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[HELP] Derped by new Z3 (or maybe it's SIM Locked)

I broke my Z3 and got a replacement a few days ago.
After I flashed pre-rooted 23.4.A.0.546, linked here, the he replacement shows the dreaded Invalid Card. Emergency calls only:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
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"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
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"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
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I never tested the device, I went directly for the root, ZX discovery and pre-rooted flash.
As quick explanation:
I got the device.
I never inserted a SIM, I immediately followed the instruction to root a Z3 with a locked BL:
- downgraded phone with D6603_23.0.A.2.93 ftf linked here.
- ran giofroot exploit. used v3.1. had to run it twice.
- mounted /system rw with ES Explorer.
- installed Z3 Dualrecovery for locked BL.
- then flashed 23.4.A.0.546 linked here.
Phone turned on without a hitch.
When I placed the SIM, I noticed the Invalid Card notice.
Tried (and failed) attempts:
Since then, I've rolled back to D6603_23.0.A.2.93.
Installed PC Companion (eeew) and done a system repair.
Downloaded the latest firmware from xperifirm for Telcel's branded ROM.
nothing. device still says Invalid Card.
a few screenshots that might help someone get a better understanding of what happened;
can anyone confirm if I have a SIM-locked device or if I flashed the wrong firmware?
How can I roll back? what measurements can I take to better understand the problem?

Hobbess2099 said:
I broke my Z3 and got a replacement a few days ago.
After I flashed pre-rooted 23.4.A.0.546, linked here, the he replacement shows the dreaded Invalid Card. Emergency calls only:
I never tested the device, I went directly for the root, ZX discovery and pre-rooted flash.
As quick explanation:
I got the device.
I never inserted a SIM, I immediately followed the instruction to root a Z3 with a locked BL:
- downgraded phone with D6603_23.0.A.2.93 ftf linked here.
- ran giofroot exploit. used v3.1. had to run it twice.
- mounted /system rw with ES Explorer.
- installed Z3 Dualrecovery for locked BL.
- then flashed 23.4.A.0.546 linked here.
Phone turned on without a hitch.
When I placed the SIM, I noticed the Invalid Card notice.
Tried (and failed) attempts:
Since then, I've rolled back to D6603_23.0.A.2.93.
Installed PC Companion (eeew) and done a system repair.
Downloaded the latest firmware from xperifirm for Telcel's branded ROM.
nothing. device still says Invalid Card.
a few screenshots that might help someone get a better understanding of what happened;
can anyone confirm if I have a SIM-locked device or if I flashed the wrong firmware?
How can I roll back? what measurements can I take to better understand the problem?
Click to expand...
Click to collapse
Maybe this is important; when I downgraded the first time, I checked the following exemptions:
- KERNEL
- FOTA
- BASEBAND

Hobbess2099 said:
Maybe this is important; when I downgraded the first time, I checked the following exemptions:
- KERNEL
- FOTA
- BASEBAND
Click to expand...
Click to collapse
You did it wrong. NEVER check to exclude FOTA BASEBAND AND KERNEL.
baseband is what controls the radio (network) and it is very important. Flash again properly and don't check anything in exclude, but ALL in WIPE. In downgrade you MUST wipe everything.
Sent from my D6603 using Tapatalk

Thanks.
Is there a way to know which carrier is locking the device? Besides trying Sims from each carrier, I mean.
Sent from my SGP611 using Tapatalk

Hobbes2099 said:
Thanks.
Is there a way to know which carrier is locking the device? Besides trying Sims from each carrier, I mean.
Sent from my SGP611 using Tapatalk
Click to expand...
Click to collapse
No, but it is not probable that it is simlocked. It is almost 100% because you have wrong Baseband / Firmware combination. The older firmware (downgraded) does not support newer baseband you left in the device unflashed.

so I tried two different flashes including FOTA, BB and Kernel;
- D6603_23.0.A.2.93 from the original OP.
- latest firmware from xperifirm for Telcel's branded ROM; 23.4.A.0.546
in both cases, i left the entire Exception section unticked.
in both cases, after initual bootup, I still get the "Invalid Card." warning.
I'd like to start discarding possibilities.
- can flashing affect SIM lock? either way, locking or unlocking devices? My understanding is that it shouldn't. Could someone please confirm?
- is there a way with which carrier the devices is locked? The screenshot shows a [X] on network lock with a 5.
is there a way to find out that does not involve getting SIMs from every carrier?

Hobbes2099 said:
so I tried two different flashes including FOTA, BB and Kernel;
- D6603_23.0.A.2.93 from the original OP.
- latest firmware from xperifirm for Telcel's branded ROM; 23.4.A.0.546
in both cases, i left the entire Exception section unticked.
in both cases, after initual bootup, I still get the "Invalid Card." warning.
I'd like to start discarding possibilities.
- can flashing affect SIM lock? either way, locking or unlocking devices? My understanding is that it shouldn't. Could someone please confirm?
- is there a way with which carrier the devices is locked? The screenshot shows a [X] on network lock with a 5.
is there a way to find out that does not involve getting SIMs from every carrier?
Click to expand...
Click to collapse
Flash only firmware from XperiFirm. Others of unknown origin can be provider specific. However, the SIM LOCK is firmware independent.
I omitted some of your pictures. The X mark on Network means that is IS provider LOCKED and you have 5 retries to enter unlock code.

FIXED. Lost serial number // Galaxy S7 softbrick // SPRINT

I have somehow managed to lose my S/N completely from my Sprint S7. Doesn't show in Settings > system status.
Only shows IMEI and MEID info for "#*06#."
Peeled sticker off back like an idiot .
When I 'Home + vol down + pwr' then 'home' only shows MEID
So essentially- in a nutshell- I'm trying to repair my phone with Kies/SS, they are requesting my S/N and none of these numbers work. Somewhere along the way of rooting i wiped my S/N from my S7 no idea how...if anyone could be of any assistance it would greatly be appreciated!

Bnapi92 said:
I have somehow managed to lose my S/N completely from my Sprint S7. Doesn't show in Settings > system status.
Only shows IMEI and MEID info for "#*06#."
Peeled sticker off back like an idiot .
When I 'Home + vol down + pwr' then 'home' only shows MEID
So essentially- in a nutshell- I'm trying to repair my phone with Kies/SS, they are requesting my S/N and none of these numbers work. Somewhere along the way of rooting i wiped my S/N from my S7 no idea how...if anyone could be of any assistance it would greatly be appreciated!
Click to expand...
Click to collapse
Try updating the firmware with Odin and you will be fine! You can download the orig firmwares of sammobile.

Look at the backside about an inch from the bottom. You might need a magnifying glass or a loupe.

RiTCHiE007 said:
Try updating the firmware with Odin and you will be fine! You can download the orig firmwares of sammobile.
Click to expand...
Click to collapse
The most current firmware sam has is outdated right now. I updated my firmware right before so i keep getting a FAIL (AUTH) prompt in Odin...Cause you know i couldn't have made this situation more difficult . & For the numbers on the back of the phone none have worked for smart switch.

UPDATE: Phone is now soft bricked.... No idea how just does a pulsating vibrate loop upon boot.

So where im at now, phones showing an exclamation mark with the use recovery prompt. Have access to download mode. Flashing stock firmware fails through ODIN with (auth) code. No serial number to use kies or SS. The only way to get this OS stable again is through Odin with the most current firmware...which was just released like 2 days ago & I can't find ANYWHERE. otherwise this is a really expensive brick plz help!!!!!

Bnapi92 said:
So where im at now, phones showing and exclamation mark with the use recovery prompt. I have access to download mode. Flashing stock firmware fails through ODIN with (auth) code. No serial number to use kies or SS. I think the only way i can get this OS stable again is through Odin with the most current firmware...which was just released like 2 days ago & I can't find ANYWHERE. otherwise this is a really expensive brick i own plz help!!!!!
Click to expand...
Click to collapse
G930P on Sprint?
Firmware is on sammobile, and will be available with the samfirm tool too
If not G930P, which model S7?

Bnapi92 said:
So where im at now, phones showing and exclamation mark with the use recovery prompt. I have access to download mode. Flashing stock firmware fails through ODIN with (auth) code. No serial number to use kies or SS. I think the only way i can get this OS stable again is through Odin with the most current firmware...which was just released like 2 days ago & I can't find ANYWHERE. otherwise this is a really expensive brick i own plz help!!!!!
Click to expand...
Click to collapse
Well if you have a G930F then i would just download a other region firmware that is newer then yours. This should do the trick and why didnt you keep the box of the phone?

If the S/N eched on the back of the phone doesn't work with SmartSwitch, then there really is something fishy going on. Maybe the phone is blacklisted?

gerhard_wa said:
If the S/N eched on the back of the phone doesn't work with SmartSwitch, then there really is something fishy going on. Maybe the phone is blacklisted?
Click to expand...
Click to collapse
No it is because it is a sprint phone they use DEC not S/N and are not compatible with Smart switch recovery...talked to a rep lastnight stupidest thing I've ever heard.

*Detection* said:
G930P on Sprint?
Firmware is on sammobile, and will be available with the samfirm tool too
If not G930P, which model S7?
Click to expand...
Click to collapse
SM-G930P you're right but as of the other nights update i can't find the most current official firmware that ODIN will authorize.

Bnapi92 said:
SM-G930P you're right but as of the other nights update i can't find the most current official firmware that ODIN will authorize.
Click to expand...
Click to collapse
Might not be on the servers yet, takes a couple days after OTA for the full ROM to hit servers IIRC

Bnapi92 said:
No it is because it is a sprint phone they use DEC not S/N and are not compatible with Smart switch recovery...talked to a rep lastnight stupidest thing I've ever heard.
Click to expand...
Click to collapse
The MEID by DEC replaces the IMEI used in other countries. This is an individual unique identifier related to the cellular networks and is not controlled by Samsung. The Samsung serial number on the other hand is up to Samsung and this is the number you use with SmartSwitch. It could be that Sprint phones are not compatible with SmartSwitch, but this can not have anything to do with the MEID DEC being used instead of IMEI. I would think that the other US networks uses MEID DEC instead of IMEI too and so you mean that they too are incompatible with SmartSwitch?

gerhard_wa said:
The MEID by DEC replaces the IMEI used in other countries. This is an individual unique identifier related to the cellular networks and is not controlled by Samsung. The Samsung serial number on the other hand is up to Samsung and this is the number you use with SmartSwitch. It could be that Sprint phones are not compatible with SmartSwitch, but this can not have anything to do with the MEID DEC being used instead of IMEI. I would think that the other US networks uses MEID DEC instead of IMEI too and so you mean that they too are incompatible with SmartSwitch?
Click to expand...
Click to collapse
I don't mean to assume that it isn't compatible at all, but what the rep told me is that sprint does not use S/N but instead DEC & the DEC # is not compatible with smart switch. It may be compatible but from everywhere I've searched a S/N does not exist for my phone. Spoken to sprint and samsung about it...

UPDATE: further information, my phone was rooted and flashed with ODIN. everything was fine until i went through the steps to re enable my service. i disable a couple things in buildprop.editor, restarted my phone and got stuck in a boot loop. I can access recovery but i flashed twrp so it's custom.

UPDATE: I have gotten the firmware information from sprint. I need the G930PVPS4APJ2 firmware. If anyone can be of assistance with this it isn't available on sam yet.

Bnapi92 said:
UPDATE: I have gotten the firmware information from sprint. I need the G930PVPS4APJ2 firmware. If anyone can be of assistance with this it isn't available on sam yet.
Click to expand...
Click to collapse
Keep checking the samfirm tool, it knows it's ready and displays G930PVPS4APJ2 but with binary error, which usually means soon, just need to check each day

*Detection* said:
Keep checking the samfirm tool, it knows it's ready and displays G930PVPS4APJ2 but with binary error, which usually means soon, just need to check each day
Click to expand...
Click to collapse
Could you link me to where its displayed?

Bnapi92 said:
Could you link me to where its displayed?
Click to expand...
Click to collapse
Looks like it's live on the servers today, go get it
Set up SamFirm like 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"
}

*Detection* said:
Looks like it's live on the servers today, go get it
Set up SamFirm like this
Click to expand...
Click to collapse
I love you, Super thanks!

Samsung SM-G930S... all the same as

I have a Samsung SM-G930S... which is Exynos 8890.
Can I then put on any ROM from any other Exynos 8890 based phone? And all will be well?

All will be well if you enjoy a brick
Only flash stock ROMs for your model S7 (G930S)
Bootloaders etc are different between models, it doesn't just depend on the chipset

JeffDC said:
I have a Samsung SM-G930S... which is Exynos 8890.
Can I then put on any ROM from any other Exynos 8890 based phone? And all will be well?
Click to expand...
Click to collapse
If custom roms, then yes. I have a G930L. Same korean variant as S & K.

012512 said:
If custom roms, then yes. I have a G930L. Same korean variant as S & K.
Click to expand...
Click to collapse
So then you stick to L, S and K supported custom ROMS? ...
I see quite a few custom ROMs for the G930F version but that would unsupported/dangerous?

JeffDC said:
I have a Samsung SM-G930S... which is Exynos 8890.
Can I then put on any ROM from any other Exynos 8890 based phone? And all will be well?
Click to expand...
Click to collapse
JeffDC said:
So then you stick to L, S and K supported custom ROMS? ...
I see quite a few custom ROMs for the G930F version but that would unsupported/dangerous?
Click to expand...
Click to collapse
That would be fine. Example custom rom for korean variants are superman rom, superstock rom. I'm currently using superman rom

012512 said:
That would be fine. Example custom rom for korean variants are superman rom, superstock rom. I'm currently using superman rom
Click to expand...
Click to collapse
012512, thank you for your answer. I will look up those two ROMS. This rooting of the Samsung phones seems a bit more complicated than the last time I was rooting, the LG-G3 and the OnePlus One, or is it my imagination.... or just getting more-forgetful?
When you look for ROM's compatible for your phone, are you looking specifically that they are for the SM-G930S, or exactly what are you looking for? Other non-Korean variants that will work?
Thanks again.

JeffDC said:
012512, thank you for your answer. I will look up those two ROMS. This rooting of the Samsung phones seems a bit more complicated than the last time I was rooting, the LG-G3 and the OnePlus One, or is it my imagination.... or just getting more-forgetful?
When you look for ROM's compatible for your phone, are you looking specifically that they are for the SM-G930S, or exactly what are you looking for? Other non-Korean variants that will work?
Thanks again.
Click to expand...
Click to collapse
Any custom tw roms will be fine. Take note that aosp roms are no longer supported for korean variants.
S7 korean variants are g93xK/L/S
So if you install a g930/5F custom tw rom, you can install it on your phone as long as you don't install the stock g93xF/FD roms.
Also, there is a separate twrp for korean variants in order to install a custom tw roms. Please refer "heroltekor" twrp.
---------- Post added at 08:27 PM ---------- Previous post was at 08:21 PM ----------
Example supported rom for korean variants:
[ROM][STABLE][N][7.0][DQIC][03.10.17][SM-G930F/FD/K/L/S/W8] SuperMan-Rom V2.7.0
{
"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"
}

Excellent information, thank you. By trial and error, before picking up your post, I put on an Exynos Infinity 8+ from v8. It seemed to flash fine using the default Bixby CSC indicated in the setup. I did this last night so have not had time to chck out all things, however, cell phone, messaging, bluetooth all work just fine. I'm about to clean install the v17 of the Infinity in a few minutes. TWRP is a a** saver and my friend.
Thank you, again.
Jeff

JeffDC said:
Excellent information, thank you. By trial and error, before picking up your post, I put on an Exynos Infinity 8+ from v8. It seemed to flash fine using the default Bixby CSC indicated in the setup. I did this last night so have not had time to chck out all things, however, cell phone, messaging, bluetooth all work just fine. I'm about to clean install the v17 of the Infinity in a few minutes. TWRP is a a** saver and my friend.
Thank you, again.
Jeff
Click to expand...
Click to collapse
Hi,
I bought Samsung Galaxy S7 SM-G930S from the store which was converted into SM-G930FD as I was not having Korean sick apps installed in my mobile and there was no Korean logo of "BANDLTE" while switching off and switching on, when I saw my phone model name it was SM-G930FD and was supporting dual sim both had a same IMEI. But when I restarted my mobile after getting home phone got locked with this message "Custom Binary Blocked By FRP Lock" so decided to got into boot menu there I saw SMG930S written so i flashed mobile with SKT Korean firmware of smg930s but when I installed it I got tons of Korean apps and getting "BANDLTE" logo while switching off and on my phone I lost that Samsung Original logo which I had when my phone was converted into smg930fd. Now I want to switch back to Smg930fd settings/firmware so get rid of these Korean apps and Model to be appear as SMG930FD as the back of my Samsung Galaxy s7 glass has a phone model SMG930FD. I don't know Shopkeeper scammed me or what I told him I wanted to buy SMG930FD but he gave me this converted phone Kindly help me to get back to SMG930FD firmware/settings

shazmobile said:
Hi,
I bought Samsung Galaxy S7 SM-G930S from the store which was converted into SM-G930FD as I was not having Korean sick apps installed in my mobile and there was no Korean logo of "BANDLTE" while switching off and switching on, when I saw my phone model name it was SM-G930FD and was supporting dual sim both had a same IMEI. But when I restarted my mobile after getting home phone got locked with this message "Custom Binary Blocked By FRP Lock" so decided to got into boot menu there I saw SMG930S written so i flashed mobile with SKT Korean firmware of smg930s but when I installed it I got tons of Korean apps and getting "BANDLTE" logo while switching off and on my phone I lost that Samsung Original logo which I had when my phone was converted into smg930fd. Now I want to switch back to Smg930fd settings/firmware so get rid of these Korean apps and Model to be appear as SMG930FD as the back of my Samsung Galaxy s7 glass has a phone model SMG930FD. I don't know Shopkeeper scammed me or what I told him I wanted to buy SMG930FD but he gave me this converted phone Kindly help me to get back to SMG930FD firmware/settings
Click to expand...
Click to collapse
Same case for me, one thing different is that i bought the phone used from some random guy on the internet, i tried OTA to get Oreo as the phone had Nougat but it says no update available for me, 4G didn't work on my netword too, then when i saw samsung health not working i thought knox probably is voided when i checked odin i found its a 930S instead of the FD.
I do believe there is ways to convert to the 930F/FD by flashing select flash, using a box/dongle or some paid tool like R3 or Chimera or whatever you can get your hands on. I work on a repair workshop, have those i mentioned above and i saw this feature where you can actually select which part you wanna flash from a specified md5 file, i didn't test it on any phone yet, but i think they flash the bootloader of the real variant 930X but they put the AP of the international version 930F/FD, from the AP file you can also select what to flash and what to not, so you can actually only flash system.img of the XXXF version and the rest can be from the original variant. Never tested it but i think that's how it works.
My advice is to return the phone, that's what i'm going to do as i just bought it today (i was a happy dumbea** already bought few cases and whatnot...) the phone is still good and all functions perfectly, 4G might not work on some networks due to the different bands but everything else is the same! there is a big chance you can get the international firmware on it and be happy with it, but there is always a chance of breaking it too! or getting a network lock which i guarantee you, you're not going to like...
I don't know if this type of phones is refurbished, but i really hate that Samsung actually does that or allow this to be possible (happened before with an S6), same goes for LG too (Had a v10 korean model with Tmobile firmware).
Again, my advice, return it!!

Okay so here is an update on my case, might help anyone. if you did read my previous reply you'll know that i bought the phone from someone online, contacted him back he didn't block me nor ignore me, he even called me himself, but he bought a ps4 with my money and can't go back. Still waiting to see if he can get the money back, but what i was thinking is to ask for few dollars back just cause 4g network and dual sim functionality doesn't work on the phone, again its a 930S with 930FD firmware, after confirming and playing around its actually 930F not FD so i think i can get back the dual sim function. I'll be flashing the phone if i got no money back, try to get FD or 4G working on it and sell it for maximum price, then use the extra money i'll take from him to sorta re-gain my money and try to find a better one.
If i ended up flashing this 930S to a 930F or FD i'll post the method and the result and link it in another reply for anyone interested.
Wish me luck.

Salazar33 said:
Okay so here is an update on my case, might help anyone. if you did read my previous reply you'll know that i bought the phone from someone online, contacted him back he didn't block me nor ignore me, he even called me himself, but he bought a ps4 with my money and can't go back. Still waiting to see if he can get the money back, but what i was thinking is to ask for few dollars back just cause 4g network and dual sim functionality doesn't work on the phone, again its a 930S with 930FD firmware, after confirming and playing around its actually 930F not FD so i think i can get back the dual sim function. I'll be flashing the phone if i got no money back, try to get FD or 4G working on it and sell it for maximum price, then use the extra money i'll take from him to sorta re-gain my money and try to find a better one.
If i ended up flashing this 930S to a 930F or FD i'll post the method and the result and link it in another reply for anyone interested.
Wish me luck.
Click to expand...
Click to collapse
Bro I found a way you can download custom rom of smg930fd by installing TWRP or CF auto root method in this way your model will I guess automatically turn into dual sim supported and model will be shown as smg930fd.

I also have a 930S. How to >Bro I found a way you can download custom rom of smg930fd by installing TWRP or CF auto root method in this way your model will I guess automatically turn into dual sim supported and model will be shown as smg930fd.<

shazmobile said:
Bro I found a way you can download custom rom of smg930fd by installing TWRP or CF auto root method in this way your model will I guess automatically turn into dual sim supported and model will be shown as smg930fd.
Click to expand...
Click to collapse
Hi,
I'm facing the same situation. I bought G930FD dual sim but later I found that it's actually G930S.
Now I want to install its stock firmware which is Android 8.0 by SK Telecom, Korea
Can you please tell me:
1. Changing the ROM will covert the phone into Single SIM version?
2. The phone will lock to Korean network only?
3. This will change everything into Korean?
Cheers

[email protected] said:
Hi,
I'm facing the same situation. I bought G930FD dual sim but later I found that it's actually G930S.
Now I want to install its stock firmware which is Android 8.0 by SK Telecom, Korea
Can you please tell me:
1. Changing the ROM will covert the phone into Single SIM version?
2. The phone will lock to Korean network only?
3. This will change everything into Korean?
Cheers
Click to expand...
Click to collapse
1. Yes it will!
2. This one depends if your phone is unlocked or not, most of the time it is unlocked.
3. The firmware is all the same Korean, US, Canada or international the biggest difference will be in bloatwares, as I had that phone before I can tell you, you'll have many SK telecom apps.
4. (this one I added) If you flash your phone with the original Korean firmware which is by downloading the firmware for the S7 SM-G930s from Sammobile and flashing it using ODIN, going back is quite hard! So if you're network locked or you want the dual sim functionality back, you'll need a special tool/dungle called Z3x to make the thing work!
5. (I also added this) To unlock the phone and make it work on all networks there is a process called "Patching the certificate" and it requires an unlocked bootloader which probably you already have, and root! and most importantly! it only works on Android Nougat. Basically what Im saying you can only have dual sim function in Android Nougat with the 930FD firmware, also if you flash the original firmware and its network locked, if you wanna go back you'll need that tool I mentioned and again, only Android Nougat.
Had that phone before, still have the firmware backup for the 930StoFD also. I can help if needed.

Salazar33 said:
1. Yes it will!
2. This one depends if your phone is unlocked or not, most of the time it is unlocked.
3. The firmware is all the same Korean, US, Canada or international the biggest difference will be in bloatwares, as I had that phone before I can tell you, you'll have many SK telecom apps.
4. (this one I added) If you flash your phone with the original Korean firmware which is by downloading the firmware for the S7 SM-G930s from Sammobile and flashing it using ODIN, going back is quite hard! So if you're network locked or you want the dual sim functionality back, you'll need a special tool/dungle called Z3x to make the thing work!
5. (I also added this) To unlock the phone and make it work on all networks there is a process called "Patching the certificate" and it requires an unlocked bootloader which probably you already have, and root! and most importantly! it only works on Android Nougat. Basically what Im saying you can only have dual sim function in Android Nougat with the 930FD firmware, also if you flash the original firmware and its network locked, if you wanna go back you'll need that tool I mentioned and again, only Android Nougat.
Had that phone before, still have the firmware backup for the 930StoFD also. I can help if needed.
Click to expand...
Click to collapse
Thanks a lot mate for such a detailed reply
---------- Post added at 07:02 PM ---------- Previous post was at 06:29 PM ----------
Salazar33 said:
1. Yes it will!
2. This one depends if your phone is unlocked or not, most of the time it is unlocked.
3. The firmware is all the same Korean, US, Canada or international the biggest difference will be in bloatwares, as I had that phone before I can tell you, you'll have many SK telecom apps.
4. (this one I added) If you flash your phone with the original Korean firmware which is by downloading the firmware for the S7 SM-G930s from Sammobile and flashing it using ODIN, going back is quite hard! So if you're network locked or you want the dual sim functionality back, you'll need a special tool/dungle called Z3x to make the thing work!
5. (I also added this) To unlock the phone and make it work on all networks there is a process called "Patching the certificate" and it requires an unlocked bootloader which probably you already have, and root! and most importantly! it only works on Android Nougat. Basically what Im saying you can only have dual sim function in Android Nougat with the 930FD firmware, also if you flash the original firmware and its network locked, if you wanna go back you'll need that tool I mentioned and again, only Android Nougat.
Had that phone before, still have the firmware backup for the 930StoFD also. I can help if needed.
Click to expand...
Click to collapse
Thank you for such a detailed answer.
Now I'm confused to select a blue pill or red one
At one hand the current OS is outdated and have a very annoying and UN-stopable adware buit-in; but it's dual SIM
and on the other hand I may have an updated and ad-free OS by sacrificing dual SIM functionality

[email protected] said:
Thanks a lot mate for such a detailed reply
---------- Post added at 07:02 PM ---------- Previous post was at 06:29 PM ----------
Thank you for such a detailed answer.
Now I'm confused to select a blue pill or red one
At one hand the current OS is outdated and have a very annoying and UN-stopable adware buit-in; but it's dual SIM
and on the other hand I may have an updated and ad-free OS by sacrificing dual SIM functionality
Click to expand...
Click to collapse
What you can do is install TWRP recovery, you can download it from "twrp.me/Devices" and look for your specific device, backup everything and transfer it to a PC or a memory card, just in case you'd like to go back later, then you can flash the original firmware with Android Oreo and see if you like it more and if its worth dropping the dual sim for! if you don't like it, you just reFlash TWRP as it will be erased, format the partitions and restore the backup, You'll be back with Nougat and dual sim function but the network won't work till you patch the certificate (used to be called repair network), and for that you'll need root, debug enabled, and the z3x. Your issue will probably be that last one, z3x, cause as far as I know you'll need this tool or a similar one to get the network to work again! and just to mention, for some reason, if you erase the dalvik cache or reset the phone, you'll have to patch the certificate again.
Just think it through carefully, I work in a repair shop so I got access to lots of tools, but in your case if you don't, it might be quite hard to get things working again if they break.

Salazar33 said:
What you can do is install TWRP recovery, you can download it from "twrp.me/Devices" and look for your specific device, backup everything and transfer it to a PC or a memory card, just in case you'd like to go back later, then you can flash the original firmware with Android Oreo and see if you like it more and if its worth dropping the dual sim for! if you don't like it, you just reFlash TWRP as it will be erased, format the partitions and restore the backup, You'll be back with Nougat and dual sim function but the network won't work till you patch the certificate (used to be called repair network), and for that you'll need root, debug enabled, and the z3x. Your issue will probably be that last one, z3x, cause as far as I know you'll need this tool or a similar one to get the network to work again! and just to mention, for some reason, if you erase the dalvik cache or reset the phone, you'll have to patch the certificate again.
Just think it through carefully, I work in a repair shop so I got access to lots of tools, but in your case if you don't, it might be quite hard to get things working again if they break.
Click to expand...
Click to collapse
I simply flashed my device using Odin.
These is no more dual SIM functionality but I'm happy to have a latest firmware for S7 and I'm fee from the ads now.

[email protected] said:
I simply flashed my device using Odin.
These is no more dual SIM functionality but I'm happy to have a latest firmware for S7 and I'm fee from the ads now.
Click to expand...
Click to collapse
Happy to hear the issue is solved.
Couple of things you can try for a better experience if you like modding and tweaking.
If you have root and magisk, you can install a module that enhance your camera, it will increase the quality and add some extra features (I just installed it three days ago on my S8+, and the S7 is also supported, love it)
You can install a sound mod that gives you stereo like sound by using the earpeace and the bottom speak together.
Also with root you can patch your host file (Luckypatcher can do that) to block like 99% of the ads within the apps (I can't live without this one, life saver)
And can find tons more withing the forums, these are the ones I tried myself.

[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?
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Galaxy S7 Verizon phone unlocked

I bought a refurbished phone off ebay with the Verizon logo on it but unlocked version of android without Verizon software and wifi calling. Was phones sold new with the Verizon logo and unlocked version of android? Does the GS7 have wifi calling for Verizon? I can't find the option in the settings. My G6 has wifi calling.

To my best knowledge only the G930U (non carrier) comes from the factory unlocked, if yours is Verizon (G930V) it would have sold new as locked on Verizons firmware, and someone has unlocked it afterwards.
They should have VoLTE and VoWIFI, you just need to make sure your carriers CSC is flashed on the device. If it's refurbished unlocked it's probably on unlocked CSC so won't have any carrier features.
Try getting the latest firmware package for your carrier from sammobile.com or updato.com, and flash ONLY the home_csc via Odin.
All US models are the same SoC, so even if your phone is the Verizon version, you can flash any other carriers firmware.

Beanvee7 said:
To my best knowledge only the G930U (non carrier) comes from the factory unlocked, if yours is Verizon (G930V) it would have sold new as locked on Verizons firmware, and someone has unlocked it afterwards.
They should have VoLTE and VoWIFI, you just need to make sure your carriers CSC is flashed on the device. If it's refurbished unlocked it's probably on unlocked CSC so won't have any carrier features.
Try getting the latest firmware package for your carrier from sammobile.com or updato.com, and flash ONLY the home_csc via Odin.
All US models are the same SoC, so even if your phone is the Verizon version, you can flash any other carriers firmware.
Click to expand...
Click to collapse
Thanks. I have another question. Will the unlocked version be better to have and will it get Oreo sooner then the Verizon version?
I haven't flashed a firmware before. have some links bookmarked for doing this to this phone. I guess i would have to reset my phone and reinstall everything.

I would expect the unlocked version to release first since the firmware doesn't have to go through carriers own changes and verification, but that's only a guess.
But since the SoC is the same, you could technically flash the Oreo firmware from whichever phone gets it first, you'd just have to put up with the carriers bloatware.
There's a good flash guide on updato.com for Odin, from memory if you flash all files using home_csc and it's the same version or newer it doesn't wipe. But I've never tried it that way myself.

here's what my about phone screen shows. Would that be stock or flashed by the seller or whomever? It shows my phone its the U version instead out the V version.
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Sent from my SM-G930U using Tapatalk

Boot into download mode and check, the phone information page will be wrong if the phone is flashed with firmware that's different to its stock.

Beanvee7 said:
I would expect the unlocked version to release first since the firmware doesn't have to go through carriers own changes and verification, but that's only a guess.
But since the SoC is the same, you could technically flash the Oreo firmware from whichever phone gets it first, you'd just have to put up with the carriers bloatware.
There's a good flash guide on updato.com for Odin, from memory if you flash all files using home_csc and it's the same version or newer it doesn't wipe. But I've never tried it that way myself.
Click to expand...
Click to collapse
I finally tried to flash the files and using home_csc but it still says 930U and the software is still the BRC1 not the BRC3 and the settings menu isn't the verizon style. I'm not sure what changed. the flash was successful though.

You might find the stock CSC needs to be flashed for those changes, since it triggers a full wipe. I'm not sure the model would change either way.
So long as you get the functionality you want you should be fine.

Beanvee7 said:
You might find the stock CSC needs to be flashed for those changes, since it triggers a full wipe. I'm not sure the model would change either way.
So long as you get the functionality you want you should be fine.
Click to expand...
Click to collapse
It has VOLTE enabled in the settings. is that HD Voice for Verizon?

Yep, from their faq:
"HD Voice is a suite of services enabled by VoLTE (Voice over LTE) technology. VoLTE delivers voice calls over the 4G LTE network instead of the traditional voice network, providing clearer, more natural sounding audio when both parties are using HD Voice-enabled phones that are connected to our 4G LTE network."

Beanvee7 said:
Yep, from their faq:
"HD Voice is a suite of services enabled by VoLTE (Voice over LTE) technology. VoLTE delivers voice calls over the 4G LTE network instead of the traditional voice network, providing clearer, more natural sounding audio when both parties are using HD Voice-enabled phones that are connected to our 4G LTE network."
Click to expand...
Click to collapse
I can't remember if the setting was there before. Does all the unlocked versions have that feature? I don't think i had it before because my phone signal is weak and mom says I cut out when i move around.

I believe it's only there if you have the CSC of a carrier that has it enabled, it's not there on mine at all for example. But I have a G930F which is international, different SoC and firmware.

Beanvee7 said:
I believe it's only there if you have the CSC of a carrier that has it enabled, it's not there on mine at all for example. But I have a G930F which is international, different SoC and firmware.
Click to expand...
Click to collapse
Wait I got confused. I was thinking of wifi calling when i was posting last night. I made a phone call today and it was waiting for a good signal before dialing. Any ideas? I was hoping to use wifi calling since i get a weak signal with this phone. my LG G6 got a stronger signal in the same spot at the computer desk then this GS7. The G6 has wifi calling in the settings but not this phone.

https://devices.vodafone.com.au/web...ons/making-calls/turn-wi-fi-calling-on-or-off
https://www.verizonwireless.com/support/knowledge-base-203686/
Since I don't have the option myself I can't tell you where the setting should be, but these might help. They're technically different services, so are enabled separately.

Beanvee7 said:
https://devices.vodafone.com.au/web...ons/making-calls/turn-wi-fi-calling-on-or-off
https://www.verizonwireless.com/support/knowledge-base-203686/
Since I don't have the option myself I can't tell you where the setting should be, but these might help. They're technically different services, so are enabled separately.
Click to expand...
Click to collapse
Since I'm on the unlocked version I don't have the Verizon style setup menu so I can't find it. I don't see Wifi calling in the settings at all. I do find a Smart Network Switch in the advanced settings for the Wifi. is that the same as Wifi calling?

(fixed S7 typo)
railfan-eric said:
Since I'm on the unlocked version I don't have the Verizon style setup menu so I can't find it. I don't see Wifi calling in the settings at all. I do find a Smart Network Switch in the advanced settings for the Wifi. is that the same as Wifi calling?
Click to expand...
Click to collapse
You will need to flash the Verizon version of the stock firmware (SM-G930V) in order to get VoLTE and WiFi calling on Verizon's network. Every carrier is different, and this is usually one of those features that require their own firmware build in order to get it to work. If you have the Unlocked version (SM-G930U) then Wifi call may work on other carrier's networks, but it won't work on Verizon.
I'm currently using a Verizon purchased S7, that I flashed to the Unlocked version SM-G930U. Wifi calling works for me because I'm on T-Mobile's network (with Mint Mobile). If I inserted a Verizon SIM then I wouldn't be able to use their Wifi calling without flashing the firmware back.

quasihellfish said:
You will need to flash the Verizon version of the stock firmware (SM-G930V) in order to get VoLTE and WiFi calling on Verizon's network. Every carrier is different, and this is usually one of those features that require their own firmware build in order to get it to work. If you have the Unlocked version (SM-G930U) then Wifi call may work on other carrier's networks, but it won't work on Verizon.
I'm currently using a Verizon purchased G7, that I flashed to the Unlocked version SM-G930U. Wifi calling works for me because I'm on T-Mobile's network (with Mint Mobile). If I inserted a Verizon SIM then I wouldn't be able to use their Wifi calling without flashing the firmware back.
Click to expand...
Click to collapse
I just flashed it with the verizon firmware using the CSC instead of the home_csc and it erased everything installed everything but it's still the 930U and nothing in the settings looks like the verizon model. what did i do wrong? looks like i unzipped the wrong one. dang it i have to do it again. rats. i unzipped the u version by accident.

railfan-eric said:
I just flashed it with the verizon firmware using the CSC instead of the home_csc and it erased everything installed everything but it's still the 930U and nothing in the settings looks like the verizon model. what did i do wrong? looks like i unzipped the wrong one. dang it i have to do it again. rats. i unzipped the u version by accident.
Click to expand...
Click to collapse
trying to flash it with the verizon rom and i get a ext4 failed each time i try. i am using the home_csc. what am i doing wrong?
update: i tried again with the CSC and that worked. just booted up with the verizon logo so i got it!!! this is my first time to flash roms. i never done it before. too scared and not enough need. but now i know how. can't wait to flash with oreo if it comes sooner then the OTA.

railfan-eric said:
trying to flash it with the verizon rom and i get a ext4 failed each time i try. i am using the home_csc. what am i doing wrong?
update: i tried again with the CSC and that worked. just booted up with the verizon logo so i got it!!! this is my first time to flash roms. i never done it before. too scared and not enough need. but now i know how. can't wait to flash with oreo if it comes sooner then the OTA.
Click to expand...
Click to collapse
Congrats. But FYI, the only reason you were able to do it so easily is because you were flashing a "Stock" firmware, direct from Samsung and signed by them. You can flash any US stock firmware on any other US model of the Galaxy S7 (the Qualcomm version). So it's really hard to mess up. Flashing any of the "custom" roms in the other threads is an entirely different animal, and not something I personally recommend unless you are truly motivated and know what you are looking for. Lots of opportunity for error, and requires workarounds.
The point I'm getting at is you'll likely get the official OTA update around the same time you would find a version that you would flash, because they come from the same source, and are the exact same files.

Beanvee7 said:
I would expect the unlocked version to release first since the firmware doesn't have to go through carriers own changes and verification, but that's only a guess.
But since the SoC is the same, you could technically flash the Oreo firmware from whichever phone gets it first, you'd just have to put up with the carriers bloatware.
There's a good flash guide on updato.com for Odin, from memory if you flash all files using home_csc and it's the same version or newer it doesn't wipe. But I've never tried it that way myself.
Click to expand...
Click to collapse
Greetings Sir. Can I root My SM-G930V?? Baseband G930VVRSBCTC1??