yashsingh1/xdaforums huggingface dataset:
[AT&T Samsung Galaxy S 4 General] Febby:
I just saw this thread where some person managed to change the bootloader and knox flag? Maybe his research or work can lead somewhere. He claims they arent efuses. Here is his post.

http://xdaforums.com/showthread.php?t=2510867

"All men are created equal, some work harder in pre-season."

- Emmitt Smith
[AT&T Samsung Galaxy S 4 General] scott14719:
My guess is that it is a similar (if not the same) process as SysScope. Maybe just named differently, but follows the same scanning process that returns either "custom" or "official" status.
[AT&T Samsung Galaxy S 4 General] hovax615@hotmail.com:
Let's get this thread up back and running for 4.3 boot loader unlock

$20 from me.
[AT&T Samsung Galaxy S 4 General] Zorachus:
I am in again.

We must get this M3 fully unlocked with a custom recovery.

Insane that ATT would lock this phone down so tight with a firmware update, WTF. This F'ing BS if you ask me. Now I can't even try out the upcoming 4.4 GPE ROM.
[AT&T Samsung Galaxy S 4 General] delachavo:
I'm in for $15
[AT&T Samsung Galaxy S 4 General] blackwing182:
ill put 50$ for a full bootloader unlock.... lets get this crap going, htc bootloaders are harder and they get unlocked.

all in with 50$
[AT&T Samsung Galaxy S 4 General] Zorachus:
Yeah HTC has had some stiff lockdowns, I remember the One X, took about 9 to 10 months after release to get S-Off and full unlocked bootloader.

Let's keep hope that the S4 MF3 won't take as long.
[AT&T Samsung Galaxy S 4 General] hovax615@hotmail.com:
Yes let's keep hope. I was stupid and updated to mf3 on my first s4 when I had MDL than on my second I was stuck with mf3 so I did SS but I found little things with Roms that I didn't like so that's why I just kept it stock rooted. But I would love to be able to flash KitKat or newer things.
[AT&T Samsung Galaxy S 4 General] slojko:
think bounty is at $300+ now, we should make new thread
[AT&T Samsung Galaxy S 4 General] beny2:
$20 for the one who will unlock the bootloader, but only if he does this in the next three months(otherwise I'll sell my S4).
[AT&T Samsung Galaxy S 4 General] hino8229:
I will throw in $20..
[AT&T Samsung Galaxy S 4 General] phobia09:
Gonna drop this link from the Verizon thread. You can show your support here as Surge has some ideas and could very well be on the edge of a breakthrough.

http://xdaforums.com/showthread.php?t=2500826

It's about time we get down to business and unlock these devices!
[AT&T Samsung Galaxy S 4 General] lgkahn:
m919

i voted with my wallet and bought two used t mobile m919 with unlocked bootloaders.. now rooted with philz recovery. work fine on at&t..

I made sure first they were paid in full so that the imei's cannot be blacklisted.
[AT&T Samsung Galaxy S 4 General] Atlantian:
50 here
[AT&T Samsung Galaxy S 4 General] Andrew149:
I'll put in $10
[AT&T Samsung Galaxy S 4 General] Zorachus:
Sweet, keeping fingers and toes crossed :D
[AT&T Samsung Galaxy S 4 General] jeboo:
This is the best action! I'm glad to see this thread have some life again. But do realize the vzw bounty has been 5k+ for months now..
[AT&T Samsung Galaxy S 4 General] bennyboy78:
Wow... 5k... I'd be all over cracking that BL If I possessed the type of skills necessary
[AT&T Samsung Galaxy S 4 General] jball:
Just a thought ,

Yes it's 5k if everyone pays up . It's still a virtual bounty. And to be clear no I haven't put up any money.i was at one point willing to put up the remaining balance of what the full price of the phone would cost.$300.
[AT&T Samsung Galaxy S 4 General] scott14719:
It sounds as if the same problem already experienced still exists. It has not been possible to flash an earlier version of the aboot to a locked phone with a blown q-fuse. If I understand that thread correctly, it is their intention to try and place an aboot file onto the phone that doesn't blow q-fuses, but used e-fuses instead. The advantage would be that e-fuses are solid based in software and (in theory) can be circumvented easier. However, it doesn't solve the issue of getting the e-fuse aboot onto the phone in the first place. Once extracted or modified from a different source, it is no longer recognized as a "signed" file. I did see some talk about modifying the key to appear as a signed Samsung bootloader, but haven't seen it done successfully. So, again, in theory maybe it can happen, but I still think it all comes down to getting the encryption of Samsung's signing figured out. And I still don't see that happening until (or if) it is leaked. Hopefully, they can figure something out.
[AT&T Samsung Galaxy S 4 General] chirpa12:
I'll throw in $10 too if it happens before I sell this thing.
[AT&T Samsung Galaxy S 4 General] nash2000:
I've had several local offers of $400 for my MF3 GS4...but I can't pull the trigger. Mostly due to not having a 2nd phone. I don't really have the flash happy mindset anymore but I still enjoy the ability to do so. Without going into great detail...what is the quick story behind locked boots? I head one reason is so we can't remove ATT's useless bloatware. Not sure how much truth is behind that one.

brought to you by my not so sexy GS4 MF3
[AT&T Samsung Galaxy S 4 General] bennyboy78:
You can remove bloat were with a locked BL. I think the real reason is so you can't get newer software (4.3, 4.4) so you have to buy a new phone from them. That's my thoughts anyaways
[AT&T Samsung Galaxy S 4 General] gj23:
I think its more along the lines of...... large corporations and military want to use this phone, but in order for that to happen, they needed the phone to be more secure. Its all about the Benjamins!
[AT&T Samsung Galaxy S 4 General] cyrusalmighty:
I have $35-40. Lets GO!!!! God d*mned AT&T sons of b****es!! They altered the device by playing middle man & getting their hands on it. Id love to get my hands on them.lol. (Please-no comments on how they did favor by not having to buy at retail price, because this is exactly how they take advantage by locking down potential of device to FORCE you to buy next device. And even after contractvtheh dont unlock it. What a favor. Next they will offer unlocking for extra $300. *Rant over*

Edit* To the comment above me....do you really think this is how they make business/militarys phones more secure? Then why force the update to phone previously purchased by non military non business customers?
[AT&T Samsung Galaxy S 4 General] jospants:
Lint in the LENSE

Does anyone know if i picked up a new phone at At&t if it would be updated to mf3? I have had this annoying piece of lint in my lense for months and im not sure if i bring my phone if they will try to fix it somehow or give me a new one. Also. i want this phone in sellable condition, to possibly get a n5, and its not with this lint crap. So idlk what to do..
[AT&T Samsung Galaxy S 4 General] arnuckwade:
20$ from me!

Damn I'm desperate to get this thing done!! I miss flashing custom roms and I wanna do it on my s4!! I hope the crappy at&t guys leave a backdoor or something in the 4.3 OTA which the devs could take advantage of and crack this thing up!! MF3 is locked like hell!
[AT&T Samsung Galaxy S 4 General] hovax615@hotmail.com:
And it's probably going to be locked tighter on 4.3.
[AT&T Samsung Galaxy S 4 General] arnuckwade:
I know.. But I still have a lil hope.. :)
[AT&T Samsung Galaxy S 4 General] nomikSqash:
25 euro from me straight away ;l

The following question arise would I get and update in Greece from at@t?(my flagship is at@t unlocked)
[AT&T Samsung Galaxy S 4 General] gj23:
Not completely locked down, you can install Safestrap and flash quite a few different Roms (have to be TouchWiz 4.2.2 only) but there are quite a few. If you've taken the 4.3 update, it might be a while before theres any custom roms and theres isnt a way to revert back to 4.2.2
[AT&T Samsung Galaxy S 4 General] jball:
Once you have Safestrap you can try out some roms.

I flashed Hyperdrive followed buy the ATT compatibility package followed by the MF3 kernel module in that order and its doing great for me after trying ever other compatible rom.another one that worked well was Google Edition 4.2.2 rom .
[AT&T Samsung Galaxy S 4 General] arnuckwade:
Ya i know about safestrap.. but since it gets us only touchwiz roms I didnt try it. I didn't take the 4.3 update, I froze the required apps. Will only update after reading what the senior members here have to say about it. :good:
[AT&T Samsung Galaxy S 4 General] shadezero:
Google Edition ROM is top kmotch.

Using that with Xposed is the closest thing I can get to running carbon nightlies.again
[AT&T Samsung Galaxy S 4 General] jrojas537:
which rom? could you post a link? i tried a couple and they did not work well for me... but all I want is a GE one.
[AT&T Samsung Galaxy S 4 General] arnuckwade:
The google edition rom is the stock android (aosp) right? Did it work for you on safestrap? If that's the case then I might actually go through the safestrap process..
[AT&T Samsung Galaxy S 4 General] jball:
In a way it is.yes its a good rom for Safestrap

4.2.2 only
[AT&T Samsung Galaxy S 4 General] NighthawkXL:
It works great, the ONLY problem with it currently is that USB connectivity doesn't work on it due to it running on the MF3 kernel opposed to the stock GPE kernel. But you can use apps like Airdroid or a external card reader to make changes to your files. I'm running Airdroid and love it I can manage my phone from just about anywhere including file transfer.
[AT&T Samsung Galaxy S 4 General] gj23:
I dont currently have the GE Rom flashed but Im pretty sure that usb connected fine on mine. Might be because I was on a Mac with Android File Transfer tho
[AT&T Samsung Galaxy S 4 General] Kamaole:
I know java. With that knowledge you can at least understand what code is doing in C and C++. The problem is, i have no idea where to start. How does one begin to look through the code and find exploits
[AT&T Samsung Galaxy S 4 General] Soccerzubs:
They're all on this page.

As you can see there are only two, I use the first one.

http://xdaforums.com/showthread.php?t=2356276

Use SS, Flash the Rom, then flash this zip so your data and wifi work.

You can also use Xposed and some mods to change clock and battery if you want.

The USB Connectivity does not work, but you can use other apps or Dropbox or Drive or just reboot into the stock slot and transfer what you neeed, it's not that big of a problem.
[AT&T Samsung Galaxy S 4 General] CZ Eddie:
Exploits are marked in red font.

Always.

Just look for the red font, then remove the # in front of it, then voila.

Now you have an unlocked boot loader.

Remember, look for the red font. :good:
[AT&T Samsung Galaxy S 4 General] jball:
So if I read this correct are you able to unlock the ATT I337 S4 .
[AT&T Samsung Galaxy S 4 General] CZ Eddie:
Sorry, no. I was just being silly. :silly:

To find exploits, you have to understand not just how to read the code itself, but also how each piece of code works and likely, how the Android OS itself works on a layer by layer level.

In other words, a newb is not going to figure it out with 1000 sleepless hours.

But if we're lucky, a freaking Android genius might find it with 1000 sleepless hours.
[AT&T Samsung Galaxy S 4 General] Kamaole:
Can't shoot me down for trying. Was just asking if anyone could tell me where to find the tools needed to do it. I'm looking through the source code right now. If I find anything, how would one make a patch for it and how would it be applied.
[AT&T Samsung Galaxy S 4 General] hovax615@hotmail.com:
Stay tuned the to this thread, http://xdaforums.com/showthread.php?t=2526591 looks like vzw forum is trying to get hashcode to implement safestrap for mj7 4.3 hopefully he can get it going on mj9 also.
[AT&T Samsung Galaxy S 4 General] jpcdeux:
If someone could answer that wouldnt it have been done?! :banghead:
[AT&T Samsung Galaxy S 4 General] Kamaole:
Not necessarily, the exploit would still have to be found. And at the moment it doesn't really look like there is any "android geniuses" that are working on it. But anyways, there has to be some documentation on how patches are generally written to exploit holes. Not asking for a "How to exploit holes guide", I just want a general idea of it.

Also, I downloaded the mf3 files from the samsung open source site. Would looking through the classes be a good place to start or should I do anything else?
[AT&T Samsung Galaxy S 4 General] lilg754367:
ill donate 250 whoever can get this bootloader unlocked on 4.3 mj9
[AT&T Samsung Galaxy S 4 General] MattMJB0188:
Not to burst anyone's bubble here, but don't you all think if the developers could unlock the bootloader, it would have been unlocked already? I gave up on the S4 months ago. If someone does manage to unlock it, there is knox, which means your warranty is void if you flash anything.

Looks like Samsung has been snacking on Apples lately. :/
[AT&T Samsung Galaxy S 4 General] jball:
:)

---------- Post added at 10:08 PM ---------- Previous post was at 10:06 PM ----------

Warranty is void upon root either way :)
[AT&T Samsung Galaxy S 4 General] Surge1223:
About aboot and flashing an older one on newer firmware..when attempting to flash an older aboot on the VZW gs4 you will get a message that says:

SW REV. CHECK FAIL: FUSED: 3, Binary: 1

Where the fused value corresponds to the currently installed firmware. So its saying the flash failed because the current aboots fuse value is set to 3 and the one you're attempting to flash is set to 1. This makes is very difficult if not impossible to flash an older aboot on a S4 with newer firmware and the fused value goes up with newer firmware (currently on the latest VZW firmware the fused value is 5). However, when attempting to flash the developer edition S4's aboot file the error you receive is this:

SECURE CHECK FAIL: aboot

So its not checked against the fuse value, but is recognized as a valid aboot but doesn't pass security. Editing the pit would allow us to put a new partition on the S4 and we might be able to get it to send the right security response by using custom headers and/or modifying where its checked at. The purpose of my other thread doesn't explicitly mention it but the goal isnt just about aboot, its about changing where/how its checked as well. We are already able to flash any firmware versions sbl1-3, rpm, modem and tz, including the ones from the developer edition.

There are probably 4 or 5 different ideas in that thread though, so there isn't simply one goal were attempting different ideas simultaneously. Sure getting the encryption key would solve all problems (not going to happen). So a WIP it continues to be..
[AT&T Samsung Galaxy S 4 General] MattMJB0188:
Yes, now it is. But with the S2, S3, and with the S4 in the beginning, we could use triangle away.
[AT&T Samsung Galaxy S 4 General] bobmandoom:
I think one thing people seem to be forgetting is that while yes there are efuses, there is also a way to completely bypass signature checking built into the ARM architecture... You can change the value of one bit and the boot loader no longer checks signatures and allows booting of insecure kernels.
[AT&T Samsung Galaxy S 4 General] jball:
Sounds easy every time I read it man and I always get my hopes up.can you achieve the unlocking/bypass so we can do what others are doing to the other variants?achieve it and the bounty will flow I'm sure of it .I'm weeks away from spending $399.00 for a Nexus 5 when I could be paying a smart individual for the bounty.
[AT&T Samsung Galaxy S 4 General] shadezero:
Yea, I've hated not being able to have USB Connectivity. Used to have to just boot into STOCK and upload files.

But now, I have GPE running on the STOCK partition, so that's over with.

I'll come up with something creative later. Maybe wireless FTP?
[AT&T Samsung Galaxy S 4 General] NighthawkXL:
Wish I could get GPE to run correctly in the stock slot, anytime I try to flash it there I boot into a system with a unknown baseband, and no IMEI # thus no signal, with or without proper APN settings and what not. It's incredibly annoying, as it happens to just about any custom ROM I put there... I went so far as to backup my EFS settings and still nothing.

So running GPE in stock fixes the USB issue?
[AT&T Samsung Galaxy S 4 General] Kamaole:
How did you manage to do that? I always thought that would blow a qfuse since you were editing the main partition
[AT&T Samsung Galaxy S 4 General] jball:
Is figuring out how to get GPE to work right going to unlock the bootloader?

Not trying to be an a!! but we do have a official Safestrap discussion thread .
[AT&T Samsung Galaxy S 4 General] shadezero:
I apologize for the derail.

I've quoted and replied in this thread:

http://xdaforums.com/showthread.php?t=2428254&page=27

:cowboy:
[AT&T Samsung Galaxy S 4 General] vishnugs:
SafeStrap on MJ9

Hi, I went through several links on the SafeStrap strategy for bypassing the locked boot loader. Can you please clarify on this point -

Does SafeStrap work on MJ9 (I337UCUEMJ9) ?

I saw that it works on Note 3's MJ7 but I could not find concrete references for MJ9. Though rooting is possible on MJ9, please correct me if my understanding is wrong.

My goal is to go to Google Edition ROM from the existing 4.3 Samsung MJ9 ROM by installing custom recovery.
[AT&T Samsung Galaxy S 4 General] NighthawkXL:
The short answer, is no. This is clearly stated many, many times around both threads about SafeStrap.

The reason being is the way SafeStrap latches onto the MF3 kernel to function, Hashcode hasn't had any luck (at least publicly) of getting 4.3 (or 4.4) ROM's to run on the MF3 (or equivalent) kernel. When and if it happens you can almost be sure your see plenty of activity on the forums... but for now we are stuck at 4.2.2 for custom ROM's with SafeStrap. Only pre-MF3 devices have the freedom of installing the newer Android revisions, at least for now sadly.
[AT&T Samsung Galaxy S 4 General] jball:
Did he retire .can he cracked this thing

ROOTED ATT MK2 using Tapatalk
[AT&T Samsung Galaxy S 4 General] failedjedi:
Edward not Eric.
[AT&T Samsung Galaxy S 4 General] hwy380:
pitching in

I will pitch in $150.
[AT&T Samsung Galaxy S 4 General] activeservo:
Unlock It's Potential

Is anyone still working on this or should I just buy an unlockable version? If I still have the phone I'll pitch in $20
[AT&T Samsung Galaxy S 4 General] cubanghost:
Do just that for now, i sold mine on ebay and bought anotherone on swappa with the unlocked bootloader.
[AT&T Samsung Galaxy S 4 General] richard_lyew:
im in USD$100
[AT&T Samsung Galaxy S 4 General] nickeedoo:
I can only add 10 to the pot but I will.
[AT&T Samsung Galaxy S 4 General] justintime001:
anyone keeping count?

What is the bounty at? Anyone know? or am I missing something? hahahaha
[AT&T Samsung Galaxy S 4 General] Zorachus:
This will be my last Samsung phone, unless we get the bootloader unlocked. At least ATT and Samsung should unlock the S4, once the S5 is out.

I know the ATT HTC One X, took 10 months to get the bootloader unlocked, so maybe same thing here.

Curious how the ATT S5 will be out of the box ? I am guessing locked down tight
[AT&T Samsung Galaxy S 4 General] DeadlySin9:
No doubt locked down tight. And as nice as it would be, they don't have to unlock our phones when the S5 is out and probably won't. But yeah, for AT&T the S5 will have a locked bootloader, Knox and any advancements made in it by then, and who knows what else.
[AT&T Samsung Galaxy S 4 General] ThoHug:
Who are the developers that are working on this directly? I have coding skills down to the assembly level and have a good hardware understanding. I would like to contribute. I have a CS degree and would like to put it to at least some use :D
[AT&T Samsung Galaxy S 4 General] DeadlySin9:
If you want too see current progress and collaborate, go to the Verizon S4 general section and join the "If we are serious about unlocking the bootloader" thread. There's some progress and a few methods being looked into.

Sent from Black<3's I337 running Hyperdrive
[AT&T Samsung Galaxy S 4 General] bazookaxxx:
This will NEVER happen. When the galaxy s6 is released a hack to unlock the s4 boot loader will be found.

I cant be the only one who wishes they stayed with their galaxy s3 instead of upgrading to s4... which btw isnt much of an upgrade.

An s3 with latest cm/aos > stock samsung/att/verizon galaxy s4.

Ill be switching to a flip phone I think. Moto rzr, circa 2003 baby.
[AT&T Samsung Galaxy S 4 General] EpicMango:
Sucks. I'm on my S4 with beautiful stock optimised Android 4.4.2 and I seriously couldn't imagine this phone without it...

Just came late on the train, the MDL train. It left the station for heaven...not making any return stops...

We have an MF3 MK2 train headed straight for hell though!
[AT&T Samsung Galaxy S 4 General] nomikSqash:
Did u flash the latest 4.4.2 on i337? If yes did u get the root? And how did u do that we still do not have the official leak only unofficial that I am scared to flash
[AT&T Samsung Galaxy S 4 General] EpicMango:
No. I am on ASOP Google Edition 4.4.2 that was ported over by Danvh. Its not the 4.4.2 leak that was just released a couple days back
[AT&T Samsung Galaxy S 4 General] LZLandingZone:
I'm off the S4. I won a Nexus 5 32GB and couldn't be happier. No locked bootloader, and tons of customization options. Time to put the S4 up on Swappa
[AT&T Samsung Galaxy S 4 General] LiLPurP:
So is there any new news about the unlocked bootloader?
[AT&T Samsung Galaxy S 4 General] Joe Antonetti:
Put me in for $20. This needs to happen. My GS4 would be the best phone I've ever owned if I had the GPE ROM on it and not the crappy TouchWiz one.
[AT&T Samsung Galaxy S 4 General] LiLPurP:
Oh yea and put me down for USD $15.00

Using:AT&T Samsung GS4 4.3 Rooted with SafeStrap Recovery
[AT&T Samsung Galaxy S 4 General] azuziel:
this is moot bc android 4.5 breaks

root, period. wont work. so by the time s6 comes, root will be ancient history. if modding is your thing, get off the samsung train. with knox and what not, they're really focusing on enterprise, instead of home users.

also this locked bootloader, seems to be strictly an American phenomenon. canadian, intl, are unlocked. knox present yes, locked no.

Sent from my SGH-I337M

---------- Post added at 11:22 PM ---------- Previous post was at 11:16 PM ----------

s4 is unlocked and has way better hardware than nexus. i dont know why i337 users are being screwed with locked bootloaders, but it seems to be a carrier/american decision. intl, and cdn models aren't locked. as i mentioned already. i like the nexus models, just wish theyd have put the better processors and boards ala s4 in them. i also miss the home button. granted i use gestures to avoid wearing it out, but when i dont have it, i miss it (had nexus 7 dev model, returned it).

cheers all. maybe time for us all to start thinking of buying unlocked or google edition phones. more and more american carriers (and oem) are locking devices. dont know why. android gained much market by being moddable/changeable, if they continue on present course, will be nothing more than an iphone, blech.

Sent from my SGH-I337M
[AT&T Samsung Galaxy S 4 General] LZLandingZone:
"S4 is unlocked and has way better hardware than nexus." Okay, so that's why you're in a bootloader unlock thread? And better hardware? S4 has a Snapdragon 600 versus the Nexus 5's Snapdragon 800. And sure, the carrier versions are locked, but on a Nexus they're never locked. Google doesn't allow them to be locked to a carrier by any means. And what processors and boards do you with the Nexus 5 had? As far as I'm concerned, the Nexus 5 is better. I haven't looked back at my locked down S4 at all.
[AT&T Samsung Galaxy S 4 General] azuziel:
everyone has their preference and opinion. i enter all sorts of threads, last time i checked that was the whole point. so because my boot loader is unlocked, i can't learn about locked versions? that's pretty ignorant. if you think the nexus is better, so be it. you're just wrong. not my job to convince you. s4 is a flasgship device for a reason. if you think a nexus can compare at half the price, again you'd be wrong. im not here to argue, and you're entitled to your opinion