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Hey guy I just unlocked an old SGS3 for AT&T SGH-I747. Now i plan on giving the phone to my mom for her to use since her current phone is a POS... how would i go about getting tmobile firmware on it for her without bricking. I know i have to root first and then Recovery then Rom, but is it safe and stable to run TMO rom on the att model of the S3. I just want to make sure that i go about this the rite way.
Thanks in advance
Will she be using T-Mobile data? The i747 does not natively support aws frequencies so that may be a problem. Voice calls would probably work.
You can't flash the t999 modem and bootloader to the i747 so forget about flashing a T-Mobile rom to i747.
Pray tell: How did you Un-Lock it?
I haven't been able to get past the debug screen?
Any info is appreciated, Thanks!
JosephJ85 said:
Hey guy I just unlocked an old SGS3 for AT&T SGH-I747. Now i plan on giving the phone to my mom for her to use since her current phone is a POS... how would i go about getting tmobile firmware on it for her without bricking. I know i have to root first and then Recovery then Rom, but is it safe and stable to run TMO rom on the att model of the S3. I just want to make sure that i go about this the rite way.
Thanks in advance
Click to expand...
Click to collapse
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!
Has anyone had success with installing carrier firmware on an unlocked phone from a different carrier? I am able to flash XAA (unlocked) software to the phone but haven't had success with verizon software. After installing the unlocked software, I lose the original T-mobile screen when powering on along with all the bloatware. However, if I try to flash verizon firmware onto it, it reverts back to T-mobile screen, bloatware etc.
I've tried the following:
TMB-->VZW (fail, stays TMB)
TMB-->XAA (success, even changes phone info to SM-n975u1)
TMB-->XAA-->VZW (fail, reverts to TMB)
VZW software used was for SM-n975u as that was what people had success with when I looked through forums.
I'm going to leave it with unlocked firmware for now but would appreciate any tips with flashing verizon firmware. I'd like to get all the verizon features if possible.
Are you trying to use you T-Mobile SIM card with it as Verizon? If so, newer firmwares will prohibit that due to the SIM detect function.
Thanks for the response. No, I'm using my Verizon sim card. The call, text, web actually work fine. I was just hoping to get functions like Verizon Voicemail, call filter etc.
Did you boot your phone with the VZW SIM after flashing XAA? You have to do this before flashing the VZW firmware. That's worked for me when I went from ATT --> XAA + boot with VZW SIM --> VZW
Sent from my SM-N975U using Tapatalk
No I havent tried that yet! Will attempt it when I get home from work and update the post. Thanks guys!
I flashed xaa and put in my vzw sim, restarted the phone and then tried to flash vzw. Unfortunately that did not work. Still comes up Tmobile.
I'm trying to get my unlocked att Note10+ to Verizon. I hope flashing will get this to work
As of now, I think just using the unlocked xaa firmware is your best option. Download the xaa firmware using samfirm or sammobile and flash it with Odin. It seems to be working fine for me currently. I cant get all Verizon functions like Verizon Voicemail but I haven't noticed many other issues.
ferzmedina said:
Did you boot your phone with the VZW SIM after flashing XAA? You have to do this before flashing the VZW firmware. That's worked for me when I went from ATT --> XAA + boot with VZW SIM --> VZW
Sent from my SM-N975U using Tapatalk
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Click to collapse
I tried this and it's working fully. WiFi calling. Visual voicemail and Verizon boot animation and Verizon apps
Att note 10 to XAA to verizon
Whatisveal said:
As of now, I think just using the unlocked xaa firmware is your best option. Download the xaa firmware using samfirm or sammobile and flash it with Odin. It seems to be working fine for me currently. I cant get all Verizon functions like Verizon Voicemail but I haven't noticed many other issues.
Click to expand...
Click to collapse
Are you flashing the Verizon Userdata as well in Odin?
do anyone have stock firmware for SM-N975U trying to remove the frp on it it a verizon version dont care about erasing the data on it
Out of curiousity why did you want to got to verizon? I have found a software issue with the n976V firmware that locks out verizon MVNO sims. Seems to bypass the sim data per my carrier.
Was looking to go the other way.
Lucky The Flash T-Mobile firmware on my Sprint phone is there anyway I can do this?
I have an unlocked, not rooted and factory OS Verizon(SM-G988U) with Android 10. I recently switched to T-mobile and was thinking to flash the firmware from Verizon to Tmobile to better use their wifi calling and other features.
Where can I get the latest files to flash the firmware? Also, to switch from Verizon to Tmobile, do I have to flash Verizon-->Unlocked(U1)-->Tmobile or can I do Verizon directly to Tmobile firmware? I read few threads but I was confused on what exactly I need to do.
I downloaded Odin v3.14.1 and latest Samsung drivers. Beside the firmware files and placing appropriate folders in BL, AP, CP and CSC, anything else I need to do?
Sorry for noob question but this is my first flash and was looking for exact steps.
Thank You
You need to go Verizon-unlocked-Tmobile. You'll want the patched Odin too. I use Frija to get my firmwares https://forum.xda-developers.com/t/tool-frija-samsung-firmware-downloader-checker.3910584/ but you can use sammobile as well.
Thank You. Is Frija 1.4.3 the latest version?
Also, the Odin I downloaded, the executable says "Odin3 v3.14.1_3B_PatcheD" which I suppose is latest and patched, right?
In the Frija, CSC, I got the Tmobile firmware as TMB. What is the code for the unlocked firmware so I can download it?
Also, do I need to root to flash the firmware from Verizon-->unlocked-->Tmob?
Noyou do not need root
In the Frija, CSC, I got the Tmobile firmware as TMB. What is the code for the unlocked firmware so I can download it?
Never mind found out.
SM-G988U1 , CSC- XAA for Unlocked
and
SM-G988U, CSC- TMOB for Tmobile.
Were you ever able to get WiFi calling to work?