What do I do? - AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin

I have a rooted galaxy s4. The baseband version is nc1. And I'm reading that I can only download roms that are specifically for nc1. Running 4.4.2. Is this still the case?
Sent from my SAMSUNG-SGH-I337 using XDA Free mobile app

All the Roms listed in the KitKat section will work http://forum.xda-developers.com/showthread.php?t=2616221

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4.4.2 downgrade

so i took the 4,4.2 ota but ive read that root is not out for it yet, but still only certain recoveries and roms will work.
is there a way i can downgrade then install a recovery to flash an aosp/google play edition 4.4.2 rom?
jgc731 said:
so i took the 4,4.2 ota but ive read that root is not out for it yet, but still only certain recoveries and roms will work.
is there a way i can downgrade then install a recovery to flash an aosp/google play edition 4.4.2 rom?
Click to expand...
Click to collapse
There are plenty of threads with information in the general section, including a thread convienently named All Things MK2 And NB1. Make sure to check that and read more before asking questions unless you're on an I337m, in which case you can disregard anything I've said ;P
Sent from Black<3's I337 running BlackBox
You can't do what you want but there are roms you can flash. Start here
http://forum.xda-developers.com/showthread.php?p=50667360
Sent from my Nexus 5
I have root on 4.4 via cf auto root
Sent from my SGH-I337M using XDA Premium 4 mobile app
Jose0726 said:
I have root on 4.4 via cf auto root
Sent from my SGH-I337M using XDA Premium 4 mobile app
Click to expand...
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You on the i337m so yea it works for you but not those on the i337.
Sent from my Nexus 5

4.4.2 root nb1

I have a question. If nb1 is unrootable now, how can a pre rooted nb1 rom exist? And also, if i use safestrap method, since safestrap installs the rom along the stock, wont the usable internal storage become smaller?
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
http://forum.xda-developers.com/showthread.php?t=2680868
This thread has some info.
Also, you can replace stock rom itself through safestrap
http://forum.xda-developers.com/showpost.php?p=51098619&postcount=505
See the above for how the stock rooted NB1 was made.
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[Q] Cyanogenmod installer confirmed working with AT&T GS4 SGH-I337?

The question is will my device work with the jflteusc version of the CyanogenMod Installer? I have a AT&T Samsung Galaxy S4 SGH-I337. I heard of the new CyanogenMod installer and looked at the supported devices. I saw a jflteusc (US Cellular). I don't knoiw if it will work with my AT&T S4. I don't want to **** up my phone. I'm currently on 4.4.2 NB1 stock rooted. The website I am referencing is http://wiki.cyanogenmod.org/w/CyanogenMod_Installer Any help would be great!
iTzz_KAMIKAZE said:
The question is will my device work with the jflteusc version of the CyanogenMod Installer? I have a AT&T Samsung Galaxy S4 SGH-I337. I heard of the new CyanogenMod installer and looked at the supported devices. I saw a jflteusc (US Cellular). I don't knoiw if it will work with my AT&T S4. I don't want to **** up my phone. I'm currently on 4.4.2 NB1 stock rooted. The website I am referencing is http://wiki.cyanogenmod.org/w/CyanogenMod_Installer Any help would be great!
Click to expand...
Click to collapse
Did you use safestrap and deadly venom kitmat magic tool in install 4.4.2 stock rooted? If so, you cannot get CM to work.
Yes I did. If I upgrade to NC1 stock unrooted, would that work?
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You have a locked boot loader that prevents from changing the kernel. So, no.
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Tap on the link I put in the thread and read the FAQs
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iTzz_KAMIKAZE said:
Tap on the link I put in the thread and read the FAQs
Sent from my SAMSUNG-SGH-I337 using XDA Premium 4 mobile app
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Click to collapse
There has to be a reason why only ATT S4 is missing from the list, right?
Yea I downloaded the app and it said device unsupported
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Has anyone ventured to trying the installer in the unsupported mode? Is there a reasoning behind this and safe to try if I'm already rooted and TWRP? I thought there already was an ATT compatible build.
DaRacerz said:
Has anyone ventured to trying the installer in the unsupported mode? Is there a reasoning behind this and safe to try if I'm already rooted and TWRP? I thought there already was an ATT compatible build.
Click to expand...
Click to collapse
If your bootloader/firmware were MDB or MDL you could try it. Above that there is no exploit for the bootloader out yet so you can not install the CM.
Yes I'm on the same adventure with my sgh-i337. I'm going back and forth between MK2 and NB1 ROMs but cannot get MDL or MDB flashed at all. I got them from samfirmware and Odin fails. I tried kies and it says firmware available is MDL ... Well great, but then it says device not recognized!
I'm really torn between why is it we can get to MDL to flash CM?
Instructions:
http://wiki.cyanogenmod.org/w/Install_CM_for_jflteatt
Edit: once updated to MK2 there is no going back. Bootloders are locked and that is the end of the story. No more CM or CWM recovery or Loki ... Just safestrap and custom ROMs.
Sent from my SAMSUNG-SM-G900A using XDA Free mobile app
Just as a final reference for all: CM installer is not for the I337.
On MF3 and above, we have no exploit for ROMs and Cyanogenmod is not compatible with our stock kernel.
Even on MDB/MDL it won't work because you need Loki which the installer doesn't take care of AFAIK (if it were to even let you open it).
Sent from my SGH-I337 running GPE

Need some help for next steps.

I originally rooted my i337 s4 using motochopper but then updated to kit kat and of course it wiped my root. Recently I rooted using towel root now I'm rooted again. I would like to flash an official Rom, but not sure the steps I need to go through first.
Specs: i337 at&t
Ucufnb1
Kernel 3.4.0-505595
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Read the first few posts of http://forum.xda-developers.com/showthread.php?t=2616221

[Q] questions on NJ4

i just bought an at&t galaxy s4..came with 4.4.4 NJ4. i already safestrapped and rooted it. just need a final answer on couple things. can i install cm12, the thread says MDL n MDB bootloaders, nothing definitive on NJ4..
No, you can't flash cm.
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