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Good day everyone!
I recently got a new phone (Galaxy S21), and I saw that you can bring your own phone to Tracfone, so I gave my Verizon S9 (SM-G960U) to my wife (to upgrade her old Samsung Tracfone phone).
We bought and installed the Tracfone SIM card and everything seemed to be working (she could make and take phone calls).
Little did I realize that Tracfone actually also uses WiFi for phone calls, and thus making and taking calls was not using Tracfone's network while connected to WiFi.
When we started researching why her phone did not work outside the home, we found that the CSC is still set to VZW.
This S9 has the latest April 2021 security update from Verizon (Android 10).
I downloaded an older stock Tracfone ROM, but Odin fails with an Auth error (presumably because the phone is not unlocked nor rooted, and the bootloader is locked).
I also tried just flashing the CSC with a Tracfone CSC, but it also failed with an Auth error.
All of the research I have done to this point indicates that Samsung makes flashing Android 10 Galaxy phones very difficult, and I suspect that I am screwed.
Should I put the Verizon SIM card back in and beg Verizon support for an unlock code? Will that even help?
Why doesn't the Tracfone SIM card override the VZW CSC? I thought the SIM card would take precedence.
Thank you in advance, and I hope I am not repeating another thread (I searched, but I couldn't find anything related to changing CSC or rooting a Samsung Galaxy phone running Android 10).
P.S. I have no objections to performing a factory reset of the phone if it will help.
P.P.S. I would like to run the stock Tracfone S9 image so my wife can get the OTA updates, but I'm willing to do whatever to get it working (I would even be happy with running the existing VZW firmware as long as it works).
Hi guys just got a new phone supposed to be uk unlocked sim free brand new.but its weird
The service provider sw ver dont look english to me
SPR/XAA/VZW
I have my ee sim card inserted and it works to make calls. But there is a weird notification saying OMADM activation not completed
Also says LTE on the screen something I've never heard of or seen here in england we use 4g volte.so I'm confused also the software for uk phones are BTU/BTU/BTU OR XEU/XEU/XEU
And last the box is weird as it says unlocked by Samsung and has a warming saying reproductive harm I was thinking wtf is this phone.
Also it says Qualcomm on the top on a sticker,we use xenox version england
Ps I brought it from Amazon uk
none of it of sounds like a uk version. more like a us one.
raul6 said:
none of it of sounds like a uk version. more like a us one.
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Click to collapse
Can you go into detail please as I'll need to send it back unless there is a way to change it to a uk phone.and what is omadm error popping up on every reboot
Bump for help please guys
No Samsung or phone experts here?that knows what any of this means?
haircut123 said:
Can you go into detail please as I'll need to send it back unless there is a way to change it to a uk phone.and what is omadm error popping up on every reboot
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Click to collapse
you have us version. it can't be turned into uk one. the error is to the with original us firmware and us network
I think it's a Sprint variant.
Samsung CSC Codes List (All) | Change CSC on Samsung Devices
Today, we'll explain Samsung CSC codes. Besides, we also have a list of CSC codes or region codes with a method to change CSC on Samsung.
www.droidviews.com
Is it new?
Yes from amazon uk
So this phone cant be used here in England then other than making phone calls ?and how do I get uk firmware onto the phone?I'm a noob and not good with computers
Also changing the csc codes to uk what will that change?as we dont even have the snapdragon model in england?so would there even be uk firmware for an American phone?
Google tells me spr means sprint and that's the first code of the 3
Vzw looking on google means Verizon and that's the 3rd code so the phone was originally a Verizon locked phone.thats was unlocked and flashed with sprint fw, because the second csc code says xaa and apparently that means unlocked.
So what does this mean for me a uk user.luke I said in the uk our phones are BTU/BTU/BTU or XEU/XEU/XEU if there uk and unlocked
If you have a active sim, try inserting it.
It should come online.
My unlocked 10+ I just got did, zero issues.
If not I would return it.
blackhawk said:
If you have a active sim, try inserting it.
It should come online.
My unlocked 10+ I just got did, zero issues.
If not I would return it.
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Click to collapse
How can I flash uk xenox firmware onto an American snapdragon phone?.I'm a beginner when it comes to this.as I only buy uk phones as I'm in the uk and it seems complicated flashing stuff this handset is a u version and I want to make it the f version
You cannot flash UK firmware on your US phone.
Just return it to Amazon, claim full refund as the product is not as advertised: no UK unlocked version, not new. Also screenshot in post #8 refers to firmware of a Note 9, not a Note 10 (N960 is Note 9), this makes this phone even more suspicious...
Return it. There's a lot of bs going on with sellers of this phone. This has gotten really bad. Amazon, saw some deceptive advertising there recently for this model and the N20U.
Best to contact the seller on the phone first; no phone contact, don't use. Make sure you are given full specs on their site and it's compatible with your country/provider.
Buy only a new one if possible. Used ones may be running on Android 11, you don't want that!
I was able to find a reliable US vender and got a new umlocked 10+ 256gb/12gb Snapdragon about a week ago for $800. It was as advertised except due to its manufacturing date is running on Q not Pie. It's a keeper.
OnnoJ said:
You cannot flash UK firmware on your US phone.
Just return it to Amazon, claim full refund as the product is not as advertised: no UK unlocked version, not new. Also screenshot in post #8 refers to firmware of a Note 9, not a Note 10 (N960 is Note 9), this makes this phone even more suspicious...
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Click to collapse
Oh sorry it's a note 9 i apologise.so if I cant change it to a uk firmware is the phone useless to use in the uk other than to call people?because my sim card works to make calls
Also OMADM activation not completed message is pissing me off
What does it even mean.i think my phone has sprint firmware on it?how can I change it to normal unlocked firmware so it's nothing to do with sprint I cant stant that OMADM ITS MAKING ME MAD
And Verizon is what I think the phone was originally.
Last thing the phone was sold as brand new sealed but it's not even in the correct box the phone I have is 128gb not 512gb
And it had a sealed sticker saying euro sim only but the phone is American? I think the box is fake ?as it looks nothing like any note 9 box I've ever seen
I'm going to try and flash the phone the phone is currently csc SPR/XAA/VZW boot loader 5 I've just downloaded android 10 also on bootloader 5 ovbisly the XAA VERSION will it work or can I only download and flash SPR FIRMWARE?
as I'm trying to get rid of the MADMEN activation not completed message
Update I tried to flash it but when I pressed start in Odin nothing happened so I guess I'm stuck on spr for life unless I forrgire out how to change the first csc
haircut123 said:
Update I tried to flash it but when I pressed start in Odin nothing happened so I guess I'm stuck on spr for life unless I forrgire out how to change the first csc
Click to expand...
Click to collapse
Check this https://forum.xda-developers.com/t/...and-guide-to-convert-to-usa-unlocked.3927478/
SubwayChamp said:
Check this https://forum.xda-developers.com/t/...and-guide-to-convert-to-usa-unlocked.3927478/
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Click to collapse
Cheers the phone is u1 allready just cant change SPR TO XAA
So it's impossible to flash to unlocked unbranded so it's going back to the scammer that sold it to me on amazon
haircut123 said:
So it's impossible to flash to unlocked unbranded so it's going back to the scammer that sold it to me on amazon
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Click to collapse
It's not impossible but if you are not experienced with better get it back, it doesn't worth the try, you can end by messing up completely.
I've flashed phones many many times before normally when I update the fw via ota and then regret it and need to downgrade back .this phone I just flashed but the start button wouldn't work because I was trying to flash XAA VERSION and not the SPR VERSION .I guess if I was to follow a guide on changing the csc from SPR TO XAA then flashing will work but what the point i wanted a uk brand new factory sealed sim free handset like I paid for
So this pos phone can go back to the scammer on amazon.its a discrace they are making fake seals on the boxes.using fake accessories and lieing saying the phones are uk.the average person would fall for this lies because the phone is unlocked my uk sim will work but you get that OMADM pop up and it's a nightmare.plus I doubt half the functionality will even work.
Hope I could get some good advice from the collective. This week my wife and I changed our carrier from ATT to TMOB. I have a Fold 4 and she a Fold 3. Her went perfectly. Mine, not so much.
Both phones were paid off in advance. No balance for either on ATT.
We started out and got the unlock code from the old ATT carrier for both phones.
We got the code to port the existing telephone numbers from the old carrier ATT.
We established out TMOB account.
When we scanned the QR code for TMOB with the fold 4, it asked for the ATT provided unlock code, which it accepted
Fold 4 rebooted
BAD: The Fold 4 booted with the old ATT logo, not the TMOB logo, but it come up with the esim on TMOB.
Good: The fold 3 booted up with the TMOB logon, and it downloaded all the TMOB bloat, and came up with the esim on TMOB
BAD: On the Fold 4, I cannot seem to get 5G service, because the CSC still points to ATT even though in Settings==>Connections it recognized it is on TMOB
So I supidly flashed the TMOB firmware from Sammy, which was the same Oct 1 security release I had on the phone. I used HOME_CSC to prevent data wiping.
When the Fold 4 rebooted, it went into RECOVERY and told me it required a FACTORY RESET. Would not boot up normally. I tried many times
Performed FACTORY RESET. Restored the phone from SAMMY Cloud.
Same issue - still no 5G service still usnign ATT CSC
Called TMOB and they recommended I remove the esim. Mistrake - then I had no service.
Went to TMOB store and they provided a real SIM so I got service back
But still on the ATT CSC
Told me to go back to ATT, but they say it is unlocked?
Any advice how to force the phone to use the TMOB CSC? Phone is NOT rooted. I know if I root it I can force the change. But I don't want to root it.
Thanks in advance.
Flame Red said:
Hope I could get some good advice from the collective. This week my wife and I changed our carrier from ATT to TMOB. I have a Fold 4 and she a Fold 3. Her went perfectly. Mine, not so much.
Both phones were paid off in advance. No balance for either on ATT.
We started out and got the unlock code from the old ATT carrier for both phones.
We got the code to port the existing telephone numbers from the old carrier ATT.
We established out TMOB account.
When we scanned the QR code for TMOB with the fold 4, it asked for the ATT provided unlock code, which it accepted
Fold 4 rebooted
BAD: The Fold 4 booted with the old ATT logo, not the TMOB logo, but it come up with the esim on TMOB.
Good: The fold 3 booted up with the TMOB logon, and it downloaded all the TMOB bloat, and came up with the esim on TMOB
BAD: On the Fold 4, I cannot seem to get 5G service, because the CSC still points to ATT even though in Settings==>Connections it recognized it is on TMOB
So I supidly flashed the TMOB firmware from Sammy, which was the same Oct 1 security release I had on the phone. I used HOME_CSC to prevent data wiping.
When the Fold 4 rebooted, it went into RECOVERY and told me it required a FACTORY RESET. Would not boot up normally. I tried many times
Performed FACTORY RESET. Restored the phone from SAMMY Cloud.
Same issue - still no 5G service still usnign ATT CSC
Called TMOB and they recommended I remove the esim. Mistrake - then I had no service.
Went to TMOB store and they provided a real SIM so I got service back
But still on the ATT CSC
Told me to go back to ATT, but they say it is unlocked?
Any advice how to force the phone to use the TMOB CSC? Phone is NOT rooted. I know if I root it I can force the change. But I don't want to root it.
Thanks in advance.
Click to expand...
Click to collapse
I would use a patched ODIN and fully flash TMB firmware alongside user_data, it would be a fully factory reset but it will be T-Mobile from the very beginning.
xlylegaman said:
I would use a patched ODIN and fully flash TMB firmware alongside user_data, it would be a fully factory reset but it will be T-Mobile from the very beginning.
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Click to collapse
Ah, I did not use a patched Odin. Perhaps that is where I went wrong?
I did flash User Data.
Thank you for the suggestion!
In case this is helpful to others with the Fold 4 and the wrong CSC, I was able to change from ATT to TMOB using SamFW FRP Tool V3.1 (not the latest, but one that had a working CSC changer).
At the end it said it was rebooting, but it never did and I just manually restarted it and all was good
Flame Red said:
In case this is helpful to others with the Fold 4 and the wrong CSC, I was able to change from ATT to TMOB using SamFW FRP Tool V3.1 (not the latest, but one that had a working CSC changer).
At the end it said it was rebooting, but it never did and I just manually restarted it and all was good
Click to expand...
Click to collapse
Thanks this may help my situation
Can you flash unlock CSC to use T-Mobile on Verizon?
Hello all. I had the WI-FI toggle issue where the Wi-fi simply would not turn on. All measures were taken and finally a local Samsung authorized repair agent had to replace the motherboard which did fix that issue. But I have the model listed in the thread title but the repair shop flashed the 990U firmware on the phone upon return home. I should have realized a red flag when the repairman asked me which carrier I had because they were having an issue with the firmware taking hold. When I got it home it had firmware from November 2021 and it would not update any further.
Well I took it back and then they actually got the 990U1 part right but this time it had the wrong CSC version on it (Tracfone) XAG when I mentioned that mine was carrier unlocked upon purchase so I would want XAA. The agent said Samsung only provided them with the one they put on it???
Now there are differences between the CSC versions. When the software is released being one I have read. My current carrier is LycaMobile so would not a firmware version of XAA be ideal as that is what was provided when I originally purchased the phone and what I had requested or possibly Tmobile as that is whose towers my current carrier will use. Doesn't it also matter as possible future ESIM support and band support could be different depending on the firmware correct??
SAMMYFANNY15 said:
Hello all. I had the WI-FI toggle issue where the Wi-fi simply would not turn on. All measures were taken and finally a local Samsung authorized repair agent had to replace the motherboard which did fix that issue. But I have the model listed in the thread title but the repair shop flashed the 990U firmware on the phone upon return home. I should have realized a red flag when the repairman asked me which carrier I had because they were having an issue with the firmware taking hold. When I got it home it had firmware from November 2021 and it would not update any further.
Well I took it back and then they actually got the 990U1 part right but this time it had the wrong CSC version on it (Tracfone) XAG when I mentioned that mine was carrier unlocked upon purchase so I would want XAA. The agent said Samsung only provided them with the one they put on it???
Now there are differences between the CSC versions. When the software is released being one I have read. My current carrier is LycaMobile so would not a firmware version of XAA be ideal as that is what was provided when I originally purchased the phone and what I had requested or possibly Tmobile as that is whose towers my current carrier will use. Doesn't it also matter as possible future ESIM support and band support could be different depending on the firmware correct??
Click to expand...
Click to collapse
To change csc samfw is a free tool which allow you to change it for free
I recommend to remove sim card first .
I think s21 should support esim . I have s21 fe G990U2 and it's was locked on t-mobile . I took it to the repair shop they unlock it and after the repair I flash G990U3 on it and now my phone has 2 imei and I can use 2 physical Sims on it .
jahanzaiblohani said:
To change csc samfw is a free tool which allow you to change it for free
I recommend to remove sim card first .
I think s21 should support esim . I have s21 fe G990U2 and it's was locked on t-mobile . I took it to the repair shop they unlock it and after the repair I flash G990U3 on it and now my phone has 2 imei and I can use 2 physical Sims on it .
Click to expand...
Click to collapse
I also have the S21 FE G990U2 (MetroPCS variant). Did the OEM unlock option appear in developer options after you flashed it? I would want to un-brand my FE after I unlock it to (CSC XAA?). I would be using Mint as my carrier (T-Mobile).
No there is no oem unlock option in the developer options. It dose not support esim too . Both physical Sims are working .
I would appreciate if anyone can point me to the right direction. I have 21FE G990U2 from AT&T, It is unlocked by AT&T.
All I need is working T-Mobile firmware or Samsung (no carrier branding) to flash. I tried multiple versions of U, U1 and U3 firmwares (all matching my current Binary -4) but no success.
I just would like to get rid of ATT bloat. I know I can uninstall it via ADB but I rather have firmware clean of it.
Any suggestion please?
Thanks
So am I right to assume that you are looking for a G990U2 TMB firmware with Binary 4, to flash on a G990U2 AT&T phone?
If so, then you can download it from the below link by clicking on "Download Samfw server" (G990U2OYN4EWC3, April 2023 update):
Download Galaxy S21 FE 5G SM-G990U2 (TMB) G990U2SQS4EWC3 in Samfw - Samsung firmware download
Galaxy S21 FE 5G SM-G990U2 (TMB - United States) G990U2SQS4EWC3 T(Android 13) samsung firmware download all model, lastest, fast update, completely free and fast speed in Samfw.com ✅
samfw.com
or if I am assuming wrong, can you please correct my understanding? As I do not have any practical hands-on experience with the USA models.
Shuhan44 said:
So am I right to assume that you are looking for a G990U2 TMB firmware with Binary 4, to flash on a G990U2 AT&T phone?
If so, then you can download it from the below link directly (G990U2OYN4EWC3, April 2023 update):
https://02-samsung.cloud/v2/IxJCDiMnLh8SLAo5IRtBAzwDMyMyCB4lFzssIDs2ByAzMUEgOzEUQDMQMCMBOyw/LiUzJjIXCDkuJC8/NDseIy8xIQYzOAIlPDAVHRIvMz81CAIkMwsuOB42FA00Nh4LNS8vFjIXLA0NFzE/PAMeOTMADTkDAC4mNBEaMCExQQEhJQUUHjFCMTs4BkIjCyI/Iws8MQEWCDAeCw0xCREHOTQbIyshAD4OIQAGLC44Hiw0ER4OMiUzLDIlDSs8AD4fJhsGOg8HCkA8AywnCRc+Di8LBxAzBy4RDxYpKTwkHjUeBylCJgceKTIXIUAJER4OMi8+AwMSMBsBAzY5LwNBJi8IMAQ4MTQUAQMgLyMsHjM7JDMHLzEjJDgAISk8PxQ9NTggQiYbLyUhJCEpMjsHJzw2KSceFy4QIzEvKw8WIAYhFh4JMjAeLDQsLCM0Gy45IzgGQiMDPB0jJCI/ARYFMCMiExM=
or if I am assuming wrong, can you please correct my understanding? As I do not have any practical hands-on experience with the USA models.
Click to expand...
Click to collapse
You are correct - I need T-Mobile (or carrier free) so I can utilize full carrier settings.
Thanks for the link, however above link gives an error when opening the page.
Nevertheless I will look for TMB firmware with CSC: G990U2OYN4EWC3 and post an update here
Flashed that and still has AT&T boot logo and all the apps
h078 said:
Flashed that and still has AT&T boot logo and all the apps
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Click to collapse
Well, I am sure that you have flashed by a Factory reset (Flashed CSC, not Home CSC in ODIN). The boot logo can be changed by rooting your device, also bloatware apps can be deleted via ADB command without rooting.. but you already have mentioned that you prefer not to proceed with those processes. So I am out of suggestions, sorry.
Just for my knowledge, after flashing the TMB firmware, now your settings> About phone> software information> service provider software version: 2nd line shows as TMB/ TMB/ AT&T?
(Also corrected the download link in my previous comment anyway).
Yes, you are correct i did flash CSC, not home CSC. Then I reflashed w home CSC but software still says ATT/ATT/ATT.
Moreover on Bootloader screen says "carrier ATT" - I have never seen that before on any Samsung phone that I had. I have no clue how did they lock up device that well. As for removing software via ADB that is not a problem, but ATT locks network selection mode so you cant choose between 5G, LTE, 3G etc..
TMobile in US still supports EDGE and sometimes it comes handy - whereas ATT has only LTE and 5G as they re-farmed EDGE and 3G/HSPA frequencies
h078 said:
Yes, you are correct i did flash CSC, not home CSC. Then I reflashed w home CSC but software still says ATT/ATT/ATT.
Moreover on Bootloader screen says "carrier ATT" - I have never seen that before on any Samsung phone that I had. I have no clue how did they lock up device that well. As for removing software via ADB that is not a problem, but ATT locks network selection mode so you cant choose between 5G, LTE, 3G etc..
TMobile in US still supports EDGE and sometimes it comes handy - whereas ATT has only LTE and 5G as they re-farmed EDGE and 3G/HSPA frequencies
Click to expand...
Click to collapse
I do not get why the CSC can never be changed, even after flashing the complete firmware... must be an ATT thing!
Anyway, to change the csc only, there is another very quick & easy method. It takes only 2/3 minutes; no flash or factory reset is required. You have to download and install a small software "SamFW Tool" on your pc/laptop (may need to disable the antivirus during the download/install process). Once done, connect the phone and enable USB debugging mode. Open the software, under the ADB tab, click Change CSC, from the dropdown list select TMB and click Change. The phone will restart and CSC "Should" change to TMB/TMB/ATT.
Here is the download link for the software:
https://www.mediafire.com/file/upaiwadhmstm6js/SamFwToolSetup_v4.6.zip/file
That did the trick. I have T-Mobile CSC now
Thanks a lot
h078 said:
That did the trick. I have T-Mobile CSC now
Thanks a lot
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Click to collapse
Great!
But still, that's only one part of the final solution I think. Your target was to replace the complete firmware from ATT to TMB, right? Since the CSC is now changed to TMB, I think you can give it another try via ODIN to install the TMB firmware now (only if you want). I am not confident that it will work now, but still, one last try should not be much of a hassle.
I think that these multi CSC contain all US carrier customizations....When I changed it to TMB it shows TMB/TMB/ATT and loads bootlogo as well as TMobile apps... I guess it is similar as Blackberry used to be back in the days...Depending which carrier SIM used it loaded proper settings from the firmware...
I have flash my METROPCS G990U2 to G990U3,other sim card work fine,but t mobile sim card does not work ,can someone help me?I already change CSC to xxa,but still no internet,I do have sginal bar