I bought a Metro PCS galaxy s4 that has the T-Mobile 4.3 rom flashed to it. I'd like to downgrade to either an earlier Tmobile rom. Phone is currently not rooted. I do not care about the warranty flag. Any advice you can provide with regards to the downgrade, would be much appreciated. I've used ODIN before, but I found out that ODIN doesn't work with 4.3. Please help.
U cant come back to 4.2.2
I'm reading that I should be able to. Folks are referencing rooting and flashing the South Africa region specific 4.2.2 rom and from there i should be able to flash any rom I want. Is that not the case with my version??
Please reference below:
http://forum.xda-developers.com/showthread.php?t=2529573
I guess you're stuck with trying it & see what happens. Generally speaking, Joku is right, but, if someone claims it can be done using the method in that thread, then it might be possible. If you're looking for a definite answer, ask the person who suggested the workaround in that thread whether it actually worked for them or not.
I'm not trying to be lazy. I've spent time searching for how to root my S4 i337, but for a newb like myself the process is extremely confusing since there seems to be so much different information out there, and not a lot about i337. From what I've discovered Towelroot no longer works as an option after I upgraded to 4.4.2 and I've tried other approaches which have failed as well. So without further ado
Is it possible to root a galaxy AT&T galaxy s4 i337 running 4.4.2 baseband I337UCUFNI1 ? If so, could someone share the links I should look at to accomplish this task?
Maybe I need to revert back to an earlier android release ? which I'm fine doing assuming something like this link should work: http://www.teamandroid.com/2014/03/30/update-att-galaxy-s4-sgh-i337-android-442-kitkat-goldeneye-rom/2/
After I revert (assuming it's needed) could someone recommend the next steps(links/threads) to get me to either a custom rom or latest 4.4.2 stock build (I'd prefer a custom rom for fun, but i'm fine with whatever is easiest.)
I have Odin installed and understanding getting to download mode, but deciding which "link" to follow out there for instructions is not easy for a beginner so any recommended 'easiest' approaches for my device would be appreciated.
TIA
rickcr said:
I'm not trying to be lazy. I've spent time searching for how to root my S4 i337, but for a newb like myself the process is extremely confusing since there seems to be so much different information out there, and not a lot about i337. From what I've discovered Towelroot no longer works as an option after I upgraded to 4.4.2 and I've tried other approaches which have failed as well. So without further ado
Is it possible to root a galaxy AT&T galaxy s4 i337 running 4.4.2 baseband I337UCUFNI1 ? If so, could someone share the links I should look at to accomplish this task?
Maybe I need to revert back to an earlier android release ? which I'm fine doing assuming something like this link should work: http://www.teamandroid.com/2014/03/30/update-att-galaxy-s4-sgh-i337-android-442-kitkat-goldeneye-rom/2/
After I revert (assuming it's needed) could someone recommend the next steps(links/threads) to get me to either a custom rom or latest 4.4.2 stock build (I'd prefer a custom rom for fun, but i'm fine with whatever is easiest.)
I have Odin installed and understanding getting to download mode, but deciding which "link" to follow out there for instructions is not easy for a beginner so any recommended 'easiest' approaches for my device would be appreciated.
TIA
Click to expand...
Click to collapse
Subscribe to All Thing AT&T. It has all the information needed, including how to root NI1.
root
http://forum.xda-developers.com/show...php?p=55537351
look there for instructions. it works . Flash the older kernal using odin, if it fails to flash the first time. Repeat. After u get it to flash. Then run towelroot. After u install towelroot. Flash the ni1 kernal. You will keep root. Thats how I did mine.
What model (version) of s4 is exactly this phone? which software is installed on it? is it stock or not ? plzz help and tell me its complete version details
My phone is sgh-i337 or gt-i9505 ? Or only baseband version is i337...or any firmware version difference ? Help
Open the back and remove the battery. Look on the label. Unless the person who sold you the phone physically changed the label, or removed it, it will accurately tell you the hardware version of your phone.
Given that the boot loader and modem (baseband) are for the AT&T version, SGH-I337, it seems likely that the hardware is I337.
Edit: Also, check that it's not a cheap fake clone. There are apps that can check hardware, and run benchmarks, etc. Search "Genuine Galaxy" on the play store.
creepyncrawly said:
Open the back and remove the battery. Look on the label. Unless the person who sold you the phone physically changed the label, or removed it, it will accurately tell you the hardware version of your phone.
Given that the boot loader and modem (baseband) are for the AT&T version, SGH-I337, it seems likely that the hardware is I337.
Edit: Also, check that it's not a cheap fake clone. There are apps that can check hardware, and run benchmarks, etc. Search "Genuine Galaxy" on the play store.
Click to expand...
Click to collapse
On back its printed gt i9505...and I installed genuine galaxy it also says its genunine and model gt i9505......but why baseband is different :/ ?
I think my baseband is of different phone but hows that possible...
why someone would change it...
ahsandon007 said:
I think my baseband is of different phone but hows that possible...
why someone would change it...
Click to expand...
Click to collapse
I've really no clue. I'm not aware whether an AT&T modem will even work on that phone.
If the hardware is genuine GT-I9505, then you will most likely get a more definitive answer in the XDA-Developers forum for that phone.
ahsandon007 said:
What model (version) of s4 is exactly this phone? which software is installed on it? is it stock or not ? plzz help and tell me its complete version details
Click to expand...
Click to collapse
It's most likely an I337 with an I9505 system. Either way, since the bootloader is i337, that means it's locked so if it ever was an I9505 it's not now, but mist likely it wasn't ever.
I checked indownload mode its sgh i337....can I install back stock firmware ...see this site http://www.att.com/esupport/softwareUpdateArticle.jsp?sid=KB419415&cv=820
is it possible to flash through odin this stock lollipop firmware?
Finally I got it....its i337...I checked imei on imei.info it says it is i337 and also checked for blacklist its all clean....and I opened back cover and see it and its written "MADE BY SAMAUNG" ...spelling of samsung is wrong ...it means sticker and software are of 9505 and hardware are i337 at & t usa carrier....I think its changed in korea...phone is converted....now planning to download stock firmware of i337 lollipop and install through odin...
if anyone have link plz share
ahsandon007 said:
Finally I got it....its i337...I checked imei on imei.info it says it is i337 and also checked for blacklist its all clean....and I opened back cover and see it and its written "MADE BY SAMAUNG" ...spelling of samsung is wrong ...it means sticker and software are of 9505 and hardware are i337 at & t usa carrier....I think its changed in korea...phone is converted....now planning to download stock firmware of i337 lollipop and install through odin...
if anyone have link plz share
Click to expand...
Click to collapse
The boot loader is locked, so you can't do this exactly. You can install stock KitKat, install safestrap, and upgrade to lollipop that way. You need to read through the forums to understand what you are doing before you proceed. I'd suggest you do quite a bit of reading, and only flash when you are sure you know what you want to do.
creepyncrawly said:
The boot loader is locked, so you can't do this exactly. You can install stock KitKat, install safestrap, and upgrade to lollipop that way. You need to read through the forums to understand what you are doing before you proceed. I'd suggest you do quite a bit of reading, and only flash when you are sure you know what you want to do.
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Click to collapse
Send me links of threads from which I can understand and also which kitkat version should I install ...if u explain me in detail it will be helpful ..plz
ahsandon007 said:
Send me links of threads from which I can understand and also which kitkat version should I install ...if u explain me in detail it will be helpful ..plz
Click to expand...
Click to collapse
You seem to understand what you are doing. You should be able to figure this out on your own.
Start here.
Also this.
And this.
Or try some of the fine custom firmware in the Android Development forum.
ahsandon007 said:
(in a private message) Hey...there are so many things I cant understand in threads...can you plz tell me step by step how I can update to stock lollipop my sgh i337 ...safestrap etc..stuff ..thnx in advance
Click to expand...
Click to collapse
I do not own this phone, so I can't test or speak from personal experience. I already gave you the links to the information you need ^^^. I don't know if you can receive Over The Air (OTA) firmware updates. You may not be able to if you're not in USA. Also, I'm not sure if you need to be on an AT&T sim. If you can, you can get stock lollipop without root with this method: go to the "[GUIDE]Odin to Stock, Updating, Rooting, and Installing Safestrap" which is the second link. Go to the second post titled "Odin to Stock, Updating, Rooting, and Safestrap Instructions" and click the button to expand the instructions for "OPTION 1 - Stock Lollipop (No ROOT)"
If you cannot receive OTA updates, then currently your option would be to first flash NB1, manually flash the NJ4 update, root and install safestrap. In the Odin to Stock guide, perform both step 1 and step 2 under "NJ4 -- KitKat 4.4.4" After this, you can use the "[How-To] Update to I337_OC3 - 5.0.1 and KeepRoot (4/7/2015) " thread, which is the third link above ^^^.
Your third option would be to wait until the developers post a method for flashing Lollipop directly from Odin.
creepyncrawly said:
I do not own this phone, so I can't test or speak from personal experience. I already gave you the links to the information you need ^^^. I don't know if you can receive Over The Air (OTA) firmware updates. You may not be able to if you're not in USA. Also, I'm not sure if you need to be on an AT&T sim. If you can, you can get stock lollipop without root with this method: go to the "[GUIDE]Odin to Stock, Updating, Rooting, and Installing Safestrap" which is the second link. Go to the second post titled "Odin to Stock, Updating, Rooting, and Safestrap Instructions" and click the button to expand the instructions for "OPTION 1 - Stock Lollipop (No ROOT)"
If you cannot receive OTA updates, then currently your option would be to first flash NB1, manually flash the NJ4 update, root and install safestrap. In the Odin to Stock guide, perform both step 1 and step 2 under "NJ4 -- KitKat 4.4.4" After this, you can use the "[How-To] Update to I337_OC3 - 5.0.1 and KeepRoot (4/7/2015) " thread, which is the third link above ^^^.
Your third option would be to wait until the developers post a method for flashing Lollipop directly from Odin.
Click to expand...
Click to collapse
I successfuly updated to 4.4.2 stock NB1 software manually thorough odin then manually flashed NJ4 by stock recovery...now im not receiving ota update to lolipop....now what nxt to do ? should i root NJ4 and install OC3...
And actually I dont want to root i nedd unrooted stock OC3 ...if you know any direct method to flash..
After update to nj4 4.4.4 im getting delays in sending text msgs and making calls....what to do now should i flash different modem or baseband any ideas ?? :/
Now that you have updated your user account, we can see that you are in Faisalabad, Pakistan using Mobilink carrier. As far as I know, you will not be able to receive an over the air update, nor be able to use Kies to update. Someone who knows more could give a definitive answer on this.
Assuming that you will be unable to use OTA or Kies, your options are:
- root, install safestrap, install rooted OC3
- wait unitl (and if) developers post an Odin flashable version of stock unrooted OC3.
As far as your other issues, you could install the NB1 modem (baseband) and see if that clears up the issues, as it was working before.
creepyncrawly said:
Now that you have updated your user account, we can see that you are in Faisalabad, Pakistan using Mobilink carrier. As far as I know, you will not be able to receive an over the air update, nor be able to use Kies to update. Someone who knows more could give a definitive answer on this.
Assuming that you will be unable to use OTA or Kies, your options are:
- root, install safestrap, install rooted OC3
- wait unitl (and if) developers post an Odin flashable version of stock unrooted OC3.
As far as your other issues, you could install the NB1 modem (baseband) and see if that clears up the issues, as it was working before.
Click to expand...
Click to collapse
I downgraded modem to NB1 and no signal then i used OC3 modem it works bit better than previous one.....lags sometimes ...is there any way to flash 9505 modem to i337 phone ? :/
I upgraded to 5.0.1 using keeproot method of flashfire...thanks broo very very much.....
baseband problem still exists on OC3 modem....i maximum get 3/5 signal bars....can i flash i9505 modem using mobile odin or ant method ?
EDIT: i flashed successfuly 9505 modem but baseband version goes unknown and no sim/signal....is there any fix? Flashing efs?
What if I dwld 9505 lolipop from sammobile and install by odin or flashfire?
Hi guys, (sorry for the poor usage and terminology as I'm still getting acquainted with the rooting and custom rom culture)
BACKGROUND; I downgraded to Android 4.4.2 KitKat Baseband NB1, and from there rooted using towel root. This is an AT&T
SGH I337.
As stated above I'm running a rooted at&t s4 and I am trying to flash a custom rom on it. However after reading many tutorials and struggling, I've came to the conclusion that my MDL is preventing this from happening. I cannot seem to flash a rom no matter what application I use (I've tried Flashfire and TWRP with no luck) and on my most recent attempt to flash with TWRP the phone booted back to the same 4.4.2 kitkat interface and when I tried to access bootloader with home+volume up combo, a warning popped up and said secure fail kernel in the top right and in the center of the screen said "System software not authorized by AT&T found on phone." This made me come up with the conclusion that the MDL is preventing me from flashing custom roms. I've looked around and tried to find something to block the MDL, and the most common thing that pops up in the s4 forums is called Loki Doki, but I have yet to find a link that is not dead. So here I am with an s4 running KitKat which really sucks as I'm sure you guys can imagine.
That being stated, I would like some help on this and eventually be able to run a custom ROM. Any help is appreciated, Thanks !
Read the first few posts of this thread https://forum.xda-developers.com/showthread.php?t=2616221. It will give you information on what is possible and what isn't.
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