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Snapdragon 835 Root Idea

I don't fully understand the process of unlocking a bootloader on a phone, but what makes a Samsung phone so difficult to unlock? For instance could we unlock this phone using the same method as went use on other phone with a Snapdragon 835 processor?

State.of.mind said:
I don't fully understand the process of unlocking a bootloader on a phone, but what makes a Samsung phone so difficult to unlock? For instance could we unlock this phone using the same method as went use on other phone with a Snapdragon 835 processor?
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It's not difficult to unlock, it's impossible to unlock. The team of guys who achieved root access on an SD835 S8 used a root exploit to get root on the phone, the bootloader is still locked and they won't be able to flash anything that isn't signed by Samsung.
As for your second question, ABSOLUTELY NOT.
Each OEM has a different way of unlocking their devices bootloaders.
Sony and HTC email you an unlock code after you submit your IMEI for bootloader unlocking, only with that code you can unlock your device.
Samsung phones (on applicable devices like Exynos ones), simply have a switch in developer options for OEM Unlock, just like Google's Pixel and Nexus devices, once that option is enabled, consider the bootloader 'unlocked', and you should be able to flash whatever you want, regardless of whether it's signed by Samsung or developed by some guy in his moms basement.
TL;DR:
No.

murtaza02 said:
It's not difficult to unlock, it's impossible to unlock. The team of guys who achieved root access on an SD835 S8 used a root exploit to get root on the phone, the bootloader is still locked and they won't be able to flash anything that isn't signed by Samsung.
As for your second question, ABSOLUTELY NOT.
Each OEM has a different way of unlocking their devices bootloaders.
Sony and HTC email you an unlock code after you submit your IMEI for bootloader unlocking, only with that code you can unlock your device.
Samsung phones (on applicable devices like Exynos ones), simply have a switch in developer options for OEM Unlock, just like Google's Pixel and Nexus devices, once that option is enabled, consider the bootloader 'unlocked', and you should be able to flash whatever you want, regardless of whether it's signed by Samsung or developed by some guy in his moms basement.
TL;DR:
No.
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If you're using a phone with an unlocked boot loader could you in theory switch between operating systems? For instance could I flash a rom to run Lollipop on one slot and on another slot run Nougat?

State.of.mind said:
If you're using a phone with an unlocked boot loader could you in theory switch between operating systems? For instance could I flash a rom to run Lollipop on one slot and on another slot run Nougat?
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Most phones don't have 'slots'. It's not a common thing yet.
The Google Pixel and Moto Z2 are the only ones that come to mind that have A/B partitions for seamless OS updates and in theory (on a Pixel), one should be able to flash Nougat on Slot A and Android O on Slot B, however I wouldn't recommend it at all, I always like having the same sh*t on both slots.
Also, Lollipop and Nougat are too far apart and there is no device in existence that has its OEM ROM based on LP and N. So no you wouldn't be able to.

How To Root S7 930U on TMobile Network???? I've searched xda and youtube

So my s7 930u is here. I've found hundreds of methods on here and youtube and odin just fails..
Who has rooted their s7 930u android 7.0 phone. And what exact method did you use. This is getting ridiculous

tried this https://www.youtube.com/watch?v=KawiIZ4bAV8
annnnnnnd now my phone is bootlooped
im flashing 7.0 stock firmware (latest update) with odin 3.12.10
seemed to be the only odin that flashed bl + ap + cp + csc correctly for me
if anyone has the latest method used to root this phone id greatly appreciate a link or tut

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Since the US models have a locked bootloader, it's much harder to root than international. I think they'll reject anything from Odin that isn't official firmware.
You might have more luck in the US/Snapdragon specific sections of the forums, near the bottom: https://forum.xda-developers.com/galaxy-s7

Beanvee7 said:
Since the US models have a locked bootloader, it's much harder to root than international. I think they'll reject anything from Odin that isn't official firmware.
You might have more luck in the US/Snapdragon specific sections of the forums, near the bottom: https://forum.xda-developers.com/galaxy-s7
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I thought oem unlock was unlocking the bootloader? I can simply do that in developer options.

OEM unlock as in the developer settings menu? That toggle only works on Exynos (930F/FD/W8) devices, on Snapdragon (930U/V/T/P/A) it doesn't actually do anything. SD bootloader has and likely will always be hard locked.

Beanvee7 said:
Since the US models have a locked bootloader, it's much harder to root than international. I think they'll reject anything from Odin that isn't official firmware.
You might have more luck in the US/Snapdragon specific sections of the forums, near the bottom: https://forum.xda-developers.com/galaxy-s7
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Beanvee7 said:
OEM unlock as in the developer settings menu? That toggle only works on Exynos (930F/FD/W8) devices, on Snapdragon (930U/V/T/P/A) it doesn't actually do anything. SD bootloader has and likely will always be hard locked.
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So why all the tutorials and YouTube videos on all the different methods of rooting snapdragon s7 if the bootloader doesn't unlock for root. Wtf

I've never watched them so I can't say, but I would assume they would use round about methods to do it? For example Exynos is simply flash TWRP on with Odin, then flash a SU zip.
Do the youtube videos tell you to do that with the snapdragon models, or is it some arbitrary multi step process? The only way I can imagine rooting Snapdragon is exploiting security flaws. I've also seen mentions of flashfire but I don't know what it does.
Like I said you'd have better luck going to the AT&T/T-mobile/Verizon etc sections. This area of the forum is mostly for Exynos.

I don't even know what this phone classifies under.
It was a Verizon phone, with Verizon logo on back.
Unlocked.
Now it's on TMobile Network.

aarongotgame said:
I don't even know what this phone classifies under.
It was a Verizon phone, with Verizon logo on back.
Unlocked.
Now it's on TMobile Network.
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Isn't there a method to unlock a bootloader?

Carrier unlocked just means you can use it on any carrier network, which is you've got.
But bootloader lock is at a firmware level, and can't be done for any US model S7.
Since all the US models are basically the same, any guide in any of their sections should work for any other model. Yours is a G930V but you can use any guide or firmware from any other US model S7.

You need to root using an engineering bootloader. Not sure if there's a version compatible with the latest update.
You will have problems, as eng BL is not stable, and your battery will not charge past 80%.

So basically is really difficult/impossible Root a 930u? and more difficult flash with a custom firm?
Investigating because just buy a Samsung S7 gm-930u and want to debloat it.
How can i know if is a snapdragon? I am on new zealand not US.

Rooting is difficult, flashing custom firmware, as in a ROM is basically impossible on snapdragon SoC's. With a locked bootloader you can't modify the boot image which is needed for ROMs.
To check your model boot into download mode by turning it off, then pressing and holding vol down + home + power. In there it will tell you your model, being in new zealand you should be on a SM-G930F or FD unless you grey imported.
Same button combo for ~10 secs gets you out of download mode.

Yes is the grey and is 930U pitifully.
So I should sell it and buy another one haha
Thanks for the advice.

Bootloader unlock G930U

Any chance 9f bootloader unlock since the oreo update is out?

Unlikely and so far nothing new indicating it's going to happen.

Beanvee7 said:
Unlikely and so far nothing new indicating it's going to happen.
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If someone WAS able to unlock the bootloader, who would be building the roms?

Anyone? A lot of the Exynos ROM's are peoples own projects or unofficial ports of known ROMs, don't know why it'd be any different for the 930U

So did Samsung put the OEM unlock button in Developer Options as a joke? I have a G930T and the switch does nothing but flip back and forth. If i was at Samsung I'd find it hilarious I have to admit

Gregbmil1 said:
So did Samsung put the OEM unlock button in Developer Options as a joke? I have a G930T and the switch does nothing but flip back and forth. If i was at Samsung I'd find it hilarious I have to admit
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I think oem unlock is suppose to allow your device to not lock to a specific sim card when you insert one

OEM unlock unlocks the bootloader, but only for Exynos chipsets. There is no user accessible way of unlocking a phone from its carrier beyond calling the carrier.
It's present in the snapdragon US models, but does nothing. But that's the fault of US carriers strong arming Samsung into not letting US models be bootloader unlocked.

Is there a way to speak to Samsung officials for them to allow us to unlock bootloader?

You'd just get a canned response

Beanvee7 said:
You'd just get a canned response
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Darn it. Ok

Beanvee7 said:
You'd just get a canned response
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Do you think, since a lot has changed then, that there is a version of C.F. Auto root exists for the Binary 10 version of the SM-G930U? went to flash the version for my device from the website and I got the SECURE CHECK FAIL: recovery error, same as if you were installing the wrong firmware for your device... Not quite sure what to do here xD

How to unlock the bootloader on the A42 5G?

Alright I've managed to get the A42 5G into developer mode, and debug enabled. But the bootloader isn't unlockable within developer mode options.
How to unlock the bootloader?
Thanks!

OK appears that unlocking the bootloader on US versions of the Galaxy A42 are not available. (at least) Verizon doesn't provide the "unlock" command to the "oem" command, ie;
sudo fastboot oem unlock
The Volume+- and side key combination will only go as far as "download" mode. Using the Volume+ that should take you to the bootlock confirmation, does not (nothing happens).
So at this point, until, or unless someone comes up with some way to overcome these limitations. Those of us with the Samsung A42's will either need to trip KNOX brute forcing an image on the phone. Or live with a stock Galaxy A42. :-(

1. All North American Samsung models have been bootloader locked (and do not have the OEM unlock option) for years now.
2. You can't brute force a custom recovery or custom anything else with a locked bootloader
If you want an unlockable and rootable phone, don't buy a North American model - simple as that.

iBowToAndroid said:
1. All North American Samsung models have been bootloader locked (and do not have the OEM unlock option) for years now.
2. You can't brute force a custom recovery or custom anything else with a locked bootloader
If you want an unlockable and rootable phone, don't buy a North American model - simple as that.
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Necroposting, lets go. What if we just don't care about knox?

TheVideoEffect said:
Necroposting, lets go. What if we just don't care about knox?
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Re-read item #1 again when you're not so tired

iBowToAndroid said:
Re-read item #1 again when you're not so tired
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Yeah I posted that at 3 AM .-.

Question Z Flip 4 Canada version SM-721W OEM unlocking N/A

Hello!
just got my samsung z flip 4 today and was woundering if this phone is rootable yet. I have the canadian version with Telus SM-721W.
Im looking to root the phone but i am not able to find the OEM unlocking on the Dev. Page
Any info would help!
Thanks

Lunancio said:
Hello!
just got my samsung z flip 4 today and was woundering if this phone is rootable yet. I have the canadian version with Telus SM-721W.
Im looking to root the phone but i am not able to find the OEM unlocking on the Dev. Page
Any info would help!
Thanks
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Click to collapse
OEM unlocking is not possible on US or Canada variants

SandFromUndertal said:
OEM unlocking is not possible on US or Canada variants
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Will they ever be available to OEM unlock?

Lunancio said:
Will they ever be available to OEM unlock?
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Sadly no, they never will. And I feel your pain. I had a Note 10+ that I would have abused the **** out of if it had an unlockable bootloader.

SandFromUndertal said:
Sadly no, they never will. And I feel your pain. I had a Note 10+ that I would have abused the **** out of if it had an unlockable bootloader.
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Since when did they decide to do this?

Lunancio said:
Will they ever be available to OEM unlock?
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I came across a defcon presentation called,
"Breaking the Android Bootloader on the Qualcomm Snapdragon 660".
It would appear that it is certainly possible to bypass a locked bootloader, Two interesting methods that were mentioned,
"The most commonly used approach is to access Qualcomm Emergency Download mode. This is a low-level emergency state boot mode, where diagnostics tools can be used to upload a signed “loader” payload to the chip, which can be used to modify the device’s partitions directly. While this approach is effective, it requires the ability to boot into the mode, which is not always made directly available to users, and access to a signed loader ELF which may not be available for the device.
The second common approach is to attack the device at a hardware level. By disassembling the phone, and connecting to EMMC chip on the board, it is possible to set the “unlock” bit in the configuration partition and gain unlocked access. Public resources exist which outline which pins should be connected to, however this usually requires some hardware knowledge and steady hands. There is also a high risk of irreparably damaging the device."
The rest of the presentation explains how the bootloader lock was bypassed via an exploit.
Ive also heard that exploiting flaws in Qualcomm's chips has become a common way to root bootloader locked devices, If root is all your after.

Lunancio said:
Since when did they decide to do this?
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Since the Galaxy S7. Was able to unlock the bootloader of my Galaxy Note 5, then I looked up info on unlocking the bpooader of the Galaxy S7 and people on the forum for the devi e were saying that it is not possible.
P.S. Sorry for like the month late respone