Root possible for SM-G950U on Nougat 7.0? - Samsung Galaxy S8 Questions and Answers

I remember the issues with the locked snapdragon bootloader on the G950U when I was looking to root back around 2017, and talks about it maybe being possible. Fast forward several years and I haven't really looked into it ever since, and searches are giving me a mixed bag of answers. I am still on the old Dec 1, 2017 patch on nougat 7.0, would be nice to get onto 9.0 with root, but I'd be happy to stick with 7.0 or 8.0 if it means having a root. Have been holding out from upgrading for a long time in hopes that maybe something would come along, but if there still isn't something available for the Dec 2017 patch after all this time guess I'll just bite the bullet on the updates and look into an upgrade

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Google is sending the Android 7.0 OTA update to Nexus 6 phones running 7.1.1

If you're on 7.1.1 and get an update notification, be careful!
http://www.androidpolice.com/2017/0...-7-0-ota-update-nexus-6-phones-running-7-1-1/
Also under discussion on reddit. May be isolated to T-Mobile, but not sure. I'm running 7.1.1 with the March update on Project Fi, and haven't seen anything yet.
Just came across this online. That would suck if someone got an OTA and accepted it. Ouch.......Good thing there's custom ROMs. ?. But yeah....Beware everyone.
Sent from my Nexus 6 using XDA-Developers Legacy app
Why would anyone accept an update to 7.0 when that person clearly sideloaded and knows that they are running 7.1.1? Clearly that person was curious and bit them in the ass on first boot after the "upgrade".
What is Google doing.. Unbelievable
This was posted on reddit from a "Nexus Comminuty Manager". Seriously- WTF?
Hey All,
There was a recent OTA update for Android 7.0 that is causing confusion for some Nexus 6 users. For those of you that want to guarantee future OTA updates, you will need to get back on the 7.0 supported track. If you are experiencing issues after accepting the 7.0 update, please factory reset your device to help resolve any problems.
For any Nexus 6 users that want to continue flashing/sideloading future builds, you can stay on 7.1.1 and continue to do so.
Hope this clarifies! Nexus Community Manager
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Link to the thread
I'm just glad I flash the factory images when they're available and don't wait for OTAs, but this is beyond my comprehension.
dberthia said:
This was posted on reddit from a "Nexus Comminuty Manager". Seriously- WTF?
Link to the thread
I'm just glad I flash the factory images when they're available and don't wait for OTAs, but this is beyond my comprehension.
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Click to collapse
That actually does make sense though.
Google's response on that thread is stellar. I really can't believe how poorly they've handled N on our device. Making me second guess a Pixel 2 right now.
has there been any confirmation / clarification that after accepting the 7.0 "update", the latest 7.1.1 OTA will be immediately available for updating?
dont want to be stuck on 7.0 till april
This is funny, got my 6p yesterday
Better not move to pixel, if Google behave like that.
Custom Community vs. Burning money
2 years support on a phone plus or minus a few months for security updates is not enough for the price they are commanding.
Big disappointment... expensive phone trashed like a low end one...
Now the question is: will security patches come in both 7.1.1 and 7.0 forms?
They will for a while. In the U.S. at least, the Nexus 6 has been getting patched for 6.1, 7.0, and 7.1.1 for the last several months, depending on what carrier's SIM card was in the phone. It sounds like the patches to 6.1 may now be done with T-mobile and Fi now on 7.0. With any luck, next month will bring them all to 7.1.1, but I am not holding my breath with the way the update round has been rolling.
I am currently on 7.1.1 N6F26Q whic I think is the January update. I have not seen a March update yet but I am sure it should have come. Perhaps because I sideloaded the 7.1.1?
Presumably I can download this and sideload it to get to the March update and hopefully correct the speaker phone issue without losing data using the instructions on this page
https://developers.google.com/android/ota
https://dl.google.com/dl/android/aosp/shamu-ota-n6f26u-62ac8549.zip
veesix said:
Now the question is: will security patches come in both 7.1.1 and 7.0 forms?
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My guess is that we won't see any more updates even for security purposes.
Katt50 said:
My guess is that we won't see any more updates even for security purposes.
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No, monthly security patches at least through this September.
I think what he was trying to say was that because the "supported" track for the N6 is Android 7.0 and not Android 7.1.1, any security updates we see will only be for Android 7.0, meaning no security updates for Android 7.1.1. Given how Google has dangled the carrot for us with Android 7.1.1 and then suddenly snatched it back it wouldn't surprise me if ending support for Android 7.1.1 on the N6 is what ends up happening.
Strephon Alkhalikoi said:
I think what he was trying to say was that because the "supported" track for the N6 is Android 7.0 and not Android 7.1.1, any security updates we see will only be for Android 7.0, meaning no security updates for Android 7.1.1. Given how Google has dangled the carrot for us with Android 7.1.1 and then suddenly snatched it back it wouldn't surprise me if ending support for Android 7.1.1 on the N6 is what ends up happening.
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Click to collapse
She thinks that the Nexus 6 is done with security updates no matter if you are on 7.0 or 7.1.1. But we'll know over time.
Google should be more clear on that and just say whats up
FYI: Just did a full factory reset here and got 7.1.1 with March update. Phone runs even smoother now. 1st reset I have ever done.

Upgrading to oreo O when it's released while rooted

Will I have to wait for a developer to build an oreo room and get the bugs ironed out? (No, I cannot build it myself) or is there any chance that there will be an easy way to upgrade to oreo and keep root access intact?
It will take a Dev to port it. Taking the upgrade, if available, will erase root and custom recovery.
That said, a Dev can take the system.img and other partitions and and edit them to port it to this phone.
When I had a note 4 there were ports to the note 5, S6, S7 and note 7, Lollipop, Marshmallow, Nougat . There may even be one now for the S8.
Don't hold your breath.
Bottom line: You need to be rooted and someone needs to build a custom rom based on Oreo.
V20 is expected to get Oreo in the first quarter of 2018:
https://www.reddit.com/r/lgv20/comments/7gckad/the_g5_is_apparently_getting_oreo_before_the_v20/
Hopefully some devs will be around to root it, or provide a path from rooted machines to update without losing root.
phr00t said:
V20 is expected to get Oreo in the first quarter of 2018:
https://www.reddit.com/r/lgv20/comments/7gckad/the_g5_is_apparently_getting_oreo_before_the_v20/
Hopefully some devs will be around to root it, or provide a path from rooted machines to update without losing root.
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Click to collapse
YES!! (Hopefully) I have an unlocked AT&T version (not on AT&T) and I haven't got ANY updates, I ordered a AT&T GoPhone SIM, hopefully when I pop it in, I will get the updates

[Help Needed] A Fresh Idea to Get Root

Hello XDA community,
This is my first post on here and I hope I'm not doing something wrong in terms of protocol, but I have a rough idea on finding a root for this phone that needs support and refining from you guys, the XDA community.
My idea is this: If we can find a way to downgrade the phone software back to before the December 2016 security patch, we can run a Dirty Cow root exploit (, which is ready to go on GitHub, ) to temp root this device (or any device, in theory). Once we have temp root, we could run a program like SunShine or whatever else to turn that temp root to perm root. (SunShine currently says that, to full root this device, it needs some kind of temp root.)
Now going back to the first part about downgrading the software to before the December 2016 security update, I initially thought we could achieve this through mfastboot or RSD Lite, since they allow flashing of officially signed Motorola firmwares. However, I read that when upgrading the Moto Z, and presumably all other variants, from Android MM to Android N, the (locked) bootloader is updated, too, and will not allow downgrading, resulting in a prevalidaton error. This is where I need your help.
The question is: How can we downgrade the firmware back to MM, or some other before-December firmware, to use Dirty Cow for root. Please leave ANY suggestions in the comments.
Thank you for your time and help. I have faith that we will be able to solve this together.
I don't think you can downgrade. But i've been running this for the past 9 or so months to prevent the forced updates: https://forum.xda-developers.com/moto-z-play/themes/app-moto-z-play-apps-stop-ota-motocare-t3538812
(no idea if that would work on the z force)
Well I know there are many videos on YouTube claiming to downgrade certain Moto devices through RSD Lite or mfastboot for different budget Moto devices, but I suspect they are all fake. Nonetheless, I hope there is a legitimate way to downgrade.
I forgot to mention that if you can get a replacement Moto Z Force from Verizon, which is very easy to do in my area, they ship you a refurbished replacement, which runs marshmallow and has no updates installed, but I don't have the opportunity to get another replacement, so for anyone else, that's one way you could "downgrade" and try Dirty Cow to root the device.
I'm just going by this topic https://forum.xda-developers.com/moto-z/how-to/dont-upgrade-to-nougat-ota-t3524456
but i don't really know for sure
Wow. Now I wish I'd known about this MUCH sooner. Its too late for me. Well, in that case, try to see if you can revert back to marshmallow if you unofficially upgraded to nougat and check what month of security patches you are on. If it's before the December 2016 security patch, then you can run Dirty Cow and get temporary root. With temp root you can most likely find a way to make it permanent root.

Galaxy S8 950U downgrade from oreo 8.0 to nougat 7.0

I would like to downgrade my galaxy s8 (G950U) sprint version from Oreo 8.0 back to Nougat 7.0 but I’ve been having a hard time figuring out if it’s possible.
Looking around I’ve seen people saying that’s it’s not possible due to the bootloader which doesn’t allow you to go down from v2 back to v1.
It’s also my understanding that the fifth number from the right is the bootloader version, in this case I have version two (G950USQU2CRC5). Now, looking at the Nougat releases for the phone, the last three that were released before Oreo show that they have the version two bootloader (G950USQS2BRB1, G950USQS2BQL1, G950USQU2BQK5).
So, would it be possible to downgrade if I used one of these three versions or are there other things preventing this that don’t involve the bootloader?
Thanks.
Yes. As long as the bootloader version of the package and the bootloader version on your phone are the same, you're fine.
Also, don't flash a bootloader 3 package unless you want to completely ditch Nougat or don't want root for a long time.
Potatey said:
I would like to downgrade my galaxy s8 (G950U) sprint version from Oreo 8.0 back to Nougat 7.0 but I’ve been having a hard time figuring out if it’s possible.
Looking around I’ve seen people saying that’s it’s not possible due to the bootloader which doesn’t allow you to go down from v2 back to v1.
It’s also my understanding that the fifth number from the right is the bootloader version, in this case I have version two (G950USQU2CRC5). Now, looking at the Nougat releases for the phone, the last three that were released before Oreo show that they have the version two bootloader (G950USQS2BRB1, G950USQS2BQL1, G950USQU2BQK5).
So, would it be possible to downgrade if I used one of these three versions or are there other things preventing this that don’t involve the bootloader?
Thanks.
Click to expand...
Click to collapse
did you ever get the chance to downgrade? could you please let me know how you did it? please include links to the files that work for you. thanks!

New device Rootable?

I am thinking about getting this phone as it’s on sale now. Is the phone be able to be unlocked and rootable out of the box? What if it’s updated to latest version? Will it still be able to be unlocked and rootable?
Theoretically, yes, you can root, till you are on Oreo with June Security Patch. And you have to pay for that. Nokia had disabled the bootloader unlock vulnerability with the August patch.
My device came with August patch, unlucky me xD.
However, I know one guy who managed to convince Nokia service centre to downgrade his device to Oreo June Patch, back from Pie. He's also rooted and flashed GSI on his 6.1 Plus.

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