Question What sub model of Samsung Galaxy s21 ultra is best for installing alternative OS? - Samsung Galaxy S21 Ultra

Greetings everyone.
Advice is needed for the following situation.
It is time to buy a new cell phone.
My research resulted in Samsung Galaxy s21 ultra. The idea is when the phone is no longer supported by Samsung company ( it seems it is 2025) , to install different OS and keep using it.
Three questions:
1. Is this idea possible & practical?
2. What are the pros and cons of installing different OS in this case?
3. What submodel of Samsung Galaxy s21 ultra is the most appropriate for the above mentioned exercise?
Located in USA.
Thank you
Regards,
D.

When you say install a different OS, which Operating Systems would be compatible? Something like a Unix type OS? It's going to be Android, that's it. You're not talking about a pair of shoes. Thinking what you might want to have in a device after 2025 is pretty speculative, right?

Android

lineage os

Dimkita said:
lineage os
Click to expand...
Click to collapse
Lineage OS is supported on any S21 but to install it you'll have to aquire a device with an unlocked bootloader. Preferably a new device, if a used device has been updated the bootloader is likely locked. To me it's not a practical solution, you'll lose a number of features once the bootloader is unlocked plus the Linage OS doesn't offer security updates. The only real plus for Linage OS is you'll have an Android device without all the Google add-ons. The S21 has fewer issues than the S22 and I would recommend you avoid Android 12 on any new device.

Understood and thank you.
What submodel of s21 ultra is bootloader Unlocked?
Thank you

Dimkita said:
Understood and thank you.
What submodel of s21 ultra is bootloader Unlocked?
Thank you
Click to expand...
Click to collapse
SM-G9980
This model has the Snapdragon Chipset, Android 11 and an Unlocked Bootloader. I've shared a link for a retailer via PM. Good luck!

varcor said:
SM-G9980
This model has the Snapdragon Chipset, Android 11 and an Unlocked Bootloader. I've shared a link for a retailer via PM. Good luck!
Click to expand...
Click to collapse
Thank you

Related

Flashing different region stock from 960N (Korea) to 960F (Asia)

The specs for both models are same including CPU but 960F (Asia) support DUAL sim whereas Korea only SINGLE sim.
If I odin 960F to my Korea model phone, will it still work? or probably freeze on E.g. Settings when I click Sim 2?
How about the Samsung Pay?
If firmware 960F can work, can I use Samsung Pay in Asia? or they are some in-built mechanism E.g. Knox that will prevent this?
Same question. I have a SCV38 - Japanese KDI/AU Galaxy S9. I have only Android 9, but there are a bunch of US Snapdragon Galaxy S9 based on Android 10. Can I flash this (US firm on JP phone)? I just want to get to Android 10. I have a feeling that wont work, and I checked for the S8 - US and JP phones, altough based on QC chipset had other hardware differences...
Anyway, appreciate any advice on the matter.
Do you have solution? I have same problem
BusterSG said:
The specs for both models are same including CPU but 960F (Asia) support DUAL sim whereas Korea only SINGLE sim.
If I odin 960F to my Korea model phone, will it still work? or probably freeze on E.g. Settings when I click Sim 2?
How about the Samsung Pay?
If firmware 960F can work, can I use Samsung Pay in Asia? or they are some in-built mechanism E.g. Knox that will prevent this?
Click to expand...
Click to collapse
As long as the specs are the same you can flash any region rom. You will just have to try it yourself and see if both sims work. Google pay shouldn't have any problems. The only problem you might have is some roms have different baseband files so you might not get network connection if it's not right for your region.
velqn said:
Same question. I have a SCV38 - Japanese KDI/AU Galaxy S9. I have only Android 9, but there are a bunch of US Snapdragon Galaxy S9 based on Android 10. Can I flash this (US firm on JP phone)? I just want to get to Android 10. I have a feeling that wont work, and I checked for the S8 - US and JP phones, altough based on QC chipset had other hardware differences...
Anyway, appreciate any advice on the matter.
Click to expand...
Click to collapse
Make sure in download mode you don't have RMM prenormal if you flash Android 10 and it's prenormal you will never be able to get rid of it.
velqn said:
Same question. I have a SCV38 - Japanese KDI/AU Galaxy S9. I have only Android 9, but there are a bunch of US Snapdragon Galaxy S9 based on Android 10. Can I flash this (US firm on JP phone)? I just want to get to Android 10. I have a feeling that wont work, and I checked for the S8 - US and JP phones, altough based on QC chipset had other hardware differences...
Anyway, appreciate any advice on the matter.
Click to expand...
Click to collapse
hey bro, is your problem solved, cause i have sam problem too
Yes, I flashed a global version/German DBT at it was OK, but had to unlock the phone, cause it was sim locked...
velqn said:
Yes, I flashed a global version/German DBT at it was OK, but had to unlock the phone, cause it was sim locked...
Click to expand...
Click to collapse
can you please provide firmware link to download. as i too wanted to change my firmware of scv38 kdi au model to remove bloatware. and what would be the trwrp installation procedure then? please adivse.
I dont have that rom or link anymore but my guess is - go to sam mobiles firmware section and they should have it.
velqn said:
I dont have that rom or link anymore but my guess is - go to sam mobiles firmware section and they should have it.
Click to expand...
Click to collapse
bro where did you download firmware ? cause my scv38 is bootloop

Samsung S10 G973U downgrade

Hi. I have a Samsung S10 (G973U) from T-Mobile. I am currently on Android 10, update February 2020 (G973USQS3CTA3)
I need to go back to android version 9. Can you tell me the firmware to download? I am BIT 3.
Wolfgang_111 said:
Hi. I have a Samsung S10 (G973U) from T-Mobile. I am currently on Android 10, update February 2020 (G973USQS3CTA3)
I need to go back to android version 9. Can you tell me the firmware to download? I am BIT 3.
Click to expand...
Click to collapse
Unfortunately, you're on v3 bootloader and cannot go back to Android 9 as that is on v2 and older.
Re
Is it possible to perform this downgrade if I unlocked the bootloader/rooted the device?
jxnhdn said:
Is it possible to perform this downgrade if I unlocked the bootloader/rooted the device?
Click to expand...
Click to collapse
If you have a G973U like the OP, then a million posts would let you know it's not rootable.
Can it be downgraded from 11 to 10?
only if your on the same bootloader version "whitch I think is V4"
its likely your phone is on a later version
Tel864 said:
If you have a G973U like the OP, then a million posts would let you know it's not rootable.
Click to expand...
Click to collapse
Since this thread comes up in searches, I thought it would be good to add that as of now, the Snapdragon 973U can be rooted. The bootloader can be unlocked if it is version 4 or less. There are threads on XDA that tell how.
Feenix0 said:
Can it be downgraded from 11 to 10?
Click to expand...
Click to collapse
I am also looking for this option to try Resurrection Remix ROM. Anyone knows what is the last version of bootloader for Android 10?
Doman said:
I am also looking for this option to try Resurrection Remix ROM. Anyone knows what is the last version of bootloader for Android 10?
Click to expand...
Click to collapse
For the beyond1qlte (Galaxy S10 SM-G973U Qualcomm) the latest bootloader version is 6 afaik.
To check your bootloader version look at 5th character from the right of your Android build number.
Examples:
bootloader version 5: N970USQS5EUA1
bootloader version 6: N970USQU6FUB7
Neither of those can be unlocked. As I said above, you need to be on 4 or earlier to unlock the bootloader on this device. @afaneh92 can give you more info.
EDIT: Oh, sorry. I misread your question. I don't know the last BL version for 10.
MtnX2 said:
For the beyond1qlte (Galaxy S10 SM-G973U Qualcomm) the latest bootloader version is 6 afaik.
To check your bootloader version look at 5th character from the right of your Android build number.
Examples:
bootloader version 5: N970USQS5EUA1
bootloader version 6: N970USQU6FUB7
Neither of those can be unlocked. As I said above, you need to be on 4 or earlier to unlock the bootloader on this device. @afaneh92 can give you more info.
EDIT: Oh, sorry. I misread your question. I don't know the last BL version for 10.
Click to expand...
Click to collapse
He can flash android 10 if he is on rev 4 or below
Doman said:
I am also looking for this option to try Resurrection Remix ROM. Anyone knows what is the last version of bootloader for Android 10?
Click to expand...
Click to collapse
According to https://www.sammobile.com/samsung/galaxy-s10/firmware/#SM-G973U latest USA Android 10 firmware had bootloader 4 (per the check MtnX2 mentioned). You can look at other countries if you are not in the USA.
On Snapdragon phones, you cannot downgrade the bootloader, so if you're already on Android 11 or a newer bootloader, you're stuck there and cannot go to an older version.
schwinn8 said:
On Snapdragon phones, you cannot downgrade the bootloader, so if you're already on Android 11 or a newer bootloader, you're stuck there and cannot go to an older version.
Click to expand...
Click to collapse
I recently purchased (from ebay) a Galaxy S10 with Android 11 and bootloader version 4, and I was able to unlock the bootloader and install a custom ROM. It wasn't easy to find the device because now most S10s are updated.
Image attached showing Android 11 and BL v4.
schwinn8 said:
According to https://www.sammobile.com/samsung/galaxy-s10/firmware/#SM-G973U latest USA Android 10 firmware had bootloader 4 (per the check MtnX2 mentioned). You can look at other countries if you are not in the USA.
On Snapdragon phones, you cannot downgrade the bootloader, so if you're already on Android 11 or a newer bootloader, you're stuck there and cannot go to an older version.
Click to expand...
Click to collapse
I have an Exynos from Europe, already at Android 11 with bit v14... the latest one. I have found some older bootloader, but flashing with Odin was refused, with TWRP flasing process was successful, but it did not change the bit... so I guess I stuck with Android 11.
Doman said:
I have an Exynos from Europe, already at Android 11 with bit v14... the latest one. I have found some older bootloader, but flashing with Odin was refused, with TWRP flasing process was successful, but it did not change the bit... so I guess I stuck with Android 11.
Click to expand...
Click to collapse
I believe Exynos can still be downgraded. The process is different for Exynos vs Snapdragon, so you may want to look into it more deeply... you just have to find Exynos-specific threads for the matter.
Doman said:
I have an Exynos from Europe, already at Android 11 with bit v14... the latest one. I have found some older bootloader, but flashing with Odin was refused, with TWRP flasing process was successful, but it did not change the bit... so I guess I stuck with Android 11.
Click to expand...
Click to collapse
Its not exynos thread, but will answer you.
You can flash firmware has same bootloader rev, I assume 14=E
So only firmware with E on 5th character from the right on build number.

S20 FE flash/rom

Hi, I apologize if this is easy info to find, I have tried to search but have been unsuccessful.
I have an unlocked s20fe, I am missing some vzw features, mainly video calling. Can anyone tell me...
1. Is it possible to flash this device
2. Can I find a vzw official rom? Or one based off of it?
I have been out of the rom/root game since back in the days of the note 3 and razr Maxx. So I apologize for my current ignorance.
Thank you for your help!
The US Variants of the Galaxy phones cannot have an unlocked bootloader = no root.
everlasting207 said:
The US Variants of the Galaxy phones cannot have an unlocked bootloader = no root.
Click to expand...
Click to collapse
Not true. There are paid services that will unlock the bootloader, though folks may not be comfortable with the method and price.
Superguy said:
Not true. There are paid services that will unlock the bootloader, though folks may not be comfortable with the method and price.
Click to expand...
Click to collapse
How about a vzw rom? Any link to a reputable service? None of the devices that I used in the past had "unlocked bootloaders". They were all dependant upon an exploit that someone took advantage of, so not really concerned if it is not an 'official' unlock. Thanks for the help!
Bump for a link?
Is EU version SM-G780FZBDEUB rootable? I am buying unlocked https://d.pr/i/vwfVEY. If it isnt then perhaps I will go with Oneplus 8T
Go for 8t

How to root S20 FE 5G Android 11 snapdragon One UI 3.0 SM-G781B/DS [Solved]

Hey!
So recently i've been searching how to root my device which is S20 FE 5G Android 11 snapdragon One UI 3.0 SM-G781B/DS
I haven't found any tutorials on how to unlock the bootloader or rooting it with my exact same one ui and android version
Could someone link me the sources/articles/videos to them as I haven't rooted a device for a long time now, and I dont want to brick my phone
Thank you in advanced
EDllT said:
Hey!
So recently i've been searching how to root my device which is S20 FE 5G Android 11 snapdragon One UI 3.0 SM-G781B/DS
I haven't found any tutorials on how to unlock the bootloader or rooting it with my exact same one ui and android version
Could someone link me the sources/articles/videos to them as I haven't rooted a device for a long time now, and I dont want to brick my phone
Thank you in advanced
Click to expand...
Click to collapse
How To Root Samsung Galaxy S20 FE (SM-G780F) & Install Magisk - NaldoTech
Follow the guide below to root your Samsung Galaxy S20 FE (Fan Edition) and install Magisk Manager. The developer behind Magisk, topjohnwu, released a Magisk
www.naldotech.com
The instructions apply to the FE 5G
bininga59 said:
How To Root Samsung Galaxy S20 FE (SM-G780F) & Install Magisk - NaldoTech
Follow the guide below to root your Samsung Galaxy S20 FE (Fan Edition) and install Magisk Manager. The developer behind Magisk, topjohnwu, released a Magisk
www.naldotech.com
The instructions apply to the FE 5G
Click to expand...
Click to collapse
Just to confirm the link you've sent me says "(SM-G780F)" but my model is "SM-G781B/DS" you're aware of that right?
EDllT said:
Just to confirm the link you've sent me says "(SM-G780F)" but my model is "SM-G781B/DS" you're aware of that right?
Click to expand...
Click to collapse
The principle is always the same. I also have a G781B and have done it that way too.
bininga59 said:
The principle is always the same. I also have a G781B and have done it that way too.
Click to expand...
Click to collapse
Hey so, tyvm my phone has been rooted successfully.
After I've rooted my phone I searched a method to flash twrp but I couldn't find any in their official site https://twrp.me/Devices, is there a twrp for this model?
EDllT said:
Hey so, tyvm my phone has been rooted successfully.
After I've rooted my phone I searched a method to flash twrp but I couldn't find any in their official site https://twrp.me/Devices, is there a twrp for this model?
Click to expand...
Click to collapse
Look here:
[RECOVERY][UNOFFICIAL] TWRP for Galaxy S20 FE 5G (Snapdragon)
Team Win Recovery Project 3.x, or twrp3 for short, is a custom recovery built with ease of use and customization in mind. Its a fully touch driven user interface no more volume rocker or power buttons to mash. The GUI is also fully XML driven and...
forum.xda-developers.com
EDllT said:
Hey so, tyvm my phone has been rooted successfully.
After I've rooted my phone I searched a method to flash twrp but I couldn't find any in their official site https://twrp.me/Devices, is there a twrp for this model?
Click to expand...
Click to collapse
I just wanted to ask if the fingerprint lock works after rooting? Since it is powered by knox and from what I've read, rooting trips knox and all its services. Please guide.
fingerprint working fine here, rooted with TWRP!
3mel said:
fingerprint working fine here, rooted with TWRP!
Click to expand...
Click to collapse
same.
b1k3rdude said:
same.
Click to expand...
Click to collapse
iamsiddharthmall said:
I just wanted to ask if the fingerprint lock works after rooting? Since it is powered by knox and from what I've read, rooting trips knox and all its services. Please guide.
Click to expand...
Click to collapse
Works flawlessly
bininga59 said:
How To Root Samsung Galaxy S20 FE (SM-G780F) & Install Magisk - NaldoTech
Follow the guide below to root your Samsung Galaxy S20 FE (Fan Edition) and install Magisk Manager. The developer behind Magisk, topjohnwu, released a Magisk
www.naldotech.com
The instructions apply to the FE 5G
Click to expand...
Click to collapse
Hi, i checked those instructions and for unlocking the bootloader, it appears not to be an option for those of us with G781W (Canada version). Am I out of luck for now? Device shipped with latest firmware.
EDllT said:
Hey so, tyvm my phone has been rooted successfully.
After I've rooted my phone I searched a method to flash twrp but I couldn't find any in their official site https://twrp.me/Devices, is there a twrp for this model?
Click to expand...
Click to collapse
Hii,I'm using the indian S20 FE 5g(SD 865).So basically i should unlock boot loader,boot to system and connect to internet and verify oem unlock greyed out.Then patch boot.img and flash it through odin.That's it? no need to flash any other files like patched vb meta etc? waiting for your reply,thanks!
kogkita said:
Hii,I'm using the indian S20 FE 5g(SD 865).So basically i should unlock boot loader,boot to system and connect to internet and verify oem unlock greyed out.Then patch boot.img and flash it through odin.That's it? no need to flash any other files like patched vb meta etc? waiting for your reply,thanks!
Click to expand...
Click to collapse
tried this,gave bootloop ,had to flash stock
kogkita said:
tried this,gave bootloop ,had to flash stock
Click to expand...
Click to collapse
follow a guide on the process, there's a format of the data partition involved for bootloader unlock, for magisk and for internal memory encryption removal.
if you want root without TWRP follow this guide https://topjohnwu.github.io/Magisk/install.html
if you want root AND TWRP visit the kernels recoveries and roms section, see afaneh92's TWRP thread for snap dragon.
read and read again until you've got a rough idea what you need to do. make sure you've got everything you'll need before you start.
3mel said:
fingerprint working fine here, rooted with TWRP!
Click to expand...
Click to collapse
Hey bro, idk if you will read this but i really need help with rooting an S20 FE Snapdragon. I was decided to buy an S20 Plus Snapdragon, SM-G986U, I was ready for purchasing it but just days ago I noticed in many forums here that S20 Snapdragon couldn't be rooted, only Exynos based in, so as the S20 Plus couldn't be I thought S20 FE would be the same, but reading all the replies here I think I have a hope now. I want root because I play Fortnite Mobile and root allows me to unlock 90 fps on any device. I really hope you can help me, of this depends if I purchase a new phone or not lol.
I thought u could please help me in root process of S20 FE or maybe S20 Plus if it's possible.
marcelo_aeme said:
Hey bro, idk if you will read this but i really need help with rooting an S20 FE Snapdragon. I was decided to buy an S20 Plus Snapdragon, SM-G986U, I was ready for purchasing it but just days ago I noticed in many forums here that S20 Snapdragon couldn't be rooted, only Exynos based in, so as the S20 Plus couldn't be I thought S20 FE would be the same, but reading all the replies here I think I have a hope now. I want root because I play Fortnite Mobile and root allows me to unlock 90 fps on any device. I really hope you can help me, of this depends if I purchase a new phone or not lol.
I thought u could please help me in root process of S20 FE or maybe S20 Plus if it's possible.
Click to expand...
Click to collapse
what country are you in ?
if you're in the US or Canada you won't be able to root now sadly. in other countries the FE with snapdragon or Exynos can both rooted
HOWEVER... if you want a 90fps refresh rate then NONE of the FE models support it, the hardware physically cannot do it. it's 60 or 120 nothing else.
Is there root for SM-G781U1/DS? It's an unlocked S20FE using Verizon.
3mel said:
what country are you in ?
if you're in the US or Canada you won't be able to root now sadly. in other countries the FE with snapdragon or Exynos can both rooted
HOWEVER... if you want a 90fps refresh rate then NONE of the FE models support it, the hardware physically cannot do it. it's 60 or 120 nothing else.
Click to expand...
Click to collapse
Is there a current list of which versions can be unlocked and rooted? AT&T in the US recently added a number of international models to its whitelist.
hack.causality said:
Is there a current list of which versions can be unlocked and rooted? AT&T in the US recently added a number of international models to its whitelist.
Click to expand...
Click to collapse
Samsung mostly sells snapdragon flagship phones in the US and Canada, they're only locked because Samsung does what the US carriers want. but Samsung also only usually sells the snapdragon versions of it's phones in America, Canada and Asia. people think all snapdragons can't be rooted but that's not true.
if you buy a snapdragon Samsung from outside of the US or Canada you'll be be able to root it. if you buy an FE in the states you WON'T be able to unlock it, it's all about where you buy the phone.
Jbenny007 said:
Is there root for SM-G781U1/DS? It's an unlocked S20FE using Verizon.
Click to expand...
Click to collapse
sadly no.

Question Flash T-Mobile firmware on unlocked S21 ultra

I'll admit I'm a noob, but I was wondering if there were guides or a way to flash the official T-Mobile carrier firmware on an unlocked s21 ultra by chance? If anyone can point me in the right direction please. Thank you and sorry if it's a dumb question.
fil.lujan said:
I'll admit I'm a noob, but I was wondering if there were guides or a way to flash the official T-Mobile carrier firmware on an unlocked s21 ultra by chance? If anyone can point me in the right direction please. Thank you and sorry if it's a dumb question.
Click to expand...
Click to collapse
The SM-G998U1 is Multi-CSC Device (OYN). Change the CSC to TMO by entering the following code on the TouchPad. *#272*YOURIMEINUMBER# Select TMO then install.
varcor said:
The SM-G998U1 is Multi-CSC Device (OYN). Change the CSC to TMO by entering the following code on the TouchPad. *#272*YOURIMEINUMBER# Select TMO then install.
Click to expand...
Click to collapse
I had tried that, it states "unable to process request" Appreciate your help though.
fil.lujan said:
I had tried that, it states "unable to process request" Appreciate your help though.
Click to expand...
Click to collapse
Is it a US Device (Snapdragon)?
varcor said:
Is it a US Device (Snapdragon)?
Click to expand...
Click to collapse
Yes. Sm-g998u1
fil.lujan said:
Yes. Sm-g998u1
Click to expand...
Click to collapse
Apparently I read with android 11 changing csc isn't allowed?
fil.lujan said:
Apparently I read with android 11 changing csc isn't allowed?
Click to expand...
Click to collapse
If that's the case you can download Tmobile firmware and flash to your device.
downloading/flashing Tmobile firmware to S20Ultra unlocked
I really want Tmobile's advanced messaging feature back. I downloaded Frija (to download the firmware images) My assumption is that since I have model number SM-G988U1 and want to flash tmobile's firmware I need to use SM-G988U with CSC as TMB to download the correct firmware. Is this...
forums.androidcentral.com
fil.lujan said:
Apparently I read with android 11 changing csc isn't allowed?
Click to expand...
Click to collapse
Haven't read that, this post may help.
[GUIDE] Change your CSC on any Samsung Galaxy devices running Android 10 or older - will also work in Android 11 for builds older than January 2021
Hello everyone! I made this video tutorial regarding changing the CSC on your Samsung Galaxy device. This method will work for Android 10 and older, and Android 11 (builds older than January 2021). Credits to...
forum.xda-developers.com
varcor said:
If that's the case you can download Tmobile firmware and flash to your device.
downloading/flashing Tmobile firmware to S20Ultra unlocked
I really want Tmobile's advanced messaging feature back. I downloaded Frija (to download the firmware images) My assumption is that since I have model number SM-G988U1 and want to flash tmobile's firmware I need to use SM-G988U with CSC as TMB to download the correct firmware. Is this...
forums.androidcentral.com
Haven't read that, this post may help.
[GUIDE] Change your CSC on any Samsung Galaxy devices running Android 10 or older - will also work in Android 11 for builds older than January 2021
Hello everyone! I made this video tutorial regarding changing the CSC on your Samsung Galaxy device. This method will work for Android 10 and older, and Android 11 (builds older than January 2021). Credits to...
forum.xda-developers.com
Click to expand...
Click to collapse
Thank you for your input, I'll check those out. Appreciate you writing and posting these.
fil.lujan said:
Thank you for your input, I'll check those out. Appreciate you writing and posting these.
Click to expand...
Click to collapse
Once last question, forgive my ignorance. Once I flash from the unlocked version to the T-Mobile branded firmware, will I need to manually flash each update that comes out for T-Mobile do you know?
fil.lujan said:
Once last question, forgive my ignorance. Once I flash from the unlocked version to the T-Mobile branded firmware, will I need to manually flash each update that comes out for T-Mobile do you know?
Click to expand...
Click to collapse
You SHOULD receive Tmobile updates once you're on Tmobile firmware and network but I don't think it's something that can be guaranteed. Your Primary CSC can't be changed to TMO and therin lies the problem. In the last couple of years Samsung has complicated firmware and CSC transitions on it's numerous array of devices. Lots of potential users lean to an unlocked device thinking they'll have more freedom of choice but it won't always end up as a benefit. I always recommend buying your service provider's device for full functionality but it doesn't always work out since some users tend to swap service provider's on a regular basis.
I'm on T-mobile's network, month to month, no long term commitment which adds flexibility but even being on their network I didn't aquire their Branded Device. I have the Hong Kong SM-G9980 variant. I couldn't care less about 5G, to me it's the biggest marketing scam since light beer. The only other feature I lose is Carrier Aggregation which much like 5G enables faster download speeds. I can easily have my laptop handle this and transfer files or data to my device. So there's no carrier bloatware, the bootloader is unlocked, I get updates from Samsung typically sooner than US devices and still have Wi-Fi Calling and VoLTE via Tmobile. Most users don't do much research to define which device is best suited for their needs. "I got this great deal on an S21 Ultra but..." We can point the finger at Samsung as well, way too many variants leads to a lot of problems.
varcor said:
You SHOULD receive Tmobile updates once you're on Tmobile firmware and network but I don't think it's something that can be guaranteed. Your Primary CSC can't be changed to TMO and therin lies the problem. In the last couple of years Samsung has complicated firmware and CSC transitions on it's numerous array of devices. Lots of potential users lean to an unlocked device thinking they'll have more freedom of choice but it won't always end up as a benefit. I always recommend buying your service provider's device for full functionality but it doesn't always work out since some users tend to swap service provider's on a regular basis.
Click to expand...
Click to collapse
One last question. In order to go from the Samsung unlocked version to flash the TMobile firmware, does the bootloader need to be unlocked? Sorry for the numerous questions
fil.lujan said:
One last question. In order to go from the Samsung unlocked version to flash the TMobile firmware, does the bootloader need to be unlocked? Sorry for the numerous questions
Click to expand...
Click to collapse
No
varcor said:
No
Click to expand...
Click to collapse
Thank you so much for all your help. I do appreciate you.
Hello did it work out?
TwistedTester said:
Hello did it work out?
Click to expand...
Click to collapse
It did actually. Noticing my speeds are a bit faster and more consistent and getting rcs through Samsung messages to people even using Google messages on other carriers
fil.lujan said:
It did actually. Noticing my speeds are a bit faster and more consistent and getting rcs through Samsung messages to people even using Google messages on other carriers
Click to expand...
Click to collapse
What did you do? What were the steps to flashing new csc? I’m on Verizon and I wanna go over to T-Mobile
TwistedTester said:
What did you do? What were the steps to flashing new csc? I’m on Verizon and I wanna go over to T-Mobile
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I downloaded the firmware from SamMobile and Odin then flashed it. I had the unlocked version I purchased from Samsung directly. when selecting the csc portion but it still shows the xaa portion as well. Not sure if I did it wrong but seems to be working for me. Putting it in download mode requires holding volume up/down and power. Every site I visited told the wrong directions
fil.lujan said:
I downloaded the firmware from SamMobile and Odin then flashed it. I had the unlocked version I purchased from Samsung directly. when selecting the csc portion but it still shows the xaa portion as well. Not sure if I did it wrong but seems to be working for me. Putting it in download mode requires holding volume up/down and power. Every site I visited told the wrong directions
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Oh okay okay, did you have to use Sam key after to switch csc? No right cause T-Mobile already worked.
TwistedTester said:
Oh okay okay, did you have to use Sam key after to switch csc? No right cause T-Mobile already worked.
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No I just did the firmware. Didn't do anything else with csc. Heard that's a pain in the ass with android 11

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