Develop Bugs

Galaxy S4 ATT, install T-mobile Stock ROM?

I unlocked a Galaxy S4 SGH-I337 FROM ATT I am using Tmobile services.
My question is can I install a Stock ROM from TMobile instead of having the ATT one?
I like the Wifi Calling and Tethering option.

I can tell you... But I have a LOT of readers who want to know how to do what you have already done! How did you SIM unlock your SGH-I337? There is a published method for AT&T and TMo that seems to no longer work on the AT&T variant.
OK.. I won't hold you hostage, but I really would like to know!
For the flash to stock, just head over here http://forum.xda-developers.com/showthread.php?t=2267895
Follow the instructions and that will re-flash T-Mobile stock everything.
Sent from my SGH-M919 using Tapatalk

mhannigan said:
I can tell you... But I have a LOT of readers who want to know how to do what you have already done! How did you SIM unlock your SGH-I337? There is a published method for AT&T and TMo that seems to no longer work on the AT&T variant.
OK.. I won't hold you hostage, but I really would like to know!
For the flash to stock, just head over here http://forum.xda-developers.com/showthread.php?t=2267895
Follow the instructions and that will re-flash T-Mobile stock everything.
Sent from my SGH-M919 using Tapatalk
Click to expand...
Click to collapse
Are u sure u can directly odin flash tmo stock unto i337?
Sent from my SAMSUNG-SGH-I337 using xda app-developers app

sharpeyedman said:
Are u sure u can directly odin flash tmo stock unto i337?
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
Click to expand...
Click to collapse
Yes. But also check this thread. The AT&T boot loader is locked and may require Loki Doki patch when you are done.
http://forum.xda-developers.com/showthread.php?t=2295557
Sent from my SGH-M919 using Tapatalk

mhannigan said:
Yes. But also check this thread. The AT&T boot loader is locked and may require Loki Doki patch when you are done.
http://forum.xda-developers.com/showthread.php?t=2295557
Sent from my SGH-M919 using Tapatalk
Click to expand...
Click to collapse
.... I may be wrong here, but since when has it been OK to Odin different carrier's stock .tars? Flashable CWM zips yes, but the bone stock tar with modem, baseband, etc?
Also, being that you have TMO service and an ATT device; flashing a TMO ROM with WiFi calling should work; just use an ATT kernel and the Loki patch. Personally, I'd flash the rooted stock MDL or a custom TouchWiz via CWM or whatever recovery you happen to use and not use Odin.

lordcheeto03 said:
.... I may be wrong here, but since when has it been OK to Odin different carrier's stock .tars? Flashable CWM zips yes, but the bone stock tar with modem, baseband, etc?
Also, being that you have TMO service and an ATT device; flashing a TMO ROM with WiFi calling should work; just use an ATT kernel and the Loki patch. Personally, I'd flash the rooted stock MDL or a custom TouchWiz via CWM or whatever recovery you happen to use and not use Odin.
Click to expand...
Click to collapse
Since wjenmisnit OK to do it differently?
It is only OK to do when you know what you are doing. In this case the hardware is absolutely identical. You're not going to be using AT&Ts baseband firmware on the T-Mobile network are you? Good luck with that.
Mike
Sent from my SGH-M919 using Tapatalk
---------- Post added at 12:24 AM ---------- Previous post was at 12:17 AM ----------
lordcheeto03 said:
.... I may be wrong here, but since when has it been OK to Odin different carrier's stock .tars? Flashable CWM zips yes, but the bone stock tar with modem, baseband, etc?
Also, being that you have TMO service and an ATT device; flashing a TMO ROM with WiFi calling should work; just use an ATT kernel and the Loki patch. Personally, I'd flash the rooted stock MDL or a custom TouchWiz via CWM or whatever recovery you happen to use and not use Odin.
Click to expand...
Click to collapse
MDL baseband is the modem firmware
Sent from my SGH-M919 using Tapatalk

i have the i337 ATT and I am using a Tmobile sim card. Just youtube "unlock galaxy s4 AT&T". There are plenty of videos that use a secret menu to unlock the phone.
Free and instant

I also have AT&T i337 unlocked BUT
I also have AT&T i337 unlocked BUT when I try to use it with MetroPCS (same tower as T-Mobile - companies now merged) I can't get anything but Edge network where on my MetroPCS-supplied phone I get 4G (LTE only rarely) in the same areas. Edge network is ridiculous - can't even load a standard webpage- forget about watching a video! ookla =0.01mps!
So I have an unusable rooted, unlocked S4.
I've tried various APN settings to no avail... Thought I would try liquidsmooth ROM, or any ROM that works on both AT&T and T-Mobile... I assume T-Mobile /MetroPCS would react the same. And I am on a pay as you go plan that is similar to T-Mobile's s. I could easily switch to them if not...
Questions:
Has anyone any advice that could help?
Does anyone know if T-Mobile requires a "pairing" of sim card with phone's IMEI as MetroPCS does? (big pain in the butt)

I've done the same thing flashed roms, Modems, To my luck nothing, I did filing that since I repaired the imei, That is when the problem started. Also to does not tie imei to sims. Did you repair imei
Sent from my SGH-M919 using xda premium

Easy free Sim unlock
Just wanted to point out that if you know someone who has AT&T service they can unlock your phone for free My girlfriend did it for me on their website and it took 24 hours for them to send an email with the unlock code. Just thought i should share that. Up next getting this t-mobile rom onto my 32gb i337 at 4.4.2 with NB1. I hate everything AT&T and God is this phone bloated!

Wanabedev83 said:
Just wanted to point out that if you know someone who has AT&T service they can unlock your phone for free My girlfriend did it for me on their website and it took 24 hours for them to send an email with the unlock code. Just thought i should share that. Up next getting this t-mobile rom onto my 32gb i337 at 4.4.2 with NB1. I hate everything AT&T and God is this phone bloated!
Click to expand...
Click to collapse
Don't they have to be the owner to request an unlock?
Sent from my SGH-M919 using Tapatalk

serio22 said:
Don't they have to be the owner to request an unlock?
Sent from my SGH-M919 using Tapatalk
Click to expand...
Click to collapse
To be honest i can't answer your question. The phone i bought was from a guy who sold it to me out of eBay with a none working screen, he had the imei in the pics so i ran an imei blacklist check and it was clean. I asked him why he didn't fix it and said it was out of warranty so he just left it dead. I guess it was paid for but in his account so it was free for anyone to use but letting my girl do the unlock request worked so if you have a phone that's not blacklisted and you its not associated to an active account I guess it could be done. Try it, it's worth the try.

Similar question
Very first post, not sure if I should have started a new thread. Anyway, I have an ATT S4 I337 with the MF3 baseband. It's rooted, region unlocked, and fully switched to t-mobile service using a method I found on youtube, which worked fairly well except had to modify two things (I can help if you're having trouble). Now I'd like to upgrade firmware (I'm still on 4.2.2). However, I have a lot of uncertainty because of all the changes I've made. If I temporarily unroot, who am I going to get updates from? Do I need TMO or ATT custom ROMs if I want custom (have they solved that bootloader issue yet?). Basically, what's the safest way to update firmware?
Thanks in advance

mhannigan said:
Since wjenmisnit OK to do it differently?
It is only OK to do when you know what you are doing. In this case the hardware is absolutely identical. You're not going to be using AT&Ts baseband firmware on the T-Mobile network are you? Good luck with that.
Mike
Sent from my SGH-M919 using Tapatalk
---------- Post added at 12:24 AM ---------- Previous post was at 12:17 AM ----------
MDL baseband is the modem firmware
Sent from my SGH-M919 using Tapatalk
Click to expand...
Click to collapse
The above also omits that if you are on Android 4.3.X than the bootloader on your Samsung Galaxy S4 contains a bootloader restriction preventing any downgrade which means you would be unable to flash MDL (ie. M919UVUAMDL) since MDL is Android 4.2.2.
Does anyone know a way around this bootloader restriction thereby allowing a downgrade to 4.2.2?

att i337 to t-mob stock
Hi, Im pretty new to this firmware and different model numbers etc.. but here goes. I bought a samsung s4 on att i337 a few months ago off a friend. I paid an online company for the unlock code and received the code within 24 hours. The phone is now unlocked and I have a T-mob sim in it, i'm now looking to update the firmware to t-mobile 4.4.4. Can i download a t-mob stock rom for i337?? I'm worried that this might break the phone as everything I see for t-mob is SGH-M919. Should this matter now that the phone is unlocked?? Thanks

No, you need to use ATT firmware due to hardware differences (antenna/radio). Also as I recall ATT S4s have a locked bootloader meaning only safestrap compatible ROMs can be used, unless something changed since I had one last summer. Sold it, on Swappa, and bought a TMob version with unlocked boot loader and sim unlocked!
Sent from my SGH-M919 using Tapatalk

mfranklin90 said:
Very first post, not sure if I should have started a new thread. Anyway, I have an ATT S4 I337 with the MF3 baseband. It's rooted, region unlocked, and fully switched to t-mobile service using a method I found on youtube, which worked fairly well except had to modify two things (I can help if you're having trouble). Now I'd like to upgrade firmware (I'm still on 4.2.2). However, I have a lot of uncertainty because of all the changes I've made. If I temporarily unroot, who am I going to get updates from? Do I need TMO or ATT custom ROMs if I want custom (have they solved that bootloader issue yet?). Basically, what's the safest way to update firmware?
Thanks in advance
Click to expand...
Click to collapse
Hi! I am having major issues with my s4 i337 after switching from att to tmobile. The phone was unlocked so I took it upon myself to unlock it. It is unlocked but sometimes or rather most of the time does not pick up the network. When it does have data connection, it is Edge. I flashed the NC1 to root my phone, then reflashed to NJ4 (to unlock) but now nothing works. No wifi, camera fails, no multitasker, no voice assistant. Please help!!!!! I don't know what to do. I should have never unrooted it to unlock. I should have paid the $35 to get an unlock code. Can I fix this?

vannicuhh said:
Hi! I am having major issues with my s4 i337 after switching from att to tmobile. The phone was unlocked so I took it upon myself to unlock it. It is unlocked but sometimes or rather most of the time does not pick up the network. When it does have data connection, it is Edge. I flashed the NC1 to root my phone, then reflashed to NJ4 (to unlock) but now nothing works. No wifi, camera fails, no multitasker, no voice assistant. Please help!!!!! I don't know what to do. I should have never unrooted it to unlock. I should have paid the $35 to get an unlock code. Can I fix this?
Click to expand...
Click to collapse
Have you flashed the full firmware?

serio22 said:
Have you flashed the full firmware?
Click to expand...
Click to collapse
I am not sure. I flashed NB1 as suggested by another forum member and everything is working once again. Although it went back to 4.4.2.
Now it has this notification : security notice: unauthorized actions have been detected. It wants me to reboot to revert the changes. How do I make this go away and will it go back to its unusable mode if I manually reboot?
Sent from my SAMSUNG-SGH-I337 using xda Forum

YES
TTAHER said:
I unlocked a Galaxy S4 SGH-I337 FROM ATT I am using Tmobile services.
My question is can I install a Stock ROM from TMobile instead of having the ATT one?
I like the Wifi Calling and Tethering option.
Click to expand...
Click to collapse
i have samsung galaxy s7 edge att unlocked with tmobile sim card and my last 2 ota upgrade are from tmobile G935TUVU4APK1

[Q] Unlock OTA 4.3 - Any methods working yet?

I currently have OTA 4.3 installed (Rogers version from SamMobile -SGH-i747M). I would like to unlock the phone. The only methods I could find involve reverting to 4.1.1, which is impossible after OTA 4.3 update (according to many other XDA threads). So, 2 questions:
1) Are there any known 4.3 unlock methods presently?
2) Are there any known methods for reverting 4.3 to 4.1.1 presently? (to use old unlock methods)
Thanks!

Update: I've been able to downgrade from 4.3 to 4.1.1 by using Mobile Odin ( http://forum.xda-developers.com/showthread.php?t=1347899 ), which does not flash the bootloader (so the bootloader stays at 4.3, bypassing the failures when trying to downgrade with regular Odin). It required rooting 4.3, which I achieved with method 2 here: http://forum.xda-developers.com/showthread.php?t=2538991
However, now when I attempt to use the unlock method posted here: http://forum.xda-developers.com/showthread.php?t=2014982 - when I get into the Service Mode screen, there are NO options (instead of the 3 before or the 4 required to complete the unlock). I've attempted flashing modems from this thread: http://forum.xda-developers.com/showthread.php?t=1831898 to no avail.
Suggestions?

sabrinaela said:
Update: I've been able to downgrade from 4.3 to 4.1.1 by using Mobile Odin ( http://forum.xda-developers.com/showthread.php?t=1347899 ), which does not flash the bootloader (so the bootloader stays at 4.3, bypassing the failures when trying to downgrade with regular Odin). It required rooting 4.3, which I achieved with method 2 here: http://forum.xda-developers.com/showthread.php?t=2538991
However, now when I attempt to use the unlock method posted here: http://forum.xda-developers.com/showthread.php?t=2014982 - when I get into the Service Mode screen, there are NO options (instead of the 3 before or the 4 required to complete the unlock). I've attempted flashing modems from this thread: http://forum.xda-developers.com/showthread.php?t=1831898 to no avail.
Suggestions?
Click to expand...
Click to collapse
You downgraded? What 4.1.1 Rom or file did you flash with mobile Odin to downgrade?

shortydoggg said:
You downgraded? What 4.1.1 Rom or file did you flash with mobile Odin to downgrade?
Click to expand...
Click to collapse
I tried both the 4.1.1 AT&T and the 4.1.1 Rogers files from SamMobile (the phone is locked to Rogers). In both cases, in About Phone the "baseband" shows as "unknown", which I'm guessing is why the Service Mode menu shows nothing: something about being unable to detect the modem? Using regular Odin to flash the Rogers 4.3 ROM puts it back to its normal state with the baseband showing normally.
Another possibility is that the 4.3 bootloader (which cannot be downgraded) does something funny so that even if you're running 4.1.1 for everything else (bootloader still at 4.3), it screws things up? Not sure how that would work.

Tried another method - No luck
Update:
I've tried the 4.3 method suggested by Mr. X in this thread: http://forum.xda-developers.com/showthread.php?t=2529200
Unfortunately it didn't work for me (a couple other posters report that it didn't work for their 4.3 devices either).
I have seen some variants of the Service Mode unlock with different menu options (since 4.3 doesn't have the 4 required that are visible in 4.1.1). Any suggestions on other menu options that might work?
Any other ideas for unlocking 4.3 devices?

Bump - Lots of people have same issue
I've been watching the forums and this thread keeps coming up. Lots of people want to unlock from OTA 4.3. I'm bumping this thread because I've detailed what I've already tried with links so that things don't get repeated too much.
Anyone found a way to unlock from 4.3 yet?

sabrinaela said:
I've been watching the forums and this thread keeps coming up. Lots of people want to unlock from OTA 4.3. I'm bumping this thread because I've detailed what I've already tried with links so that things don't get repeated too much.
Anyone found a way to unlock from 4.3 yet?
Click to expand...
Click to collapse
I asked the same question a while ago and no answers came up. http://forum.xda-developers.com/showthread.php?t=2541909
I ended up paying one these services that give you the code. If you do that make sure you are on stock ROM or it won't work. Hope some solution comes up.

I think we can rule out unlocking phone ourselves.
Thanks for info. So cellunlocker works.
I looked at sammobile unlocker as well... but was uncertain if they service US customers, as they charge in uk currency.
Has someone in US tried sammobile unlock service on s3 on 4.3 successfully?
Sent from my GT-N8013 using Tapatalk

You guys try "galaxSim unlock" from the play store...says it has 4.3 support. Worth a try. I think there is actually a thread on xda that the developer lets you use the app for free.
http://forum.xda-developers.com/showthread.php?p=30541172
Edit... nevermind says US qualcomm devices not supported at this time.
GL
Sent from my SGH-I747M using XDA Premium 4 mobile app

Just unlocked my s3 from cellunlocker, so can comfirm that.
Sent from my SAMSUNG-SGH-I747 using Tapatalk

Bump - Seeing lots of threads. Anything yet?
Bump. I'm still seeing this thread appear a lot. Anyone have an unlock method for OTA 4.3 yet?

sabrinaela said:
Bump. I'm still seeing this thread appear a lot. Anyone have an unlock method for OTA 4.3 yet?
Click to expand...
Click to collapse
bump

sabrinaela said:
Bump. I'm still seeing this thread appear a lot. Anyone have an unlock method for OTA 4.3 yet?
Click to expand...
Click to collapse
Still not possible.
Ive just tried 4.1.1 - success
second one with Mr.X methodon 4.3 NO success.
The z3x box team reports unlocking on rooted 4.3 firmware by imei re-write method = success.
Code:
http://forum.gsmhosting.com/vbb/f453/samsung-i747-4-3-unlocked-1750949/index2.html
Thanks.

Has anyone tried RegionLock Away?

iBowToAndroid said:
Has anyone tried RegionLock Away?
Click to expand...
Click to collapse
I didn't know that these phones were region-locked. Does this mean that a Canadian s3 that has been sim unlocked may not work in Europe?

audit13 said:
I didn't know that these phones were region-locked. Does this mean that a Canadian s3 that has been sim unlocked may not work in Europe?
Click to expand...
Click to collapse
US phones aren't region locked because they're already SIM locked (I have no idea what the situation is with the Verizon Note 3). I'm not sure about Canadian phones - the region lock appears to exist on phones that are sold unlocked. (All you have to do is activate the phone in the region it was intended to be sold/used in and the region lock is removed - you only encounter issues when the first service you try to use the phone with is outside of its region.) But someone found that RegionLock Away SIM unlocked his T-Mo Note 3, and since then it's been found to remove the SIM lock on quite a few Samsung devices

Sim Unlock Method for T999L (LTE version) (4.1.2 Only)

I didnt see this on the other thread about sim unlock for the original t-mobile S3 so my apologies if this method has been posted before.
I have tested this on SGH-T999L aka theLTE version of the S3 for T-Mobile. I did this on 4.1.2 and it will more likely not work on 4.3. I havent tested it on T999N (Metro PCS version) but if someone does and it works, let us know
1. Go to https://towelroot.com/ and download towelroot. Install it and run it. Now you are rooted.
2. Install RegionLock Away
http://forum.xda-developers.com/showthread.php?t=2470551
3. Run it and grant root and reboot and now you are unlocked.
Optional step
4. Update through Kies to 4.3 and it will work despite being rooted (Device Status shows "Official" if rooted through towelroot). Update fails if you do it through the settings so this is the only to update besides odin/flashing
I test it an AT&T Straight Talk and everything was working with LTE

Thanks! I had run Region Lock Away to confirm it was safe to try a while back, but was never able to test if it actually SIM unlocked the device. If it worked on 4.1.2, I think there is a good chance it would also work on 4.3. This needs confirmation though.
Also, SIM unlocking is permanent, so it should remain unlocked regardless of how you update or if you flash any custom roms.

It may also be possible to unlock 4.3 this way, I suggested a couple people to try this but they never replied with any feedback so don't know if it worked or not. This method works on the S4 with 4.3 but I think you have to downgrade the modem if I remember correctly, or it may only be needed for 4.4.2. The same might apply here

I am guessing that you need to have a stock based ROM. I attempted it with Carbon ROM and got "Could not locate CSC data!"

Yup, gotta be stock to unlock, whether you are using a dialer code or any other methods.

DocHoliday77 said:
Yup, gotta be stock to unlock, whether you are using a dialer code or any other methods.
Click to expand...
Click to collapse
So, StockMod or S3Rx should work?

Not sure tbh. The dialer has to be unmodified stock. And I'm not certain if one of the system apps like keystring or factoryapp, or one of the others would be needed. Some custom roms debloated these, not sure about those two. (They probably didnt, but I can't say for sure. ) you could try it, but if it doesn't take, try flashing stock with Odin. Root66 should be ok if you do

DocHoliday77 said:
Not sure tbh. The dialer has to be unmodified stock. And I'm not certain if one of the system apps like keystring or factoryapp, or one of the others would be needed. Some custom roms debloated these, not sure about those two. (They probably didnt, but I can't say for sure. ) you could try it, but if it doesn't take, try flashing stock with Odin. Root66 should be ok if you do
Click to expand...
Click to collapse
I'll give it a try just to see if it works and give feedback,

The patch returns with Successful on S3Rx. I will have to wait til I get home to test it with another Sim card to see if it actually works.

DocHoliday77 said:
Thanks! I had run Region Lock Away to confirm it was safe to try a while back, but was never able to test if it actually SIM unlocked the device. If it worked on 4.1.2, I think there is a good chance it would also work on 4.3. This needs confirmation though.
Also, SIM unlocking is permanent, so it should remain unlocked regardless of how you update or if you flash any custom roms.
Click to expand...
Click to collapse
Does not work on 4.3 build NC1.
I get a hold of alot of phones and work at cell phone repair shop so i always try to find ways to unlock them instead of wasting money on unlock codes. On the S4 you have to downgrade the modem and sometimes roms on 4.3/4.4 to unlocked them. So if we can downgrade the modem, i think we can unlock on 4.3.
Sent from my SM-G900T using Tapatalk

Well, it wont brick, but downgrading the modem simply just doesnt work. No signal or anything. That's why the free unlock no longer works on 4.3.

kali323 said:
So if we can downgrade the modem, i think we can unlock on 4.3.
Sent from my SM-G900T using Tapatalk
Click to expand...
Click to collapse
Try it, I know downgrading modem to unlock works with the S4 but don't know about the S3, we haven't found anyone willing to do it, or provide the feedback
edit: well I meant unlocking with regionunlock

kali323 said:
1. Go to https://towelroot.com/ and download towelroot. Install it and run it. Now you are rooted.
2. Install RegionLock Away http://forum.xda-developers.com/showthread.php?t=2470551
3. Run it and grant root and reboot and now you are unlocked.
Click to expand...
Click to collapse
I can confirm it works. Thanx. I just followed your steps and unlocked my cousin's S3 T999 running:
Stock Android 4.1.2
Baseband T999UVDMD5

Sim unlock?

Hi guys I am running into a delema here ive been searching and searching for a way to unlock this thing.
Im now running latest cwmr and have installed a custom 4.4.2 rom ....came from stock 4.4.2 so I already had a problem with unlocking do the locked bootloader....anyhow I have tried changing the modem via a thread right here in the forum I download all 6 modems he had listed but every time I get installation aborted.
Ill keep searching but am wondering if anyone can give me any pointers.
Thanks, Carl

Shortbus-Driver said:
Hi guys I am running into a delema here ive been searching and searching for a way to unlock this thing.
Im now running latest cwmr and have installed a custom 4.4.2 rom ....came from stock 4.4.2 so I already had a problem with unlocking do the locked bootloader....anyhow I have tried changing the modem via a thread right here in the forum I download all 6 modems he had listed but every time I get installation aborted.
Ill keep searching but am wondering if anyone can give me any pointers.
Thanks, Carl
Click to expand...
Click to collapse
1) the SGHI747 comes with unlocked bootloader. (bricked my first trying to "unlock" it. lol. now anyways).
2) do you know your current bootloader/modem version ?
3) you know this is the att thread , right?
"all i can really do , is stay out of my own way and let the will of heaven be done"

Its running the bootloader for 4.4.2 it was already upgraded to kk all ive done sofar is to root it and flash a custom 4.4.2 rom on it.
Yes its the att s3 its actually a friend of mines phone hes on tmobile but his mother is on att from which he got the phone from.
I had no problems doing this to my note 2 but this s3 seems to be a little bit more finicky

We talked to att customer service just a few minutes ago and they said his mom needs to be the one to fill out the form online which is an option.....but he really needs his phone up now and att csr said it will take another 3-5 days to get the code.....I jist figured I could do it easily and faster lol since i am a flashaholic and unlocked many of the other GS phones

I have found a thread about a modified downgrade firmware to odin back to 4.1.2 that will allow me to unlock from there....

Shortbus-Driver said:
I have found a thread about a modified downgrade firmware to odin back to 4.1.2 that will allow me to unlock from there....
Click to expand...
Click to collapse
well if bootloader is NE4 or NJ1 all i've ever read says that to downgrade will brick the phone. but..... if you can get to 4.1.1 there is a code to enter from the dial pad that will unlock. if someone has found a workaround to downgrade that would be awesome. save a lot of people a lot of trouble. if you dont mind please post results and the link to the thread.:good:
"all i can really do , is stay out of my own way and let the will of heaven be done"

I'm also on KK. My device is a I747M. I tried the 4.1.1 downgrade few minutes ago. The Service mode code works but one option is not available because modem cannot be downgraded.
Screenshot 1 > 4.1.1 with KK modem. modem downgrade gives :baseband unknown"
Screenshot 2 > Under Network Lock, "NW Lock NV Data INITIALLIZ" option not available
mrrocketdog said:
well if bootloader is NE4 or NJ1 all i've ever read says that to downgrade will brick the phone. but..... if you can get to 4.1.1 there is a code to enter from the dial pad that will unlock. if someone has found a workaround to downgrade that would be awesome. save a lot of people a lot of trouble. if you dont mind please post results and the link to the thread.:good:
"all i can really do , is stay out of my own way and let the will of heaven be done"
Click to expand...
Click to collapse

Hmm not good.....yea im on ne4 and was hoping that worked....guess my buddy is going to have to go the other route.
That was the way I was planning to go....downgrade and use the menu code

Downgrade from 4.4.2 to 4.1.1 i747
does any tried downgrading from this? 4.4.2 to 4.4.1
im using i747 kitkat 4..4.2
can i downgrade it using samsung kies3?

In order to unlock, you need to be running the 4.1.1 bootloader. Once the phone is running a 4.3 or higher bootloader, you can't downgrade the bootloader.

Thats where Sammy pisses off its main users

At&t sent him the unlock code but its not working and also has the warning that if you try 5 or more times that the device will be permanently locked to at&t.
Any ideas there?

Are you getting the prompt to enter the unlock code? Are you running a stock dialler?

audit13 said:
Are you getting the prompt to enter the unlock code? Are you running a stock dialler?
Click to expand...
Click to collapse
Yes the phone gets the promt to enter the code .
He has a custom 4.4.2 tw rom....I dont recall which one but he wanted as close to stock as possible with s5 feel so thats what I installed.
This one ... http://forum.xda-developers.com/gal...x-4-0-touchwiz-4-4-2-ucufne4-8-12-14-t2848080

Maybe try this one: http://forum.xda-developers.com/galaxy-s3-att/general/rooted-ucufnj1-stock-rom-t2985006

Thanks ill give that a shot

AT&T Galaxy Note 4 N910A 5.1.1 Root for CM?

Hey,
Still a bit of a noob to the whole rooting process and navigating XDA forums, so I'm having trouble finding the information *I think* I should be looking for. Basically, my phone's just begun crashing periodically, multiple times a day: anything from Camera, Process System, Touchwiz Home Launcher, or Samsung Apps have "stopped working" / "not responding" before. Of course, my phone's warranty has expired, but my contract isn't up so an AT&T Store wont re-image it for me :crying:
Even I can tell, at this point, that it's either my OS that's failing, or it's my hardware. I figured the easiest way to test this would be to put some stable CyanogenMod on it.
The information I'm looking for is: "is this possible?"
AT&T Samsung Galaxy Note 4
SM N910A UCU2DOI2
Currently @ 5.1.1
Thanks for reading,
~Vita.

No it is NOT possible to use any form of custom firmware or to root this device. It has a locked bootloader that has yet to be cracked open and the future of that happening os very bleak to non existant.
As for reimaging the device go to the note 4 at&t general section on the forum and read up on using odin and the 5.1.1 image posted there it will wipe the phone and format yhe system and data partitions and reinstall it like a new phone just like at&t would do or the manufacturer if you sent it to them.
Good luck

Thanks for the response.
Sorry for the dumb question, but isn't Odin able to flash any firmware onto a device? The "locked bootloader" means that only the stock OS may be reinstalled? Why is this...
Also, it seems unlock progress is being made on the N910V. Maybe hope?
Thanks for mentioning Odin, I'll try re-imaging the phone.
~Vita.

Ricovita said:
Thanks for the response.
Sorry for the dumb question, but isn't Odin able to flash any firmware onto a device? The "locked bootloader" means that only the stock OS may be reinstalled? Why is this...
Also, it seems unlock progress is being made on the N910V. Maybe hope?
Thanks for mentioning Odin, I'll try re-imaging the phone.
~Vita.
Click to expand...
Click to collapse
Well the problem is the kernel the bootloader prevents the devs from using an unsecure kernel (one not created and signed by at&t) on the phone if one is used the phone stops boot and says it is an unsecure non at&t kernel and to take thenphone to at&t store.
Odin can only write the firmware versiom that is currently on this phone in this case it is 5.1.1 if you flash any other note 4 versoin such as 4.2.2 it will brick.
Sm-910a flash example
Update ver Official at&t 5.1.1 / currently on phone 5.0.1 or 5.1.1 = good
Update ver (downgrade)oficcial at&t 4.2.2 / currently on phone 5.0.1 or 5.1.1 = brick not good or odin fail
Update from another carrier such as tmobile or verizon for 910t 910v 910g = fail (do not attempt)
Until oir boot loader is unlocked there is nothing we can do to mod or use custom firmware on this phone any attempt leads to a brick requiring using odin to re-flash the latest firmware (5.1.1 at this time) in order to make the phone functional again.

giga8547 said:
Until oir boot loader is unlocked there is nothing we can do to mod or use custom firmware on this phone any attempt leads to a brick requiring using odin to re-flash the latest firmware (5.1.1 at this time) in order to make the phone functional again.
Click to expand...
Click to collapse
So from what I understand, I could use Odin to flash the 4 files which correspond to the specific AT&T 5.1.1 SM-901A version of my phone (which is exactly what I have) to re-image the device and make it functional again. The problem is, I cannot find these devices on sammobile D:
Could someone direct me to these files? Or are they not out because AT&T sucks? Or, what.
~Vita.

Ricovita said:
So from what I understand, I could use Odin to flash the 4 files which correspond to the specific AT&T 5.1.1 SM-901A version of my phone (which is exactly what I have) to re-image the device and make it functional again. The problem is, I cannot find these devices on sammobile D:
Could someone direct me to these files? Or are they not out because AT&T sucks? Or, what.
~Vita.
Click to expand...
Click to collapse
Look in odin files in progress thread.
Sent from my SAMSUNG-SM-N910A using Tapatalk

Is it possible to downdraft from 5.1.1 to 5.0.1

firebird7880 said:
Is it possible to downdraft from 5.1.1 to 5.0.1
Click to expand...
Click to collapse
I think so, I don't know for sure but we've been able to Odin from various 5.0 Lollipop releases back to KitKat so should be fine.

downgrading from 5.1.1 or 5.0.1 to kitkat is possible but with many many problem but form 5.1.1 to 5.0.1 i don't know maybe phone will stuck or boot loop
thanks finitetime for your reply
other question are there any news about root for 5.1.1 n910a

help
my att note 4 is unlocked and it still won't let me install custom rom's

mouseman1 said:
my att note 4 is unlocked and it still won't let me install custom rom's
Click to expand...
Click to collapse
I am sure that you are referring to a sim unlock. A sim unlock and unlocked bootloader are two completely different entities. To flash a custom rom you will need to have your bootloader unlocked, which is something that a few of us are currently working on. Until then, no custom roms can be flashed on the att variant Note 4s. Take care

the boot loader says Qualcom secure boot : disabled ?
in the boot loader screen ?

mouseman1 said:
my att note 4 is unlocked and it still won't let me install custom rom's
Click to expand...
Click to collapse
Your phone is SIM UNLOCKED which has NOTHING to do with root, bootloader, or custom roms.
Sent from my SAMSUNG-SM-N910A using Tapatalk

mouseman1 said:
the boot loader says Qualcom secure boot : disabled ?
in the boot loader screen ?
Click to expand...
Click to collapse
Sorry, was off the forum for the weekend. Spexwood was correct, that is sim unlock. Qualcom is for the sim IE network. Take care.

Root is possible btw
Root is possible if youre willing to dedicate 10-30 hours of repititive root fails

How?
Press Buttons said:
Root is possible if youre willing to dedicate 10-30 hours of repititive root fails
Click to expand...
Click to collapse
How is root possible? What's the process ?