|HELP|custom recovery + root + unlock bootloader| - AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin

I'm planning on getting a AT&T Samsung Galaxy S4 SGH-I337. I've been looking through the android development thread and came across some some threads with TWRP and some other root methods. I heard that AT&T came out with a few new updates for the phone that effects some of the root methods and I don't know which one or if any. I know how to flash recoverys and ROMS through Odin, but I have no clue how to unlock the bootloader for the GS4. I also don't know any other methods of flashing recoverys or ROMS outside of Odin. BTW I plan on flashing cyanogenmod 11. I've only owned samsung phones. I'm new to this phone so I would appreciate any help.
Thanks

What's your baseband number.
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seedeh said:
What's your baseband number.
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Click to collapse
I have no idea what baseband is lol

Setting>more>about device> baseband version
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---------- Post added at 09:39 PM ---------- Previous post was at 09:34 PM ----------
Oh wait I just saw you are planning to.
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seedeh said:
Setting>more>about device> baseband version
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In the post I said I was planning on getting the GS4. I don't have the phone yet so I don't know, but I wanted to know if I could do all of this because if I can't then I'll get a different phone.

iTzz_KAMIKAZE said:
I'm planning on getting a AT&T Samsung Galaxy S4 SGH-I337. I've been looking through the android development thread and came across some some threads with TWRP and some other root methods. I heard that AT&T came out with a few new updates for the phone that effects some of the root methods and I don't know which one or if any. I know how to flash recoverys and ROMS through Odin, but I have no clue how to unlock the bootloader for the GS4. I also don't know any other methods of flashing recoverys or ROMS outside of Odin. BTW I plan on flashing cyanogenmod 11. I've only owned samsung phones. I'm new to this phone so I would appreciate any help.
Thanks
Click to expand...
Click to collapse
There is no way to unlock the bootloader. If you're just getting the device it's going to come with mk2 or nb1 firmware. There is a root method for mk2 but there currently is not a root method for nb1. With that said, there is a way to use a rooted rom on nb1.
i would highly suggest you read up on mk2, safestrap, and nb1. Look in the general forum, start with the stickies and then about the first 10 threads in general.
Sent from my Nexus 5

No. Not currently. The s4 is currently not rootable and if you use the method to get back to MF3 you can't use TWRP only safestrap. Also, you can't unlock the bootloader in anything MK2+.
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No. Not currently. The s4 is currently not rootable and if you use the method to get back to MF3 you can't use TWRP only safestrap. Also, you can't unlock the bootloader in anything MK2+. <br />
<br />
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You can't get back to mf3 and the bootloader was never unlocked. There was just an exploit to get around the locked boot loader with firmware prior to mf3
Sent from my Nexus 5

Related

[Q] Rooting and Bootloader questions.

Hi!
I got S4 at At&t today. (excited ) I begun to read threads after threads. I came across this link:
http://forum.xda-developers.com/showthread.php?t=2283918
So, after that, I gonna do set up CWM nandroid back up?
What about Bootloader? I have experience on previous device, Verizon Samsung Galaxy s3 unlocked bootloader.
Then install At&t roms only?
I have S4 on at&t about device...
Model number - SGH 1337
Android version - 4.2.2
baseband version - 1337UCUAMDL
build number JDQ39.1337UCUAMDL
Thanks for reading!
Anyone know about device locked or unlocked bootloader?
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LeonKnight12 said:
Anyone know about device locked or unlocked bootloader?
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Click to collapse
It has a locked bootloader
Also, you are lucky to still be on MDL firmware, DO NOT update to the MF3 firmware or you will lose ability to root your S4. My advice would be to remove sim card and turn off Wifi (to prevent accidentally updating) then root phone with Motochopper. Once rooted go freeze the update apks to ensure it does not update on you later. MF3 is unrootable as of now so DO NOT update if you want root!
I think you mean MF3. And yes, you have a locked bootloader, you should use this...and he is right do NOT do a update, once you do you lose root, and there is no way back just yet.
http://forum.xda-developers.com/showthread.php?t=2297900
Got it. Thanks!
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S4 Updates, Flashing...

Hello,
I have been trying to figure out a few things with the S4 and read a lot of stuff but I have a few unanswered question.
I come from using NExus phones since Nexus 1. Unlock Phone, install CWM and then use it to flash roms or rooting scripts.
Now, I have S4. I am still with their STOCK on I337M (Canadian Model) and I rooted using CF-Auto-Root and ODIN.
What I don't understand, is:
- Can I flash CWM and then just use CWM and SuperSU-vx.xx.zip to root? Why Use Odin?
- Now that I am rooted, if I new SAMSUNG firmware comes along, I am assuming it will fail, I will have to unroot and then apply firmware and then root again? How do I unroot? "Full Unroot" from the option in the app just like the Nexus phones?
- S4 has a counter from what I read, but lot's of warning about bricking phone is that only active on Samsung stock? What if I flash a google stock?
- Can I just use Rom Manager Pro as I used to with Nexus devices...
if I flash CWM, is it replacing ODIN? Is odin a recovery like Odin! If anyone can point out and explain the difference between CWM , ODIN, Nexus phones and S4 it would be great...
I know that now when I go to download mode (Is that like fastboot?) it shows binary as being custom, but I don't get a yellow triangle when I boot...
Thanks for any info regarding explaining what ODIN is...
I also noticed although I have 16GB phone, 6.38GB is system! That is huge! Is that normal?
There are some nice features that I would not like to lose, so I stuck with samsung and just use NOVA home screen...
This is actually the "ATT Galaxy S4Active" forum. S4 forum will have answers to all your S4 questions.
Sent from my SAMSUNG-SGH-I537
Opps will get in trouble now.. now sure if I can move it or delete amd repost..
Thanks...
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ssss25 said:
Opps will get in trouble now.. now sure if I can move it or delete amd repost..
Thanks...
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Click to collapse
Hi,
It seems that you have been around the houses.
The place you are looking for is HERE
Thanks.. I will do some more reading to try to find answers.. looks like my post just got moved.
Thanks
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Thanks. I found a lot of info at..
http://forum.xda-developers.com/showthread.php?t=2301762
Only thing I still wonder is about updates that samsung releases. It will remove root? I guess I have to wait till chainfire has a rooting script then update.
Thx.
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ssss25 said:
Thanks. I found a lot of info at..
http://forum.xda-developers.com/showthread.php?t=2301762
Only thing I still wonder is about updates that samsung releases. It will remove root? I guess I have to wait till chainfire has a rooting script then update.
Thx.
Sent from my SGH-I337M using Tapatalk 2
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Click to collapse
I just went through the un root because I was only using it for one thing. I ended up flashing the original ROM using Odin then doing a factory reset and cache wipe. Now waiting for the update not sure I will root until S4 is not longer updated by Samsung.
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ssss25 said:
Thanks. I found a lot of info at..
http://forum.xda-developers.com/showthread.php?t=2301762
Only thing I still wonder is about updates that samsung releases. It will remove root? I guess I have to wait till chainfire has a rooting script then update.
Thx.
Sent from my SGH-I337M using Tapatalk 2
Click to expand...
Click to collapse
Hi,
Look HERE
OTA will remove root,and the latest will lock down your bootloader.
Hi
I have AMG1... I think this is the latest one but I was able to root.. Will locking boot loader prevent rooting.. Could it be another one for at only?
Thanks
Note: yes. I did notice chainfires note.. But he doesn't say what load is the latest.. There are so many Samsung s4 models devices.. Each with different models its so confusing
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I just installed CWM on latest version of Canadian I337M AMG1... Its good so far.
Xda modder.. There are differences between i337 att and Canadian i337m.. No forum specific to the Canadian folks?
Thanks...
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[Q] How to root 4.2.2 AMF3

Hi im new to the ATT galaxy s4 world and my friend wanted me to root his phone for him and install kit kat, but i have a tmobile s4 and mine was extremely easier to root and mess with without any problems. But i really dont want to screw over his phone because i dont really understand the what Loki kernal or patches are and i guess i need to do them to flash roms? Could someone help me step by step on achieving root and custom recovery?
First things first. What firmware is the phone on? That will determine how your going to root and if u have to use safestrap because the bootloaders locked on the latest ota
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SelfElevated2 said:
First things first. What firmware is the phone on? That will determine how your going to root and if u have to use safestrap because the bootloaders locked on the latest ota
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its on amf3
Tyler.Boston1 said:
its on amf3
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Uggh. Unfortunately your bootloader is locked. Your going to have to use the safestrap method and I havent looked into it bcuz I rooted before mf3 came out. The roms you can flash is also limited.. ill grab you a few links to get you on track
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---------- Post added at 12:50 PM ---------- Previous post was at 12:49 PM ----------
This thread has everything you need to know about what u can and cant do on mf3
http://forum.xda-developers.com/showthread.php?t=2428254
And here is the safestrap thread
http://forum.xda-developers.com/showthread.php?t=2448925
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[Q] AT&T Galaxy S4 4.3 Build Ending with MK2

Hi there,
Sorry, I am new to XDA.
Is there a root available for AT&T Samsung Galaxy S4 i337 which have been upgraded to 4.3 OTA. The build number ends with MK2 ?
I have looked at other threads but can't seem to find one of those straight forward tutorials for 4.3
Can anyone guide me in the right direction. Thanks.
whizzykash said:
Hi there,
Sorry, I am new to XDA.
Is there a root available for AT&T Samsung Galaxy S4 i337 which have been upgraded to 4.3 OTA. The build number ends with MK2 ?
I have looked at other threads but can't seem to find one of those straight forward tutorials for 4.3
Can anyone guide me in the right direction. Thanks.
Click to expand...
Click to collapse
somone can correct me if i'm wrong, but i dont think there is a safe way to do it right now. There is only vroot kingo, which are both unsafe as one pulls your binaries from your computer and the other pulls your IMEI and sends it to the china server.
Root for 4.3 mk2
eric303 said:
somone can correct me if i'm wrong, but i dont think there is a safe way to do it right now. There is only vroot kingo, which are both unsafe as one pulls your binaries from your computer and the other pulls your IMEI and sends it to the china server.
Click to expand...
Click to collapse
Yes there is. I just Rooted mine yesterday. Go to kingoapp.com and download ver. 1.1.5.1792. I had to run through it twice, but now I can utilize the apps I couldn't before, like SuperUser & AdBlock.
chameleonic said:
Yes there is. I just Rooted mine yesterday. Go to kingoapp.com and download ver. 1.1.5.1792. I had to run through it twice, but now I can utilize the apps I couldn't before, like SuperUser & AdBlock.
Click to expand...
Click to collapse
Isn't that the same as the Chinese vroot, but in English? Idk if I trust a commercial rooting program.
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Hey I post a similar thread and u heard it was male ware so I wouldn't try it
jsimsfour said:
http://forum.xda-developers.com/showthread.php?t=2531153
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Click to collapse
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
Mal-Ware exists on vRoot, not KingoApp. It's clean and I have root.
So if i root with kingo will i be able to flash a rom? or does at&t have a locked bootloader?
pmedeiross said:
So if i root with kingo will i be able to flash a rom? or does at&t have a locked bootloader?
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Click to collapse
It is still locked, so no ROMs.
Dont bother with broot or kingo.I suggest chilling out patiently and wait for a safe method..NO RECOVERY AVAILABLE (BOOT LOADER) LOCKED...here is info backing what I just SAID..PERIOD!!!!!!
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---------- Post added at 08:13 PM ---------- Previous post was at 08:13 PM ----------
http://androidfannetwork.com/2013/11/08/psa-kingo-root-and-vroot-malicious/
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r1tesh said:
Dont bother with broot or kingo.I suggest chilling out patiently and wait for a safe method..NO RECOVERY AVAILABLE (BOOT LOADER) LOCKED...here is info backing what I just SAID..PERIOD!!!!!!
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---------- Post added at 08:13 PM ---------- Previous post was at 08:13 PM ----------
http://androidfannetwork.com/2013/11/08/psa-kingo-root-and-vroot-malicious/
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Click to collapse
It's an opinion that root is usless.i have root and am patiently waiting for what comes next.no reason to come off so hard
ROOTED ATT MK2 using Tapatalk
Kingo works
I tested also and it works on MK2 4.3:good::laugh:
Kingo Android Root worked just fine for my MK2 build S4. The easiest way on any Android device I've ever rooted.
http://forum.xda-developers.com/showthread.php?t=2565758
worked for me on mk2 att
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jsimsfour said:
http://forum.xda-developers.com/showthread.php?t=2565758
worked for me on mk2 att
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Click to collapse
Please follow this link. Kingo, vroot etc. aren't worth the worry. This method is fast and efficient. Anyone who tells you root isn't worth it doesn't know what they are talking about. At the very least you can delete the bloatware!
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Is downgrade possible?

I have a rooted att s4(sgh-I337) that has been updated to 4.4.2 Is it possible to downgrade to 4.2.2 or 4.3?
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Well if your ok with tripping the Knox flag it can be done. Otherwise no. I accidentally tripped mine trying to just this and now I can install whatever I want. Beware when I downgraded to 4.2.2 I got no WiFi and no sound. There are fixes but none seemed to work for me. Anyway updated back to 4.4 then rooted installed cwm and install tasks aokp 4.4.4. Running like a dream now
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Downgrade is not possible to any versions below KitKat on the sgh i337. The bootloader won't allow it being that its looked. If you try you can potentially brick your device. Best we can do as of now is root and safestrap recovery. Until the devs find an exploit to the bootloader The s5 face the same issues so if they find a fix there well most likely get the same workaround.
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---------- Post added at 10:37 PM ---------- Previous post was at 10:34 PM ----------
Psykologikal said:
Well if your ok with tripping the Knox flag it can be done. Otherwise no. I accidentally tripped mine trying to just this and now I can install whatever I want. Beware when I downgraded to 4.2.2 I got no WiFi and no sound. There are fixes but none seemed to work for me. Anyway updated back to 4.4 then rooted installed cwm and install tasks aokp 4.4.4. Running like a dream now
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Click to collapse
How did you downgrade from KitKat without bricking. Last I checked the nc1 bootloader didnt permit that.
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androidfine16 said:
Downgrade is not possible to any versions below KitKat on the sgh i337. The bootloader won't allow it being that its looked. If you try you can potentially brick your device. Best we can do as of now is root and safestrap recovery. Until the devs find an exploit to the bootloader The s5 face the same issues so if they find a fix there well most likely get the same workaround.
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---------- Post added at 10:37 PM ---------- Previous post was at 10:34 PM ----------
How did you downgrade from KitKat without bricking. Last I checked the nc1 bootloader didnt permit that.
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Click to collapse
+1
Magic? Honestly I'm not sure. Once the Knox flag was tripped Odin allowed the downgrade. Previously it would not. Still tho no WiFi and no sound unfortunately. Even when I installed custom Roms from cwm on 4.2 no WiFi and no sound. I believe it allowed me to flash the bootloader over but I'm not too sure. I will try again and report.
Was on ne1 4.4 stock and I have the Canadian edition i337m
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That is odd . try flashing a kit Kat ROM and see maybe thall fix sound
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Psykologikal said:
Magic? Honestly I'm not sure. Once the Knox flag was tripped Odin allowed the downgrade. Previously it would not. Still tho no WiFi and no sound unfortunately. Even when I installed custom Roms from cwm on 4.2 no WiFi and no sound. I believe it allowed me to flash the bootloader over but I'm not too sure. I will try again and report.
Was on ne1 4.4 stock and I have the Canadian edition i337m
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Click to expand...
Click to collapse
The Canadian version is not locked up tight like the US ATT one is. Different beast entirely. As I understand it, Knox tripped or not, no process exists to unlock the boot loader on our US ATT I337 phones.
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My bootloader is still locked. Prior to tripping the flag I was unable to downgrade as well.
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Do you guys know if they're making any progress in the bootloader attempt at unlocking ot
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I wish somebody can find how to unlock att gs4 bootloader faster
Marduc said:
I wish somebody can find how to unlock att gs4 bootloader faster
Click to expand...
Click to collapse
Amen to that brother!
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Ok so you cant downgrade to 4.3 on the u.s. version. I can't use 4.3 roms while on 4.4.2 can I?
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Still no
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