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[ROOT] [Extreme Syndicate] [G965U/U1]

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Jun 19, 2021
2
1
@t_house AFAIK you should be fine, since I did mine on the same version. Just follow the directions and use the updated combo firmware that is linked by @jrkruse a few posts above this and remember to make your own bootswap image from the updated combo firmware as well.
 

xasbo

Senior Member
Feb 10, 2012
447
115
Is it possible to get TWRP onto a rooted G965U1? The fact that there's a build for it (marked as maintained by @klabit87) gives me hope, but I'm not seeing a way to defeat secureboot on this device, which seems to be blocking my flash from Odin with a customized u9+twrp tarball. I don't have an OEM unlock option under developer options either, and can't seem to even find a straight answer on whether bootloader unlock is possible at all.

Bear with me, I've been out of the loop on this stuff for years. My end goal is to flash Magisk.
 
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BlackRey

New member
Dec 3, 2016
1
0
Hey I've had my oem unlocked way back when I got the phone (around the time it came out), but I decided not to root it. Now I finally decided to do so, can I do it with this bootloader version?

Screenshot_20210707-115907_Settings.jpg
 

jrkruse

Recognized Contributor
Aug 9, 2009
8,176
12,459
Its a paid service but it works both these guys do bootloader unlocks on these devices now. Once unlocked you can use my AIO files too root install twrp etc. They are found HERE

Info For Bootloader Unlocks Can Be Found

Another Thread For Bootloader Unlocks Can Be Found
 
Its in the title of the post isn’t it


Sent from some device I modified
I have to say thank you for your generosity, with both time AND intellectual property to all of you guys in here helping people out. It's impressive to me to see the number of people that you have walked through the process, sometimes every step of it! You guys have got to have infinite patience to deal with some of the pure laziness and idiocy you deal with so professionally on the daily! I come here to learn, but I always end up feeling more like I'm watching a Jay & Silent Bob marathon most of the time..... these guys are frigging something else to the point that it is hilarious!
HOWEVER, I'm sure when I get stuck in my next mess that I get myself into that I'll sound just as desperate and completely clueless and someone else can get a laugh out of my panic induced irrational lines of overlooking the obvious and complete bypass of normal intelligent logical thoughts, LOL! Thanks ahead of time...
 

gpz1100

Senior Member
Nov 28, 2009
3,062
581
Guys - I was able to get it running on Android 10 with Bootloader Ver. 8 without issue so far.

  1. Find the combination firmware for your device that has the Bootloader Version 8 - For me it was a file named G965USQU8ATH1 (note the QU8, any lower than 8 and the file will fail to flash). If you're on a firmware with QU9 bootloader, I'm not sure if your combination file exists. If you find one, comment here for everyone else.
  2. Complete steps 2&3 from the instructions using the combination firmware file you just found.
  3. Extract boot.img and recovery.img from the combination firmware file you found in step one of this comment.
  4. Swap the names (boot.img becomes recovery.img and recovery.img becomes boot.img)
  5. Use 7zip (or other tool) to add them to a TAR file named bootswap.tar
  6. Continue instructions from the original post, starting at Step 4 with your new TAR file.

I didn't have to change any other steps or files. This got me an ATT version S9+ rooted with SuperSU.

What version of android were you on at completion? I tried these steps but it reverts the device to android 8 (oreo). I'm a bit confused by your reference to android 10 above.

Are you saying you ended up on android 10 at completion? How?
 

mrmees

Member
Nov 5, 2014
5
1
What version of android were you on at completion? I tried these steps but it reverts the device to android 8 (oreo). I'm a bit confused by your reference to android 10 above.

Are you saying you ended up on android 10 at completion? How?

I ended up on 8.0, because the newest combination firmware with bootloader version 8 I found for my particular phone (S9+, ATT) was an Android 8.0 image. If Oreo is the latest combination firmware you can find, that's what you're going to be stuck with.

This is all conjecture, I'm nowhere near knowledgeable enough about this to say definitively.
 
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gpz1100

Senior Member
Nov 28, 2009
3,062
581
I ended up on 10, because the newest combination firmware with bootloader version 8 I found for my particular phone (S9+, ATT) was an Android 10 image. If Oreo is the latest combination firmware you can find, that's what you're going to be stuck with.

This is all conjecture, I'm nowhere near knowledgeable enough about this to say definitively.
I used the combination firmware in post #194,

https://forum.xda-developers.com/t/root-extreme-syndicate-g965u-u1.4043707/post-85067547 . This is for version 9 of the bootloader. Is there a specific firmware version I need to flash to retain android 10?

Can you post a a full screen shot of your software versions (settings, about, software information)?
 

mrmees

Member
Nov 5, 2014
5
1
I used the combination firmware in post #194,

https://forum.xda-developers.com/t/root-extreme-syndicate-g965u-u1.4043707/post-85067547 . This is for version 9 of the bootloader. Is there a specific firmware version I need to flash to retain android 10?

Can you post a a full screen shot of your software versions (settings, about, software information)?
I misremembered - the phone WAS on Android 10, Bootloader V8 and I was able to downgrade to Android 8.0 with the same bootloader version. Original post edited.

I just looked, and it appears as though there's a new combination firmware that was just released. - G965USQU9AUA1. I don't know what version Android it's on, but it has an upgraded bootloader so it should be able to be used along with my previous instructions. I'll give it a try later today and let you know how it turns out.
 
I misremembered - the phone WAS on Android 10, Bootloader V8 and I was able to downgrade to Android 8.0 with the same bootloader version. Original post edited.

I just looked, and it appears as though there's a new combination firmware that was just released. - G965USQU9AUA1. I don't know what version Android it's on, but it has an upgraded bootloader so it should be able to be used along with my previous instructions. I'll give it a try later today and let you know how it turns out.
Is it possible to edit the partitions so much so that it were as though you just flashed a given custom rom with a different android version?
 

gpz1100

Senior Member
Nov 28, 2009
3,062
581
^^Anytime root was applied, it would fail after flashing on the later versions of 10. It would seem there's code that checks for partition modified and if detected, fail to boot.
 

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  • 22
    This method is brought to you entirely by @elliwigy He is the reason for this exploit and method.
    With that being said, Extreme Syndicate Root is now available!


    Disclaimer:

    The Extreme Syndicate team and it's affiliates are not responsible for your actions or your device if any issues are to arise. You flash this and utilize these files at your own risk. You have been warned!


    The Adventure!:

    I will not get into any technical details here. Just know that this method has taken me ~1 year from start to finish. I also went through a number of devices during this time (at least 7 devices), even sold my original N9 then somehow ended up with another one before this root method was found. Some of us devs might be a bit burnt out so don't get upset if we are not in here all day every day answering everyones questions. We hope users will help eachother, that is what XDA is all about! Also, if you want more real time conversation/support then please join our Telegram group (link posted below) as this is easier for us to moderate and allows discussion to be had in real time. I don't always check XDA messages or PM's as it can be a lot and very tiresome so your best bet is Telegram!

    Also, donations/money is not expected or required but if you feel obliged to share what you can then that would be greatly appreciated! Donations keep me on the grind and sometimes can even help me in acquiring other devices to work on. I had issues with Paypal a while back (SamPWND days) and do not have a Paypal account. I do however have a Venmo and Transferwise accounts that work in most situations.

    Venmo - http://www.venmo.com/Thomas-Huntington-10

    Transferwise - PM @elliwigy for info to donate using Transferwise.


    Now Let's get into the files/method!

    Notes:
    - This does NOT trip KNOX so don't ask.
    - Bootloader is of course still locked.
    - This uses some partitions from combo firmware which means 80% battery.
    - Each variant will have its own post in its own section. N9 in N9 section, S9 in S9 section, S9+ in S9+ section.. Make sure youre in the right one!
    * Variants this should work on are: N960U/U1/W, G965U/U1/W, G960U/U1/W. If you do not have one of these variants then this forum is not for you!
    - Initial files/method will leave you on Oreo stock root.
    * Some users were successful in running Pie GSI but the initial posts will not include this. Others will do this and maybe down the road threads will be updated.
    - It works on latest rev's from rev1 up to the most recent revs.
    - As of the initial first release, all variants have an issue with MTP not working, we are working on it however.
    - S9 and S9+ also might have some issues with the selfie cam. Also being looked into.
    - There will be 3 threads created as this method works on 3 different variants. These groups will be facilitated by the following:
    - Note 9 @elliwigy
    - S9+ @klabit87
    - S9 @jrkruse
    - Telegram Support Group for All 3: https://t.me/joinchat/DxwvAlhtzHjg4EI9973BGQ


    INSTRUCTIONS:

    1. Downloads: https://www.androidfilehost.com/?fid=4349826312261714687

    2. In odin folder flash the combo firmware

    3. Once combo is booted up run the root bat. When done phone will reboot to download.

    4. In odin flash the bootswap.tar.md5 file. What this does is swaps the boot and recovery images which allows system to be mounted rw.

    5. Now when done flashing you need to hold the buttons to boot to recovery but since we swapped boot and recovery images it will boot system.

    6. Now put your phone in airplane mode. This must be done whenever using Flashfire. Copy the system.img, vendor.img, and ODM zip files to your phone.

    7. In Flashfire, choose zip and select the odm zip. Make sure you select the option to mount system. Then choose firmware and choose the system.img and the vendor.img. Then choose data wipe and wipe user and system data (the default choices). Make sure inject super su is NOT enabled. Disable it. Do not let flashfire inject root!!

    8.. Now click flash. When finished you will have to hold buttons to reboot to recovery until you see boot animation. You must do this on every reboot. If you do not it will reboot to stock recovery. If it reboots to stock recovery just reboot system and hold buttons to reboot to recovery again.

    9. When rom is booted up your computer will not recognize the phone for mtp file transfer. Adb does still work so you can transfer stuff that way (you need to switch to ptp transfer method in the dropdown) or use USB adapter and use a thumb drive.

    10. Biometrics do not work so don’t try to setup fingerprint or face recognition.

    Some GSI may work. YMMV


    ShoutOuts:

    @jrkruse - Helping me over the years and for all his contributions.
    @klabit87 - Ditto
    @me2151 - Ditto
    @gsm-CHEN - Ditto
    @mweinbach - For always posting my achievements on the XDA News portal as well as giving me someone to troll sometimes when bored.
    @ShaDisNX255 - He was our best tester, give him credits for testing out GSI as well!
    @everyone else I am forgetting!


    ENJOY!
    3
    Guys I posted a link up for my s8 battery fix for 80% of any one rooted wants to try

    ---------- Post added at 02:21 PM ---------- Previous post was at 02:21 PM ----------

    yea.
    im surprised samsung is that sad when it comes to these vulns lol.. even sadder it took me so long before finding it..

    hell i even gave up and sold my n9 before getting anpther then it happened within the day practically lol.. was prolly burnt out after a year and missed the obvious

    That's funny

    ---------- Post added at 02:45 PM ---------- Previous post was at 02:21 PM ----------

    To some people, phones are like crack... but instead of smoking it, gotta crack it, not literally but the software. ;)

    On a different note, have you noticed how XDA has been more quiet lately than usual... not sure what's up with that. Hmm...

    Just here in sammy. All the good devices with unlockable bootloaders are hot hot hot ???
    3
    There's likely not going to be a fix for those restrictions (it's the signed kernel which is the key to this exploit), so instead of waiting you're better off getting the G965F version with unlocked bootloader, custom recovery, and no restrictions.

    By the way, the flipping of the boot with recovery is brilliant! ;)

    yea.
    im surprised samsung is that sad when it comes to these vulns lol.. even sadder it took me so long before finding it..

    hell i even gave up and sold my n9 before getting anpther then it happened within the day practically lol.. was prolly burnt out after a year and missed the obvious