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[AT&T] How to ROOT Note 3 ATT w/ KK 4.4.2 update or Downgrade from 4.4 to 4.3 Stock

Discussion in 'Android Devices' started by jeffofgod, Jun 12, 2014.

  1. jeffofgod

    jeffofgod Member
    Thread Starter

    Just Updated my phone N900A to 4.4.2 Version and now i like to root so i can install CM11 and Free unlock for SimpleMobile Carrier, is there a tutorial for that ?? if not is there a tutorial to how downgrade from 4.4 to 4.3 stock ?

    anyone ???

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  2. agentc13

    agentc13 Daleks Über Alles

    At this time there is no way to downgrade or root the AT&T Note3 on 4.4.2. There is also no CM11 or non-touchwiz ROMs available (even for already rooted phones) either.

    I have seen recently that someone found an exploit for the S5 that should work for the note 3 but I heard that they are not releasing it at this time. So not sure if this will be possible for you anytime soon. :(
  3. jeffofgod

    jeffofgod Member
    Thread Starter

    what about it if i install the stock firmware, that will work ??
  4. agentc13

    agentc13 Daleks Über Alles

    Nope. If you took the official KK update, you are stuck.
  5. jeffofgod

    jeffofgod Member
    Thread Starter

    Is there a way to flash to tmobile?
  6. agentc13

    agentc13 Daleks Über Alles

    You might be able to get an unlock code from AT&T to be able to use it in T-Mobile, but you won't be able to flash the T-Mobile software.
  7. jeffofgod

    jeffofgod Member
    Thread Starter

    i'm stock here, looks like i forgot to enable the Debugging Mode on the phone b4 start flashing the phone, now i'm stock on download mode, i tried to install the stock firmware and it fail, any ideia how to get out of this mess ??
  8. jeffofgod

    jeffofgod Member
    Thread Starter

    having this error

    SW Rev Check Fail fused 2 Binanary 1
  9. Rukbat

    Rukbat Extreme Android User

    Bring it to an AT&T Device Support Center and see if they can reflash it for you. If they can't, they'll replace it - it's still in warranty. (Don't mention anything about versions, ROMs, unlocking or anything else. Just that the phone won't run, and someone on a forum said that they might be able to reflash it.)
  10. Marknderm

    Marknderm Well-Known Member

    I took my post away, only because I do not wish to upset anyone. My lack of education is no excuse for my ignorance. I apologize.
  11. Rukbat

    Rukbat Extreme Android User

    Figure what out?

    The reason you can't go from 4.4 to 4.3 is that there's a piece of hardware on the motherboard called "fuses" - a fuse is a write-once memory location. Once you've writen to it, you can't write anything to it again. You've "blown the fuse". When the phone came out, location 1 was written to. That makes it an A1 phone, and it ran the earliest Note 3 firmware.

    If you upgraded from the earlier versions of firmware to, IIRC, MJ5 (then NB4), the second location was written to, and the phone became A2. You could upgrade and downgrade between A2 versions (for example, an NB4 phone would still be flashed back to MJ5), but not to an A1 firmware.

    When you upgrade to KitKat, you write to the last (let's hope it's the last) fuse, making the phone A3. You can go up and down between 4.4 versions (there is or will be a 4.4.3 for the AT&T phone) but you can't go back to an A2 (NB4 or MJ5) firmware.

    There's nothing a developer can do about the hardware, once the fuse is written to, it's written to. And unless there's a goof in the firmware (that's how all roots and other little tricks are done), there's nothing a developer can do about the software. (Since it's a lot more difficult to make sure that there's not one single error in a huge piece of code that's evidently written by more than 1 person, it's a lot easier to find a little error, like 2 pieces of code that do exactly the same thing ... except that one's case sensitive. Or a line of debugging code left in the final release. [Both of which have been patched.])

    Two of the best ones are currently working on finding a way to "fake" the phone into loading a custom bootloader, one that won't verify the signature of the ROM when it loads it. They haven't found a hole yet.

    Unlock, as in unlock the bootloader? Then you know more than the rest of the industry, because so far no one knows how to do it. (There's a rumor that someone may have done it, but there's also a rumor that Elvis is still alive, so I don't put any hope in rumors.)

    It's not the app devs or ROM devs who are doing this, it's analysts - people who can reverse-engineer a piece of software deliberately written to not be reverse-engineered. That's like the difference in medicine between someone who can pull out a splinter and someone who can revive the dead. Many app devs can't even read C++ code, let alone conceive of what the C++ code looks like from the core dump they get from the update file. And that's about how it's done - look at the mud that the car splashed on the coat and figure out when it had its last oil change. If it were as easy as you indicate, there would be a root exploit for every new phone about an hour after the first one was bought, and locking a bootloader would make as much sense as locking your door by pasting tissue paper between the door and the frame.

    Compared to even finding a root exploit (which is FAR easier than figuring out how to get around a locked bootloader), writing a complex app like Maps is child's play. Any competent experienced programmer can do that. But after 40 years of writing apps, some of them of the "you can't do that" class (yes, I'm one of those who considers "you can't do that" to mean "until you figure out how"), I wouldn't even consider trying to break the N3 bootloader. It would be like a neurosurgeon doing a heart transplant. I'm good. I earned my living for 40 years doing things people said couldn't be done. (Want to see a 400 foot long data cable made of off-the-shelf ribbon cable?) But not in that area. And that's the problem - there are VERY few people who earn their livings breaking into software. And when it's a choice of a very interesting intellectual persuit or eating, most people choose to eat.

    It's, as Kang Li says, an arms race. Right now the manufacturers are ahead (on the bootloader front - we have root for 4.4 - until that hole in Linux is patched). Someone will find a hole in the boot process if there is one. (There might not be.) Then we'll have a limited time to replace the bootloader - until they patch that, and we're left with the decision of upgrading to the newest version of Android or staying with the older one but with the ability to load unsigned firmware.

    (It's why I'm still on 4.3. I'll probably update to 4.4.2 before they patch the hole that towel root uses. Or brick the phone at 4.4.2.)

    BTW, your A2 fuse says that you should still be able to use the return to MJ5 method on XDA. Running with connectivity (either wifi or mobile data) will almost immediately get you an update to NB4.
  12. Marknderm

    Marknderm Well-Known Member

    All I can say, is thank you for educating me. Some times in order to get the information that you seek, you must say things that either peek someone's intrest or upset them. I hope that I did not upset you by what I posted. That was not my intention. If I have offended you in any way, then I humbly apologize. Again I thank you.
  13. Rukbat

    Rukbat Extreme Android User

    If that was aimed at me, no offense taken, just information given.

    I recently had a cataract removed. 20 minutes staring into 2 different computer-controlled machines. $3,000 for that? It sounds as if I should be saying "anyone with those machines and 5 minutes training should be able to do what my doctor did". It's just a week now (it takes a few months for vision to stabilize) and I can read print smaller than any I've been able to read in a few decades.

    The point? Some people think that some field they never worked in is so simple that anyone can do it. (Try milking a cow by hand. Without getting kicked.) If the best people in the field haven't found an exploit yet, there either is none, or it's something it's going to take them a while (maybe a long while) longer to spot. I know what's involved. I don't pretend to be good enough to even fetch their coffee while they work. Ask me to write a forum from scratch and it'll be a boring month, but it's not very difficult software. But reading someone else's core dunp, "rethinking it" into C and finding a hole in it? I watched a video of Kang discussing how they found a few of the older (now patched) exploits. It's like anything else - simple once it's explained to you (well, and if you can read code). But guys like Kang and George (the author of Towel Root) are the guys with the knowledge, and if they haven't found it yet, there's very little chance someone else will just stumble on it. The rest of us users? We'll just have to wait and see.
  14. Marknderm

    Marknderm Well-Known Member

    Yes I was directing my last post to you. You have helped me to understand something that I did not know. I thank you for that. And I sincerely wish you the best with your eye's. You seem to be a very well thought out person in what you say. I can't claim to be very smart but I try to understand the things that I don't know. I probably should have never wrote the post that I did. But in a way I'm glad that I did because now I understand better what I didn't before.

Samsung Galaxy Note 3 Forum

The Samsung Galaxy Note 3 release date was September 2013. Features and Specs include a 5.7" inch screen, 13MP camera, 3GB RAM, Snapdragon 800 processor, and 3200mAh battery.

September 2013
Release Date

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