yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] sssscary:
Hi, I have flashed SR3-SuperSU-v2.79-SR3-20170114223742.zip and aqa4-gtexswifi-SU279sr3.img. Everything seems to be working fine, rooted, etc, except when I reboot or power off, i get stuck on the initial boot screen. It never starts booting. If i go into TWRP recovery and just hit reboot, it boots normally. Anyone have any suggestions of what to the problem is?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] zenful:
Is your firmware build T280XXU0AQA4?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] sssscary:
T280XXU0AQA4, yes that is correct. From sammobile. Thanks for replying.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] sssscary:
I flashed Magisk-v12.0.zip and T280XXU0AQA4-Magisk-v12.0-boot.img and it seemed to fix my problem. I have rebooted at least 8 times, so I think I am good. :good:
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
Won't mount data partition.

I just installed the new German version of Nougat and I have the same problem with it that I had with MM. TWRP won't mount the data partition so I can't flash anything in the download folder or backup to internal storage. It will backup the system and cache partitions to the external SD card but NOT the data partition.

BTW, I've already tried formatting the data partition and doing a factory reset from stock recovery. And I never encrypted the data partition.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ashyx:
Not sure which rom you are referring to as there is neither MM or NN officially available for this device?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
Sorry, this should have been in the thread for the SM-T580 instead of the T280.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] angelus_kun:
im trying to flash TWRP but i get an error "recovery blocked by frp lock"
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] _mone:
From your stock ROM:

Setting > Developer options and activate OEM unlock.

If you don't see "Devoloper options" go to Settings > About device > Software info and tap continuously on top of "Build number", you'll see a message telling that Devoloper options has been activated.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] angelus_kun:
oh yea! i forggot to unlock oem, thanks :D
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] myr1ad:
Hi there, I came across this thread looking for a custom ROM version for the SM-T280...is there any (stable) version available yet?

Thanks in advance !
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Alg0rhyth3m':
So what's going on with Magisk? Saying i need to goto the play store and Magisk manager isnt on the playstore anymore.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ashyx:
It got removed by Google due to violation of terms. Down load it from the Magisk thread.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Alg0rhyth3m':
Well, I did ened u doing that shortly after i made this post, and now im soft bricked. SO i have not one but two softbricked devices over here that i'm attempting to fix. Been going at my Z3V for about 4 days, and this galaxy all night and morning. I am literally stuck at boot and cant even turn the galaxy off.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] sssscary:
My safetycheck was passing with magicsk , but all of a sudden it is getting the cts mismatch.. why would that happen?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Alg0rhyth3m':
Anyhow, for now i have got back to stock with TWRP still loaded. Feels safer sitting there for now. Had tried to root again earlier but everything breaks when Magisk comes into play.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] zenful:
You could just install supersu without magisk if you wanted root Lol
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Alg0rhyth3m':
Tried that. Then rebooted and lost binary.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] joam280:
Some rom 7.0 for this model t 280? ??

Enviado desde mi SM-G950F mediante Tapatalk
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Phonefrench:
Great job !

Now, my dream is a rom for t280 ??
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Jadog:
The new TWRP flash works fine. However, the SR3-SuperSU-v2.79-SR3-20170114223742.zip and aqa4-gtexswifi-SU279sr3.img cause my tablet to hang at the Samsung Boot screen each time I reboot. The only way to get past is to boot into TWRP recovery and then choose reboot to system. I rolled back to the SR1 2.78 version and it works perfectly.

Does everyone else experience something different?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] zenful:
I actually had that same problem at first, but for some reason it doesn't happen (at least as often) with the latest SR3 version.

After your first install, wipe dalvik and cache.

You should boot fine, afterwards any time that I ran into that issue I simply wiped my cache, not even dalvik (unless I felt it needed it) and viola I was good to go :)

Hope yours gets worked out.

Also, for anyone who wants to see more development for this device, we need a permissive kernel first. If you can help, that'd be a great start!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ngvhoang96:
I tried to flash this today and I couldnt get into recovery (it showed "RECOVERY IS NOT SEANDROID FORCEFULL") nor get into system( it kept stuck in the samsung boot logo). is there any stock fw?

I tried the:

- T280XXU0AQA4_T280BNN0API4_HOME.tar.md5

- T280XXU0AQA4_T280XAR0APH3_HOME.tar.md5

but none of them worked :(
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] zenful:
As far as firmware, the link to sammobile I gave you before are the best routes for that. Bootloops I've been stuck at were only at the main boot screen, the Samsung animation screen I had to just leave alone until it fully loaded which did take a few good minutes. A lot of sweat during those minutes lol and you may need to wipe your device once you're able to get back to recovery, constantly flashing on top of flashing without any wipes could cramp space on partitions or overwrite data in ways that just give problems.

Fully wipe your device, flash a stock firmware from sammobile (preferably the one your device came with, make your best guess) , clear your cache and dalvik as you finish stuff up, than let it load up. Than come back to this thread and follow instructions. I hate you're having such an issue with your device, yet I feel like it shouldn't be this complicated lol

Good luck again man.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ngvhoang96:
Mine doesn't even get into that animation screen. It kept stuck at that samsung logo, and I couldnt turn the device off either.

----

How could I "full wipe" my device when could get into the recovery mode?

And all the fw I have tried flash got error at "NAND WRITE!! system.img".

Never fell like giving up like this.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] zenful:
Before you started ever flashing anything, did you make sure to enable OEM unlocking?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ngvhoang96:
yes I did
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] fightingbeer:
Hi. This tutorial worked fine - note that MAGISK will let you grant Superuser access, but SuperSU won't, at least according to my tests and RootChecker. I have a question or two.

Firstly, every time I try to flash a ROM (first a stock one, for good measure, and then the TINKER ROM with the slight bugs) I keep getting the 'no MD5 found' error, even though it's right there in the zip, and unchecking the verification box won't have any effect. I have also tried with Flashify, Flashfire, Auto Flasher, ROMBox, MultiROM. The apps will extract the file but not do anything else, Flashfire will at least get it in the flash queue, but after rebooting gets caught on the SAMSUNG logo with the shooting start effect (but it is not softbricked). I am guessing they are getting caught at the MD5 error. FYI - all have root access and XDA Xposed 2.2+

What can I do?

Secondly, if you make a backup to external SD, what happens to (say) your whatsapp or wickr messages? Do they get erased, so that they aren't there when you load the recovery again? Does this mean you could have (say) multiple whatsapp or signal accounts on the same tablet?

That one's just a curio, I'm more worried about getting the thing to work.

UPDATE: tried to extract with 7zip with full paths. Naturally, it didn't work. Jesus Christ, why is this so damn shaky?

This is what I got on the terminal in recovery:

Obviously the red text is the issue. What do I do? Is it TWRP or Samsung just being tricky bastards?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] _mone:
TinkerEdition ROM or stock firmware are not meant to be flashed via recovery, but via ODIN or Heimdall.

Follow the steps in the TinkerEdition ROM thread and you'll be fine:

If you "backup" nothing get erased, you just create one or more "backup" files (depends on which partitions you choose to backup) and lately you can use those files to restore your system, boot, etc to the status that they were when you backed them up.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lagqboy:
Need Help with Magisk v12.0

I started on a fresh Install. Installed twrp-3.1.1-0-_mone-gtexswifi.tar via Odin.

Next I Loaded Magisk-v12.0.zip and T280XXU0AQA4-Magisk-v12.0-boot.img to my SD Card.

I rebooted into recovery mode and flashed Magisk-V12.0.zip followed by T280XXU0AQ44-Magisk-v12.0-boot.img

I then rebooted and installed the latest Magisk Manager from the Magisk XDA thread.

When I opened the Magisk Manager, it says I have Magisk v12.0 installed and that rooted with MAGISKSU (TOPJOHNWU)

In the setting tab there is no option for Magisk Hide or to enable Busy Box.

It's missing quite a few options. Also When I try to install any modules from the download section,

it gives me an error installing. I stayed up all night trying to figure out the problem with no success.

Can someone please give me a hand here? Thanks in advanced.

I have SM-t280 with build # LMY47V.T280XXU0AQA4
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] _mone:
Try to use an old version of magisk manager. Probably v4.3.3 should work fine. The latest magisk manager is built to work alongside magisk v13.*, I've tried magisk v13.2 but it wasn't working at all, I was messing up the system already when I tried it, so maybe wasn't its fault.. Magisk v13.3 has now been released, I'll try it out on a clean system and I'll share the results here.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] radiohead14:
Hi, followed this instruction exactly and I got "SECURE CHECK FAIL : (recovery)" showing on my screen after (although Odin says PASS!)... Is this normal? I can see TWRP on my screen afterwards also, but not sure if this will lead to errors later? Please let me know. Thanks!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ashyx:
It's normal.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] radiohead14:
Thank you so much for your quick response!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] radiohead14:
Ok got everything up and running... except that when I updated MagiskManager and it asked for a reboot, it just froze at the boot screen. :( All I did was click the button within the app to "Download & Install" as it found version 13.3. Did I miss a step? Now I can't do anything, except go into recovery mode. Please help. Thank you!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ashyx:
You cannot update the boot image. You can only update the Magisk manager apk.

You will have to flash the Magisk boot image in the first post. You should then be good.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] _mone:
Magisk 13.3 doesn't seem to work, it doesn't root the device.

Follow again the steps to install Magisk 12.0 and install MagiskManager 4.3.3 (you'll find the apk attached to this post), after that do not update Magisk or MagiskManager or it'll mess up your device.

I'll soon update the instructions in the OP.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] _mone:
Thread Updated

Added SuperSU v2.82 and updated instructions for Magisk v12.0.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] sirwin44:
Has anyone been able to get magisk 13.3 running? If so what boot img did you use? I cant get 13.3 to boot
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] _mone:
As I said a couple of posts before yours, Magisk v13.3 doesn't seem to work for this device.. The boot.img that I used is the boot.img extracted from my device after the installation of Magisk v13.3 and patched by myself with the samsung's shi** headers.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] sirwin44:
With us currently not able to go to 13.3, is there anyway to pass safetynet while under v12?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] _mone:
Under request of quite few users I've uploaded two boot.img that have a kernel able to set SELinux to permissive.

With Magisk-v12.0 ramdisk patches:

T280XXU0AQA4-Magisk-v12.0-SPA-boot.img

With SuperSU-v2.82 ramdisk patches:

T280XXU0AQA4-SuperSU-v2.82-SPA-boot.img

The tag SPA stands for SELinux Permissive Able, this means that the kernel is able to set SELinux to permissive mode but it is not set by default.

You can set it running from terminal:

su
setenforce 0

If you want to set SELinux to permissive at boot there are few methods that you can use, you can find them here at xda.

I would like to have feedback about these boot.img as I have not tested them because I'm currently running T280XXU0AQF1 with SuperSU in system mode, and it has a different ramdisk, and I rather skip the pain to restore an old backup of AQA4 and test the images with the different root methods.

Kernel source: https://github.com/underscoremone/android_kernel_samsung_gtexswifi/tree/T280XXU0AQA4-SPA

What I have done is just remove the awful CONFIG_ALWAYS_ENFORCE, a proper custom kernel will may arrive in the near future.

Screenshots are taken from my device running T280XXU0AQF1 with the same kernel included in the boot.imgs shared in this post.

Looking forward for your feedback.. if everything is ok I'll add the link to the OP, if it is not I'll restore the old backup, make the tests for you and provide the new boot.img.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] zenful:
I'm so late to reply and you were so swift to get it uploaded for us, I am very grateful thank you for your hard work.

So far, using the SuperSU-v2.82 ramdisk patched boot.img I have had no problems on my *AQA4 fw. I had no problems booting, I had no problems with WiFi so far, and able to freely able to set my SELinux how I please. It there are any specific tests you know of that I could attempt for you let me know. For now I will tinker around in xposed to see how well it plays with me now that there is a permissive kernel!

Thanks again, and anything you need tested with this device just let me know (:

PS, if you do add the link to the OP make sure to put a tag in the title for a permissive kernel, all the T280 users will go nuts Lol (:

Update: I actually had noticed something after switching to the permissive kernel; my sound works better than it did before. Something about how it was before my sound seemed lower than normal unless I used head phones, and how unlikely, but this kernel seemed to fix the sound and now playing music or sound normally without head phones is just as loud as it used to be when I first bought the device! (:
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] tdukazudon:
Hello, how do you do?

I'm thankful for a wonderful effort!:)

Is pure aosp LMY47V put on by a build using this kernel source?

My first post.

My unskillful English, I'm sorry.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] zenful:
A quick update to [MENTION=6847876]_mone[/MENTION] I went ahead and flashed the Magisk SPA boot.img with my SM-T280 with the *AQA4 firmware and everything is running fine with the kernel being in permissive ?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] mokash34:
Thanks for the hard work. I hope to see ROMs for my T280 soon. The hardware deserves better software!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] guppie11:
Thank you for the guide.

Succesfully installed TWRP on my Galaxy Tab.

I do have an issue while flashing SU. When i try to flash the .zip file my TWRP reboots and it didn't do anything. By any change anyone here knows the reason because of this?

With kind regards,

Thomas
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] klemen241:
Hello, i had this tablet for a year and gave up on custom kernels and roms, but this thread gives me hope. Also tablet almost useless with 8gb internal memory, always full. So when you come to custom rom, i will gladly test it, i was a part of testing with the tinker edition that was debloated stock rom
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Sacul86:
Hi ive just tried this and have Magisk installed using the downloads in OP. I installed and opened manager, I have root but am getting safetynet failed: CTS Profile Mismatch. can I get over this?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] fightingbeer:
Hi mone, have a couple of questions for you which are unrelated to each other.

1. I got it working, all mastered. But If I do flash a second rom via ODIN, as discussed (sorry for the late reply!), then does that mean it becomes the primary ROM/firmware on the system? Will I be unable to use a Dualbooter app like Flashify to backup one and load the other at will from the home screen? I can get away with going into TWRP but it's quicker with a dualbooter.

2.) If I have two whatsapp accounts on two instances, how do I ensure that their backups etc. go into different folders and not the same? I'm thinking of using filemount to redirect the internal storage backup to the SD card, and having a different redirect for each account.

(I could use an app like SwitchMe but I want to do something that I know has no chance of breaking the encryption, because I can see precisely what's going on as I'm doing it).

How can partitions be used for this sort of thing? I've heard the word being thrown around here - what role do they play in TWRP SD cards etc.?

Sorry these arre pretty disparate quetions, but they are relevant as they're exploring what you can do with this.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ripee:
As a gesture of appreciation for _mone's work on another device, I decided to modify his twrp repo and try a build of version 3.2.1-0 for the gtexswifi from my device tree:

twrp-3.2.1-0-gtexswifi.img

twrp-3.2.1-0-gtexswifi.tar

I don't have this tablet so I can't test it, but it if it gets stuck on the boot screen, simply re-flash version 3.1.1-0, but any feedback would be great. If it does work, I'll submit it for official support.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Thesebax4:
[MENTION=6005084]ripee[/MENTION] your twrp stuck on boot logo

Can someone reupload twrp-3.1.1-0-_mone-gtexswifi.img ? On androidfilehosting error says:

OOPS!

no mirrors found.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ripee:
twrp-3.2.1-0-gtexswifi.img

twrp-3.2.1-0-gtexswifi.tar

Try mine now. I re-built 3.2.1-0 with _mone's original android-6.0 branch with the bootable_recovery repo (the one that contains the actual twrp code) branch set to android-8.0, which corresponds to version 3.2.1-0.

If it works, I'll create a separate thread and submit it for official support.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ripee:
I noticed that my 3.2.1-0 build has been downloaded a number of times. Would anyone like to report some feedback about it please?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] vayavalla:
I just tried it. I installed it via previous TWRP and now it won't boot. That's why I didn't wanted to try it before, when I had no time... Hope I can recover it...

Edit: I also tried the .tar version with odin with same result.

Just installed 3.1.1 version and all fine again.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] fightingbeer:
I have a question - I want to be able to switch from one instance to another from the tablet's main screen while it is on, like multiboot. No dualbooter app I've found works.. I have a few instances backed up from where I managed to get TWRP etc. working, but I would prefer to do it via screen because it is quicker than going into recovery mode etc.. Pleasebear in mind I am a noob - can I use ODIN to flash a new rom as a secondary? I'm worried about using odin in case I can't and it resets everything. Can I avoid all that and just use one of the backups on my sd card?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ripee:
TWRP 3.2.3-0

twrp-3.2.3-0-gtexswifi.img

twrp-3.2.3-0-gtexswifi.tar

Perhaps this will work better than my previous effort from a few months ago? I used _mone's own android-6.0 device tree.

Bootloader

T280XXU0AQL1.tar

You might as well update it while you're trying out the new TWRP :D Use Odin's "AP" button.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] NekoShinigami:
Please check the links and I would be glad to test it for you this weekend. I just tried downloading and I got a google drive error saying the files didn't exist.

I am having trouble with the Magisk build and I need an app to be a system app but TiBu is getting stuck on converting it, so I may just try to pull the Rom if I get a free weekend and do it the old-fashioned way lol.

unless someone has already made Roms for this tablet, honestly I didn't check.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ripee:
I took down the files because my twrp builds don't work.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] NekoShinigami:
ah, I got you. well if you happen to build another and need to test it I'd be glad to help.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ashyx:
We're up to 3.2.1.0. There's not much point in updating to the latest version as we're stuck on lollipop.

There aren't really any roms let alone Oreo for this device.

https://xdaforums.com/galaxy-tab-a/development/recovery-samsung-galaxy-tab-a6-sm-t280-t3475381
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] JBEVIA:
Hello, do not know yet, if you open update for TAB A 7 T280 2016, your older sister TAB A 10.1 ALREADY RECEIVED OREO, thanks.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] _mone:
Thread updated with TWRP-3.2.3-0.

Also updated root instructions, it's no more required to flash a separated boot.img after flashing the root method. Just flash Magisk-v18.1 and install MagiskManager afterwards.

Tested on SM-T280 running T280XXS0ARJ2 firmware.

EDIT:

Nevermind the root part.. Magisk flashes correctly and it says that it's installed but I'm not able to gain root access atm. Looking into it.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ripee:
3.3.0-0

twrp-3.3.0-0-gtexswifi.img

twrp-3.3.0-0-gtexswifi.tar

Here for anyone who wants to play around with the latest version. I make no guarantees as to its stability or compatibility with old roms, just something to try.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Lichsv:
that recovery doesn't work, after reboot stuck in the boot logo in Galaxy Tab A SM-T280
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ripee:
Oh well, thanks anyway.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Gleba1337:
If anyone want 3.3.0

https://www.mediafire.com/file/c1k8ssagt1t6u31/T280_TWRP-3.3.0.tar/file

Tested on my device, everything seems working.

Source:

https://github.com/underscoremone/android_kernel_samsung_gtexswifi

https://github.com/underscoremone/android_device_samsung_gtexswifi

https://github.com/minimal-manifest-twrp/platform_manifest_twrp_omni
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Lichsv:
Thanks! It Works!:D
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Mahir0:
Custom ROM

Looking for the SM-T280 Android 6.0 ROM but cant find it or it is not made