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TMOBILE GALAXY S8+ to Verizon, help

I have a carrier unlocked TMOBILE S8+ , not rooted, Is it possible to flash firmware of verizon or an unlocked firmware and move my service to VERIZON? please help! thanks, do i need to root?

Why would you need to flash anything other than wanting certain carrier apps? You just said that your phone is carrier unlocked. Which means you can take it to a different carrier.

Possible to go from Sprint G960U to AT&T G960U

I successfully went to 2ARF4 on this and it's now a G960U1 but I'd like the AT&T wifi calling, is it possible to flash the AT&T software to gain that or does it have to be a AT&T branded device for their system to register it? If it's possible which OS version should I get, I don't see a ATT version of the one that's on here or anything that would be the alternative.

You can get Sprint S9 or S9+ variant unlocked through Ebay:
https://m.ebay.com/itm/SPRINT-SAMSU...?_trksid=p3984.m1561.l2649&_mwBanner=1&_rdt=1
Also can do Bad IMEI devices also.
After you're unlocked should convert to ATT software when you insert sim.
Sent from my SM-G955U1 using Tapatalk

It hasn't converted to AT&T software on the U1 firmware I flashed. That's why I started the thread to see if anyone else has been able to
Sent from my SM-G960U1 using Tapatalk

First SIM unlock the phone...
Then, Use an unlocked and generic firmware like g960usqs3brj6 and flash with newest Odin.... Use csc NOT home csc and do NOT insert a SIM....
Factory reset, boot phone and setup to home screen... Then just pop in an AT&T sim and click restart device. It should install everything you need for att. I am running att video calling and all other features on my g960u with the above firmware and have no problems... Lists ATT/ATT/SPR under service provider now... Good Luck!

Need some help on what firmware I need to get to flash S9 from sprint to unlocked.

So i'm going to payoff my sprint S9 and move to att. I'm eligible for the Firstnet plan and i'm going to get the Note 9 BYGO for me and the wife. I figured id have an easier time selling my s9 if it was just on the regular firmware.
So my current sprint s9 firmware is G960USQU3ARH3.
Am I correct that I would need 960u1ues2arh3 to beable to flash it to the regular unlocked?
I know i need ARH3 or newer but I don't know if the unlocked firmware version i have is correct or not. Sammobile dosent have the ARH3 listed yet.

bjl95mustang said:
So i'm going to payoff my sprint S9 and move to att. I'm eligible for the Firstnet plan and i'm going to get the Note 9 BYGO for me and the wife. I figured id have an easier time selling my s9 if it was just on the regular firmware.
So my current sprint s9 firmware is G960USQU3ARH3.
Am I correct that I would need 960u1ues2arh3 to beable to flash it to the regular unlocked?
I know i need ARH3 or newer but I don't know if the unlocked firmware version i have is correct or not. Sammobile dosent have the ARH3 listed yet.
Click to expand...
Click to collapse
You cannot flash Bootloader 2 files on 3 (BL number is the 4th number from right)
You need to wait till BL3 file is available

Thats what I thought.
Thanks

Thanks also. This helped allot.

Verizon carrier unlocked s20 plus to Tmobile band 71

I have a verizon s20 plus that was carrier unlocked by verizon and I want to give it to someone with T-Mobile. If I flash it with T-Mobile or unlocked firmware will that enable lte band 71?

pj1980 said:
I have a verizon s20 plus that was carrier unlocked by verizon and I want to give it to someone with T-Mobile. If I flash it with T-Mobile or unlocked firmware will that enable lte band 71?
Click to expand...
Click to collapse
Yes, it should. IF your VZW S20 is already updated to android 11 you'll probably have to downgrade it android 10 , at least I did. To get to TMobile flash Android 10 unlocked on top of the VZW firmware. Let it boot all the way up, insert TMobile SIM, you should get a pop up saying carriers settings need to update or some such, and ask you to reboot. After you've rebooted power off, boot to download mode and flash the TMobile firmware.
You could probably leave it on the unlocked if you wanted. I've just had better signal strength with the TMobile firmware.

Samsung S20 Ultra ATT to Unlock Firmware

Hello,
My service provider is t-mobile. I'm trying to swap my at&t S20 ultra SM-G988U to an unlocked firmware but I'm not sure which SM-G988U1 to choose. Any suggestions? Do I choose U1 USA or U1 USA\T-mobile? I thought U1 were all unlocked so I'm not sure what U1 USA\T-mobile is or if I should choose that
Thanks

I put U1 USA\T-mobile version 11 on and was able to get OTA updates to version 12. I tried flashing a newer version of 12 with a XAA CSC but it didn't take, Odin said pass but nothing changed, still 1 patch behind and CSC was TMO. So I left it alone. A problem for another day... if TMO stops patching it. The phone is on samsung firmware now and it works great. Just 1 patch behind.