How To Guide Root Guide for Galaxy Tab S8/S8+/S8Ultra

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Does anyone know if Samsung will accept rooted devices for trade-in? I want to root my s8 ultra but I want to be sure I can still trade it in at some point.
I am not certain but I doubt they will accept it at the full trade-in price, especially considering root trips their KNOX fuse which cannot be reset by any means that we know of. I'd assume that means they need to replace the mainbaord or at the bare minimum that KNOX chip.
 

HARNATH

Member
Jun 22, 2019
27
1
Fantastic job with this guide, everything was clear. Quick word about the Microsoft Redistributables you need the older versions in order to run Frija, I believe that's 2008 and 2010 x86 (not x64).

Upon reboot, I also had to reinstall Magisk from Github.

Otherwise it's all good and everything worked exactly like it was supposed to.

Now time to permanently uninstall some bloat lol

EDIT: Stick to the Samsung Debloat list for safe removables, I went a little "root" crazy uninstalling random things. Now I have to reflash the tablet and start from the beginning LOL
Can you change the GPU and CPU frequencies now that you are rooted with a kernel manager?
 

HARNATH

Member
Jun 22, 2019
27
1
Any custom kernels or anything? Just got my S8+ and it seems pretty unremarkable so far. A bit stuttery and laggy too. You can definitely tell Samsung gimped the the chip and this oneui or whatever doesn't help.

If no kernels can CPU governor at least be set to performance mode? The root process looks like a pain compared to what I'm used to with my OP phones.

Edit: Yes you can. Sort of. Definitely an improvement though.
Did you find anything regarding this?
 

shadowofdeth

Senior Member
Mar 27, 2019
112
27
Did you find anything regarding this?
Nope. Have all CPU cores running in performance mode but it still throttles far too quickly and aggressively. It feels better than stock values but not for long if you are even a little busy with some apps running. I've found an app called "Good Guardians" which lets you raise the throttling threshold a bit but it doesn't do anything as far as I can tell.

This tablet is a joke. First and last Samsung device. Should have known better.
 

HARNATH

Member
Jun 22, 2019
27
1
No idea, I've been doing this for far too long to still be messing with petty things that squeeze out 0.39483% more performance from my device.
It's not abt performance squeeze samsung gos or it's OS keeps capping my cpu and gpu frequency even though it's at 34-35 °C, previously disabling GOS fixed the problem but now even after disabling it's not getting fixed so I m searching for some method to lock my cpu and gpu frequency to a stable level and prevent throttling.

Example my poco f1 with SD845 can get stable 60 fps in games while this tablet struggles to maintain 45-50 fps how t* is this possible!!
 
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HARNATH

Member
Jun 22, 2019
27
1
Nope. Have all CPU cores running in performance mode but it still throttles far too quickly and aggressively. It feels better than stock values but not for long if you are even a little busy with some apps running. I've found an app called "Good Guardians" which lets you raise the throttling threshold a bit but it doesn't do anything as far as I can tell.

This tablet is a joke. First and last Samsung device. Should have known better.
So this good guardian method will require rooting, seems I shd just use it for one year then sell it to get an ipad, rooting will break knox fuse and it's better to keep it's value up.

I was going to get an iPad but got tab s8+ as it seemed better and all reviewers were saying it's performance is good.

Now I am suffering with it's stupid reflective screen (display is great but too reflective and unusable outdoors) and bad performance.
 

shadowofdeth

Senior Member
Mar 27, 2019
112
27
So this good guardian method will require rooting, seems I shd just use it for one year then sell it to get an ipad, rooting will break knox fuse and it's better to keep it's value up.

I was going to get an iPad but got tab s8+ as it seemed better and all reviewers were saying it's performance is good.

Now I am suffering with it's stupid reflective screen (display is great but too reflective and unusable outdoors) and bad performance.
No root needed for the app. It's on the Samsung app store.

You will need root to change CPU governors and GPU clock speeds with a kernel manager. I'm using Elementalx. Doesn't help much though as throttling overrides everything. Seriously, last Samsung device for me. My phone runs so much better.
 

HARNATH

Member
Jun 22, 2019
27
1
No root needed for the app. It's on the Samsung app store.

You will need root to change CPU governors and GPU clock speeds with a kernel manager. I'm using Elementalx. Doesn't help much though as throttling overrides everything. Seriously, last Samsung device for me. My phone runs so much better.
If you use a GSI firmware will it overcome throttling issues since no OneUI anymore, or is throttling inbuilt even deeper? I read that S pen is also working in that but some special s pen feature are absent but they are rarely used.
 

shadowofdeth

Senior Member
Mar 27, 2019
112
27
If you use a GSI firmware will it overcome throttling issues since no OneUI anymore, or is throttling inbuilt even deeper? I read that S pen is also working in that but some special s pen feature are absent but they are rarely used.
Throttles regardless. Qualcomm throttle the 8 gen 1 but then Samsung added their own throttling which kicks in way before it's even necessary. It's honestly a joke what Samsung have done here. If I'd have known I wouldn't have bothered.
 
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shadowofdeth

Senior Member
Mar 27, 2019
112
27
Are there other non Samsung Android tablets that are more perfomant? I won't buy Chinese owned, so those are out.
Don't know as my last tablet was the Nexus 7. Pretty sure this line is the "best" right now for tablets though. Chinese might be worth a look with some good research.

Shouldn't expect any less from Samsung. I won't be buying anything from them again.
 
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roirraW "edor" ehT

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Public confession of an idiot: I didn't pay attention & flashed CSC instead of Home CSC when updating this morning. Guess what I'm doing now???
I did the same thing either the first or second month I updated mine after I rooted it. 🍩 Now I re-read the instructions each month and move the unneeded file(s) to another folder before I start flashing, or even before I re-root the new AP.

Another time my AP file got corrupted during one of the transfers and I had to factory reset after, so I try to remember to check hashes on the AP file before and after in each direction of transfer, plus I use 7-Zip to test the .tar archive, and view its contents before I flash it.
 
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lloydsw

Senior Member
Feb 19, 2012
213
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OnePlus 8T
Samsung Galaxy Tab S8
I did the same thing either the first or second month I updated mine after I rooted it. 🍩 Now I re-read the instructions each month and move the unneeded file(s) to another folder before I start flashing, or even before I re-root the new AP.

Another time my AP file got corrupted during one of the transfers and I had to factory reset after, so I try to remember to check hashes on the AP file before and after in each direction of transfer, plus I use 7-Zip to test the .tar archive, and view its contents before I flash it.
That's a good idea - killing CSC. I had the guide up for a refresher, but between reading & doing I got distracted.
 
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jsm36

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Sep 18, 2018
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Ludwigshafen
It worked very well on my SM-X906B EUX.

But Magisk was NOT pre-installed after rooting. (Step 4).
I downloaded the magisk.apk again, installed it and then I could opten it, open the settings and reboot the device.

I don't use Netflix, maybe I will test Step 5 later.

Thank you very much!
 
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shadowofdeth

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Mar 27, 2019
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Is it okay to factory reset and keep root? This is my first Samsung.

On my phones I can factory reset from settings/recovery and get root again just installing the Magisk manager app.

Same deal for my Tab S8+?
 

TENlll423

Senior Member
I got the S8 ultra and i really like it... I also have a oneplus 9 9 pro rooted..
I really love rooting my devices especially since than i can debloat and do other things.

Well now I have debloated some unwanted stuff from this tablet using ADB & Fastboot for Android NDK on my OP 9Pro..
So now im thinking that rooting isnt really going to be all that...
What other cool stuff are you all doing with your s8 ultra after rooting?
 
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jhill110

Senior Member
Oct 12, 2012
1,907
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Samsung Galaxy Tab S8
I got the S8 ultra and i really like it... I also have a oneplus 9 9 pro rooted..
I really love rooting my devices especially since than i can debloat and do other things.

Well now I have debloated some unwanted stuff from this tablet using ADB & Fastboot for Android NDK on my OP 9Pro..
So now im thinking that rooting isnt really going to be all that...
What other cool stuff are you all doing with your s8 ultra after rooting?
I've found over the many years (note 4) with Samsung devices that ability to freeze apps with TiBu (debloatIng) is a huge +. I have gone to rooting for that reason almost alone. Plus now I have some apps that require root I can't do without.
Don't worry about trading in your device with Samsung after unlocking the bootloader just relock it and send it in. Been doing this since Tab s2 with no problem. I sent tab s7 back for the Tab s8 plus (had bootloader unlocked and rooted) and Samsung has never said a word... Makes me think they Easley have a way of fixing the knox blown efuse thing.
Anyway, I always root my tablets. Why would they make it possible (unlike their Snapdragon phones) to do so if they cared?
Just my 2 cents.
 

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  • 5
    I got the S8 ultra and i really like it... I also have a oneplus 9 9 pro rooted..
    I really love rooting my devices especially since than i can debloat and do other things.

    Well now I have debloated some unwanted stuff from this tablet using ADB & Fastboot for Android NDK on my OP 9Pro..
    So now im thinking that rooting isnt really going to be all that...
    What other cool stuff are you all doing with your s8 ultra after rooting?
    I've found over the many years (note 4) with Samsung devices that ability to freeze apps with TiBu (debloatIng) is a huge +. I have gone to rooting for that reason almost alone. Plus now I have some apps that require root I can't do without.
    Don't worry about trading in your device with Samsung after unlocking the bootloader just relock it and send it in. Been doing this since Tab s2 with no problem. I sent tab s7 back for the Tab s8 plus (had bootloader unlocked and rooted) and Samsung has never said a word... Makes me think they Easley have a way of fixing the knox blown efuse thing.
    Anyway, I always root my tablets. Why would they make it possible (unlike their Snapdragon phones) to do so if they cared?
    Just my 2 cents.
    2
    I've found over the many years (note 4) with Samsung devices that ability to freeze apps with TiBu (debloatIng) is a huge +. I have gone to rooting for that reason almost alone. Plus now I have some apps that require root I can't do without.
    Don't worry about trading in your device with Samsung after unlocking the bootloader just relock it and send it in. Been doing this since Tab s2 with no problem. I sent tab s7 back for the Tab s8 plus (had bootloader unlocked and rooted) and Samsung has never said a word... Makes me think they Easley have a way of fixing the knox blown efuse thing.
    Anyway, I always root my tablets. Why would they make it possible (unlike their Snapdragon phones) to do so if they cared?
    Just my 2 cents.
    Right on. Thats why i love my OP9Pro. It is easy as hell to root and still use everything as if it wasnt like widevine L1, Banking Apps ,google pay or Wallet. i like font manager, adaway and etc mods. SD Maid is my fav for freezing apps and keeping track of whats all running..

    I am super new to samsung and I'm really diving in and wanting to learn about it...
    so whats the issue with Knox after rooting?

    My xbox one controller with this tab ultra is decent too.
    i have So much fun with it at work when im waiting inbetween loads..Asphault 9, CODM, GRID Autosport, and Modern combat is fun...
    Try those games you al w/ the controller, you might like it a lot as well....
    2
    I am super new to samsung and I'm really diving in and wanting to learn about it...
    so whats the issue with Knox after rooting?
    Once you unlock the bootloader of a Samsung device, it permanently trips their "Knox" e-fuse. There is no way to undo it. That makes it, so you can never use Samsung Pay and maybe some other Samsung-specific features. Also, if you return it under warranty, they can see that Knox was tripped and can potentially not honor the warranty, although there are laws against that, but that doesn't always stop them.
    2
    Thanks for the info and yeah I've been reading up on it...
    As of now I'm going to hold off on rooting this tablet.
    With me being able to debloat using my OnePlus 9 pro w/ adb and fastboot NDK I'm good with that..
    I just got rid of digital well-being which is great.
    I hate that overly intrusive app... LOL...
    also if there is any apps or services I shouldn't get rid of if any of y'ou all could let me know on a PM or on here I'd appreciate it..
    I'm thinking about getting rid of that Bixby stuff but I'm going to read up on it more... Thanks
    I'm pretty sure there's already a thread in this section for that. Try any of the following Quick Filters at the top of the list of threads in this section - it should be one of them:
    • How To Guide
    • General
    • Thems / Apps / Mods
    Nevermind, you already found it.
    2
    Hello, Sorry guys if this a repeated question.
    I wanted to buy S8 Wifi version (that only I can afford). But I also very likely to have root on all my device. I read there's a e-fuse and Knox thing, I don't have any experience with Samsung before. So I doing this research,

    1. After i unlocked the bootloader which is the first step to gain root, is the e-fuse will be broke ?
    2. Which apps that will be not working? (I dex affected?)
    3. Is any hardware related will be not working or degrading in quality ? Such as camera will be noisy (like Sony)

    You guys are expert and might have more experience, please please tell me details about it . I didn't get satisfaction on Google search regarding my question.
    1. Yes.
    2. Knox, secure folder, samsung pass and some third party apps which not allowing unlocked bootloader unlock.
    3. No.
  • 16

    How to Root (or update an already-rooted device)​

    Prereqs​

    1. Install the USB driver from https://developer.samsung.com/android-usb-driver
    2. Get the latest Odin from https://odindownloader.com/category/download and unzip it
    3. Get the latest Frija from https://github.com/SlackingVeteran/frija/releases and unzip it
    4. Start Frija and begin downloading the latest firmware for your Model and CSC:
      S8UltraRoot1.png
      1. Model Numbers
        • S8 Ultra 5G: SM-X906
        • S8 Ultra Wifi: SM-X900
        • S8+ 5G: SM-X806
        • S8+ Wifi: SM-X800
        • S8 5G: SM-X706
        • S8 Wifi: SM-X700
      2. CSC: Settings > About Tablet > Software Information > Service provider software version

    Step 1 - Prepare your Tablet (only necessary for first install on unrooted device)​

    1. While Frija is downloading the firmware, prepare your device by doing the following:
    2. Settings > About Tablet > Software Information > Click Build Number 7 times quickly
    3. Developer Options (just below About Tablet on the left column)
      • Turn on USB Debugging
      • Turn on OEM unlocking
        • NOTE: If the OEM Unlocking option doesn't appear, connect the device to the internet, wait a few minutes, then try again
    4. Power tablet completely off (Hold volume down + power button if you haven't changed the Bixby settings)
    5. While holding volume up and volume down, plug the tablet into your PC via USB
      • Let go of volume keys as soon as the blue-green screen shows up
    6. Press and hold volume up for 5 seconds, the screen will change to a confirmation prompt
    7. Press volume up again to confirm, the tablet will reboot
    8. Unplug your tablet from USB
    9. Go through initial setup. Don't bother copying files or installing anything.
    10. Skip signing in to your Google account and Samsung account. You won't be using them for this step.
    11. Settings > About Tablet > Software Information > Click Build Number 7 times quickly
    12. Developer Options (just below About Tablet on the left column)
      • Turn on USB Debugging
    13. Reboot the tablet

    Step 2 - Patch the stock firmware to make it rooted​

    1. Frija should have finished downloading by now, unzip the file (remember where you unzipped it to)
    2. Plug your tablet in to your computer via USB and click Allow if it prompts to allow data access
    3. If this is your first install / you're rooting the tablet for the first time:
      1. Download Magisk-vXX.XX.apk from the topmost release at https://github.com/topjohnwu/Magisk/releases
      2. Copy the Magisk-vXX.XX.apk and the AP_xxx_xxx_tar.md5 from the zip file Frija downloaded to:
        • This PC > Galaxy Tab S8 Ultra > Internal Storage > Download
      3. Open the My Files app on the tablet and browse to Downloads
      4. Click the Magisk-vXX.XX.apk and it will prompt you to click Settings
      5. In Settings, turn on My Files, then it will give you a prompt to Install
      6. When Magisk is done installing, click Open
    4. If your tablet was already rooted, and you're just updating:
      1. Copy the AP_xxx_xxx_tar.md5 from the zip file Frija downloaded to:
        • This PC > Galaxy Tab S8 Ultra > Internal Storage > Download
    5. After the file is done copying, unplug your tablet from USB
    6. In Magisk, click Install in the top Magisk area, then the option for Select and Patch a file
    7. Click My Files > Downloads, select the AP_XXX_XXX.tar.md5 file and click Done at the bottom
    8. Click Lets Go -> After a few moments, it should display this (ignore 'Installation failed' at the top, it always does that):
      S8UltraRoot2.png

    Step 3 - Apply the rooted firmware​

    1. Plug your tablet back in to USB, then on your PC, go back to This PC > Galaxy Tab S8 Ultra > Internal Storage > Download and copy the magisk_patched-xxx.tar file back to the folder where you unzipped the zip file from Frija
    2. After the copy is finished, unplug your tablet from your PC and turn the tablet off
    3. While holding volume up and volume down, plug the tablet into your PC via USB
      • Let go of volume keys as soon as the blue-green screen shows up
    4. Click volume up briefly (don't hold it) to go into download mode
    5. Start Odin and accept the disclaimer prompt.
    6. Click BL and select the BL_XXX_XXX.tar.md5 file where you unzipped the zip file from Frija
    7. Click AP and select the magisk_patched-XXX.tar file
    8. If this is your first install / you're rooting the tablet for the first time (this WILL wipe your data):
      • Click CSC and select the CSC_XXX_XXX.tar.md5
    9. If your tablet was already rooted, and you're just updating (this WILL NOT wipe your data):
      • Click CSC and select the HOME_CSC_XXX_XXX.tar.md5
    10. Odin should now look like this:
      S8UltraRoot3.png
    11. Click Start. When it's finished, Odin will display "PASS!" and the tablet will automatically reboot.

    Step 4 - Verify and finalize​

    1. Go through the normal setup, signing in to your Google and Samsung accounts this time
    2. Click on Magisk that is now pre-installed, and go through the Settings step to allow it to install again
    3. It should prompt you that your device needs additional setup and one more reboot, click OK
    4. After rebooting, your device should be fully rooted. Use a root checker app if you want to verify.

    Step 5 (optional) - Get Netflix (and banking apps etc) working with root​

    1. Install https://github.com/Fox2Code/FoxMagiskModuleManager/releases and run it
    2. Search for Universal Safetynet Fix by kdrag0n and install it
    3. In Magisk settings click Systemless hosts, turn on Zygisk, turn on Enforce Denylist
    4. Click Configure Denylist, then the 3 dot menu and Show System Apps
      1. Search for Google Play Store, click it, check the check and turn on all options underneath
      2. Search for Google Play Services, click it, turn on .gms and .gms.unstable ONLY
      3. Search for Netflix, click it, check the check and turn on all options underneath
      4. (optional) Add your bank / pay app, etc here if you'd like
    5. In Settings > Apps, search for Google Play Services and Google Play Store and clear all data (not just cache) for each
    6. Reboot
      1. NOTE - This is currently only passing Widevine level 3, so Netflix is limited to SD. I'm still trying to figure out how to get L1 / full HD.
    13
    See post #3 for in depth guide !

    ->insert usual general disclaimer of liability

    Required:
    Odin3_v3.14.1 flash tool
    Samsung USB Driver installed
    Frija or something else, to download stock files
    7zip or similar

    1: Unlock bootloader (will wipe your precious data, void warranty, break Knox e-fuse and who knows what else !)
    -unlock dev option (just harass your Build number in settings)
    -be connected to the internet (WiFi or 5g)
    -allow USB debugging
    -OEM unlock
    -be warned that this might cause WWIII
    -Power off your device. Press Volume Up + Volume Down THEN plug your Tablet lnto a PC to boot into download mode.
    -Release buttons immediately when the blue screen shows itself.
    -Long press volume up to unlock the bootloader. This will wipe your data and automatically reboot
    -Go through the initial setup.
    -Skip through all the steps except wifi or 5g
    -sign into your Google or Samsung account
    -Enable Developer options & USB debugging
    -reboot
    -You have an unlock bootloader and have control over your device, (it is unfair that this voids your warranty as you should be able to use your hardware as you please).


    2: Root install:
    -Install Magisk
    -use frija or something else to get the latest file according to your device and your CSC :
    -patch the whole AP file with magisk (transfer of big files can be tricky, using SD card to transfer file from computer to tablet and vice versa seems like one if the easiest way)
    -use odin to flash AP (the patched one), CP, BL and CSC (will wipe once again and reboot)
    -Open magisk to finish install (reboot)
    -You have root

    3: Root update:
    -use Frija or something else to get the latest file according to your device and your CSC :
    -patch the whole AP file with magisk
    -use Odin to flash AP (the patched one), CP, BL and Home_CSC (using CSC will wipe)
    -Press and hold Vol-down and Power let go of all buttons once the screen turn on.
    -You have root, data kept and update


    Please let me know if something should be added or edited.
    5
    I got the S8 ultra and i really like it... I also have a oneplus 9 9 pro rooted..
    I really love rooting my devices especially since than i can debloat and do other things.

    Well now I have debloated some unwanted stuff from this tablet using ADB & Fastboot for Android NDK on my OP 9Pro..
    So now im thinking that rooting isnt really going to be all that...
    What other cool stuff are you all doing with your s8 ultra after rooting?
    I've found over the many years (note 4) with Samsung devices that ability to freeze apps with TiBu (debloatIng) is a huge +. I have gone to rooting for that reason almost alone. Plus now I have some apps that require root I can't do without.
    Don't worry about trading in your device with Samsung after unlocking the bootloader just relock it and send it in. Been doing this since Tab s2 with no problem. I sent tab s7 back for the Tab s8 plus (had bootloader unlocked and rooted) and Samsung has never said a word... Makes me think they Easley have a way of fixing the knox blown efuse thing.
    Anyway, I always root my tablets. Why would they make it possible (unlike their Snapdragon phones) to do so if they cared?
    Just my 2 cents.
    4
    Anyone work out how to get Netflix working with root yet? Also, is Magisk manager showing any modules to download in the Magisk app for you guys? I can install from file, but the downloading functionality doesn't seem to be working.
    Not sure when, but somewhere in an update, the ability to download modules from magisk directly was removed. You can download them using an app called Fox's Magisk Module Manager. You can search for modules just like you could on Magisk, and they'll be added once you install them and reboot. Also, for the netflix thing, your device may not be passing safetynet. Checking this was also remove in an update, but you can check it with YASNAC.

    Edit: I just did this with my rooted Tab S7+, but it should work with the S8+ and S8U as well. Doing this should let you pass safetynet and be able to use Netflix.
    1. Enable Zygisk in Magisk settings, then reboot.
    2. Enable Enforce DenyList in Magisk settings, then go to Configure DenyList.
    3. Enable show system apps with the menu on the top-right, then search "google play services".
    4. Enable DenyList for com.google.android.gms & com.google.android.gms.unstable, then reboot.
    5. Open YASNAC to run safetynet attestation, you should be passing basic integrity but failing cts profile match.
    6. Download and install the latest version of the safetynet fix for zygisk module, then reboot.
    7. Check YASNAC again, you should now be passing basic integrity and cts profile match.
    8. Go to settings > apps, find google play service & google play store, clear data for both of them, reboot.
    9. Go to the play store > settings, play protect certification should now say "device is certified".
    10. Open Magisk > Configure DenyList, search for Netflix (enable show system apps if you need to), enable DenyList for everything, reboot.
    11. Update Netflix if it's not up to date. If the play store is allowing you to update Netflix at all, then you're good to go.

    Now you have Netflix running on your rooted tab!

    Edit 2: Accidentally saved my first edit before I finished the instructions, my bad.
    3
    If I want to update my tab but without root and available ota and without losing existing data. Can I just follow step 3 ? What do I choose as AP ? What do I have to pay attention to ?

    Thanks Guy's
    If you want to update your tab without root, just use the regular Samsung provided over-the-air update.

    If you don't want to root your device, you shouldn't be using SamFirm + Odin, etc. They add extra complexitiy that you don't need if you're not rooting your device.