Database Users

S7edge SM-G9350-NO 4G DATA**I WILL DONATE $50-$100 TO WHOEVER GIVES ME THE SOLUTION**

The exact model is Samsung Galaxy S7 edge SM-G9350 64 GB GOLD PLATINUM
First I want to get this off my chest. I registered this week (I used XDA before like 7 or 8 years ago in high school when I use to flash custom ROMS on windows mobile phones-good times hehe)because I am frustrated since I bought an unlocked Samsung Galaxy S7 edge from a stranger using craigslist on Sunday night. The ad said it was T-mobile Unlocked and in brand new condition with the box and original accessories and it had some pictures.So why not buy it cheap for since I'm using a T-mobile LG-K7 with a cracked screen,right?WRONG!! The phone is working fine except I am only getting EDGE data!!! I found out that it is a chinese variant and it works fine with my T-mobile sim card here in the U.S.A except it can't connect to 4G and that is probably why the shady guy sold the phone cheap to let it become someone else problem I also saw 1 or 2 of these models in the box as well and he said a friend gave it to him and he is just selling it(B.S.) I forgot craigslist had scammer like 40% of the transactions lol, I use to meet these types of people in middle and high school when I bought and sold my used or old T-mobile phones though I never scammed or conned any one.I remember some people would act shady or too nice for no reason,probably cause they stole the phone and were making 100% profit off me.This same guy is one of them.
ANYWAYS THANK YOU FOR READING MY RANT---- NOW ON TO THE POINT OF FIXING THE DATA ISSUE
I am getting unlimited 4G on my k7 and everyone else on our plan is using unlimited 4g just fine.Samsung rep at best buy said its legit and its an international chinese variant and to look around on here to fix the issue. He told me something about the band and t-mobile towers to pick up the frequency. He said I got a really good deal if I can 4g on there. If not than re-sell it and make it someone elses problem. I looked all around google the past few days an either no one has this problem or if they do than the solution doesn't work on my phone.
Here is what I tried so far:
A) T-mobile reset the network connection via tech support
B) I factory reset the phone numerous times
C)I got the right APN settings set on the phone to be connected to nearest towers, a store rep did it for me to make sure.
D) I replaced and used another activated T-mobile sim card
E) I download some apps I saw on here to check LTE signal etc and its running very slow edge
*********I am on the sim status screen and right now as I'm typing this the signal strength is
-61 dBm 26 asu,cellular network type is EDGE,NETWORK is T-mobile, Service state is In service,Roaming is not roaming,cellular network state is disconnected*******
------I hope someone can pick up information off of that and maybe I could change some settings
E) I dialed *#*#4636#*#* and got to a screen to allow me to check phone information,battery information,usage statistics,wi-fi information-under phone information there are options to set preferred network types to: WCGMA,GSM, GSM auto(PRL), CDMA auto(PRL),CDMA only,EvDo only,GSM/CDMA auto(PRL),LTE/CDMA auto(PRL),LTE/GSM(PRL),CDMA auto(PRL),LTE only,Unknown. It will only stay on up to GSM auto(PRL)
....also when I press menu on this screen there is an option to enable data connection and when I click it,it won't stay,it just keeps saying enable data connection
F)I googled what bands this model and it is able to use and it has the capability to be used on T-mobile bands
What else can I do get the data working to 4G right now? The phone is running Android 6.0.1 and won't update to Nouget over the air. I want to root the phone and see if I can install a custom Nouget rom( since the samsung guy said the phone will brick if I try to install the T-mobile Nouget rom or I can't even do it since its an international variant-by the way I am able to have google services on here like play store,etc. so I don't know if that makes a difference to what variant and rom it is because I heard one or the other of hong kong or open china variants for this phone is better and can't use google play)and maybe I am able to connect to 4G data.
Like the title of this post says, I promise I will back up my donation I really don't want to sell the phone unless I have to because I will not get a better deal anywhere ever again for the latest high end phone from a manufacturer

Quick search gives this https://forum.xda-developers.com/s7...g9350-nougat-final-hkrom-alpha-02-18-t3558844
Sent from my SM-G935V using Tapatalk

you have to flash the correct CSC this will fix your 4G if you buy an device from a other country than is it possible that you get this problem but when you flash the correct CSC you will get 4G i helped so much people with this problem with a S7 device, i think this your solution
if this fix works for you just keep your money we are developers not for paying

Maybe you should post this in the T-Mobile section.
In my idea this should have 4G data on T-Mobile US out of the box as the required LTE bands are supported by the G9350. Did you check the APN settings? (VoLTE and WiFi-Calling may or will not work without t-mo-rom but that's another topic)
Also you should be fine to flash a T-Mobile US rom as both have Snapdragon SoC. You don't need root to flash an official rom.
Out of curiosity: what about 3G?

rientkill1 said:
you have to flash the correct CSC this will fix your 4G if you buy an device from a other country than is it possible that you get this problem but when you flash the correct CSC you will get 4G i helped so much people with this problem with a S7 device, i think this your solution
if this fix works for you just keep your money we are developers not for paying
Click to expand...
Click to collapse
Thank you so much!!! People have actually asked through pm to donate to bitcoin first before helping me and here you are helping me first by the way.
I am going to find the correct CSC, what does that stand for? Can I flash a T-mobile 7.0 Nougat rom on my Galaxy SM-9350 first that the person before you replied about(its the link)?? I want to do both to have T-mobile settings and to use the 4G although the 4G is a thousand times more important. If I can do this than I am a happy man!
Why is there a boot loader and modem link attached to every post containing a ROM download? Does that need to be downloaded first,and what are the next steps,if so? I know these are questions I need to search about they are all confusing and mumbled and jumbled up. Even though I registered this week for help I was a member here like 8-9 years ago in high school when I was flashing custom ROMS on Windows mobile phones(good times hehe) but it got addictive,took a lot of my time from studying, and I totally forgot how do things.

andiling said:
Maybe you should post this in the T-Mobile section.
In my idea this should have 4G data on T-Mobile US out of the box as the required LTE bands are supported by the G9350. Did you check the APN settings? (VoLTE and WiFi-Calling may or will not work without t-mo-rom but that's another topic)
Also you should be fine to flash a T-Mobile US rom as both have Snapdragon SoC. You don't need root to flash an official rom.
Out of curiosity: what about 3G?
Click to expand...
Click to collapse
Hey I made a new thread today in Q&A for GS7. The APN settings were put in by a T-mobile store associate and it still didn't work. I don't care about VoLTE/Wifi-Calling although I noticed some people on here are worred about that-its just something I never use.
Are you sure I don't need root to flash an official ROM?The Samsung Galaxy guy at Best Buy said it would brick if I used an official ROM because the phone is an international variant. If I can use an official ROM,I can't get Nougut OTA via T-mobile anyway as my phone keeps saying it is updated even though it is 6.0.1. How do I get the offical ROM manually on the computer? Samsung Smart Switch isn't even recognizing my device when it is connected and Smart Switch on my phone looks like it is only suppose to be used to receive files from another phone? I have the link for a T-mobile 7.0 ROM from a post on here that he used on the same exact model I don't know if I am suppose to root the device first or not yet since it looks custom made.
Thank You for helping me out it means a lot you guys are the best! I can already see myself on here a lot in the future doing stuff different android phones like I 8 or 9 years ago in high school on windows mobile phones.

andiling said:
Maybe you should post this in the T-Mobile section.
In my idea this should have 4G data on T-Mobile US out of the box as the required LTE bands are supported by the G9350. Did you check the APN settings? (VoLTE and WiFi-Calling may or will not work without t-mo-rom but that's another topic)
Also you should be fine to flash a T-Mobile US rom as both have Snapdragon SoC. You don't need root to flash an official rom.
Out of curiosity: what about 3G?
Click to expand...
Click to collapse
The only data I am getting is EDGE

So, I guess something is wrong.
You can try flashing the designated firmware for this device first and see if this helps. To get the right one (who knows what all was tampered with) use best the Phone Info tool.

I've had this exact issue before, with a Nexus 5 that I bought from Telus, I am with Telus, it ended up being I had to go buy and register a new SIM card, then it was fine, might not be a solution for you but Worth a try,
Actually get a SIM card from your provider, have them register it in the store
Sent from my SM-G935W8 using XDA-Developers Legacy app

Thanks I did that yesterday already and it still didn't work
I am a member because the owner hates the Iphone and I respect that

What would be the correct CSC file for this device? I tried to flash CSC from a SM-G935t firmware and it didn't work even though she said it didn't matter lol(senior member too)
I am a member because the owner hates the Iphone and I respect that

I'm going to try to find an official U.S. T-mobile ROM and flash with odin...but does it have to be specifically for SM-G9350? I don't think I can find one for that......
I am a member because the owner hates the Iphone and I respect that

1) Download this https://dl.twrp.me/hero2lte/twrp-3.1.0-0-hero2lte.img.tar.html and WAIT.
2) Download superman ROM: https://www.androidfilehost.com/?fid=817550096634750162
I choosed this rom cause it got nougat bootloader and kernel. Also download CSC chooser zip: https://www.androidfilehost.com/?fid=745425885120710484
3) Install twrp via ODIN and uncheck auto reset in odin. Then press power + home + volup to go to recovery. Put the superman rom and CSC chooser zip files on Sd card and put back in phone.
4) Install Superman rom,in aroma pick superstock kernel 'samsung pay and knox work' and install/update everything especially the bootloader. In mods stick to stock as possible.
5) Install the CSC zip file and choose t-mobile USA.
6) reboot and pray everything works LOL
I'm not responsible for any damage that might occur but if ir worked donations are welcome to help a medical student here

modaifallah said:
1) Download this https://dl.twrp.me/hero2lte/twrp-3.1.0-0-hero2lte.img.tar.html and WAIT.
2) Download superman ROM: https://www.androidfilehost.com/?fid=817550096634750162
I choosed this rom cause it got nougat bootloader and kernel. Also download CSC chooser zip: https://www.androidfilehost.com/?fid=745425885120710484
3) Install twrp via ODIN and uncheck auto reset in odin. Then press power + home + volup to go to recovery. Put the superman rom and CSC chooser zip files on Sd card and put back in phone.
4) Install Superman rom,in aroma pick superstock kernel 'samsung pay and knox work' and install/update everything especially the bootloader. In mods stick to stock as possible.
5) Install the CSC zip file and choose t-mobile USA.
6) reboot and pray everything works LOL
I'm not responsible for any damage that might occur but if ir worked donations are welcome to help a medical student here
Click to expand...
Click to collapse
Nice, I like what you have! My model is different so I don't know if the ROM will work though I'm almost finished downloading it at the moment. Instructions 3 and 4 is confusing. Don't I need to put superman ROM and CSC file on sd card while the phone is ON?And am I suppose to transfer it on there via usb cable or can I also do it via google drive than open in up phone gmail and put it on sd card? Also do I need to extract the CSC file first to my computer desktop? That file takes forever to extract! Is instruction 4 suppose to be while in recovery mode? Also is it normal for my phone to show "no command" while in recovery mode?

Thank you ?
The rom will work because your phone is exynos based. It got a different model number because it's for Chinese markets. Put the rom on the SD card using whatever method, just do it before flashing the recovery, because your phone may not boot after the recovery to the stock firmware because Samsung has put some crap to prevent using custom firmware. I forgot to say that also before doing anything go to device info - > software - > and press build number several times to enable developer options then back to settings and go to developer options and enable OEM unlocking.
Yes, commands 4 are made in recovery. Install - > pick the zip file and install.
All zip files aren't extracted! The recovery uses the zip file as it is.
Good luck

okaythan24 said:
I'm going to try to find an official U.S. T-mobile ROM and flash with odin...but does it have to be specifically for SM-G9350? I don't think I can find one for that......
I am a member because the owner hates the Iphone and I respect that
Click to expand...
Click to collapse
Were you able to flash the U.S. T-mobile ROM onto SM-9350?
The official firmware can be found on https://www.sammobile.com/firmwares/database/SM-G935T/

I found it yesterday but their free server is under maintenance so he will have to pay to just download a firmware file.
I don't know why don't samsung provide them for free on their site!

Update SM-G935FD Dual Sim to Android 7 ?

I bought this phone from the USA about year and a half and I'm using it in Macedonia, Europe the whole time. It is a dual sim, but I'm not sure which country it is exactly from, Taiwan maybe I guess?
The model is SM-G935FD and the Baseband version shows: G935FXXU1APB6.
I tried updating it manually, but always says you're using the latest software version even though android 7 has came out a long time ago.
Can you tell me:
1. How can I update to android 7 ?
2. Why am I not receiving an update automatically, even though this feature was working when I bought the phone. I was getting regular updates automatically ever since I bought the phone up unti a point when the 7 came out.
3. If I update the firmware through an SD card or whatever method you suggest its best, will I continue receiving regular updates automatically after I install the v7.0 ?
4. How can I check what country is this phone from?
Lots of questions, would be glad if someone can clear these things up for me so I can understand better how this works with samsung and different countries models etc.
Thanks up front!

try smart switch on PC to update it... frend of mine had s7 flat and no update via mobile phone, as soon as I connected it to pc and turned on smart switch update came out...

NeoDJW said:
try smart switch on PC to update it... frend of mine had s7 flat and no update via mobile phone, as soon as I connected it to pc and turned on smart switch update came out...
Click to expand...
Click to collapse
I wanted to mention that, but I've probably forgot. I did try Smart Switch, but it also said, latest update already installed. Any other ideas?

http://updato.com/firmware-archive-select-model?q=G935FD&rpp=15&order=date&dir=desc&exact=1

NeoDJW said:
http://updato.com/firmware-archive-select-model?q=G935FD&rpp=15&order=date&dir=desc&exact=1
Click to expand...
Click to collapse
I'm sorry for my noobish questions, but can you please explain to me how to choose the country of my firmware? Do I need to choose a country which I currently reside in? Or do I need to choose a country for which the phone was made? I just want to use English language, even though I use it in Macedonia, Europe.
Please kindly advise. Thanks!

1. How can I update to android 7 ?
i had the exact same problem as you smart switch n ota both said i was on latest software. All you need to do is goto sammmobile download firmware for your s7 edge model if your phone is non carrier or unlocked then you can download any carrier version. after that download Odin n Samsung drivers n view an odin flashing tutorial on YouTube.
3. If I update the firmware through an SD card or whatever method you suggest its best, will I continue receiving regular updates automatically after I install the v7.0 ?
I am getting all the 7.0 updates.
4. How can I check what country is this phone from?
if i remember correctly Its written on the smartphone box although u don't need to worry about the country all you need to know is the model number.
But to tell the truth there is no performance difference only ui change but still if u want to be on the latest version then use Odin. good luck.
I have flashed my s7 edge about a dozen times n haven't faced any flashing problem just be sure to use original cable n try not to use the computer while the flashing is happening. use odin in adminstrator mode n if possible kill extra background processes like chrome etc (not needed but i still do it just to be safe)

Alecia1212 said:
1. How can I update to android 7 ?
i had the exact same problem as you smart switch n ota both said i was on latest software. All you need to do is goto sammmobile download firmware for your s7 edge model if your phone is non carrier or unlocked then you can download any carrier version. after that download Odin n Samsung drivers n view an odin flashing tutorial on YouTube.
3. If I update the firmware through an SD card or whatever method you suggest its best, will I continue receiving regular updates automatically after I install the v7.0 ?
I am getting all the 7.0 updates.
4. How can I check what country is this phone from?
if i remember correctly Its written on the smartphone box although u don't need to worry about the country all you need to know is the model number.
But to tell the truth there is no performance difference only ui change but still if u want to be on the latest version then use Odin. good luck.
I have flashed my s7 edge about a dozen times n haven't faced any flashing problem just be sure to use original cable n try not to use the computer while the flashing is happening. use odin in adminstrator mode n if possible kill extra background processes like chrome etc (not needed but i still do it just to be safe)
Click to expand...
Click to collapse
Just checked my phone with PHONE INFO app and there seems to be no CSC code?! All these field are empty:
Original CSC Code: blank
Firmware CSC Code: blank
Active CSC Code: blank
Available CSC Codes: blank
CSC Country: blank
I tried dialing *#1234# and it says:
"USSD code running"
but it shows some kind of error right after:
"connection problem or invalid mmi code"
and does not enter the menu with the CSC code. Tried restarting the phone, switching sim cards and what not.. Nothing worked and I have no clue what my CSC code is now.
My original box is gone and can't really see what country it was made for, but as far as I can remember it didn't say anything on the box. The title of the original amazon.com listing says: Internationally Sourced (Middle East/Africa/Asia) Version G935FD which doesn't say much.
I don't know what to do, I'm a bit scared to flash it with just about any country firmware. There's got to be a way to find more about this phoe CSC?

spiritfly said:
Just checked my phone with PHONE INFO app and there seems to be no CSC code?!
Click to expand...
Click to collapse
Download cpuz app from play store. From the app you will find what is your phone chipset. If it is exynos download any 935fd nougat firmware and flash it with Odin.basically 935fd is a unlock version. it's support all csc version and you will also get update how much I know.

I have an rooted Android 7 on my S7 Edge DUOS without issues.
I'm looking the rom for Oreo but there is not exist yet, I think...
---------- Post added at 07:32 PM ---------- Previous post was at 07:32 PM ----------
I have an rooted Android 7 on my S7 Edge DUOS without issues.
I'm looking the rom for Oreo but there is not exist yet, I think...

Have a SM-G930V. Want to flash but have no idea what to do.

Hey there, hope y'all are doing well.
I recently purchased a Samsung Galaxy S7 SM-G930V, Nougat 7.0 (note: I live in europe, and it's an unlocked phone). I want to get rid of Verizon logo while booting and all the unnecessary apps connected with Verizon. Plus, as you know Verizon locks some functions like the device maintenance, turning off the backlight of the capacitive buttons, etc, etc.
So, I'd like to have a clean/untouched samsung firmware without any useless apps.
Is androidfilehost.com trustworthy? what about updato.com? (the latter had slow dl speed, and I stumbled upon the first alternative)
PS. by the way, mine reads G930VVRS4BQI1, so one thing that confused me was while loking up for files to download; should I get the G930VVRS4BQI1 which may be the only compatible file for my phone, or do I already have G930VVRS4BQI1, so downloading it would be useless?
Since I wouldn't like to tinker often with the phone system, what do you suggest, flashing or rooting?
Is there any guide for my case for flashing?
I noticed these two on the front page:
---[Rom] [Ufirm_QD2_Hybrid_Nougat_Rom_FlashFire_Install][Status Official For VZW S7FLAT]Last edited by CVertigo1; 25th September 2017
---[Rom] [Verizon_TMO_Hybrid_Nougat_Rom_FlashFire_Install][Status Official] [S7flat]Last edited by CVertigo1; 26th May 2017 at 03:13 PM.
which should I pick?
and since the posts were last edited in may and september, where can I find the latest firmware?
and after doing all this, will everything work well, will I get OTA updates?
I would really appreciate someone helping me out, whenever you're free.
Thanks in advance

You can actually cross flash any Qualcomm s7 firmware between all carrier handsets. With your case being in Europe I would recommend the sm-G930U firmware. Which is the carrier unlocked variant of the S7 stateside that has all bands unlocked that the modem is capable of. You will recieve OTA's. It's Odin files are on Updato and SamMobile. AndroidHost is trustworthy.
In your case of not wanting to tinker or have a "need to have" rooted feature on the new device, I would flash the the 930U firmware and enjoy your new non branded system.

JediDru said:
You can actually cross flash any Qualcomm s7 firmware between all carrier handsets. With your case being in Europe I would recommend the sm-G930U firmware. Which is the carrier unlocked variant of the S7 stateside that has all bands unlocked that the modem is capable of. You will recieve OTA's. It's Odin files are on Updato and SamMobile. AndroidHost is trustworthy.
In your case of not wanting to tinker or have a "need to have" rooted feature on the new device, I would flash the the 930U firmware and enjoy your new non branded system.
Click to expand...
Click to collapse
Hey JediDru,
I also just bought the S7 Verizon variant, and am planning on using it on MetroPCS. Would you recommend the 930U firmware for me as well? I wouldn't mind getting rid of the Verizon bloat before I hand it over to my wife...

jbjcurly said:
Hey JediDru,
I also just bought the S7 Verizon variant, and am planning on using it on MetroPCS. Would you recommend the 930U firmware for me as well? I wouldn't mind getting rid of the Verizon bloat before I hand it over to my wife...
Click to expand...
Click to collapse
You very well could. I think there is a thread around here specifically about metropcs setup somewhere between the verizon s7 and tmobile s7 forums. I use my 930v flashed to 930U on tmobile.

JediDru said:
You can actually cross flash any Qualcomm s7 firmware between all carrier handsets. With your case being in Europe I would recommend the sm-G930U firmware. Which is the carrier unlocked variant of the S7 stateside that has all bands unlocked that the modem is capable of. You will recieve OTA's. It's Odin files are on Updato and SamMobile. AndroidHost is trustworthy.
In your case of not wanting to tinker or have a "need to have" rooted feature on the new device, I would flash the the 930U firmware and enjoy your new non branded system.
Click to expand...
Click to collapse
hey there, thanks for your advice! I downloaded the latest file from here. sammobile"dot"com/firmwares/galaxy-s7/SM-G930U/VZW/
In a moment I was clueless at the "pick country" since there were more than one USA options. so I went with verizon, since my phone comes from verizon.
In the link I mentioned above it reads this This is for SM-G930U from USA (Verizon) which makes no sense to me, how it can be both "U"-unlocked and verizon at the same time... but, oh well, I flashed it 4 days ago and I've encountered no problem, which is all that matters! Hope I made no mistake at picking that file.

Recently purchased galaxy S7 SMG-930V (Best buy version) from a private owner.
I am on cricket and on APN setup LTE and MMS works without issues. Only issue is that upon dialing USSD code i get 'Connection problem or Invalid MMI code' . I tried all options available mentioned in this forum still doesn't work. Which version of SM-G930U should i flash? Main reason i purchased the phone is for Samusing Pay. Don't want to brick or lose Samusing Pay option after flash.
Inputs are appreciated.

thricegreat said:
hey there, thanks for your advice! I downloaded the latest file from here. sammobile"dot"com/firmwares/galaxy-s7/SM-G930U/VZW/
In a moment I was clueless at the "pick country" since there were more than one USA options. so I went with verizon, since my phone comes from verizon.
In the link I mentioned above it reads this This is for SM-G930U from USA (Verizon) which makes no sense to me, how it can be both "U"-unlocked and verizon at the same time... but, oh well, I flashed it 4 days ago and I've encountered no problem, which is all that matters! Hope I made no mistake at picking that file.
Click to expand...
Click to collapse
Did it remove all the bloatware from Verizon?
Does Samsung pay works?

matrixddl said:
Did it remove all the bloatware from Verizon?
Does Samsung pay works?
Click to expand...
Click to collapse
Yes Flashing the G930U firmware removes all carrier bloat.
Samsung pay comes with the U firmware.
The last time I was on the U I had bad standby drain. I read somewhere else it has to do with the U not dozing correctly. They may very well have fixed it now, I'm on the latest tmobile 4BRA firmware and it sleeps like a baby right now.

JediDru said:
Yes Flashing the G930U firmware removes all carrier bloat.
Samsung pay comes with the U firmware.
The last time I was on the U I had bad standby drain. I read somewhere else it has to do with the U not dozing correctly. They may very well have fixed it now, I'm on the latest tmobile 4BRA firmware and it sleeps like a baby right now.
Click to expand...
Click to collapse
Flashed the verizon U firmware and it did remove all the bloatware. Still need to check on battery drain with Samsung Pay. All other apps are in "Always Sleeping Apps" for better battery performance.
For future reference make sure before flashing new firmware google accounts and lock screen securities are removed/disabled.
Is there a way to back up apps with user data and home screen and reuse instead of installing all over again when a new firmaware is flashed. Spoiled by the root and titanium full back. That was so easy.

matrixddl said:
Flashed the verizon U firmware and it did remove all the bloatware. Still need to check on battery drain with Samsung Pay. All other apps are in "Always Sleeping Apps" for better battery performance.
For future reference make sure before flashing new firmware google accounts and lock screen securities are removed/disabled.
Is there a way to back up apps with user data and home screen and reuse instead of installing all over again when a new firmaware is flashed. Spoiled by the root and titanium full back. That was so easy.
Click to expand...
Click to collapse
As far as I know, no. It's not so bad. I had gotten into the habit of taking screen shots of my app drawer and redownloading. To think now I can just redownload the configuration of apps I had before is as good as it gets. I still just redownload. I like to re-set everything back up just so I know its done.

I haven't tried this method but to backup and restore all installed apps check this Link.

matrixddl said:
I haven't tried this method but to backup and restore all installed apps check this Link.
Click to expand...
Click to collapse
Actually, if all you want to do is switch carriers (same GMail address), then a firmware swap will work.
I have an ex-Verizon (blacklisted IMEI - previous owner)S7 that I was moving to Tracfone (which uses both VZW and T-Mobile towers) - naturally, VZW was a non-starter; however, the UnCarrier was fine, so I used a T-Mobile nanoSIM (Tracfone triple-punch SIM kit includes SIMs from all except Sprint) and replaced the VZW firmware with T-M firmware (Prince Comsy ODIN does the track rather neatly). As long as your IMEI is not blacklisted from the TARGET, such a swap will always work.

Help please, I flashed rom and ruined phone

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Sm-g975u need help switching att to tmobile ????'s

sm-g975u unlocked att phone wanting to change to tmobile. I have a tmobile sim and had originally plugged this in. The phone works fine but I recently noticed it has no Ota updates occurring. I would like to load tmobile firmware on it to enable some of the tmobile features as well but primary concern is ota updates.
the service provider sw ver.
SAOMC_SM-G975U-OYN-AT-PP-0033
ATT/ATT/ATT
BUILD NUMBER
PPR1.180610.011.G975USQS1ASD9
Ap/CP:G975USQS1ASD9
Csc:G975UOYN1ASD9
Last update may 2019
When I try says fully updated when I put it on samsung switch it says fully updated
Can this be done?
What firmware do you suggest?
Csc *#272imei#(may have that wrong) but is recognized and does work not sure when and what to use here, many options.
Also, not sure of the answer here, but if I run an update or csc change (the phone is unlocked) would it require me to unlock it again for any reason?
I am trying to get the phone close to a tmobile if that is possible
Thank you in advance if i need to give more info please let me know.

Since you have a t mobile SIM card, now all you need is the patched version of Odin, the latest t mobile firmware from sam firm, and maybe (not sure) Samsung switch. You might also need drivers for your PC to recognize your phone. This was done using Samsung Kies back in the S3 and S4 days, not sure if it or some other program is needed for the S10.

Sorry new to this which patched version of Odin? Like what number?
Also, just the latest version of tmb?
Country/Carrier
Date
USA (T-Mobile)
2020-08-13
Version
PDA
10
G975USQS4DTG1
CSC
G975UOYN4DTG1?
It doesn't matter that I am upgrading from G975UOYN1ASD9?
Sorry super new to this.