Missing service mode after flashing G986U SW at G986U1 device - Samsung Galaxy S20 / S20+ / S20 Ultra Questions &

Hi,
the *#2263# service mode is missing after flashing G986USQU1BTHD SW at G986U1 device. I just wanted to check if this version of SW enables 5G SA mode corresponding to BTHD changelog.
Someone's got similar problem? Maybe service code changed after upgrading?

Hiktoo said:
Hi,
the *#2263# service mode is missing after flashing G986USQU1BTHD SW at G986U1 device. I just wanted to check if this version of SW enables 5G SA mode corresponding to BTHD changelog.
Someone's got similar problem? Maybe service code changed after upgrading?
Click to expand...
Click to collapse
service mode is definitely not missing.. each carrier csc has their own keystrings so some work and some dont depending on what csc/firmware ur using

Related

SECRET CODES - unlocked #Network selection solved

First of all, i think this section belongs to better group than general thats why i think that it should be in apps themes section..
as it serves a better purpose like of apps in knowing about our phone...
So here i present you the collection of codes that work on almost all galaxy devices - importantly GRAND
credit- well i am just a geek and have found this through google
The secret codes can be used for several purposes, such getting the info of your device, resetting call counter, manage connectivity and radio, getting battery data, software and hardware version, setting up touchscreen, testing some features, changing CSC codes, and lots more
1.THE BIG QUESTION - What was the date on which my phone was manufactured ?
-Open your phone’s dialer and type the following code: *#197328640#.
-In case it does not work for you, try this one: *#*#197328640#*#* . (WELL I DIDNT GET SUCCESS IN IT :laugh
-This will open the Service Mode menu on your Galaxy Grand.
-Select the option N. 2, that is “Version Info”.
- On the next screen, select ‘HW Version” (here HW means hardware).
-Now you will see another set of options on the next screen. Now tap on “Read CAL Date”, and bingo! You can now see the date of manufacture of your phone.
In my case, it was 20130128 i.e 28th january 2013 .
Other Secret Codes for Samsung Galaxy Devices:
*#06# Show IMEI Number
*#2222# HW Version
*#34971539# Camera Firmware settings
*#9900# Sysdump (Logfiles etc.)
*#0228# Battery diagnostics
*#7353# Function testing
*#197328640# Service Mode Menu
*2767*3855# Factory Reset (not tested)
*#34971539# Camera Firmware Menu
*#197328640# – Service mode for testing
**05***# – Execute from Emergency dial screen to unlock PUK code
*#1234# View SW Version PDA, CSC, MODEM
*#03# -- NAND Flash S/N
*#350# -- Reboot
*#0011# -- ServiceMode [1]
*#0228# -- Battery status
*#0283# -- Audio packet loopback test
*#0782# -- Real Time Clock Test
*#0842# -- Vibration Test
*#2663# -- Touchscreen FW and version
*#7284# -- Phone Utility (USB Settings) // WASNT ABLE TO UNDERSTAND-if u can please advise.
*#7353# -- Self Test (Menu of 12 tests to use)
*#7594# -- Factory mode >>>>Enable shutdown on long press
*#8888# -- Service Mode (Read FTA hw version)
*#232338# -- WLAN MAC address & PS mode
*#22558463# -- Reset Total Call Time
*#12580*369# -- Main Version (AP, CP, CSC, RF cal, HW Rev) (similar to 9999)
##NETWORK SELECTING ON NON-INDIAN FIRMWARES## :cyclops:
well this work on indian firmware too-- i havent tried though
1.dial *#197328640#
2.now the option no. 5 &6 are for band selection
option no.5- is for sim1
option no-6- is for sim 2
3. now choose the one in which u want to make 3g only... in my case it was sim 2.. so i chose option no.6
4. newt select wcdma band
5. now select wcdma all band
AND YOU ARE DONE
Cool...
Nyc wrk bro..!!
Stay blessed..!!
Sent from my GT-I9082 using xda premium
Great information dude
read this article
u will come to know what is phoneutil i.e. *#7284#
http://galaxys4root.com/galaxy-s4-t...aws-bands-on-att-galaxy-s4-sgh-i337sgh-i337m/
TotalCall Time
Hy Guys
Thanks for help.
I need a information if is possible:
I need to reset the TotalCallTime on some devices from Samsung. I try *#22558463# and i get de time call for ex: 2h0m0s, but how to reset this time call?
This is because i send devices to warranty reseller and if the device have more than 1h they don´t accept...
Best Reguards
Aj.GaLaxY aCE said:
First of all, i think this section belongs to better group than general thats why i think that it should be in apps themes section..
as it serves a better purpose like of apps in knowing about our phone...
So here i present you the collection of codes that work on almost all galaxy devices - importantly GRAND
credit- well i am just a geek and have found this through google
The secret codes can be used for several purposes, such getting the info of your device, resetting call counter, manage connectivity and radio, getting battery data, software and hardware version, setting up touchscreen, testing some features, changing CSC codes, and lots more
1.THE BIG QUESTION - What was the date on which my phone was manufactured ?
-Open your phone’s dialer and type the following code: *#197328640#.
-In case it does not work for you, try this one: *#*#197328640#*#* . (WELL I DIDNT GET SUCCESS IN IT :laugh
-This will open the Service Mode menu on your Galaxy Grand.
-Select the option N. 2, that is “Version Info”.
- On the next screen, select ‘HW Version” (here HW means hardware).
-Now you will see another set of options on the next screen. Now tap on “Read CAL Date”, and bingo! You can now see the date of manufacture of your phone.
In my case, it was 20130128 i.e 28th january 2013 .
Other Secret Codes for Samsung Galaxy Devices:
*#06# Show IMEI Number
*#2222# HW Version
*#34971539# Camera Firmware settings
*#9900# Sysdump (Logfiles etc.)
*#0228# Battery diagnostics
*#7353# Function testing
*#197328640# Service Mode Menu
*2767*3855# Factory Reset (not tested)
*#34971539# Camera Firmware Menu
*#197328640# – Service mode for testing
**05***# – Execute from Emergency dial screen to unlock PUK code
*#1234# View SW Version PDA, CSC, MODEM
*#03# -- NAND Flash S/N
*#350# -- Reboot
*#0011# -- ServiceMode [1]
*#0228# -- Battery status
*#0283# -- Audio packet loopback test
*#0782# -- Real Time Clock Test
*#0842# -- Vibration Test
*#2663# -- Touchscreen FW and version
*#7284# -- Phone Utility (USB Settings) // WASNT ABLE TO UNDERSTAND-if u can please advise.
*#7353# -- Self Test (Menu of 12 tests to use)
*#7594# -- Factory mode >>>>Enable shutdown on long press
*#8888# -- Service Mode (Read FTA hw version)
*#232338# -- WLAN MAC address & PS mode
*#22558463# -- Reset Total Call Time
*#12580*369# -- Main Version (AP, CP, CSC, RF cal, HW Rev) (similar to 9999)
##NETWORK SELECTING ON NON-INDIAN FIRMWARES## :cyclops:
well this work on indian firmware too-- i havent tried though
1.dial *#197328640#
2.now the option no. 5 &6 are for band selection
option no.5- is for sim1
option no-6- is for sim 2
3. now choose the one in which u want to make 3g only... in my case it was sim 2.. so i chose option no.6
4. newt select wcdma band
5. now select wcdma all band
AND YOU ARE DONE
Click to expand...
Click to collapse
hey,could you please tell me why i receive "mobile network not available" while trying a code like *#0808#? s4mini i9195
Aj.GaLaxY aCE said:
First of all, i think this section belongs to better group than general thats why i think that it should be in apps themes section..
as it serves a better purpose like of apps in knowing about our phone...
So here i present you the collection of codes that work on almost all galaxy devices - importantly GRAND
credit- well i am just a geek and have found this through google
The secret codes can be used for several purposes, such getting the info of your device, resetting call counter, manage connectivity and radio, getting battery data, software and hardware version, setting up touchscreen, testing some features, changing CSC codes, and lots more
1.THE BIG QUESTION - What was the date on which my phone was manufactured ?
-Open your phone’s dialer and type the following code: *#197328640#.
-In case it does not work for you, try this one: *#*#197328640#*#* . (WELL I DIDNT GET SUCCESS IN IT :laugh
-This will open the Service Mode menu on your Galaxy Grand.
-Select the option N. 2, that is “Version Info”.
- On the next screen, select ‘HW Version” (here HW means hardware).
-Now you will see another set of options on the next screen. Now tap on “Read CAL Date”, and bingo! You can now see the date of manufacture of your phone.
In my case, it was 20130128 i.e 28th january 2013 .
Other Secret Codes for Samsung Galaxy Devices:
*#06# Show IMEI Number
*#2222# HW Version
*#34971539# Camera Firmware settings
*#9900# Sysdump (Logfiles etc.)
*#0228# Battery diagnostics
*#7353# Function testing
*#197328640# Service Mode Menu
*2767*3855# Factory Reset (not tested)
*#34971539# Camera Firmware Menu
*#197328640# – Service mode for testing
**05***# – Execute from Emergency dial screen to unlock PUK code
*#1234# View SW Version PDA, CSC, MODEM
*#03# -- NAND Flash S/N
*#350# -- Reboot
*#0011# -- ServiceMode [1]
*#0228# -- Battery status
*#0283# -- Audio packet loopback test
*#0782# -- Real Time Clock Test
*#0842# -- Vibration Test
*#2663# -- Touchscreen FW and version
*#7284# -- Phone Utility (USB Settings) // WASNT ABLE TO UNDERSTAND-if u can please advise.
*#7353# -- Self Test (Menu of 12 tests to use)
*#7594# -- Factory mode >>>>Enable shutdown on long press
*#8888# -- Service Mode (Read FTA hw version)
*#232338# -- WLAN MAC address & PS mode
*#22558463# -- Reset Total Call Time
*#12580*369# -- Main Version (AP, CP, CSC, RF cal, HW Rev) (similar to 9999)
##NETWORK SELECTING ON NON-INDIAN FIRMWARES## :cyclops:
well this work on indian firmware too-- i havent tried though
1.dial *#197328640#
2.now the option no. 5 &6 are for band selection
option no.5- is for sim1
option no-6- is for sim 2
3. now choose the one in which u want to make 3g only... in my case it was sim 2.. so i chose option no.6
4. newt select wcdma band
5. now select wcdma all band
AND YOU ARE DONE
Click to expand...
Click to collapse
hello,
there is some way in order to add/enable the LTE band 4 to my S5 Duos sm-g900fd ?
thanks
thnx
I want to unlock samsung grand prime which is not asking for any network code but is network locked. It is asking device unlock app to unlock the phone.
*#2263# is for the Samsung network select screen.
i bought a samsung j1ace that was network blocked by the service provider becaue the previous owner didnt pay his mobile contract. How do i unblock this phone, it wont read sim cards. but works on wireless, not for calling though
Plz help me the code *#7284# not working i can not use the code on my Samsung j1 lte
plz give me engineering mode code for samsung galaxy grand max 7202.
because i change my network for 4g jio sim.
plz give me engineering mode code.
---------- Post added at 12:20 PM ---------- Previous post was at 11:36 AM ----------
*#197328640# & *#*#197328640#*#*
i will try this code but its not work in my grand max phone plz give better suggestion for my phone.
how to run indian sim in samsung gt 19082 reply fast
Sim Unlock
Help please, how can i unlock sim my galaxy grand duos?
But how to make sim 1 3g again
zipikiki said:
Hy Guys
Thanks for help.
I need a information if is possible:
I need to reset the TotalCallTime on some devices from Samsung. I try *#22558463# and i get de time call for ex: 2h0m0s, but how to reset this time call?
This is because i send devices to warranty reseller and if the device have more than 1h they don´t accept...
Best Reguards
Click to expand...
Click to collapse
There used to be a way earlier, but somehow it does not work anymore. Though I have forgotten it too.
Dimmh said:
hey,could you please tell me why i receive "mobile network not available" while trying a code like *#0808#? s4mini i9195
Click to expand...
Click to collapse
Then there is some issue in your network SIM. I mean see if your SIM is activated, maybe it is not recognising in the S4 Mini.
thepinkpanter said:
hello,
there is some way in order to add/enable the LTE band 4 to my S5 Duos sm-g900fd ?
thanks
Click to expand...
Click to collapse
No. S5 Duos does not support LTE.
syed_21 said:
I want to unlock samsung grand prime which is not asking for any network code but is network locked. It is asking device unlock app to unlock the phone.
Click to expand...
Click to collapse
EH? Unable to get what you are asking for here!
skumdog said:
*#2263# is for the Samsung network select screen.
Click to expand...
Click to collapse
Yes!
JustROx said:
i bought a samsung j1ace that was network blocked by the service provider becaue the previous owner didnt pay his mobile contract. How do i unblock this phone, it wont read sim cards. but works on wireless, not for calling though
Click to expand...
Click to collapse
Root and install a custom ROM. Or root and remove the .bin file for the network code blocker.
haseeb12345678910 said:
Plz help me the code *#7284# not working i can not use the code on my Samsung j1 lte
Click to expand...
Click to collapse
It is not for J1.
loveacharya said:
plz give me engineering mode code for samsung galaxy grand max 7202.
because i change my network for 4g jio sim.
plz give me engineering mode code.
---------- Post added at 12:20 PM ---------- Previous post was at 11:36 AM ----------
*#197328640# & *#*#197328640#*#*
i will try this code but its not work in my grand max phone plz give better suggestion for my phone.
Click to expand...
Click to collapse
I too searched a lot for it, unable to locate it mate.
navin239780 said:
how to run indian sim in samsung gt 19082 reply fast
Click to expand...
Click to collapse
Normally, the same way you would so in any other phone.
lelouch0131 said:
Help please, how can i unlock sim my galaxy grand duos?
Click to expand...
Click to collapse
Root it, the best way. Install custom rom then.
Namanyoyo said:
But how to make sim 1 3g again
Click to expand...
Click to collapse
Settings > SIM & Mobile > Sim 1 > Network selection > Choose wcdma/gsm mode.
Hi. If ANYONE can plz help me sim unlock my s5 neo email me plz asap [email protected]
Engrining cood for j5 6 phone
Hello gays I have Samsung j56 16gb Mobil how I can encaraz volume with cood can you plz send me engrining cood for Samsung j5 6
Help me, my samsung galaxy grand prime, gives me a massage saying not registered on the network when i dail a number. But when i try 2 register it on the network it says network not available

Which part of the firmware influences cellular signal quality?

is it the CP or the CSC? I have a korean 'N' S9 but I live in a country that gets the International 'F' devices, and my data network speed is garbage compared to the local samsung devices, and I was wondering whether this was a firmware issue or a hardware issue (as in the components in the korean version are somewhat different).
Coomer91 said:
is it the CP or the CSC? I have a korean 'N' S9 but I live in a country that gets the International 'F' devices, and my data network speed is garbage compared to the local samsung devices, and I was wondering whether this was a firmware issue or a hardware issue (as in the components in the korean version are somewhat different).
Click to expand...
Click to collapse
radio firmware and band selection found not within firmware, rather its located in the service menu. *#2263#
BEWARE tho. There are things in that menu that if you eff them up, theyre no un-effing them up
Hello I have a similar issue :
I bought a SM-G960U to use in a country where we normaly use the 960F version..... The caracteristics of both phone are similar for GSM/UMTS/LTE and should be compatible, but my G960U has a very poor signal reception, and a very bad speed for LTE/4G
Is It possible to flash the G960U with a 960F ROM ? Will It improve something ?
yan74s said:
Hello I have a similar issue :
I bought a SM-G960U to use in a country where we normaly use the 960F version..... The caracteristics of both phone are similar for GSM/UMTS/LTE and should be compatible, but my G960U has a very poor signal reception, and a very bad speed for LTE/4G
Is It possible to flash the G960U with a 960F ROM ? Will It improve something ?
Click to expand...
Click to collapse
well, technically..... its possible, but for the sake of conversation, no. You cant flash a F ROM on a U device. The issue youre having is due to the LTE bands enabled on the phone. The only way to change those is with the service menu, which i do not know how to navigate on this phone. To get to the service menu, go to the dialer and enter *#2263# and itll bring up the service menu which is only navigable with the keypad. It should show you a menu with corresponding numbers, but DO NOT MESS AROUND IN THERE!!!
You have been warned, and im not kidding. If you mess stuff in that menu, it could be permanent and could brick your phone
OK, thanks for your advice .....
*#2263# doesn't work for me, but with *#0011# I can access to the "service mode" ... Is it the same than "service menu" you were talking about ?
I've found some informations here (sorry it's in french, and the video in spanish)
https://lafibre.info/4g/forcer-samsung-freq/
The problem is that to accesds the menu : the step 3 doesn'nt work (type Q and after 0000 ) the menu doesn't open in my phone
yan74s said:
OK, thanks for your advice .....
*#2263# doesn't work for me, but with *#0011# I can access to the "service mode" ... Is it the same than "service menu" you were talking about ?
I've found some informations here (sorry it's in french, and the video in spanish)
https://lafibre.info/4g/forcer-samsung-freq/
The problem is that to accesds the menu : the step 3 doesn'nt work (type Q and after 0000 ) the menu doesn't open in my phone
Click to expand...
Click to collapse
here, there are several *# code combinations that folks use come on over to this thread. Different phone, i know, but its just the + of the same device

Carrier firmware

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

S20+ AT&T unable to update software

Hi All,
I'm new in this firmware things. I'm from Singapore and has been using S20 Exynos, but due to the extreme heat, bad battery life,etc. I've decided to import S20+ Snapdragon from AT&T, according to the Service provider SW ver information, it's showing as SAOMC_SM-G986U-OYN_ATT_QQ_0023 (I believe this means the set are unlocked).
With that said, I noticed that the software is outdated and the security patch level is on February 1,2020. when I referring to the AT&T website, It's showing as the latest software is QP1A.190711.020.G986USQU1ATE6 (June update) and mine still on QP1A.190711.020..G986USQU1ATAW (February). My CSC is G986UOYN1ATAW.
My question now is, whenever I tried to hit the software update, it's keep telling me that my software is up to date. Is there's a reason why it's wont detect the update? If it's because I'm in Singapore not US, then there's no choice that I need to flash using the firmware from Sammobile. The problem is which one that I need to download as AT&T carrier is not listed there. There's only T-mobile, Sprint, Unknown, USA. Please help.
https://www.sammobile.com/samsung/galaxy-s20-plus/firmware/#SM-G986U
Try here
https://samfw.com/firmware/SM-G986U
Hi Detection, thank you for the firmware list. but based from the list, how do I know which one that is compatible with my device?
Raigar said:
Hi Detection, thank you for the firmware list. but based from the list, how do I know which one that is compatible with my device?
Click to expand...
Click to collapse
All of them for that model S20, you just need to match the model, any region will work fine
Hi,
Are you sure I can flash Verizon firmware into AT&T device? CSC may to match?
Thks

Unlock ATT Note10+ 5G update outside USA (SM-N976U)

Hello,
I am new to the unlocking stuff.
I just bought a used ATT Note10+ 5G in Malaysia, model SM-N976U
However the security patch was stuck in May 2020. It could not be updated over the internet or Smart Switch PC.
It says it is the latest s/w (the latest should be July 2020)
I checked Sammobile and discovered 2 firmware updates : USA(TMK) and USA (T-mobile)(TMB)
(tried to include sammobile link here but was disallowed due to new user status)
Which firmware is suitable for my phone?
Is there a way to unlock ATT and receive the normal monthly security update over the internet automatically?
(i saw Odin in youtube and have basic idea how to flash it)
Appreciate any advice. Thank you
SCitta said:
Hello,
I am new to the unlocking stuff.
I just bought a used ATT Note10+ 5G in Malaysia, model SM-N976U
However the security patch was stuck in May 2020. It could not be updated over the internet or Smart Switch PC.
It says it is the latest s/w (the latest should be July 2020)
I checked Sammobile and discovered 2 firmware updates : USA(TMK) and USA (T-mobile)(TMB)
(tried to include sammobile link here but was disallowed due to new user status)
Which firmware is suitable for my phone?
Is there a way to unlock ATT and receive the normal monthly security update over the internet automatically?
(i saw Odin in youtube and have basic idea how to flash it)
Appreciate any advice. Thank you
Click to expand...
Click to collapse
A thread already exists with the answers to your questions.
https://forum.xda-developers.com/galaxy-note-10+/how-to/att-note-10-5g-n976u-firmware-files-t4059721
No unbranded firmware version exists as of yet.. so you will have to flash a carrier specific firmware.
https://forum.xda-developers.com/showpost.php?p=81981925&postcount=3
Thank for for the link provided.
Based on the link information, i can download the 4 base files from sammobile (either TMK or TMB) and add USERDATA ATT N976USQS3BTF4 to flash it.
Is that correct?
I could find USERDATA ATT N976USQS3BTF4 in easy-firmware website with a purchase fee.
(editied: My phone Active CSC Code is XAA, CSC Country is USA)
SCitta said:
Hello,
I am new to the unlocking stuff.
I just bought a used ATT Note10+ 5G in Malaysia, model SM-N976U
However the security patch was stuck in May 2020. It could not be updated over the internet or Smart Switch PC.
It says it is the latest s/w (the latest should be July 2020)
I checked Sammobile and discovered 2 firmware updates : USA(TMK) and USA (T-mobile)(TMB)
(tried to include sammobile link here but was disallowed due to new user status)
Which firmware is suitable for my phone?
Is there a way to unlock ATT and receive the normal monthly security update over the internet automatically?
(i saw Odin in youtube and have basic idea how to flash it)
Appreciate any advice. Thank you
Click to expand...
Click to collapse
Hi SCitta,
Fellow Malaysian having the same problem as you. But my problem now is that I have Odin and the latest firmware (XAA) but Odin is showing failed to establish connection. How did you do it with yours?
Am using the AT&T version of the Note 10+.
KhairilH said:
Hi SCitta,
Fellow Malaysian having the same problem as you. But my problem now is that I have Odin and the latest firmware (XAA) but Odin is showing failed to establish connection. How did you do it with yours?
Am using the AT&T version of the Note 10+.
Click to expand...
Click to collapse
Never experienced the failed connection before.
Have you installed the SAMSUNG-drivers ? The Samsung Smart Switch PC installation might help to fix the drivers.
Hello everyone I am Malian and I live in Mali I recently bought a n976U locked by at & t since when I was putting a chip from an operator from here I was getting network unlock code So I looked for a way to unlock it for free if possible its like that I stumbled across your forum and read your posts and saw the code * # 272 * Imei # like we could try to change d 'operator with therefore when I put my chip it says "Invalid Sim card inserted" if I try to retype * # 272 * ... # it comes out nothing I'm lost please help me s 'please if possible of course Thank you
#123
Just want to share my experience in this. Bought an ATT N976U from the US and using in Malaysia. Phone came with XAA/XAA/ATT and never received OTA updates.
Downloaded Google phone app and changed CSC to TMB/TMB/ATT using *#*#27262826#*#*
Voila. Received the OTA updates one by one since May2020. Am now on N976USQU5EUC2.
Volte is also working on Celcom.
Did not have to flash firmware. Data not wiped. Everything seemed to be working normal apart from "Tips and Help" in settings crashes every time I click it. Also phone boots with T-Mobile logo now.

Categories

Resources