yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Tab S8] Chaser42:
So I either have the right kernel version or it only says that because I've got your patch applied...

Ch42er
[Samsung Galaxy Tab S8] HARNATH:
What custom kernel are you talking about?

Is it the stock kernel modified to be permissive or something else.

Can you change CPU and GPU frequency, with FKM after this as you are rooted with custom kernel?

I want to root my s8+ to lock cpu and gpu frequency, so that stupid samsung and gos do not randomly and uselessly throttle this device. How can I do that? Do I need to root necessarily or is there another option without root and custom kernel.

Thanks in advance.
[Samsung Galaxy Tab S8] afaneh92:
Stock permissive and what you do with root is your concern.
[Samsung Galaxy Tab S8] JohnTheFarm3r:
You can't LOCK the GPU or CPU if the SOC if it's throttling. The cooling design in S8 lineup is actually non-existent, and the SOC temps hit 90C + very fast under high load (gaming, etc...) so the SOC will throttle, no matter what you do to prevent itself from damage (overheating).
[Samsung Galaxy Tab S8] SAMS122:
Just to make sure...

Will the latest TWRP build allow saving backups to an external SD card?

Also...

There is a Russian site which offers some kind of "lineageos"? versions for S8 Ultra.

Too good to be true? Any thoughts on this...

{Mod edit: Link removed}
[Samsung Galaxy Tab S8] afaneh92:
Yes

And I think its GSI, you can check that
[Samsung Galaxy Tab S8] SAMS122:
Thanks afaneh92, I'll keep my fingers crossed and try it!
[Samsung Galaxy Tab S8] gts8er:
Hello Afaneh92, loving the work.

In the original post you made with the instructions, the vbmeta image linked is for android 11. The Galaxy S8 wifi (gts8xxwifi) that I had purchased came with android 12.

My question is, would you happen to have a vbmeta_disabled_S.tar available?

Or perhaps you can point me in the right direction on how to create a disabled vbmeta image.

PS:

I do not have a windows machine.

Thank you for your time
[Samsung Galaxy Tab S8] JohnTheFarm3r:
You can use the provided Vbmeta, it works fine.
[Samsung Galaxy Tab S8] Oswald Boelcke:
@SAMS122 I've removed the link from your above post.

Reference: XDA Forum Rules (excerpt)

Please refrain from sharing such links in future. Thanks for your cooperation.

Regards

Oswald Boelcke

Senior Moderator
[Samsung Galaxy Tab S8] Oswald Boelcke:
Please refrain from attempts to highjack this development thread with posts not related to the development of THIS TWRP. I'm convinced you'll find suitable threads to discuss your generic topics unless you like to create an own one. Please contact me privately in case of further questions but do NOT reply to my post. Thanks for your cooperation.

I've removed all posts that were triggered by your post. Additionally, I'v subscribed to this thread.

Regards

Oswald Boelcke

Senior Moderator
[Samsung Galaxy Tab S8] SerdarAD:
Hello!It doesn't work on TabS8 5g, yes?
[Samsung Galaxy Tab S8] roirraW "edor" ehT:
Is your model number one of these:
[Samsung Galaxy Tab S8] jhill110:
Thank you so very much for the recovery. I went 2 years without TWRP for my Tab S7 it's very good to have it for my new Tab S8 +.

Thanks again.
[Samsung Galaxy Tab S8] Techguy777:
I ordered a S8 plus from Samsung it'll be here this week. I notice that the kernel is for the S22 I'm assuming it works for the tab S8 also

Do I have to be on a certain firmware with a certain security patch?

I have the Tab S6 and you cant flash last firmware's kernel on the new update if there is an update.

If I do need a certain firmware and security patch what one?

any help would be greatly apricated, I can't wait to get this rooted and setup thanks for making twrp and the kernel

afaneh92​

You definitely do a lot of devices I cant image the amount of storage required. When I built android 9 for a few devices it took like a 100gb or something. Twrp was like 50 to 75 I believe I cant remember though.
[Samsung Galaxy Tab S8] jhill110:
I received my S8 + on the second of Nov. Updated to the latest firmware rooted and installed TWRP and this kernel same day and all is well.

No worries.
[Samsung Galaxy Tab S8] afaneh92:
its ok, use latest kernel and twrp
[Samsung Galaxy Tab S8] Techguy777:
One ui 5.0 is dropping for 5G Europe models. So it should be right around the corner for everyone. All models tab s8, s8+, and ultra

SM-X806B _ EUX and EUY
[Samsung Galaxy Tab S8] Techguy777:
Kernel works perfectly and twrp seems to be working great to so again Thank You for your work.

Just a quick question have any of you been able to get viper4android to work on this device or any other one ui 4.1.1 that are new like this year?

Normally I can get viper working without a problem but it doesnt matter what I install jamesdsp 4.6 wont work either and normally you install them together.

If yes then how?
[Samsung Galaxy Tab S8] Techguy777:
I see zips on telegram for rw. Do they work on the tab S8 can I make my system rw?

I would love to be able to make system rw. there's shealth_fix_1.0 and rw tool .3 what do they do and how do I use them?
[Samsung Galaxy Tab S8] afaneh92:
Yes you can flash them in twrp, one make system rw and othe fix shealth as name says
[Samsung Galaxy Tab S8] Techguy777:
I got an error like the guy on telegram did.

How do I fix it? Wont it make it the same size again if I flash stock firmware?

You seem very knowledgeable when one ui 5.0 drops for WIFI is twrp, kernel, and root the same or do you have to update it?

I figure the vb meta file is the same

Thanks for the help
[Samsung Galaxy Tab S8] afaneh92:
Im working on new twrp build, will fix the size and make it work without custom kernel. Need some time for debugging.
[Samsung Galaxy Tab S8] Techguy777:
Awesome! If one ui 5 does come out before you finish can I just patch the AP file from firmware to root?
[Samsung Galaxy Tab S8] Techguy777:
I don't know if I understand your directions.

Might need to reflash stock firmware to decrease vendor size if you are coming from twrp build 3 or older

Flash this tool on fresh firmware before runnung multidisabler to resize vendor (Build 3 or older)

then run multidisabler and format data

reboot to recovery and flash the tool again to resize system

on Build 4 (from androidfilehost) after running multidisabler, format reboot to twrp then flash zip

Heres what I think your saying

I would need to flash stock firmware again

before then flash twrp after setting up google acount

flash rw zip

then do

- Go to Advanced > Terminal, type: multidisabler.

If vendor complain about free space left on device, will attempt to resize vendor. and it ask to - Run multidisabler again!.

- Type: multidisabler again. will see - Finished. when done.

- Go back to Wipe > Format Data > type yes.

- Reboot to recovery.

7. Flash custom kernel and magisk apk in twrp.

8. Reboot to system, Enjoy.

If thats right I dont understand why running multidisabler before flashing rw makes system to big and how it works if flashing before multidisabler makes system size doable.

Just a yes or no if im correct is all I need

Also after flashing twrp I turn off auto reboot and hold volume down and power, when screen goes black I switch to volume up. The instructions don't say to do that. Do you not have to anymore?

can I just hold power and volume up plugged in?

feel free to comment anyone any input is welcome
[Samsung Galaxy Tab S8] jhill110:
I'd like to know the answer to this question also.
[Samsung Galaxy Tab S8] Techguy777:
The answer is Yes but if you flash it right now it doesn't because the system is to big I guess. Thats why you have to flash firmware and flash zip but before i go that route I would like to make sure I'm understanding correctly.
[Samsung Galaxy Tab S8] jhill110:
What is shealth fix?
[Samsung Galaxy Tab S8] Techguy777:
I said the same thing at 1st then it dawned on me at Samsung health app I believe
[Samsung Galaxy Tab S8] afaneh92:
As I said it need new twrp with size fix, just wait
[Samsung Galaxy Tab S8] Techguy777:
Gotcha will wait
[Samsung Galaxy Tab S8] Techguy777:
Do you think its possible that viper4android will work once system is RW?

Usually a permissive kernel is all you need even with Samsung. I suspect the system isn't reading the files.
[Samsung Galaxy Tab S8] afaneh92:
V4A is a trojan so he wanted to be in system to take full control
[Samsung Galaxy Tab S8] Techguy777:
Lol what? Im not worried about it I have no bank accounts or money tied to my phone. My Google name is papasmurf. There's 0 tied to my life
[Samsung Galaxy Tab S8] jhill110:
Ohhhhh... 😆
[Samsung Galaxy Tab S8] Techguy777:
I was looking at it like it was 1 word shealth and some type of zip meant to do something different. If you have a samsung phone it makes sense but I dont see why people would use it on a tablet.
[Samsung Galaxy Tab S8] Techguy777:
Twrp works perfectly yesterday I got into a weird bootloop and I couldn't fix the problem by deleting magisk modules that I believe caused it. I restored the system, data, boot in 3 minutes and 30 seconds of 27GBs unreal fast. I have learned to use internal storage for a backup and apps and move files to Ext SD card. That way you can restore superfast.

So again thank you I'm very thankful once I actually use a piece of software. I was under the impression google was going to make everyone have to use A/B slots and every other change they made over the years. Just like Treble. Im so thankful they didn't. At first every time I screwed up my poco f3 I was forced to flash the rom zip over.

Can debloating the rom make it bootloop because its RO? I uninstalled a couple of apps with fdroid systemless debloater and it worked at first.
[Samsung Galaxy Tab S8] Techguy777:
Android 13 is now out for the plus wifi models. Does anyone know if its rootable by patching AP with magisk or TWRP and kernel on telegram thats supposed to be android 12 and 13? Maybe you guys have a s22 ultra and have already done it. Thanks

EUY and EUX you used to be able to flash different regions fine

PDA Version X800XXU2BVK4

CSC Version X800OXM2BVK4
[Samsung Galaxy Tab S8] old_fart:
.

I would like to ( very much ! ) want to know this also.

Android 13 was out and done for the Tab S8 ten days ago.

Yesterday I grabbed off of Samfrew dot com, this seven gig file.

KOO-X906NKOU2CVK5-20221123144737.zip

I am going to rustle up my flagging gumption and load it with odin...
[Samsung Galaxy Tab S8] Techguy777:
I have been watching the S8/S22 telegram as well and I am a little confused now. Because normally you patch the AP you extracted from the firmware with magisk and flash that with odin and your rooted. However I see people talking about patching the boot img and the vbmeta and flashing that for root. I have never seen a guide that showed to just patch boot and vbmeta although I have never looked either. Im patiently waiting for this developer to finish twrp for a13. I prefer to root it that way for a few reasons. If you flash a magisk module or lsposed module and you bootloop because Android 13 just came out so bugs will happen. How do you fix that without recovery? You would have to flash stock and do everything over again. With twrp I make backup and if I cant uninstall module, I restore backup.

Yes you can root android 13 oneui I heard on the s8 ultra use magisk canary instead of stable.

how to root it exactly I don't know at the moment what method to use.
[Samsung Galaxy Tab S8] old_fart:
.

Loading 13 with odin was very straight-forward. Is done. I used HOME_CSC versus the CSC file to not factory reset and retain my settings... The discovery doc file says that I am Smarter and More Powerful now. Well, I seriously doubt that. I just re-ran Geekbench 5 and it says : 1173 and 3131, so those numbers are slightly less than with 12. I wonder how much new bloatware is running in the background stealing the limited, available clock cycles ?

.

Time to grab Magisk next.

Geekbench ML is 466. An 'no', you do not patch vbmeta but rather ( stock file next to boot image ) is re-written to toggle verity and verification to disabled . . .

Oh. Oh. I did read the act of re-writing the vbmeta file is a mandatory factory reset. Boo...

Disabling that vbmeta means you cannot buy girl scout cookies with your credit card using the tablet. No walking up to the Starbucks register and bonking your tablet on the swiper to pay for your morning cup of joe.

I re-read your post and saw where you say 'patch to AP' and that is not correct. You pull the itty bitty boot image file from the AP and patch that with Magisk. Hope everyone is safe and having a nice turkey day.
[Samsung Galaxy Tab S8] Techguy777:
When I said patch vbmeta I meant installing the vbmeta dummy disabled file on the opening page. Yes that means factory reset is mandatory.

The part im not understanding is the bootimg how do you get just the boot img?

Are you using the kernel from this or telegram thread to patch in magisk?

What slot does bootimg go into with odin?

I would like to see a guide with this method if you know one please let me know?
[Samsung Galaxy Tab S8] old_fart:
Watch Anthony's youtube video to clear up some confusion. This worked fine on my older tablet.
[Samsung Galaxy Tab S8] Techguy777:
Thanks for that video now im all caught up. I didn't know you could do just the boot.img on samsung. Its nice to have a video to follow along with. I always ask and no one ever says anything. They act like same way its always been but then come to find out its not the same way. I still prefer TWRP, Kernel, and flash magisk. That way you have a recovery to stop bootloops.
[Samsung Galaxy Tab S8] old_fart:
I agree it is a big mess when different information comes from different places. What's a poor boy supposed to do ?

Is it because different instructions are tied to the older Exynos chip . . . then the newest Snapdragon chip ( like in the ultra ) have a totally different way of doing things ? Does this mangle up @afaneh92 and his work ?

The twrp mothership keeps loudly beating the mantra, 'must disable dm-verity in the fstab' or you're guaranteed a boot looping brick... . . . . Huh ?

So Magisk ( thankfully ! ! ! ) gives us root. Magisk comes first and not last like the old way. Then we're still missing a step or two to make twrp happy ? ? ?

Like in the newer pixel phones, they have to 'fastboot flash vbmeta vbmeta.img --disable-verity' to have custom kernels. What about recovery there ? The pixels have 'NO' recovery. Waa waa waa . . .

Update Saturday night:

Received a 'data-only' sim from google fi. My hope was that the internal tablet radios would give me 5G speed data ! Nope. Got LTE 4G, band 41. Carried the plastic slab out to the quiet street and turned 'on' the cell tester app. It said I had -94 dbM of signal strength. That is not a great level and then also not a bad level.
[Samsung Galaxy Tab S8] Techguy777:
Im curious about a couple things. When you guys reboot to recovery after flashing with odin does it make you feel like your tablet is broken when it goes black for about 25 seconds or so?

It does that even with stock recovery but its nuts the first time it happened I thought what the hell.

My next question is have anyone use the twrp and kernel on one ui 5?
[Samsung Galaxy Tab S8] jhill110:
Yeah, I thought something had gone wrong. I'm not a patient man but I have learned to be when it comes to this stuff.

Back in the Note 4 days when I started doing this, wait, wait, wait most of the time would pay off.

I miss those days. We had a guy that was a GREAT developer of roms for the device. @tx_dbs_tx a was a mad scientist.
[Samsung Galaxy Tab S8] Techguy777:
This developer is well seasoned for sure. I don't consider everyone who complies a rom a developer because their not. I made 3 custom roms back in android 8 and 9. You just follow guides and people will tell people their developers and it goes right to there head. However this guy for the tab s8 is someone who I say is a developer. He has been building for like 10 years or more if you go through is android file host. He can actually figure out problems to and thats key.

Just so everyone knows Im on android 13 one ui 5.0. I flashed twrp 3.6.2 and the custom kernel the latest one and did everything like before it works perfectly on one ui 5. I know I like to hear from other people things worked.
[Samsung Galaxy Tab S8] jhill110:
Very glad to hear that. I was going to hold off on 13 to let any bugs get worked out but I guess it's ok.

What do you think of 13 and one ui 5?

Did you upgrade with odin and home csc?
[Samsung Galaxy Tab S8] Techguy777:
Yes I used odin but I have apps backed up with swiftback up and I have only had my tablet like 10 days so I just used csc and played it safe. If you are unencrypted and you boot from odin back into odin and flash twrp and root and kernel you could update without ever missing a beat. But if you don't boot into recovery and Miss the timing you will be forced to do it all from scratch again because your internal storage will try to encrypt. I've had that happen on my Poco f3. Android 13 seems better if you link your tablet to messages from your phone. I did use the xar csc because it came out yesterday
[Samsung Galaxy Tab S8] Techguy777:
So far my favorite feature is the enhanced text extractor. I have Android 12 with the pixel launcher on my Poco and I love this select text option in the recent menu Samsung's is a little bit more complicated. But now you can do it right from gallery from the picture itself you don't have to load up bixby. I think that feature and the new Pixel 6 voice typing of the two best features that Android's got and probably the last 7 years. I have the pixel 6 voice typing on my Poco f3 they ported it by making my phone say it's a Pixel 6. It's amazing you can type out whole paragraphs with the microphone and it reads 95% accurate of what you're actually saying that is an awesome feature
[Samsung Galaxy Tab S8] old_fart:
Saw the OP got updated yesterday. Inspected the recovery image and was 'surprised' to see the version is no longer twrp-3.6.2_12-4_afaneh92-gts8u but updated to twrp-3.7.0_12-1_afaneh92-gts8u

Wow so then possibly @afaneh92 ( the code master ) will tell us shortly and I am jumping the gun by mentioning it . . .
[Samsung Galaxy Tab S8] afaneh92:
As you can see in the changelog which is my github repo, Yes you can now reserve more space for system
[Samsung Galaxy Tab S8] Techguy777:
Rw system file is on telegram if anyone is interested. Along with twrp 3.7
[Samsung Galaxy Tab S8] afaneh92:
Worked for you?
[Samsung Galaxy Tab S8] Techguy777:
no I didn't get it to work
[Samsung Galaxy Tab S8] Techguy777:
the latest twrp 3.7 works like a charm thank you
[Samsung Galaxy Tab S8] usnbrendon:
Thanks... I was kinda wondering how much further things would devolve before a forum moderator chimed in with a friendly reminder. I almost stopped researching this topic..was literally about to just close the thread & delete the bookmark until your post scrolled into view.
[Samsung Galaxy Tab S8] usnbrendon:
Purchase direct from Samsung but be forewarned the USA 5G variants will all have Snapdragon chipsets and thus UNLOCKABLE BOOTLOADERS. The way I circumvented the bootloader issue is by pre-ordering the SM-X900 (GTS8Ultra Wi-Fi only) and trading in my Tab S6 LTE on T-mobile... giving up mobile data sucked a bit at first, but the ease of using my galaxy S22 ultra as a wifi Hotspot for it makes up for the lack of 5GUC.

Otherwise, you might find someone selling an Exynos based Tab S8 with 5G in Europe or Asia but beware that the radio basebands /specific freqs & bandwidths may not be fully compatible or supported reliably by U.S. cellular carriers..... So do your homework thoroughly prior to letting someone try to sell you a whopping bill of goods you couldn't use rooted or not!

Cheers.
[Samsung Galaxy Tab S8] Techguy777:
There are no exynos version's of the Tab S8 and actually if I bought the south Korean ultra 5g off amazon I could have done that and had an unlockable bootloader with 5G.
[Samsung Galaxy Tab S8] mslayer27:
i did this and now my tab s8 boots into twrp, but its stuck there all the buttons work, i just when i try to reboot it reboots to twrp again. need help getting back to working?? im probably gonna have to delete everything again aren't i :((
[Samsung Galaxy Tab S8] Techguy777:
Off the top of my head I will say yes because I have never heard of anyone who kept booting back into recovery. So I would have the firmware at hand because I always download first. While holding volume up and volume down plug usb c into pc and tabler. While its trying to reboot.

You can give more details to what you did. Did you unlock bootloader? these types of things. Worst case you have to flash stock firmware and you don't break your brand new 1000 dollar tablet for good. data can always be redownloaded.

You dont even say if twrp works or sees your system or anything
[Samsung Galaxy Tab S8] mslayer27:
i was already rooted via magisk, then i went ahead and flashed the twrp.tar file to it via the AP slot on odin while in download mode. really hoping i can recover, again all i can do is boot into recvovery or download mode
[Samsung Galaxy Tab S8] Techguy777:
Yes I know a miracle fix without a factory reset is all anyone wants. When they pray to god at night thats it cure for cancer not so much.

So because you have still left no details im going to play the assuming game. You rooted by patching the AP file Right?

That means it was still encrypted when you flash twrp you also have to flash the kernel and format the data. Because the tablets still encrypted. You said you just flash twrp. My thought is it has be done the correct way if you add twrp you had to also flash kernel and format data.
[Samsung Galaxy Tab S8] mslayer27:
im reflashing the original firmware using Odin. sucks, i really didnt feel like redownloading all my apps and accounts today, idk why i had to put it on my tablet
[Samsung Galaxy Tab S8] Techguy777:
Just to beat you to I dont know a fix. I dont think there is one you will have to flash stock firmware and start over. You can try telegram and see what the developer says but I dont know
[Samsung Galaxy Tab S8] Techguy777:
I was right wasnt I ? You flashed twrp and not the kernel and rooted the AP?
[Samsung Galaxy Tab S8] anastasiszn:
Hello,

i have the galaxy Tab plus.

But when i download the kernel i find it only for Galaxy Tab S8 Ultra.

Is it the same ?
[Samsung Galaxy Tab S8] anastasiszn:
Do we found a solution for the rw ?

I cant delete any system file :(
[Samsung Galaxy Tab S8] afaneh92:
Yes
[Samsung Galaxy Tab S8] afaneh92:
Currently, I don't have a real tester to fix rw on TabS8
[Samsung Galaxy Tab S8] anastasiszn:
I can test for you bro.
[Samsung Galaxy Tab S8] anastasiszn:
and my second question is.

Can you help me to boot on charge ?
[Samsung Galaxy Tab S8] Chaser42:
Has anyone successfully upgraded to the Android 13 firmware without a factory reset?

I have an S8 and an S8 Ultra. The S8 has essentially become my primary computer as I use it for everything. I use the S8 Ultra as a toy and for testing. These devices were successfully rooted with TWRP recovery on the Android 12 firmware (data partition unencrypted).

The S8 Ultra was my test victim. I successfully got Android 13 running rooted with TWRP. However, my data partition got wiped. I do have a TWRP backup so hopefully I will be able to restore that. Oh well, I enjoy tinkering with my electronics so it's not a big deal.

But there would be quite a bit of pain if I had to do the same thing with the S8.

I usually have a lot of success with this stuff but evidently I messed something up. Please let me know if you have any ideas about what I did wrong. Here are the basic steps that I took:

1) Flashed BL, AP, and HOME_CSC for the new firmware. The AP partition was pre-patched with Magisk.

2) I then flashed TWRP along with the VB meta disabler.

3) I booted into TWRP and ran the multidisabler script.

3) At this point I was in a boot loop, so I wiped the meta partition as is recommended.

4) Tablet booted fine, but evidently got wiped because it was a brand new setup screen.

Hopefully I will be able to restore that TWRP backup of the unencrypted data partition. I will let you guys know how that works out.

Ch42er