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can I flash a at&t stock firmware with odin to my T-Mobile m919 with out any problems...right now my s4 is sim unlocked and im on at&t network .and it seems like its working ok but signal a little on the low side and spotty lte service....would there be any advantage flashing at&t's stock firmware to use on att network ...would my service and signal be any better.....if I wanted to would I be able to flash back to T-Mobile stock firmware...will it work....anyone try this ..anything I should know before I do this ...thanks in advance
Yes, you can. but be aware that you will lose t mobile features like wifi calling which is really useful.
re: wifi calling
XxKINGxX2580 said:
Yes, you can. but be aware that you will lose t mobile features like wifi calling which is really useful.
Click to expand...
Click to collapse
He will NOT loose Tmobile wifi because he never had it, if he has an AT&T unlocked phone and
odin flashes any tmobile rom there will be no wifi calling because AT&T network itself does not offer it.
The only way he will have Wifi calling would be if he switched from the AT&T network to Tmobile network.
No one will have wifi calling regardless which rom they flash unless they have a tmobile sim card.
hope this clears things up a bit.
Misterjunky said:
He will NOT loose Tmobile wifi because he never had it, if he has an AT&T unlocked phone and
odin flashes any tmobile rom there will be no wifi calling because AT&T network itself does not offer it.
The only way he will have Wifi calling would be if he switched from the AT&T network to Tmobile network.
No one will have wifi calling regardless which rom they flash unless they have a tmobile sim card.
hope this clears things up a bit.
Click to expand...
Click to collapse
I have a T-Mobile phone I use on at&t network ...flashing at&t stock firmware wont lock my phone right ..and should be able to flash back to T-Mobile stock firmware if I wanted to right..wont relock sim or bootloader....thanks guys
re: locked/unlocked
[email protected] said:
I have a T-Mobile phone I use on at&t network ...flashing at&t stock firmware wont lock my phone right ..and should be able to flash back to T-Mobile stock firmware if I wanted to right..wont relock sim or bootloader....thanks guys
Click to expand...
Click to collapse
Nope, it won't lock or re-lock your phone, once a phone is unlocked properly it will stay that way
regardless which rom you flash and regardless if you're on the AT&T network or Tmobile network.
Do not Odin flash the AT&T stock firmware on a Tmobile phone even if it's unlocked.
If you do you will not be able to make or receive any phone calls.
You can flash AT&T or Tmobile CWM/TWRP flashable stock or custom zip file roms because
those do not contain the radio/modem images like the Odin flash firmware do.
If you odin flash back to stock Tmobile firmware you will loose root unless you re-root after flashing.
As far as bootloaders go, a Tmobile phone requires a Tmobile bootloader, but you don't need to worry
about that if you flash the stock official tmobile firmware with Odin.
All the other tmobile and at&t cwm/twrp flashable zip file roms found in these threads don't contain
any bootloaders that's why they can be flashed on any unlocked and rooted tmobile or at&t phones.
Misterjunky said:
Nope, it won't lock or re-lock your phone, once a phone is unlocked properly it will stay that way
regardless which rom you flash and regardless if you're on the AT&T network or Tmobile network.
Do not Odin flash the AT&T stock firmware on a Tmobile phone even if it's unlocked.
If you do you will not be able to make or receive any phone calls.
You can flash AT&T or Tmobile CWM/TWRP flashable stock or custom zip file roms because
those do not contain the radio/modem images like the Odin flash firmware do.
If you odin flash back to stock Tmobile firmware you will loose root unless you re-root after flashing.
As far as bootloaders go, a Tmobile phone requires a Tmobile bootloader, but you don't need to worry
about that if you flash the stock official tmobile firmware with Odin.
All the other tmobile and at&t cwm/twrp flashable zip file roms found in these threads don't contain
any bootloaders that's why they can be flashed on any unlocked and rooted tmobile or at&t phones.
Click to expand...
Click to collapse
so the hardware is different is that why you cant flash att stock firmware with odin on a T-Mobile s4
re: locked/unlocked
[email protected] said:
so the hardware is different is that why you cant flash att stock firmware with odin on a T-Mobile s4
Click to expand...
Click to collapse
Exactly, the hardware is only a little different that's why we can use the cwm/twrp flashable zipfile custom
tmobile/at&t roms with either the tmobile locked or unlocked phones or the unlocked at&t phones.
The only exception is that wifi calling only works on an actual tmobile phone with a tmobile
sim card which is on the tmobile network whether it's locked or unlocked.
[email protected] said:
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right now my s4 is sim unlocked and im on at&t network
Click to expand...
Click to collapse
Misterjunky said:
The only exception is that wifi calling only works on an actual tmobile phone with a tmobile
sim card which is on the tmobile network whether it's locked or unlocked.
Click to expand...
Click to collapse
Don't think it matters if WiFi calling isn't enabled.
I thought the hardware between the AT&T s4 and the T Mobile s4 was the same. I thought the reason they received different radio frequencies was in the firmware and not the hardware can anyone confirm ..
I wanted to try to flash AT&T stock firmware on my t-mobile s4 for better performance on AT&T network
[email protected] said:
I thought the hardware between the AT&T s4 and the T Mobile s4 was the same. I thought the reason they received different radio frequencies was in the firmware and not the hardware can anyone confirm ..
I wanted to try to flash AT&T stock firmware on my t-mobile s4 for better performance on AT&T network
Click to expand...
Click to collapse
I would love the answer to this question too.
The key is the Modem aka Baseband. This is the Radio file and it is hardware and carrier dependent. If you try to flash this you will mess up the bootloader and radio and you have a brick.
I'm too on AT&T network with T-Mobile phone. I'm using the stock MDL radio and it's working fine. I don't notice a difference between the 2 devices on LTE network. if T-Mobile can't lock on to LTE network, AT&T S4 won't either.
sorry to slightly threadjack.... but does that mean if i flash a custom s4 AT&T rom (i.e. "CleanRom"), i will still be going through a Tmobile bootloader \ kernal etc..?
Is there any foolproof way to "convert" an tmobile s4 to an ATT based s4?
Can't you guys just flash a popular custom rom for sgh-i337 variant and then change the radioband (or whatever it's called) sh*t manually? If you ever flash another carrier rom, make sure ur baseband is the original carrier/phone as stated before. And flash ur carrier/phone kernel(custom or stock, doesn't matter) as well.
I believe these ppl created this topic because they want the stock carrier branded firmware on their phone, so that they can have all the carrier specific features on their phone. Third party ROM is not their choice, otherwise there are tones post out there already. I believe someone must be brave enough to flash it to their phone to test that, otherwise, there is no good answer to that.
Cal-El said:
The key is the Modem aka Baseband. This is the Radio file and it is hardware and carrier dependent. If you try to flash this you will mess up the bootloader and radio and you have a brick.
Click to expand...
Click to collapse
Hi guys, anyone can tell me if this will work:
I have TMO M991 and I want to use it in Europe but have problem with network signal (not registered on network; missed calls & s... like that).
My guess is that radio is different and optimized for LTE, which we dont have here...
I m thinking of flashing I9505 stock rom and baseband...what do You think, will this improve radio reception/stable network signal?
I9505 is the version used in Europe region...
I honestly tried to find similar topics, no luck so far so pls point me in the right direction if nothing else...
Cheers!
Hi all. I am new to all this and the more I read the more confused I become! I bought a T-Mobile T999 with a bad IMEI. I unlocked it and am using it with my Mobilicity SIM card.Everything is working fine except for the wifi hotspot. Also the T-Mobile bloatware is getting in the way. Iwas on my way to rooting the phone when i thought to myself... would it be possible to flash the Mobilicity stock firmware from the SamMobile sight onto the phone. If this doesn't work would I be able to flash the stock TMobile firmware back to the phone? So on the T999 can I flash the Mobilicity T999VVLDMF2_T999VYVLDMF2_MCT firmware from SamMobile
Thanks to any and all who might help.
No to all.
Sent from my SGH-T999 using Tapatalk
I flashed a stock 4.4.2 t-mobile firmware to my sprint ls980.. is there anyway to get any ls980 firmware back on it? i use it for tmobile which is why i flashed it but seen a few threads on how to unlock the sim and now im stuck. did i ruin the phone? or could i at least get it to work through tmobile with the firmware i flashed? i cant even get it to connect to google play. wifi works tho
Using sprint tot with the generic DLL file should get you there.
Has anyone been able to flash the Canadian stock firmware (SM-N930W8) and get voice & data through verizon? I tried flashing the verizion CSC and manually adding the APN.. but no luck.
The Canadian firmware is bloat-free, stock samsung.
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!