Question Is it possible to in-place flash? As in, flashing the same firmware already on the phone. - Samsung Galaxy S21+

Hey, first post so sorry if I say anything off lol.
I have a G996U purchased from Verizon that I flashed to U1 firmware like 2 years ago when I first got it, and have had no issues since. I had a OTA software update the other night that seems to have triggered a carrier lock in my phone. The phone works fine for 5 minutes, then I get a popup telling me the phone is locked and to contact Verizon, despite the phone being from Verizon and running a Verizon sim. I went to them and unfortunately nothing they did could resolve it (new SIM, eSIM, etc), so they shipped me a new phone via insurance. I'm wondering though if I could save myself the hassle of transferring everything and do an in-place flash on the phone to see if that clears up the issue. I am already on the newest firmware (G996U1UEU5EWB1), so I can't upgrade, but I was wondering if I'd be able to flash the same firmware already on the phone while keeping all my data. Thanks.

Yes, just flash with home_csc.

Arealhooman said:
Yes, just flash with home_csc.
Click to expand...
Click to collapse
Thank you, just also want to ask bc I'm actually not sure which software to go for. I thought I had flashed XAA long ago, and I'm definitely on U1 firmware, but when I check "Service provider software version" in settings, it says VZW rather than XAA. Is it safe to download XAA firmware for a reflash or should I just do VZW to be safe?

You can flash any csc firmware.

Related

[FIRMWARE] G950U1 Unlocked AT&T QK2

As of this writing (11/29/2017) this is the latest firmware for the G950U1 att unlocked S8 . I'm leaving this here for reference so people can return to it if/when they need it.
Download, extract, remove .md5 file name off the end of each file, flash.
G950U1UEU2AQK2 (This WILL update your bootloader so after this, no going to QH3 or before. Not that you'd have a reason to)
https://drive.google.com/open?id=1gvQ0kaZTwbEYe2jvuIa05pCvwkS4ddtg
joe3681 said:
As of this writing (11/29/2017) this is the latest firmware for the G950U1 att unlocked S8 . I'm leaving this here for reference so people can return to it if/when they need it.
Download, extract, remove .md5 file name off the end of each file, flash.
G950U1UEU2AQK2 (This WILL update your bootloader so after this, no going to QH3 or before. Not that you'd have a reason to)
https://drive.google.com/open?id=1gvQ0kaZTwbEYe2jvuIa05pCvwkS4ddtg
Click to expand...
Click to collapse
you donnt need to remove the .md5
you will need modded odin though.
mweinbach said:
you donnt need to remove the .md5
you will need modded odin though.
Click to expand...
Click to collapse
You don't need to no, but it speeds up the process. I'm just posting firmware not making a hand holding tutorial. There's enough of those around
Thanks Joe I was tired of returning all the way back to the beginning and getting all those new updates on my unlocked S8
joe3681 said:
You don't need to no, but it speeds up the process. I'm just posting firmware not making a hand holding tutorial. There's enough of those around
Click to expand...
Click to collapse
Yeah and on a Mac you do need to, or it freezes Odin completely
If I flash unbranded FW on a carrier specific device, loke tmo or att for example, would it sim unlock the phone?
If I flash tmo FW on an att s8 would it in turn allow me to use the att original device on tmo? I ask these questions because I feel like it would work for both my questions since flashing the FW flashes both boot, kernel and baseband/radio. The which is needed for signal. Just some theories but would love to know the answers.
Btw, I have a F model S8+ and was planning on buying some US branded devices so I was curious.
this.guy.lol said:
If I flash unbranded FW on a carrier specific device, loke tmo or att for example, would it sim unlock the phone?
If I flash tmo FW on an att s8 would it in turn allow me to use the att original device on tmo? I ask these questions because I feel like it would work for both my questions since flashing the FW flashes both boot, kernel and baseband/radio. The which is needed for signal. Just some theories but would love to know the answers.
Btw, I have a F model S8+ and was planning on buying some US branded devices so I was curious.
Click to expand...
Click to collapse
No, it will not unlock the phone (Note: Verizon phones are factory unlocked and remain that way after a firmware flash)
Yes, you can flash any carriers FW to a US S8 and use it with a different carrier.
So I understand, your saying if I flash att FW to a T-Mobile s8 I can use it on tmobile? If that is the case, to me that's an unlock of sorts tiny book lol. Just wanna make sure is all
Deleted
this.guy.lol said:
So I understand, your saying if I flash att FW to a T-Mobile s8 I can use it on tmobile? If that is the case, to me that's an unlock of sorts tiny book lol. Just wanna make sure is all
Click to expand...
Click to collapse
You can flash att firmware and use it on TMobile but it will still be locked to TMobile. Just running att firmware.
joe3681 said:
You can flash att firmware and use it on TMobile but it will still be locked to TMobile. Just running att firmware.
Click to expand...
Click to collapse
Just realized the typo.....what I meant was, if I flash ATT on a TMO variant I can use ATT while locked to tmo? I'm very unfimiar with combination fw and always opted for the UK models for alot of reasons. Sorry for the confusion of my op question. I know on the s7 and edge if you flashed the US unlocked firmware it not only removed AOL bloat but it unlocked the device. So that is why I ask.
this.guy.lol said:
Just realized the typo.....what I meant was, if I flash ATT on a TMO variant I can use ATT while locked to tmo? I'm very unfimiar with combination fw and always opted for the UK models for alot of reasons. Sorry for the confusion of my op question. I know on the s7 and edge if you flashed the US unlocked firmware it not only removed AOL bloat but it unlocked the device. So that is why I ask.
Click to expand...
Click to collapse
I had a TMobile S7 edge and flashing unlocked firmware never unlocked the device. That's handled by TMobile servers so...
Flashing unlocked firmware will give you just that. The smoother, bloat free firmware from another device but not the actual sim unlock.
I bought an unlocked device and wanted wifi calling so I flashed the g950usqs1aqf7 att firmware with Odin and it worked to enable wifi calling but I'm unable to get any ota updates and I hate the bloat. Is it possible to get WiFi calling with an unlocked firmware like this one? Also what is the difference between the U and U1 firmware variants?
maquino1985 said:
I bought an unlocked device and wanted wifi calling so I flashed the g950usqs1aqf7 att firmware with Odin and it worked to enable wifi calling but I'm unable to get any ota updates and I hate the bloat. Is it possible to get WiFi calling with an unlocked firmware like this one? Also what is the difference between the U and U1 firmware variants?
Click to expand...
Click to collapse
There are plenty of threads on this, but I don't think anyone was ever successful. I flashed att Oreo to my u1 and got the options, but can't get my company to change my imei back.... My personal phone sim works fine. Quit at that point since it's an Ims registration error. You can try merging the wifi calling apks, but I'm pretty sure it's baked pretty deep in the os. The Verizon guys got some of it working. You can try their threads and see if any of it applies to us.
twizt3d said:
There are plenty of threads on this, but I don't think anyone was ever successful. I flashed att Oreo to my u1 and got the options, but can't get my company to change my imei back.... My personal phone sim works fine. Quit at that point since it's an Ims registration error. You can try merging the wifi calling apks, but I'm pretty sure it's baked pretty deep in the os. The Verizon guys got some of it working. You can try their threads and see if any of it applies to us.
Click to expand...
Click to collapse
Thanks. Some threads made it sound possible but inconclusive. I'll just assume it doesn't work.
BTW, can you link to the att oreo fw? And what do u flash that with Odin or comsey?
The thread right below this one entitled Oreo ota has all the details and it needs to be side loaded through adb. Not Odin. But you will need to Odin the 950u base to get off u1
twizt3d said:
The thread right below this one entitled Oreo ota has all the details and it needs to be side loaded through adb. Not Odin. But you will need to Odin the 950u base to get off u1
Click to expand...
Click to collapse
Ok thanks. I need to flash anyways because I'm having terrible battery issues and just debating whether to go to a newer version of 950u or back to U1 and losing WiFi calling. In your opinion is oreo beta worth it
So just to confirm, I have read everything, but I am just a bit confused. If I flashed the unlocked firmware via modified odin on a locked AT&T S8 it will remove a lot of the carrier bloat and give my my wifi hotspot back, but remove wifi calling. Similar to when I flashed the T-Mobile firmware on my AT&T S7 and got rid of a ton of the AT&T bloatware but was able to activate my wifi hotspot but lost wifi calling. I stay locked to AT&T which is fine that is not my purpose for flashing
---------- Post added at 07:03 AM ---------- Previous post was at 07:01 AM ----------
and can you re-upload the link is dead now
The links don't work. Any chance you've still got the firmware? I've been overseas since october. I have an unlocked AT&T phone that I intend to keep using when I get back, so I want to keep it AT&T FW.
Hi.
I have a G955U Galaxy S8+ AT&T Factory Unlocked on Android 7.0
Baseband Version: G955USQU1AQD9
Android Security Patch Level - April 1, 2017
I no longer live in the US, and currently in the Philippines. Phone works great and the signal is too and all, but I cannot get OTA updates.
Can I just download the firmware file in this thread and flash straight through ODIN, or do I need to follow another guide?

It is possible to eliminate the Service Provider SW version from my SM-G955U1?

Folks,
Happy 2018,
Quick one:
I bought a locked ATT SM-G955U & reflashed it to a SM-G955U1 (currently on the latest December Security update) but the issue here is that despite doing this and eliminating ATT bloatware my phone continues to show Service Provider SW Ver. 9889544437594c3958 XAA//ATT
My buddy have an unlocked SM-G955U1 out of the box & there is no Service Provider information on his phone settings. He also gets all updates via OTA without issues, whereas I need to flash using ODIN manually which is not an issue for me but will be easier to get the OTA updates.
My phone is almost perfect but is there any possibility of flashing the specific CSC file for the SM-G955U1 on my SM-G955U transformed to a SM-G955U1?
I guess this was explained clearly.
Thanks for your support. XDA is the best.
SW, if listed as xaa/xaa/att...is what you wanted. The last three are always hardwired. I bought a T-Mobile U1 and switched it to Verizon. So mine now says vzw/vzw/tmo. If I read correctly in previous postings, you may still be forced to update manually, if on ATT. I believe...
If you flashed the files correctly in ODIN, then you wont see the provider version at all. It doesn't appear in the unlocked firmware. And you'll also get OTAs just fine. I know, because I bought a VZW 955U and flashed it with the unlocked 955U1 software.
Yup I can confirm too. I flashed the unlocked firmware to my spring g955u.
I can get OTA updates same with unlocked phone
Precisely .. I need to flash the correct one...
Where do I get the unlocked firmware ?
rich168 said:
Yup I can confirm too. I flashed the unlocked firmware to my spring g955u.
I can get OTA updates same with unlocked phone
Click to expand...
Click to collapse
Did you use regular ODIN or the modded Odin?
Where do you get the unlocked firmware from?
I got it from sammobile & the SW version persists
henrickrw said:
Did you use regular ODIN or the modded Odin?
Where do you get the unlocked firmware from?
I got it from sammobile & the SW version persists
Click to expand...
Click to collapse
Nodded odin
Check snap+ thread

Please help with switching firmwares, kind of a weird situation.

Getting a new-in-box Note10+ today from Swappa, so I assume it will be on some Android 9.0 TMO firmware. I need to get it onto the Verizon firmware.
SamFirm only gives the latest Android 10 firmwares. (It may be important to note that the VZW and XAA files both have the exact same filename: SM-N975U1_10_20200118102941_hj8esiossq_fac)
Is it safe to open the box > go straight into download mode > flash the newest VZW firmware via Odin?
Or are there other things I should do first? For example (in no particular order):
- first boot
- updating the software via settings
- flashing XAA firmware, THEN first boot with verizon sim already in phone per this thread, THEN flash VZW firmware
Thank you. Also any other suggestions are welcomed.
finshan said:
Getting a new-in-box Note10+ today from Swappa, so I assume it will be on some Android 9.0 TMO firmware. I need to get it onto the Verizon firmware.
SamFirm only gives the latest Android 10 firmwares. (It may be important to note that the VZW and XAA files both have the exact same filename: SM-N975U1_10_20200118102941_hj8esiossq_fac)
Is it safe to open the box > go straight into download mode > flash the newest VZW firmware via Odin?
Or are there other things I should do first? For example (in no particular order):
- first boot
- updating the software via settings
- flashing XAA firmware, THEN first boot with verizon sim already in phone per this thread, THEN flash VZW firmware
Thank you. Also any other suggestions are welcomed.
Click to expand...
Click to collapse
100% safe to immediately flash VZW firmware. The phone wont know any difference if you booted it first or not.
Youdoofus said:
100% safe to immediately flash VZW firmware. The phone wont know any difference if you booted it first or not.
Click to expand...
Click to collapse
Thank you. And I just noticed this is the Note 10 forum not the 10+ forum (thanks google)...
What about concerns per the thread I linked where flashing VZW firmware is still recognized as a TMO device unless you boot the XAA firmware with the verizon sim before flashing the VZW firmware? Is that an old issue that's no longer a problem now?
The device won't mind that I'm jumping from an older version of Android to a newer version? What about the bootloader version, when does that get updated, as I understand it's currently on version 2 and how will that affect this process?
Thanks again, you post was short and being an $800 device I obviously am trying to have all my bases covered before messing with it.
finshan said:
Thank you. And I just noticed this is the Note 10 forum not the 10+ forum (thanks google)...
What about concerns per the thread I linked where flashing VZW firmware is still recognized as a TMO device unless you boot the XAA firmware with the verizon sim before flashing the VZW firmware? Is that an old issue that's no longer a problem now?
The device won't mind that I'm jumping from an older version of Android to a newer version? What about the bootloader version, when does that get updated, as I understand it's currently on version 2 and how will that affect this process?
Thanks again, you post was short and being an $800 device I obviously am trying to have all my bases covered before messing with it.
Click to expand...
Click to collapse
you cannot go backwards in bootloader revisions, but you can go backwards in android versions as long as theyre on the same BL revision(not likely, but who knows? I didnt look yet). Also, the worst thing that could happen if you try to flash an older BL version is that itll fail in Odin and will still allow the phone to boot normally (usually, and if it doesnt, its still fixable). The only issue with booting it after flashing new firmware with your current sim is that itll install the carrier specific stuff on the phone so long as the CSC needed for that is in the multi CSC pack you flashed on the phone, and if it does install the carrier crap you dont want, just factory reset it and reboot with the actual sim you want you use
no problem man, thats what we are here for

Question Change Service Provider Software

Hi all,
I bought this phone from my friend who was using it on ATT. It is global unlocked phone and I activate and register, change new 5gsim and no problem on Verizon Network.
It is working and fine but, it shows ATT logo when phone is boot up and still it has ATT bloatware.
Under the Software information > Service provider software version is showing below
SAOMC_SM-F711U_OYN_ATT_RR_0016
ATT/ATT/ATT
SO THIS PHONE IS legit!! even Verizon told us. They did everything with me for 3 hours. wow!
Anyway, I think it's the problem of other carrier's software is in
Do you guys know how to change provider software to Verizon? should I contact Samsung??
Please help me.
Thank you!!!!!!!!
Leeman78 said:
Hi all,
I bought this phone from my friend who was using it on ATT. It is global unlocked phone and I activate and register, change new 5gsim and no problem on Verizon Network.
It is working and fine but, it shows ATT logo when phone is boot up and still it has ATT bloatware.
Under the Software information > Service provider software version is showing below
SAOMC_SM-F711U_OYN_ATT_RR_0016
ATT/ATT/ATT
SO THIS PHONE IS legit!! even Verizon told us. They did everything with me for 3 hours. wow!
Anyway, I think it's the problem of other carrier's software is in
Do you guys know how to change provider software to Verizon? should I contact Samsung??
Please help me.
Thank you!!!!!!!!
Click to expand...
Click to collapse
Flash a U1 software and VZW userdata.
rogerandgina06 said:
Flash a U1 software and VZW userdata.
Click to expand...
Click to collapse
Thank you for reply. I don't know what you mean and how should I do it?
Would you let me know?
Leeman78 said:
Thank you for reply. I don't know what you mean and how should I do it?
Would you let me know?
Click to expand...
Click to collapse
Read here to get a idea.
F711U and F711U1 Firmware Links and Flashing Discussion Here
(WIP, files are currently processing and uploading) For those who aren't already aware, F711U is the model number of all of the US carrier versions of the Z Flip3. The F711U1 is the model number of the same device, but sold by Samsung SIM...
forum.xda-developers.com
rogerandgina06 said:
Read here to get a idea.
F711U and F711U1 Firmware Links and Flashing Discussion Here
(WIP, files are currently processing and uploading) For those who aren't already aware, F711U is the model number of all of the US carrier versions of the Z Flip3. The F711U1 is the model number of the same device, but sold by Samsung SIM...
forum.xda-developers.com
Click to expand...
Click to collapse
I found solutions and flash the firmware with Verizon userdata, but, still shwoing everything on ATT. Not Verizon.
I even flash with factory reset. Yes, I used Odin 3.13.1b patched and it passed...
Do you have any idea?
Leeman78 said:
I found solutions and flash the firmware with Verizon userdata, but, still shwoing everything on ATT. Not Verizon.
I even flash with factory reset. Yes, I used Odin 3.13.1b patched and it passed...
Do you have any idea?
Click to expand...
Click to collapse
Try google to search for a different csc. After that I don't have a clue...
I got it working. Thank you. your "Flash a U1 software and VZW userdata." help me a lot.
I did find out good firmware and software at Sammobile and now everything works as Verizon.
Thank you
Leeman78 said:
I got it working. Thank you. your "Flash a U1 software and VZW userdata." help me a lot.
I did find out good firmware and software at Sammobile and now everything works as
Leeman78 said:
I found solutions and flash the firmware with Verizon userdata, but, still shwoing everything on ATT. Not Verizon.
I even flash with factory reset. Yes, I used Odin 3.13.1b patched and it passed...
Do you have any idea?
Click to expand...
Click to collapse
Can you link me to the one you used ? I’m trying to flash mine to u1 and I can’t get it to pass for anything, I keep getting model mismatch or complete write fail
Click to expand...
Click to collapse
@iHeartslutsz https://www.sammobile.com/samsung/galaxy-z-flip-3/firmware/#SM-F711U1
Whenever I flash a new software through Odin after downloading it from Sammobile, the Dark Side RC theme (I think it's related somehow to the so called Star Wars special edition) for samsung, comes as one of two default themes into the system and can not be removed. Hence, even I change the theme from setting, this iron head appears everytime I restart the phone for a few seconds. So I tried different firmwares for my country but nothing changes. So someone from another forum said that my service provider software version differs than theirs. So in short, how to get rid of this silly iron head? Any help would be appreciated.
change csc, use SamKEY (paid) or SamFwFRPTool (free), then flash frimware you need with odin with CSC file (this will wipe your phone and reset to factory), not use home_csc in odin
wojtas69 said:
change csc, use SamKEY (paid) or SamFwFRPTool (free), then flash frimware you need with odin with CSC file (this will wipe your phone and reset to factory), not use home_csc in odin
Click to expand...
Click to collapse
Thank you. I downloaded totally different firmware files with different CSC code and the problem has solved.
SamFwFRPTool is a tool I use to change my CSC software channel. The way I understand it you need to change the CSC in the program before flashing the u1 software on it so you get a full unlock as opposed to a partial one.
I might be wrong here though so don't take everything I say as being true.

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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