Database Info

Finally working method for enabling VoLTE on S7 Edge on latest BTU firmware (no root)

Hello Guys. I've been playing around with all available nougat firmwares to get volte working. I succeded using latest BTU firmware and beta 1 files.
I'm not responsible for any issues with phone after using this tutorial. Use at your own risk.
With this configuration Shealth doesn't work. It says device has been compromised. Knox is not tripped but probably the cause is a mix of firmware files from different builds. I am looking for a fix but for now you have to sacrifice Shealth if you want VoLTE working on BTU firmware. Flashing full BTU firmware back is restoring Shealth functionality.
UPDATE - After flashing back DQB3 bootloader VoLTE stays and Shealth start working So flash DQB3 bootloader and DQB1 cp file at the very end to get everything working!!
This tutorial is temporary solution until branded operator firmwares will be released.
So what we need:
Official latest nougat full firmware - DQB3 at the moment
Beta 1 BL, CP, CSC files
Odin
Samfirm
To get VoLTE working follow these steps:
Enable oem unlock so you can use odin to flash firmwares (oem unlock is in developer options - enable them tapping About device/software info/Build number few times).
Flash full latest Nougat BTU firmware - (available on samfirm)
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
After flashing completed, skip all configuration because phone will be factory resetted again when you flash beta files. Now flash Nougat beta BL, CP, CSC which are available here: Beta files
After flashing configure phone as normal (i skipped restore settings in samsung cloud just in case of something overwritten).
Flash back Stock Nougat DQB3 bootloader.
Enjoy working VoLTE on latest BTU firmware
If I helped you, click thanks button

Thanks I'm doing this later.
If I'm already running on DBQ3 do I need to do the first bit?

thanks bro.... turkey s7 edge developers

VoLTE being enabled is in the CSC file only
There is no need to do this double flashing technique.
Stock Nougat BL
Stock Nougat AP
Stock Nougat CP
BETA 1 CSC
One time flash, finished

Galactus said:
VoLTE being enabled is in the CSC file only
There is no need to do this double flashing technique.
Stock Nougat BL
Stock Nougat AP
Stock Nougat CP
BETA 1 CSC
One time flash, finished
Click to expand...
Click to collapse
nope, i tried many times. Only flashing csc doesn't bring me volte. Only when i did what i stated in tutorial volte started working. So looks like if it working in your case doesn't mean it will work for all people. My method will i believe

chrissyyyw said:
Thanks I'm doing this later.
If I'm already running on DBQ3 do I need to do the first bit?
Click to expand...
Click to collapse
No need, flash bl cp csc only. It will reset your phone.

Pichulec said:
nope, i tried many times. Only flashing csc doesn't bring me volte. Only when i did what i stated in tutorial volte started working. So looks like if it working in your case doesn't mean it will work for all people. My method will i believe
Click to expand...
Click to collapse
Strange, flashing Nougat files + BETA 1 CSC once has worked for other people in the EE thread. It is well known that all the code needed to enable VoLTE and WiFi calling sits in the CSC file, hence why most guides suggest you flash all 4 files in ODIN but use the CSC file of your choice for carrier settings. If the user is rooted, simply extracting the CSC folders from the CSC image and dropping it into /system is enough and doesn't require any specific ODIN flashed bootloader or modem file.
Mixing different system image and bootloader files isn't really recommended

Galactus said:
Strange, flashing Nougat files + BETA 1 CSC once has worked for other people in the EE thread. It is well known that all the code needed to enable VoLTE and WiFi calling sits in the CSC file, hence why most guides suggest you flash all 4 files in ODIN but use the CSC file of your choice for carrier settings. If the user is rooted, simply extracting the CSC folders from the CSC image and dropping it into /system is enough and doesn't require any specific ODIN flashed bootloader or modem file.
Mixing different system image and bootloader files isn't really recommended
Click to expand...
Click to collapse
I've got the latest DBQ3 Nougat BTU firmware on my S7 Edge at the moment. If I flash BETA 1 BL, CP and CSC is there a chance i'll brick it?

chrissyyyw said:
I've got the latest DBQ3 Nougat BTU firmware on my S7 Edge at the moment. If I flash BETA 1 BL, CP and CSC is there a chance i'll brick it?
Click to expand...
Click to collapse
Nope, it's working fine. Tested on my device.
Update in the first post!! S health is working

For testing purposes i flashed as well DQB1 CP file, volte still works.

Pichulec said:
For testing purposes i flashed as well DQB1 CP file, volte still works.
Click to expand...
Click to collapse
Like I said before, of course it would. VoLTE does not depend on the modem or the bootloader.
ALL of the code enabling VoLTE is in the CSC file

I have followed instructions on post 1 on my s7 edge dual sim on 3UK but still not getting Volte - can anyone help?

It is hard to say why you not getting it. Solution worked in my case but im on EE uk. I tried hard and no other solution worked for me.
Did you flash full dqb3 rom first? And then those 3 files?

Flashed from MM to Nougat, with original BTU file from sammobile and VoLTE worked in an instant.
so i think it the depends on where you live

Pichulec said:
It is hard to say why you not getting it. Solution worked in my case but im on EE uk. I tried hard and no other solution worked for me.
Did you flash full dqb3 rom first? And then those 3 files?
Click to expand...
Click to collapse
Yes I did. Is there an option you need to activate within the software?

Nope, it should activate itself when available.

Pichulec said:
Nope, it should activate itself when available.
Click to expand...
Click to collapse
Are you using a dual sim s7 edge?

no

Hi. Do we have any solutions for S7 Edge TMobile being used in India?? I bought 935T wasnt able to use volte, flashed 935U still unable to use volte. Currently using a work around of using a carrier app VoiceJio to make and recve calls... Any solutions on how to gt the volte working in India??? Please help..

This is snapdragon device, i cant help you my friend.

Changing CSC without root

Is it possible to change CSC with the end result being unrooted? By this I mean if it requires me to root in order to change CSC that is okay, but then can I unroot while keeping the CSC I changed to? The reason I ask is because I want to be able to use banking and other apps (I've read that root prevents these apps from working) but at the same time I want to have wifi calling and voLTE for my carrier.

the_OZONE said:
Is it possible to change CSC without root? The reason I ask is because I want to be able to use banking and other apps (I've read that root prevents these apps from working) but at the same time I want to have wifi calling and voLTE for my carrier.
Click to expand...
Click to collapse
Right, without root, all you need to do, visit sammobile and download then flash the compatible image from the carrier you want to switch to. However, be aware, of hardware limitations i.e.) you cannot flash a snapdgragon fw on a exynos phone for example.
Now if you had root on the other hand, you can do this in a matter of mins and not loose any files.

cantenna said:
Right, without root, all you need to do, visit sammobile and download then flash the compatible image from the carrier you want to switch to. However, be aware, of hardware limitations i.e.) you cannot flash a snapdgragon fw on a exynos phone for example.
Now if you had root on the other hand, you can do this in a matter of mins and not loose any files.
Click to expand...
Click to collapse
I wanted to use a CSC that allows AT&T wifi calling and voLTE. This thread https://forum.xda-developers.com/ga...ility-flashable-csc-selection-v1-0-0-t3605264 shows that it is possible to flash USA Multi-CSC using TWRP and root, which includes AT&T. So is it possible to have this CSC on the G955F while being unrooted? If it requires me to root and then unroot in order to change the CSC, I would be okay with that too as long as the CSC stays.
Based on what you said, I'm assuming the answer is no because the AT&T variant is the snapdragon variant, so I'm guessing that means the CSC wouldn't be supported in exynos unless flashed via root and then remaining rooted. Correct?

if you have Exynos phone you got root as an option
Sent from my SM-G955F using Tapatalk

cantenna said:
if you have Exynos phone you got root as an option
Click to expand...
Click to collapse
Right, but the problem is that with root I won't have access to banking and other apps. So I was hoping maybe I'd be able to root, flash the CSC, then unroot and find a way to keep the CSC. Basically, on exynos, I want to be able to have the AT&T CSC and banking apps at the same time.

the_OZONE said:
Right, but the problem is that with root I won't have access to banking and other apps. So I was hoping maybe I'd be able to root, flash the CSC, then unroot and find a way to keep the CSC. Basically, on exynos, I want to be able to have the AT&T CSC and banking apps at the same time.
Click to expand...
Click to collapse
i have the 955FD with an ATT CSC and Wifi calling isn't working and i can't visually tell if VoLTE is working. next step is to get an ATT imei assigned to my number to see if that fixes it. bottom line, changing to ATT CSC is not guaranteed to get the aforementioned services working on your 955F.

Root it , fix it and get voLTE then use hideroot to hide root on that banking apps .

Hello !
You can change CSC for S8/S8+
1. Download combination rom for your S8/S8+
2. Download S8/S8+ rom with 4 file
3. Open Odin and Flash with combination ROM (AP) + CSC (rom file HOME_CSC.........) (*don't use CSC_................)
4. Wait for phone boot up, in Factory Imei input *#243203855#, anh chose you need csc --> install, phone will reset.......
5. Now Flash your phone with your coutry rom.
Done !
p/s: I buy S8+ in cambodia with CAM csc, use this method successful change to XXV csc.
Seach with Google:
COMBINATION_FA70_G955FDXU1AQD1_CL11075180_QB130870 97_REV00_user_mid_noship.tar
COMBINATION_FA70_G950FDXU1AQD1_CL11075180_QB130870 97_REV00_user_mid_noship.tar

ngominh said:
Hello !
You can change CSC for S8/S8+
1. Download combination rom for your S8/S8+
2. Download S8/S8+ rom with 4 file
3. Open Odin and Flash with combination ROM (AP) + CSC (rom file HOME_CSC.........) (*don't use CSC_................)
4. Wait for phone boot up, in Factory Imei input *#243203855#, anh chose you need csc --> install, phone will reset.......
5. Now Flash your phone with your coutry rom.
Done !
p/s: I buy S8+ in cambodia with CAM csc, use this method successful change to XXV csc.
Seach with Google:
COMBINATION_FA70_G955FDXU1AQD1_CL11075180_QB130870 97_REV00_user_mid_noship.tar
COMBINATION_FA70_G950FDXU1AQD1_CL11075180_QB130870 97_REV00_user_mid_noship.tar
Click to expand...
Click to collapse
What do you mean with "Factory Imei"? It's a menu or something? In phone dialer that code doesn't work...

Same question here what does "Factory Imei"? It's a menu or something?
Also in step 3 assuming you have to put the CSC of the new CSC area you want. Also usually you flash CSC and not HOME_CSC. In this case it is reverse, any reason why ?

i have same objective as yours, i have SM-G9550 which is hongkong variant (non-root) and it is snap with 6gb pf ram and 128gb of rom. I want to change CSC to Thailand (THL) to use VOLTE and VOWIFI. But problem is Thai variant is EXYNOS paired with 4gb of ram and 64gb of rom. So is there anyway to work this without root as i need to use Knox and samsung pay so root will deatroy it correct?

ngominh said:
Hello !
You can change CSC for S8/S8+
1. Download combination rom for your S8/S8+
2. Download S8/S8+ rom with 4 file
3. Open Odin and Flash with combination ROM (AP) + CSC (rom file HOME_CSC.........) (*don't use CSC_................)
4. Wait for phone boot up, in Factory Imei input *#243203855#, anh chose you need csc --> install, phone will reset.......
5. Now Flash your phone with your coutry rom.
Done !
p/s: I buy S8+ in cambodia with CAM csc, use this method successful change to XXV csc.
Seach with Google:
COMBINATION_FA70_G955FDXU1AQD1_CL11075180_QB130870 97_REV00_user_mid_noship.tar
COMBINATION_FA70_G950FDXU1AQD1_CL11075180_QB130870 97_REV00_user_mid_noship.tar
Click to expand...
Click to collapse
Don't talk RUBBISH!!!
This is NOT possible without root!

henklbr said:
Don't talk RUBBISH!!!
This is NOT possible without root!
Click to expand...
Click to collapse
No it's all possible check out the carrier switch thread in the s8 forums
Sent from my SM-G955U using XDA-Developers Legacy app

You could try from the phone dialer: *#243203855# that's to change CSC, keep in mind it will reset your phone so make a backup first. The screenshot shows CSC for Canada since I'm in Canada.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Sent from my SM-G955W using XDA-Developers Legacy app

Cyclops1055 said:
You could try from the phone dialer: *#243203855# that's to change CSC, keep in mind it will reset your phone so make a backup first. The screenshot shows CSC for Canada since I'm in Canada.
Click to expand...
Click to collapse
This code doesn't work on my Exynos, Can you help me please I want to change it.

the_OZONE said:
Is it possible to change CSC with the end result being unrooted? By this I mean if it requires me to root in order to change CSC that is okay, but then can I unroot while keeping the CSC I changed to? The reason I ask is because I want to be able to use banking and other apps (I've read that root prevents these apps from working) but at the same time I want to have wifi calling and voLTE for my carrier.
Click to expand...
Click to collapse
You can change the CSC region successfully using @ngominh's method.
But you have to find "The Combination" file for your phone to do it and that
is usually a "Paid" firmware which is different than your normal stock firmware!
You find that and you can change the CSC successfully!

To change csc if you are on multi firmware
Type *#272*IMEI#
It will show list of available csc
Then choose the csc you want
It will factory reset device
Back up all files and try

yash92duster said:
To change csc if you are on multi firmware
Type *#272*IMEI#
It will show list of available csc
Then choose the csc you want
It will factory reset device
Back up all files and try
Click to expand...
Click to collapse
I'm on multi csc but this code does nothing on my Exynos S8+.

samcex said:
I'm on multi csc but this code does nothing on my Exynos S8+.
Click to expand...
Click to collapse
Type *#272*IMEI#
in IMEI type your imei code 12445765xxxxxx934934
it works fine for me
it will show a list and after selecting any csc it will factory reset
i tried and only gave a way to change csc
you try again
i dont know what you typed

yash92duster said:
Type *#272*IMEI#
in IMEI type your imei code 12445765xxxxxx934934
it works fine for me
it will show a list and after selecting any csc it will factory reset
i tried and only gave a way to change csc
you try again
i dont know what you typed
Click to expand...
Click to collapse
First of all how can I confirm I'm on multi csc, would you help me troubleshoot this ?

[Help] Changing Service Provider SW

Hey guys, I bought my s8+ 955FD in Thailand, and no matter what I flash the initial language is always Thai, the Google Playstore is always set to Thailand, what I realised is that the Service provider SW ver in software information is always set TH/TH/TH, is there any way to change this?

Yes there is. Find a CSC package which contains the country language you wish. Make sure the CSC package is for the same version of your overall phone, which if stock may be a 950F, or what ever. flash the CSC with Odin. Do not use the Home CSC from the package, as what will leave your CSC as TH. Some folks have talked about with new phones you need to get a SIM card from the local where the phone was 'meant' to be used, and use if for 5 minutes, so that will effect the 'unlock' ability to be used for other regions. Check into that, as well.
If you decide to change the overall software on the phone, 'F' packages seem to work pretty well. If you do decide to flash an F ROM, you also need to flash an 'F' CSC (multi) package, where you can select the country you wish and the carrier from the install dialogue.
Often the preferred installer for custom ROMS seems to be Aroma, as it is a very flexible installer for ROMs and about anything you can think of to add onto or into a ROM can be incorporated into the Aroma installer.
If you are not going to use a custom ROM, then you will flash a CSC package from Odin, but again, first check to see if you must use your phone for 5 minutes from the SIM local.

JeffDC said:
Yes there is. Find a CSC package which contains the country language you wish. Make sure the CSC package is for the same version of your overall phone, which if stock may be a 950F, or what ever. flash the CSC with Odin. Do not use the Home CSC from the package, as what will leave your CSC as TH. Some folks have talked about with new phones you need to get a SIM card from the local where the phone was 'meant' to be used, and use if for 5 minutes, so that will effect the 'unlock' ability to be used for other regions. Check into that, as well.
If you decide to change the overall software on the phone, 'F' packages seem to work pretty well. If you do decide to flash an F ROM, you also need to flash an 'F' CSC (multi) package, where you can select the country you wish and the carrier from the install dialogue.
Often the preferred installer for custom ROMS seems to be Aroma, as it is a very flexible installer for ROMs and about anything you can think of to add onto or into a ROM can be incorporated into the Aroma installer.
If you are not going to use a custom ROM, then you will flash a CSC package from Odin, but again, first check to see if you must use your phone for 5 minutes from the SIM local.
Click to expand...
Click to collapse
I have flashed multiple stock roms with their respective CSC and it does not work that was my question

Have you used the phone for 5 minutes within the originating region?
"Some folks have talked about with new phones you need to get a SIM card from the local where the phone was 'meant' to be used, and use if for 5 minutes" . . . in order to functionally unlock it for out of the region use. Is your software that version?
When you flash the phone, what SIM is inside the phone before the reboot?
Are you rooted? If so flash via TWRP and a CSC which has an Aroma installer.
What else can you tell us about the specifics of your phone?
If you re-flash the OEM firmware, or when your first setup new, do you get any language options on the start setup page, besides Thai?

JeffDC said:
Have you used the phone for 5 minutes within the originating region?
"Some folks have talked about with new phones you need to get a SIM card from the local where the phone was 'meant' to be used, and use if for 5 minutes" . . . in order to functionally unlock it for out of the region use. Is your software that version?
When you flash the phone, what SIM is inside the phone before the reboot?
Are you rooted? If so flash via TWRP and a CSC which has an Aroma installer.
What else can you tell us about the specifics of your phone?
If you re-flash the OEM firmware, or when your first setup new, do you get any language options on the start setup page, besides Thai?
Click to expand...
Click to collapse
Dear Jeff, thank you for the help and the follow-up. I have managed to change it partially by inserting a new SIM from the new country(Brazil) and when I did so, it asked me for a reset and I went through with it, now it's ZTO/ZTO/THL ---- so the first two changed to Brazilian CSC but the third one is still THL, any thoughts? what's the difference between the 3? And yes I had used it for a lot longer than 5 minutes when I was in Thailand. I just want to get a clean install without any remnants from THL - I am currently on CRAP/CRB7 - Waiting the 7 needed days to get OEM unlock and be able to flash TWRP(from what I understood), please tell me what to do to get rid of the THL from my phone completely. Thank you So much

Once rooted, find a multi-CSC package with your country and flash it (again). You might need to flash the baseband, so I'd look into that, as well.
On an S7 from with a Chinese CSC, once I found a custom ROM, , I flashed TWRP in Odin, booted into TWRP/recovery, flashed the custom ROM, verity and SU, and then flashed a multi-CSC package Aroma package, mine lost all the Chinese info.
Sure would be great if these phone companies would just give us unlocked phones, with straight forward methods to make these simple changes. I think most folks would pay a little extra for the ability.

Hi Louayd. Did you fix this issue?
I'm passing the same problem with S9+. I bought in Portugal and trying to use in Brazil. I can't root phone because my intention is use the Samsung Pay and it with rooted phone it doesn't work.

I am facing the same issue. I bought Note9 from Singapore from M1 Operator. I have flashed different countries ROMs but my phone always keep some bloatware from M1 Singapore and the "Service Provider SW Ver" always show MM1/MM1,MM1/XSP despite whatever country/region Stock ROM I flashed. My phone is already OEM Unlocked.
Need support if anyone has managed to change it.
I do not have Original Country SIM to test as mentioned above. I bought it from Singapore and wanted to use it in Cambodia. Right now VoLTE functionality is not working.
I tried to use ShortcutMaster app also but it is also not able to show anything under IMS Service and Settings.
Regards,

Can i flash csc of samsung a750f on a750gn??
Basically i need call recording which is not supported in 750gn , but available in 750f..

Galaxy A51 2020
JeffDC said:
Yes there is. Find a CSC package which contains the country language you wish. Make sure the CSC package is for the same version of your overall phone, which if stock may be a 950F, or what ever. flash the CSC with Odin. Do not use the Home CSC from the package, as what will leave your CSC as TH. Some folks have talked about with new phones you need to get a SIM card from the local where the phone was 'meant' to be used, and use if for 5 minutes, so that will effect the 'unlock' ability to be used for other regions. Check into that, as well.
If you decide to change the overall software on the phone, 'F' packages seem to work pretty well. If you do decide to flash an F ROM, you also need to flash an 'F' CSC (multi) package, where you can select the country you wish and the carrier from the install dialogue.
Often the preferred installer for custom ROMS seems to be Aroma, as it is a very flexible installer for ROMs and about anything you can think of to add onto or into a ROM can be incorporated into the Aroma installer.
If you are not going to use a custom ROM, then you will flash a CSC package from Odin, but again, first check to see if you must use your phone for 5 minutes from the SIM local.
Click to expand...
Click to collapse
I have this issue i installed firmware SM-A515F Greece EUR from sammobile but is still Service provider ver. in SER but of Greece EUR firmware has been installed normally but in the Service provider ver. not change to Greece EUR
how to fix this?

JeffDC said:
Yes there is. Find a CSC package which contains the country language you wish. Make sure the CSC package is for the same version of your overall phone, which if stock may be a 950F, or what ever. flash the CSC with Odin. Do not use the Home CSC from the package, as what will leave your CSC as TH. Some folks have talked about with new phones you need to get a SIM card from the local where the phone was 'meant' to be used, and use if for 5 minutes, so that will effect the 'unlock' ability to be used for other regions. Check into that, as well.
If you decide to change the overall software on the phone, 'F' packages seem to work pretty well. If you do decide to flash an F ROM, you also need to flash an 'F' CSC (multi) package, where you can select the country you wish and the carrier from the install dialogue.
Often the preferred installer for custom ROMS seems to be Aroma, as it is a very flexible installer for ROMs and about anything you can think of to add onto or into a ROM can be incorporated into the Aroma installer.
If you are not going to use a custom ROM, then you will flash a CSC package from Odin, but again, first check to see if you must use your phone for 5 minutes from the SIM local.
Click to expand...
Click to collapse
I installed firmware SM-A515F EUR from sammobile but is still Service provider ver. in SER but Of Greece EUR CSC has been installed but in the Service provider ver. not change to Greece EUR
how to fix this?
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

Samsung Galaxy S7 - Germany (DBT) - Custom Binary FRP Lock workaround

Hello guys,
so some months ago my aunt approached me asking me to "repair" her phone which didn't boot anymore after she installled an OTA update.
Now she is been greeted by the Samsung Logo and the message "Custom binary locked by frp lock" and that in an ongoing loop.
What I tried:
> flashing several stock roms (Android 6, Android 7 oldest version and newest versions)
> flashing roms from other countries in EU (UK, Austria, CH)
> flashing with ODIN and KIES (Kies didn't really work tho)
but all of it didn't work.
I fear that I might didn't check if "Re-Partition" was checked in Odion because after several tries and downloading thos Stock Roms with 20 Kb/s I was kinda frustrated when it didn't work..
currently the phone is still boot-looping with the same message as before.
It doesn't matter if I loose every data, as my aunt has a new phone by now!
If the phone has be re-partitioned by Odin is there anyway to fix it or better what are the signs for a Re-Partition?
Thank you in advance!

Paachan said:
Hello guys,
so some months ago my aunt approached me asking me to "repair" her phone which didn't boot anymore after she installled an OTA update.
Now she is been greeted by the Samsung Logo and the message "Custom binary locked by frp lock" and that in an ongoing loop.
What I tried:
> flashing several stock roms (Android 6, Android 7 oldest version and newest versions)
> flashing roms from other countries in EU (UK, Austria, CH)
> flashing with ODIN and KIES (Kies didn't really work tho)
but all of it didn't work.
I fear that I might didn't check if "Re-Partition" was checked in Odion because after several tries and downloading thos Stock Roms with 20 Kb/s I was kinda frustrated when it didn't work..
currently the phone is still boot-looping with the same message as before.
It doesn't matter if I loose every data, as my aunt has a new phone by now!
If the phone has be re-partitioned by Odin is there anyway to fix it or better what are the signs for a Re-Partition?
Thank you in advance!
Click to expand...
Click to collapse
I am a noob in this, but logicaly reasoning i would say you bricked it bad by flashing away with all kind of csc and firmware down and upgrades.
Your aunt will not be happy.

Jopponius said:
I am a noob in this, but logicaly reasoning i would say you bricked it bad by flashing away with all kind of csc and firmware down and upgrades.
Your aunt will not be happy.
Click to expand...
Click to collapse
Well this reply isn't really that helpful...
1st she doesn't care anymore because as mentioned she already has a new phone and said I can just keep it or throw it away.
2nd even if it's bricked there are ways to get it back to working, I soft bricked my old HTC M8 once and restored it.
3rd If you're a noob with this just don't reply, I've never had experience with Samsung phones before thats why I'm seeking for help, if it comes to HTC or LG phones I usually get things done myself. Not in this case tho.

Jopponius said:
I am a noob in this, but logicaly reasoning i would say you bricked it bad by flashing away with all kind of csc and firmware down and upgrades.
Your aunt will not be happy.
Click to expand...
Click to collapse
No, as was already stated, it bricked with an OTA, flashing different stock ROMs & CSCs would not brick it
---
Try using Samsung SmartSwitch emergency firmware recovery, I think you'll need the phones serial number (Box / back of phone)
Other than that, using ODIN 3.12.3 or newer with the correct stock ROM & CSC the phone originally came with (newest available release), using CSC and not HOME_CSC to force a reset after the flash should work, then you'll need her google account login to get past the FRP lock

*Detection* said:
No, as was already stated, it bricked with an OTA, flashing different stock ROMs & CSCs would not brick it
---
Try using Samsung SmartSwitch emergency firmware recovery, I think you'll need the phones serial number (Box / back of phone)
Other than that, using ODIN 3.12.3 or newer with the correct stock ROM & CSC the phone originally came with (newest available release), using CSC and not HOME_CSC to force a reset after the flash should work, then you'll need her google account login to get past the FRP lock
Click to expand...
Click to collapse
These kind of replies is what I need, thank you! Sadly when trying to use Smart Switch it instructs me to use some kind of "Backup Code" from another PC, I know for a fact my aunt doesn't do any backups and she doesn't even have a proper privat PC. I have a the original packaging IME and such at my hands!
You said flashing with Odin after a flash should work, but should I first use the "HOME_CSC" to flash and then the normal "CSC" to reset it afterwards?

The CSC file is a carrier customization file.: https://forum.xda-developers.com/s7-edge/help/csc-home-csc-simple-t3464835

audit13 said:
The CSC file is a carrier customization file.: https://forum.xda-developers.com/s7-edge/help/csc-home-csc-simple-t3464835
Click to expand...
Click to collapse
so in this case with the DBT version it's just the default customization file from Samsung, am I right?
Flashing either Home_CSC or CSC didn't had any effect on the S7 tho, it's still stuck in Boot loop with FRP Lock.
Let's say the phone is soft bricked, is there any way to get it back working, so I can flash the stock firmware afterwards`?

Paachan said:
These kind of replies is what I need, thank you! Sadly when trying to use Smart Switch it instructs me to use some kind of "Backup Code" from another PC, I know for a fact my aunt doesn't do any backups and she doesn't even have a proper privat PC. I have a the original packaging IME and such at my hands!
You said flashing with Odin after a flash should work, but should I first use the "HOME_CSC" to flash and then the normal "CSC" to reset it afterwards?
Click to expand...
Click to collapse
SmartSwitch Windows version shouldn't ask for any backup codes, only maybe the phone serial number
And no, just forget about HOME_CSC, use CSC instead, this will initiate a factory reset after the flash
AP
BL
CP
CSC
Add all 4 parts to ODIN, put the phone in Download Mode (Volume Down & Home & Power) connect to PC USB and hit start on ODIN (3.12.3 or newer)
It "Should" flash the firmware and factory reset, and so long as there is no hardware fault, it should boot into Android and ask for the Google Login that was connected to the phone before it bricked, once you enter that it will allow the rest of the setup to continue and finally to homescreen
It is possible that there is a hardware fault that caused the OTA to brick in the first place, or that the phone is not what it claims to be (Check in download mode which model it says it is, some are faked to look like International G930F when they are actually Snapdragon US models and require different firmware
If it is G930F, then flashing the latest DBT should work fine so long as it is not hardware related

*Detection* said:
SmartSwitch Windows version shouldn't ask for any backup codes, only maybe the phone serial number
And no, just forget about HOME_CSC, use CSC instead, this will initiate a factory reset after the flash
AP
BL
CP
CSC
Add all 4 parts to ODIN, put the phone in Download Mode (Volume Down & Home & Power) connect to PC USB and hit start on ODIN (3.12.3 or newer)
It "Should" flash the firmware and factory reset, and so long as there is no hardware fault, it should boot into Android and ask for the Google Login that was connected to the phone before it bricked, once you enter that it will allow the rest of the setup to continue and finally to homescreen
It is possible that there is a hardware fault that caused the OTA to brick in the first place, or that the phone is not what it claims to be (Check in download mode which model it says it is, some are faked to look like International G930F when they are actually Snapdragon US models and require different firmware
If it is G930F, then flashing the latest DBT should work fine so long as it is not hardware related
Click to expand...
Click to collapse
That actually helps me a ton, the Product name is fine it says it's a SM-930F so non US, I guess?
After flashing it with the newest available Stock Android 6 firmware (on which it was shipped originally) doesn't lead to anything it's still stucked in boot loop.
I guess it's a hardware fault then and not recoverable in the first place, thank you very much for your help!
I'm gonna try one last time with an older Version of Odin, maybe this leads to something!
Have a great day

I recommend flashing the same firmware onto the phone. Trying to flash an older bootloader may cause the flash process to stop as downgrading the bootloader is usually not permitted.
Do you know if oem unlock was enabled in the ROM settings? I'm not 100% but this may contribute to the issues with factory resetting and getting the phone to work.
Partitioning is not usually required if the computer is able to read he phone's partition table information. If a re-partition is required, you need to use the correct pit file for the phone when flashing a stock ROM in Odin.

audit13 said:
I recommend flashing the same firmware onto the phone. Trying to flash an older bootloader may cause the flash process to stop as downgrading the bootloader is usually not permitted.
Do you know if oem unlock was enabled in the ROM settings? I'm not 100% but this may contribute to the issues with factory resetting and getting the phone to work.
Partitioning is not usually required if the computer is able to read he phone's partition table information. If a re-partition is required, you need to use the correct pit file for the phone when flashing a stock ROM in Odin.
Click to expand...
Click to collapse
the OEM unlock setting was on default, so off I guess? It was just a regular OTA update and then the phone was stuck in a boot loop.
As *Detection* said it's probably is a hardware related issue I just now noticed that the status LED doesn't even light up if you charge the device (maybe this is an idicator)
I would've gladly used it as a backup device but I think it's just an expensive paperweight by now.
Still thank you for your help, appreciate it!

Sounds like you have tried all you can on your own. Maybe take it to a cell repair shop and have them try to force flash the phone using hardware such as an octopusbox?

Paachan said:
That actually helps me a ton, the Product name is fine it says it's a SM-930F so non US, I guess?
After flashing it with the newest available Stock Android 6 firmware (on which it was shipped originally) doesn't lead to anything it's still stucked in boot loop.
I guess it's a hardware fault then and not recoverable in the first place, thank you very much for your help!
I'm gonna try one last time with an older Version of Odin, maybe this leads to something!
Have a great day
Click to expand...
Click to collapse
Yep G930F is International Exynos so you should be good
Some people have problems downgrading from 7.0 to 6.0, what I meant was flash the latest available firmware for DBT, which is 7.0
2018-04-23
Germany
7.0
G930FXXS2DRDI
As above, the bootloader can be a pain to downgrade, so always try unbricking with the latest firmware available
Same process as I posted above, only using the firmware in this post ^^
Good luck
---------- Post added at 19:59 ---------- Previous post was at 19:50 ----------
Paachan said:
I just now noticed that the status LED doesn't even light up if you charge the device (maybe this is an indicator)
Click to expand...
Click to collapse
Yea that doesn't sound good, possibly a faulty motherboard, they seem to be quite a high % of hardware faults of the S7 on XDA, at least that is the outcome of sending them in for repair, but also could be the repair centres way of making the most £

Paachan said:
the OEM unlock setting was on default, so off I guess? It was just a regular OTA update and then the phone was stuck in a boot loop.
As *Detection* said it's probably is a hardware related issue I just now noticed that the status LED doesn't even light up if you charge the device (maybe this is an idicator)
I would've gladly used it as a backup device but I think it's just an expensive paperweight by now.
Still thank you for your help, appreciate it!
Click to expand...
Click to collapse
What version bootloader is it running go to download mode to find out top left corner last line of writing will be AP SWREV B:? what number is next to the B you will need to match this to the firmware you are trying to flash for example i use unbranded australian G930FXXU2DRBE firmware and in download mode my AP SWREV is B:2 the number signifies the bootloader its running some exapmes are below for you
AP SWREV B:1 = G930FXX "U1" DRBE
AP SWREV B:2 = G930FXX "U2" DRBE
AP SWREV B:3 = G930FXX "U3" DRBE
You need to match the number next to AP SWREV B:? with the firmware number "U?" For it to work even if it is the same marshmallow or nougat OS it must use the correct bootloader and firmware appropriate to be able to boot i have encountered this problem on numerous occasions if you try to flash a U1 to a U2 binary it will not boot it will not even write it to the memory and you will end uo with a bricked device until the appropriate firmware has been flashed using odin.
You need to also make sure you are using the latest version of odin and have all the drivers installed to your pc for the phone also the status led will not illuminate either while its bricked like this either you will not get this until the OS has been repaired.
If none of this works you could always flash TWRP to it with odin in the AP tab download linage 15.1 oreo 8.1 custom rom for G930F exynos and a gapps .ZIP files move them to an sd card and insert into phone boot into twrp swipe to allow modifications first tap back up and select EFS & BASEBAND and backup this contains your imei number you always should have a back up before flashing a custom rom just incase something goes wrong now after that go to wipe tap the format button on the right and select everything exept otg this will wipe everything and i mean everything OS related which is really want you want to do and also remove the DM verity encryption from the device to be able to boot no after that go to install and select the .ZIP rom and gapps and install after boot you can then re flash stock rom with odin and it should boot however warranty will be void and samsung KNOX will be triggered which means secure file cannot be used nor samsung health app however there is a simple solution i have found to get samsung health running on a rooted device i hope this helps its always worked for me ive purposly bricked my dev G930F so many times on purpose even lost the imei number before and gotten it back without flashing the backup they are really quite hard phones to break software wise.
Thanks
Matty1993

Matty1993 said:
What version bootloader is it running go to download mode to find out top left corner last line of writing will be AP SWREV B:? what number is next to the B you will need to match this to the firmware you are trying to flash for example i use unbranded australian G930FXXU2DRBE firmware and in download mode my AP SWREV is B:2 the number signifies the bootloader its running some exapmes are below for you
AP SWREV B:1 = G930FXX "U1" DRBE
AP SWREV B:2 = G930FXX "U2" DRBE
AP SWREV B:3 = G930FXX "U3" DRBE
You need to match the number next to AP SWREV B:? with the firmware number "U?" For it to work even if it is the same marshmallow or nougat OS it must use the correct bootloader and firmware appropriate to be able to boot i have encountered this problem on numerous occasions if you try to flash a U1 to a U2 binary it will not boot it will not even write it to the memory and you will end uo with a bricked device until the appropriate firmware has been flashed using odin.
You need to also make sure you are using the latest version of odin and have all the drivers installed to your pc for the phone also the status led will not illuminate either while its bricked like this either you will not get this until the OS has been repaired.
If none of this works you could always flash TWRP to it with odin in the AP tab download linage 15.1 oreo 8.1 custom rom for G930F exynos and a gapps .ZIP files move them to an sd card and insert into phone boot into twrp swipe to allow modifications first tap back up and select EFS & BASEBAND and backup this contains your imei number you always should have a back up before flashing a custom rom just incase something goes wrong now after that go to wipe tap the format button on the right and select everything exept otg this will wipe everything and i mean everything OS related which is really want you want to do and also remove the DM verity encryption from the device to be able to boot no after that go to install and select the .ZIP rom and gapps and install after boot you can then re flash stock rom with odin and it should boot however warranty will be void and samsung KNOX will be triggered which means secure file cannot be used nor samsung health app however there is a simple solution i have found to get samsung health running on a rooted device i hope this helps its always worked for me ive purposly bricked my dev G930F so many times on purpose even lost the imei number before and gotten it back without flashing the backup they are really quite hard phones to break software wise.
Thanks
Matty1993
Click to expand...
Click to collapse
Holy, this is a pretty explicit answer, thank you!
Judging by that I seem to have the right firmware for my Boatloader:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Sorry for my late reply!

Paachan said:
Holy, this is a pretty explicit answer, thank you!
Judging by that I seem to have the right firmware for my Boatloader:
Sorry for my late reply!
Click to expand...
Click to collapse
No problem for the late reply yep firmware looks good matches to the BL however i noticed its says your binary and OS are custom when it should say official in donload mode was it previously rooted at some point ? Also have you downloaded the firmware from sammobile ? I would suggest using them for full original firmware packages as they have not been altered and will not apprear as custom when you try to flash with odin, does it complete the flash process and say pass or does it say fail ? Youll also notice when you flash on the screen of the phone it will have a progress bar in sync with odin does it complete the process and reboot or does it say blocked by frp lock if it says blocked by frp lock the firmware your trying to flash is not official you will need official firmware also as it already says custom find a twrp recovery.tar from the twrp website open odin place it in the AP section as soon as it reboots hold the power home ans volume up buttons until twrp appears swipe to allow modifications now go to wipe instead of factory resetting there will be a button saying format on the right tap that and type yes this will erase everything including the custom os it has on it i want you to do this step first before trying to flash the original firmware package as it will wipe everything for a fresh clean install.

Paachan said:
Holy, this is a pretty explicit answer, thank you!
Judging by that I seem to have the right firmware for my Boatloader:
Sorry for my late reply!
Click to expand...
Click to collapse
I'm not 100% sure about this, but that firmware states S2 not U2
See here, my BL is B:2 but all of the firmware files I can successfully flash are U2

Matty1993 said:
No problem for the late reply yep firmware looks good matches to the BL however i noticed its says your binary and OS are custom when it should say official in donload mode was it previously rooted at some point ? Also have you downloaded the firmware from sammobile ? I would suggest using them for full original firmware packages as they have not been altered and will not apprear as custom when you try to flash with odin, does it complete the flash process and say pass or does it say fail ? Youll also notice when you flash on the screen of the phone it will have a progress bar in sync with odin does it complete the process and reboot or does it say blocked by frp lock if it says blocked by frp lock the firmware your trying to flash is not official you will need official firmware also as it already says custom find a twrp recovery.tar from the twrp website open odin place it in the AP section as soon as it reboots hold the power home ans volume up buttons until twrp appears swipe to allow modifications now go to wipe instead of factory resetting there will be a button saying format on the right tap that and type yes this will erase everything including the custom os it has on it i want you to do this step first before trying to flash the original firmware package as it will wipe everything for a fresh clean install.
Click to expand...
Click to collapse
Actually scratch that frp lock is on you cannot flash anything custom to it while it is on just download your firmware from sammobile they have every country and are 100% official i will only download my firmwarw from there it is completely free to make an account and download the only thing is download speeds are slow so will take 2-3 hours to download is the only downfall but gauranteed to be official once downloaded place The files in corresponding slots in odin but with CSC just use CSC & not HOME_CSC this will perform a full wipe
Also maybe download U2 firmware aswell as S2 firmware

Matty1993 said:
Actually scratch that frp lock is on you cannot flash anything custom to it while it is on just download your firmware from sammobile they have every country and are 100% official i will only download my firmwarw from there it is completely free to make an account and download the only thing is download speeds are slow so will take 2-3 hours to download is the only downfall but gauranteed to be official once downloaded place The files in corresponding slots in odin but with CSC just use CSC & not HOME_CSC this will perform a full wipe
Click to expand...
Click to collapse
samfirm tool on XDA is full speed and downloads the latest stock ROM for whichever device you enter, direct from samsung servers

*Detection* said:
samfirm tool on XDA is full speed and downloads the latest stock ROM for whichever device you enter, direct from samsung servers
Click to expand...
Click to collapse
Or that also maybe yeah try U2 firmware instead of S2 as far as im aware S2 is the first of the B:2 binary updates

Question FirstNet Unlocked Guide

Converting your Unlocked device over to FirstNet firmware requires Patched Odin you need the v3.14.1 Patched version. You will also need the newest TMB (universal) carrier firmware, links below. Extract the zip when the download completes. You will not lose any data or factory reset during this process. You will need an ATT sim card.
S22
S22 Plus
S22 Ultra
Take your current S22 running the unlocked U1 firmware (don't skip this step, only U1 firmware can make the change to the ATT - CSC) and insert an ATT sim it has to be ATT not your FN Sim. If you don't have one you can try your local ATT store with a FirstNet rep and explain that you just need an unactivated ATT sim. If they give you any trouble, WalMart sells prepaid ones for $10.
Insert the ATT sim, you will get a pop-up explaining that the phone needs to restart to apply ATT settings. Let it restart. Once your phone is up and running, power it down.
Open Patched Odin and load up all the respective files from the folder you downloaded. Use BL, AP, CP and HOME_CSC (using the other CSC will factory reset and revert to XAA firmware.) now put your phone in download mode (boot up while holding power + vol up + vol down.) Once in download mode connect the phone via USB to your computer. Once Patched Odin recognizes the phone go ahead and flash. Your phone will reboot with an ATT logo. You can now swap back to the FN Sim.
Now you have a FirstNet S22.

For anyone wondering this method currently works on the SM-F936U1 (unlocked Fold 4).

You can activate the ATT CSC by using samfw's frp tool and just changing CSC to ATT.

craznazn said:
You can activate the ATT CSC by using samfw's frp tool and just changing CSC to ATT.
Click to expand...
Click to collapse
I was just thinking if this was possible. I just found out about SanFw's frp Tool. I was thinking of going back to U1 firmware and then use the tool to just change CSC to ATT

kraz01 said:
I was just thinking if this was possible. I just found out about SanFw's frp Tool. I was thinking of going back to U1 firmware and then use the tool to just change CSC to ATT
Click to expand...
Click to collapse
If you do this can you post here if it works or not? I want to go back to firstnet when i return to the us and this would make it easy.
I wonder if just changing the csc will remove the unlocked firmware features like the built in caller id and spam blocker. Anyone know?

craznazn said:
You can activate the ATT CSC by using samfw's frp tool and just changing CSC to ATT.
Click to expand...
Click to collapse
Can you confirm this will allow my factory unlocked S22 Ultra to work on FirstNet?

ErickF said:
If you do this can you post here if it works or not? I want to go back to firstnet when i return to the us and this would make it easy.
I wonder if just changing the csc will remove the unlocked firmware features like the built in caller id and spam blocker. Anyone know?
Click to expand...
Click to collapse
I'm going to try it today. I'll post my results later on.

craznazn said:
You can activate the ATT CSC by using samfw's frp tool and just changing CSC to ATT.
Click to expand...
Click to collapse
I used SamFw Tool to change the CSC but after restart, the phone forces a restart and reverts back to XAA when i put in the FirstNet Sim. Any idea on how to get the CSC to stay?

This is what is is going back too.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

kraz01 said:
I used SamFw Tool to change the CSC but after restart, the phone forces a restart and reverts back to XAA when i put in the FirstNet Sim. Any idea on how to get the CSC to stay?
Click to expand...
Click to collapse
Dont have an answer for you but when you go to SIM card status and are not connected to wifi does it show the IMS registration status as registered? If so it might be working.

kraz01 said:
I used SamFw Tool to change the CSC but after restart, the phone forces a restart and reverts back to XAA when i put in the FirstNet Sim. Any idea on how to get the CSC to stay?
Click to expand...
Click to collapse
In adb:
Code:
pm uninstall -k --user 0 com.samsung.android.cidmanager

brajonrondo said:
Converting your Unlocked device over to FirstNet firmware requires Patched Odin you need the v3.14.1 Patched version. You will also need the newest TMB (universal) carrier firmware, links below. Extract the zip when the download completes. You will not lose any data or factory reset during this process. You will need an ATT sim card.
S22
S22 Plus
S22 Ultra
Take your current S22 running the unlocked U1 firmware (don't skip this step, only U1 firmware can make the change to the ATT - CSC) and insert an ATT sim it has to be ATT not your FN Sim. If you don't have one you can try your local ATT store with a FirstNet rep and explain that you just need an unactivated ATT sim. If they give you any trouble, WalMart sells prepaid ones for $10.
Insert the ATT sim, you will get a pop-up explaining that the phone needs to restart to apply ATT settings. Let it restart. Once your phone is up and running, power it down.
Open Patched Odin and load up all the respective files from the folder you downloaded. Use BL, AP, CP and HOME_CSC (using the other CSC will factory reset and revert to XAA firmware.) now put your phone in download mode (boot up while holding power + vol up + vol down.) Once in download mode connect the phone via USB to your computer. Once Patched Odin recognizes the phone go ahead and flash. Your phone will reboot with an ATT logo. You can now swap back to the FN Sim.
Now you have a FirstNet S22.
Click to expand...
Click to collapse
WILL THIS WORK ON TMOBILE S22 ULTRA?

invalidsim said:
WILL THIS WORK ON TMOBILE S22 ULTRA?
Click to expand...
Click to collapse
Yes flash to U1 first and then use the AT&T sim with the guide above.

brajonrondo said:
Converting your Unlocked device over to FirstNet firmware requires Patched Odin you need the v3.14.1 Patched version. You will also need the newest TMB (universal) carrier firmware, links below. Extract the zip when the download completes. You will not lose any data or factory reset during this process. You will need an ATT sim card.
S22
S22 Plus
S22 Ultra
Take your current S22 running the unlocked U1 firmware (don't skip this step, only U1 firmware can make the change to the ATT - CSC) and insert an ATT sim it has to be ATT not your FN Sim. If you don't have one you can try your local ATT store with a FirstNet rep and explain that you just need an unactivated ATT sim. If they give you any trouble, WalMart sells prepaid ones for $10.
Insert the ATT sim, you will get a pop-up explaining that the phone needs to restart to apply ATT settings. Let it restart. Once your phone is up and running, power it down.
Open Patched Odin and load up all the respective files from the folder you downloaded. Use BL, AP, CP and HOME_CSC (using the other CSC will factory reset and revert to XAA firmware.) now put your phone in download mode (boot up while holding power + vol up + vol down.) Once in download mode connect the phone via USB to your computer. Once Patched Odin recognizes the phone go ahead and flash. Your phone will reboot with an ATT logo. You can now swap back to the FN Sim.
Now you have a FirstNet S22.
Click to expand...
Click to collapse
can confirm this works for firstnet on s23 ultra. SM-S918U1.
Wifi calling, visual voice mail, volte, and real 5g+ all working after home csc update.
Just make sure firstnet account is provisioned for the features, it's free just call them. Don't listen to their support "techs" tell you a u1 phone won't work with features, it will. FYI prior to update u1 is stuck on lte and can't use 5g/5g+ even if it says it's connected.