Guide to Flash AT&T stock Rom - AT&T Samsung Galaxy S8+ Questions & Answers

I have searched Reddit and XDA and can't seem to find a good comprehensive guide to switching my phone over to the AT&T firmware. I tried a few different firmware versions and tried flashing them via odin but was unsuccessful.
My phone is an unlocked Sprint S8+ running the sprint firmware. I have had a bunch of problems after switching to AT&T due to this. My phone keeps trying to activate on the sprint network, tells me to setup voicemail and WiFi calling doesn't work.
Even after flashing the AT&T image I still get the sprint startup screen. I have seen guides that say I need to change something via ADB, but those usually involve going to the unlocked image. I use Knox and Samsung pay on a regular basis so I am hesitant to try to much and risk tripping the fuse.
Any help would be much appreciated.
Thanks!

Related

Sprint S5 over to Verizon Possible?

Well I do have a sprint phone and want to know if I can get it to work with a Verizon Pre-Paid SIM, went to Verizon Website and it says my IMEI is ok for working with that. Went and bought the SIM and it just tells me "Invalid SIM". Any help would be appreciated do I need to unlock it? Flash It?
Flash it but it'll only be 3g not 4g,even if it read sim it won't get lte, i flash phone for a living
Sent from my SM-G900R4 using XDA Free mobile app
I guess my question is the towelroot won't work because of my firmware version so I need to do the odin, but it says to use CF-Auto-Root do I use the firmware version I have for Sprint, or download the firmware version to verizon I want?
this is almost exactly is what i'm trying to figure out, just in reverse, because i can get a good local S5 VZW but SPR use different LTE bands.
i know typically the saying is never flash anything for a different carrier of your model, but some people seem to do it with a ymmv statement.
i've read several threads from people talking about carrier rom swap, some casually saying sure it can work, but no updates from OPs or others that said they would try, definitively saying that it worked or failed.
so... has anyone literally gotten something like the Odin flashable firmware at sammobile or someplace for the Verizon VZW sm-g900v and flashed it with the Sprint SPR sm-g900p stock firmware, completely changing its baseband, modem, everything so it now identifies and works the same as a Sprint phone?
or should i just keep waiting for another similarly cheap S5 bundle in a Sprint flavor?

Some Verizon love

This is just a beg and ask for help thread. So just my thoughts I had an LG G2 and there were tmobile roms that we could use on the g2 with no problems. Would it be possible to have a tmobile rom and use a verizon kernel and radio? But my hopes are that some of you wonderful people could perhaps throw some help to the verizon section of this phone, it seems to be left in the dust compared to tmobile/spring roms. Just one decent rom would be greatly appreciated with root on android 5. Thank you all for reading this.
I assume that you have the Dev edition of the VZW Edge? If so, I would say it would be worth a try, at least with the T-Mobile Roms and not Sprint, because I have seen too many times where its Sprint only on Sprint. I have not had much experience with VZW, but I would say it is safe to assume that you could flash a full ROM with the only issue potentially being a missing APN to VZW. Try RiverRom 5.1.1, that isnt based off a Tmo rom, so it could have better support for Verizon. If anything goes wrong, just use ODIN to flash back to stock.
Ok could someone please help me. I've managed to get the stuff to setup odin and do all that jazz. Boot to download mode download an official stock release of 4.4 kitkat and goto downgrade from 5.0.1 on my n915v but no success, says emmc write fail.
Is my device locked to 5.0.1 can I not even downgrade, no I do not have the developers edition of the phone but I do have developer unlocked in the settings menu and have selected debugging mode.
Any ideas?
You're stuck with what you have. Nobody has successfully unlocked the verizon version
Sent from my SM-N915V using XDA Free mobile app

Unlocked Sprint Note 5 new firmware help

Ok, so my question ha a few points here. I have been flashing roms for many years but never really though of this until recently as I now have an unlocked phone.
1. As my Sprint Note 5 is unlocked, can I flash say the Unlocked Version of software to the phone taking away carrier branding? I manage a store from another carrier and I hate that when I boot my phone it shows Sprint. I know it will not trip knox as long as it is Official Stock software.
2. If I do flash said Unlocked version software replacing Sprint software, will it change my connection at all? I have seen that flashing ATT software on a Verizon device did manage to improve ATT tower connection however I wonder if this is maybe a placebo effect as opposed to actually changing the bands and connections the device makes.
If you guys could help me out that would be great. :good:
Cheers
There is no unbranded firmware for the Sprint model because well, it is a exclusive model so even if you flash XAS instead of SPR firmware some or all apps will still appear. The only way to get rid of everything Sprint is via custom ROM= tripped KNOX. The SM-N920P cannot run another firmware.

Question Samsung S21 VZN need unlocked or converted to ATT. Tried odin.. Maybe I am an idiot.

Hello.
Got a free phone from a buddy S21 5G. I am wanting to swap it for the S10* 1tb I gave my wife to use it was a bit expensive. So I'd rather ti go back in the box.
Popped the sim in it, it works makes calls sometimes, sometimes not. Texts seem to always work, I am currently on ATT I would prefer to have that firmware as I live in the stick with ho cell service. ATT has wifi calling which is pretty much a necessity here.
So what exactly do I need to do to get this off the VZN fir
Hello. Could you all provide me the links for what I need? Found a link that had a patched Odin plus the firmware. I installed in booted how I was suppose to. Tried to install in and it errored out. Also. I do not know what file to select for the user data selection, I do not mind deleting all data as it 8s hacked up and can put ti back with smart switch.
Hello, did you manage to flash the phone?, I'm stuck with a similar case, mine is a factory unlocked unit from Verizon, it turns out that even if it is factory unlocked, is locked after a few minutes by verizon, I have tried everything to get rid of the VZW firmware but it seems that Verizon locks the bootloader so I can't flash it (it passes om odin and everything but the firmware doesn't change)
I even paid SamKEY credits to change the CSC but it didn't change either.
tylerdustin2008 said:
Hello. Could you all provide me the links for what I need? Found a link that had a patched Odin plus the firmware. I installed in booted how I was suppose to. Tried to install in and it errored out. Also. I do not know what file to select for the user data selection, I do not mind deleting all data as it 8s hacked up and can put ti back with smart switch.
Click to expand...
Click to collapse
Did you ever get your issue fixed?
can anyone suggest to me whether moving from Apple to Samsung is a good option or not? pc games

Question Can't change CSC from T-Mobile to Verizon with firmware S908USQU2AVDC

A question from a noob here. I have a T-Mobile S22 Ultra phone which is network unlocked. As I recently I switched from T-Mobile to Verizon, I'm missing some of the features that are Verizon specific, while not needing anything that is T-Mobile specific anymore. From what I understand, Samsung installs multi SCS firmware on most of the phones these days, which can be changed by a dialer code. That however did not work at all.
Another option I've come across is by flashing provider specific (in my case Verizon) firmware as long as firmware version is the same (S908USQU2AVDC). There are a number of articles on how to do it by using Odin. The issues is no matter what I do and what files I select (like by using CSC file instead of HOME_CSC with or without flashing USERDATA file as well) the result is the same. It shows success and reboots and then reports an error and does the full factory reset which ends up back on T-Mobile version.
The question I have if it's even possible? And if so what I'm doing wrong here. Unlocking a bootloader is not really an option for me...
samirski said:
A question from a noob here. I have a T-Mobile S22 Ultra phone which is network unlocked. As I recently I switched from T-Mobile to Verizon, I'm missing some of the features that are Verizon specific, while not needing anything that is T-Mobile specific anymore. From what I understand, Samsung installs multi SCS firmware on most of the phones these days, which can be changed by a dialer code. That however did not work at all.
Another option I've come across is by flashing provider specific (in my case Verizon) firmware as long as firmware version is the same (S908USQU2AVDC). There are a number of articles on how to do it by using Odin. The issues is no matter what I do and what files I select (like by using CSC file instead of HOME_CSC with or without flashing USERDATA file as well) the result is the same. It shows success and reboots and then reports an error and does the full factory reset which ends up back on T-Mobile version.
The question I have if it's even possible? And if so what I'm doing wrong here. Unlocking a bootloader is not really an option for me...
Click to expand...
Click to collapse
In theory, flashing the correct firmware (VERIZON) should work. I would honestly first wipe the device, then flash (clean, not dirty) the Verizon firmware and setup accordingly. I had a similar case with a TMBILE unit (I had changed carriers) and I had managed to use XAA CSC and then when I reverted to TMOBILE SIM it would not "restart and install carrier updates". I had to basically switch the unit to U1 and then revert to U and it finally pulled all the TMO crap.
I may be mistaken since I haven't done this type stuff since S10, but I think you need to first reset the device and flash the unlocked version then when you put the verizon sim in it should provision it. Then you can flash the verizon package if you want the bloat apps. The features may be hit or miss. You may need to activate the features on the verizon website. Some features may never work as the carrier wont push them to IMEI not in their database of branded phones. There may be things you can do in hidden settings with "Activity Launcher" or other methods.
I'm here trying to figure out the same things for Tmobile and a factory Unlocked phone, before I buy.
Thanks a lot for your suggestions guys! I managed to do what I wanted. This is what I ended up doing, first flashed the unbranded U1 version on my phone and on the first boot Verizon sim was provisioned. Then I flashed Verizon firmware and it worked!

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