Would it be possible for me to flash atts N950USQ5CRF6 firmware over atts N950U1UES5CSB1.
The phone was originally Sprint, which I carrier switched to att and installed atts u1 firmware. I am wanting to do this to see if any service improvements, WiFi calling, etc.
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I was wondering if anyone knows if we can flash stock T-Mobile onto the AT&T G925A? Main reason I am trying to figure this out is for WIFI calling.
Maybe if its possible to odin the tmobile stock rom and the odin the at&t kernel?
WiFi calling only works on tmobile branded phones far as I know
thanks for the commenting..
Hello XDA!
I'd like to buy a Note 5 to use on AT&T but I'd like to have all carrier logos and bloatware removed without rooting. I found that the N920C has no carrier branding or any applications, however it has some LTE issues on AT&T.
I know this post is under the Note 5 but here's what I experienced with an S7.
I wanted to acheive the same goal on my S7 by flashing the unlocked firmware, and it worked. I installed G930U firmware on a G930A by flashing CP & BL from the A firmware and AP & CSC from U, given that they both are on the same version. (I downloaded the G930U firmware off Sammobile which said G930U AT&T, so I'm assuming it contains the AT&T modem and bootloader, since it mentions AP and CSC to be G930U). I've been using it since, and I get LTE just fine, even LTE+, though I lost a few carrier features like VoLTE and WiFi calling.
I read that the reason why this worked is because the hardware is identical across all S7s, and that the software is what enables certain radio bands. Is this true? I've always had the notion that different carriers have different hardware. I also read that the bootloader is locked. Would that be a concern while flashing official firmware? It's worked for me so I'm a bit confused.
Anyways, my main question is: will this work on a Note 5? Is it possible to buy an N920A and flash N920C AP & CSC with CP & BL from the ATT firmware? Will the modem inside the N920A designed for the AT&T frequencies be enabled while under the N920C + ATT modem & bootloader hybrid?
On the subject of hardware, if all Note 5s are the same internally, could I do this to any other carrier phone like a N920P instead of an N920A?
Apologies for the wall of text. I wanted to provide as much information as I can.
Update
I ended up buying an N920i as other users here have reported compatibility with AT&T.
I originally bought and used this phone on AT&T. I have since moved to Mint Mobile which runs on the T-Mobile network. Some features (like wifi calling) would be availible if I had a T-Mobile rom instead of an AT&T rom.
Is there any physical difference in the Phones (baseband, kernel etc.) that would preclude me from using Odin to flash an official G920T rom on my phone?
You can see from my signature I haven't been here for a while .. lol
Thanks in advance
bobshute said:
I originally bought and used this phone on AT&T. I have since moved to Mint Mobile which runs on the T-Mobile network. Some features (like wifi calling) would be availible if I had a T-Mobile rom instead of an AT&T rom.
Is there any physical difference in the Phones (baseband, kernel etc.) that would preclude me from using Odin to flash an official G920T rom on my phone?
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G920A has Band 30 antennas, while G920T does not. Locked bootloader on G920A will prevent you from flashing G920T firmware. It's not like the S7 where the hardware is identical and software locked.
You can do the reverse, though: flash G920A firmware over G920T as unsigned firmware. But you still won't get Band 30 as it is physically not present.
I am trying to flash ATT's firmware to a U1 or U phone but CSC does not change. In software details I see XAA/XAA/XAC while I should be seeing ATT/ATT/XAC. I am on CSL1 firmware (android 10).
Did samsung change something in Android 10? I have done that in S8/S9/note 9 and I never had problems
prince_72 said:
I am trying to flash ATT's firmware to a U1 or U phone but CSC does not change. In software details I see XAA/XAA/XAC while I should be seeing ATT/ATT/XAC. I am on CSL1 firmware (android 10).
Did samsung change something in Android 10? I have done that in S8/S9/note 9 and I never had problems
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Click to collapse
i flashed the XAA U1 on my S9 and its showing AIO(Cricket) in my software from service provider area and it did this as soon as it saw the SIM
Do you have VoLTE and Wifi calling on U1? I am flashing the U from AT&T just because I want the wifi calling and VoLTE. In U firmwares I see that CSC does not change now
I don't get why I can easily get WiFi Calling and VOLTE with the unlocked version using Verizon or TMo but not with AT&T... Very frustrating as their signal is awful inside my home...
I finally switched to Verizon for service but should not have too.
Hope you can make it work!
Sent from my SM-G973U1 using Tapatalk
Verizon is my carrier and I am upgrading to an S10 from an S7. I bought a new S10 loaded with the first Verizon version of Android 10, G973USQS2CSL1. I want to get rid of the bloatware and go back to Android 9. My plan is to flash the U1 firmware, G973U1UES2BSIV, using all 4 of the U1 files. Then flash the Verizon CSC file from this firmware, G973USQS2BSIV, so I can get the "Advanced Calling" for Verizon. I was going to try to do that on my S7 but never got around to it. Here's a thread I created on the S7 forum that said that's what I would need to do to run the unbranded firmware on the S7 but also have Verizon's Advanced Calling (wifi calling, video call, hd calling). https://forum.xda-developers.com/galaxy-s7/help/install-verizon-advanced-calling-g930u-t3997525
I noticed the S10 Verizon firmware now has a 5th file, a USERDATA file. Will I need to also flash that?
I wanted to point out, my new phone is currently locked, but Verizon automatically unlocks it after 60 days. https://www.verizon.com/about/consumer-safety/device-unlocking-policy Will it be a problem if I flash the unbranded firmware on a phone that is still locked? Since Verizon is my carrier, I will obviously be using a Verizon SIM card.
Thank for the help.
You can flash any firmware to your phone as long as it's for the U or U1 models as the "U" means Universal. Bought a phone from AT&T? Flash the Sprint or T-mobile firmware without issues. Same for Verizon and other U.S. carriers firmware.
Flashing the unbranded firmware will get rid of the bloatware, but will also get rid of other features like wifi calling, advanced calling, etc. The user data file is just all of Verizon's bloatware and info crap.
As for going back to Android 9, you can do that as long as you're still on the v2 bootloader. If you've upgraded to the v3 bootloader via OTA, you won't be able to return to Android 9.
StoneyJSG said:
You can flash any firmware to your phone as long as it's for the U or U1 models as the "U" means Universal. Bought a phone from AT&T? Flash the Sprint or T-mobile firmware without issues. Same for Verizon and other U.S. carriers firmware.
Flashing the unbranded firmware will get rid of the bloatware, but will also get rid of other features like wifi calling, advanced calling, etc. The user data file is just all of Verizon's bloatware and info crap.
As for going back to Android 9, you can do that as long as you're still on the v2 bootloader. If you've upgraded to the v3 bootloader via OTA, you won't be able to return to Android 9.
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Click to collapse
I'm on v2 bootloader. Have you heard of flashing the VZW CSC file on top of the U1 unbranded firmware? Apparently people have done it on older devices, like the S7, that only took the 4 files when flashing. I'm trying to run unbranded firmware but still have the Verizon Advanced Calling (wifi calling, HD calling, video call).
Okay if you're on bootloader v2 then you can go back to Android 9. I haven't heard of flashing the carrier CSC file with the unbranded U1 firmware. It might work or might also brick your phone.