying:
1 Flash previous version of XEU???
2 Then update to current version of XEU using 'smart switch'
3 Should I flash with my '3' sim card in the phone. Or not?
Is that correct?
Also, a small point but I didn't know smartswitch could update firmware. I have never used it. But shall give it a try.
If you could please tell me if the above is correct before I do it I would be most grateful. And thank you again for your time.
Side note: Today I tried an EE sim. It does work, but only on 2G. Not on 3G or auto switch. So, it may be the case that the original flashing of BTU that I did first of all somehow made the phone only 2G? Is that possible?
++Update. Smartswitch spent ages trying to update but failed at the last bit. IT downloaded the software but failed on installation. I have no idea why.
Any suggestions??
Best wishes
Bob

Hello again. So I still haven't had any luck.
I flashed the BTU before the current version. But then the smartswitch wouldn't update it to the current version. It claimed it was already current. It wouldn't update over the air either.
I then flashed the XEU before the current version and I DID manage to get smartswitch to update it to the current version. But '3' sim still not working.
It seems that the problem revolves around certain frequencies that do/don't work on my phone. I suppose it could be a hardware issue though that is unlikely seeing as it happened immediately after I flashed the phone for the first time.
This gives rise to two quesions:
1 Does flashing the firmware get rid of EVERYTHING on the phone. Or does it leave residual bits of information that aren't overwritten?
2 Perhaps the problem is the 'CP' software which seems to be the same for all the options I can flash.
3 If I could flash with firmware from another country with a different CP file perhaps that might push the phone into action.
4 Is there a way to check what frequencies my phone can and cannot receive transmit. I don't mean the specifications. I mean the actual received/transmitted frequencies/bands.
Many thanks again.
Finally, apologies for posting this without logging in but there is a problem with trying to login to the forum on this Chromebook. The space for name and password is not visible. Works ok in windows 10 but not on my chromebook.
Best wishes
Bob

1) Yes I believe the efs of the phone is not wiped when flashing software. Everything else is wiped.
2) You could try another country rom. Just make sure the model number is the same. Changing the CP could work as CP is the modem file.

N986U Android 11 Firmware works on Rogers (Canadian) N986W

Just flashed the latest version of Android 11, and it works flawlessly. Just have to install a Rogers CSC to it and you'll get 5G aswell.
My phone says it is now a N986U device instead of N986W.
If you have any questions, post them.

1212121212121212 said:
Just flashed the latest version of Android 11, and it works flawlessly. Just have to install a Rogers CSC to it and you'll get 5G aswell.
My phone says it is now a N986U device instead of N986W.
If you have any questions, post them.
Click to expand...
Click to collapse
How?

The 986W version isn't going to be released until Jan 5th so you can download the 986U version from this site and install it with ODIN. Don't do this if you don't understand how to use tools like this, especially if you like your phone...

1212121212121212 said:
Just flashed the latest version of Android 11, and it works flawlessly. Just have to install a Rogers CSC to it and you'll get 5G aswell.
My phone says it is now a N986U device instead of N986W.
If you have any questions, post them.
Click to expand...
Click to collapse
Did you have to change your CSC? Did you pick HOME for your CSC during the download? I noticed the *#272*IMEI# method to change your CSC doesn't work on the NOTE 20. Regardless, I see my phone still sees 5G. CSC right now is OYN??

Sword Fish said:
Did you have to change your CSC? Did you pick HOME for your CSC during the download? I noticed the *#272*IMEI# method to change your CSC doesn't work on the NOTE 20. Regardless, I see my phone still sees 5G. CSC right now is OYN??
Click to expand...
Click to collapse
Sorry for the late reply. I found the Rogers CSC by googling "Rogers Note 20 ultra Rogers Stock firmware"
I downloaded the whole 6gb file, but only used the Home_CSC from Rogers and used it with ODIN after I got the ATT update.
Have had no issues at all, and One UI 3.0 is a blessing.

Sword Fish said:
Did you have to change your CSC? Did you pick HOME for your CSC during the download? I noticed the *#272*IMEI# method to change your CSC doesn't work on the NOTE 20. Regardless, I see my phone still sees 5G. CSC right now is OYN??
Click to expand...
Click to collapse
Csc changer code:
Dial *#*#27262826#*#* on "Google dialer"

1212121212121212 said:
Just flashed the latest version of Android 11, and it works flawlessly. Just have to install a Rogers CSC to it and you'll get 5G aswell.
My phone says it is now a N986U device instead of N986W.
If you have any questions, post them.
Click to expand...
Click to collapse
Could you help me out, I'm trying to unlock my bootloader which is a n986w variant. From what I understand, I gotta download the n986u firmware and Roger's csc and loadilthem in the modified Odin?

Lowkeey said:
Could you help me out, I'm trying to unlock my bootloader which is a n986w variant. From what I understand, I gotta download the n986u firmware and Roger's csc and loadilthem in the modified Odin?
Click to expand...
Click to collapse
Did you get it working? I have a Rogers sm-n986W but I moved to the states and now Verizon is saying my imei doesnt support 5g so now I think I need to Flash over to the US firmware... Can I just get the sm-n986u1 firmware and flash it using Odin?