yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Tab A series Guides, News, & Discus] Talich52:
It works faster ;) .

In the Korean firmware is 1.2Gb free space in the system, but 304Mb was free on the European firmware...

In this case, the PIT file is the same, so the firmware is installed completely, but the model will be T295N .

Korean firmware is also available for the T290 model.
[Samsung Galaxy Tab A series Guides, News, & Discus] huckky:
hello all. great news about the root. the thing is, my firmware is T290XXS3ATE2. Is there any way I can make it work?

Thanks in advance
[Samsung Galaxy Tab A series Guides, News, & Discus] sevsman:
I skipped the root part and went straight with TWRP. It took a lot of messing with buttons, but it finally worked and my custom android 10 ROM is running perfectly.
[Samsung Galaxy Tab A series Guides, News, & Discus] huckky:
actually i dont care about the twrp part myself. i like to have root for blocking ads and stuff
[Samsung Galaxy Tab A series Guides, News, & Discus] sevsman:
That's why I built a custom ROM for it. Fully debloated, rooted etc and now I'm starting work on the aroma.

A custom stock based ROM with TWRP is always better than just a rooted stock.
[Samsung Galaxy Tab A series Guides, News, & Discus] secretwolf98:
What custom Android 10 ROM are you using? Project Treble? If so, which variant? If it is Project Treble, how did you get it to boot?
[Samsung Galaxy Tab A series Guides, News, & Discus] sevsman:
It's my own custom ROM and you should know this as you asked to test it but have failed to do so.
[Samsung Galaxy Tab A series Guides, News, & Discus] secretwolf98:
Oh yeah, I will test that on Monday, because I work today and tomorrow.
[Samsung Galaxy Tab A series Guides, News, & Discus] cossak2007:
Where Can I download your custom rom ?

How do I PM you to get the link for your rom?

Newbie to XDA :)

Thanks

Terry
[Samsung Galaxy Tab A series Guides, News, & Discus] secretwolf98:
Click their name and click private message.
[Samsung Galaxy Tab A series Guides, News, & Discus] cossak2007:
Thanks
[Samsung Galaxy Tab A series Guides, News, & Discus] cossak2007:
Your Custom Rom

Have flashed TWRP with ODIN many times successfully but even after instructions I have been unsuccessful in booting into TWRP.

Am I flashing the proper TWRP ?

Flashed test_twrp_t290.tar

Also as to booting into TWRP I have followed the instructions but end up in attached screen.

Question ... when I boot up in Bootloader is Unlocked Screen with push power button to continue , where do I go from there to get into TWRP mode ? if I can from there.

Thanks all
[Samsung Galaxy Tab A series Guides, News, & Discus] J.Michael:
I think if you have that screen, you have not "flashed" TWRP: you have booted to recovery, and that recovery was not TWRP.
[Samsung Galaxy Tab A series Guides, News, & Discus] cossak2007:
Your Custom Rom

Attached pic of successful flashing of TWRP

Am I flashing the wrong TWRP ???

Wrong key combinations to get into TWRP ???

I have no clue :)
[Samsung Galaxy Tab A series Guides, News, & Discus] Talich52:
First you need to disable AutoReboot in ODIN, since after reboot the stock recovery is restored;)

Flash the TWRP file, unplug the cable, press Power until reboot, first hold down the 2 Volume Up and Power buttons, hold the bootloader unlock warning screen until the bootloader unlock warning screen, then only the Volume Up button before entering TWRP.

Good luck!
[Samsung Galaxy Tab A series Guides, News, & Discus] J.Michael:
I'm not convinced this is the right thread for this discussion.

I am not a TWRP user.

I think you are using the right key combination to get into TWRP. As I understand it, TWRP replaces the stock recovery, so you use the same keys to "go to recovery", and that recovery ends up being TWRP. It should be less traumatic than trying to boot half-way to recovery to trigger Magisk.

I haven't been able to find the discussions in this thread of how to install TWRP. I would guess that it's like installing Magisk. [MENTION=4470081]topjohnwu[/MENTION] advised always having at least boot, recovery, and vbmeta in the tar file used in the AP slot in Odin. He also advised filling the other slots. I think people have reported success specifying an AP file, but not specifying other files, but that might have been with another device.

Where did you get your TWRP tar file?

What is in your TWRP tar file? (What is reported by "tar tvf <tarfile>"?)
[Samsung Galaxy Tab A series Guides, News, & Discus] exglynco:
I had successfully rooted my SM-T290 with the 12/19 firmware, back around the 6th page of posts in this thread. But after I upgraded to the OEM 03/20 firmware, I lost my unlocked bootloader, and it has never given me the option to unlock it again. Once I flashed the 03/20 kernel, it doesn't allow me to flash back to the 12/19 firmware. I can flash the 05/20 and 07/20 firmware, and the 06/20 upgrade, but none of them allow me to see the OEM unlock option, no matter how I manipulate the system dates and even unplug my ethernet/internet connections. There are threads that say you can't unlock the bootloader on snapdragon chipped Samsungs, but we know better. My problem seems to be that once I toggled the OEM unlock bit to off, after it had been on, Samsung won't permit it to

be unlocked again.
[Samsung Galaxy Tab A series Guides, News, & Discus] cossak2007:
Your Custom Rom

Don't know how to add attachments in Private message reply so reply back to you with attachment whether I have root.
[Samsung Galaxy Tab A series Guides, News, & Discus] sevsman:
You'll need either TWRP or root to use my ROM. With root you can install TWRP from within android by using the TWRP app or flashify.

It's up to you to get it working as all the info is here but it just seems to be a pain in the arse for some users and I honestly thing I got it just by luck.
[Samsung Galaxy Tab A series Guides, News, & Discus] temporarium:
Root is not hard to get if you follow the instructions.

The problem may be (for some) that to have root activated, **you must briefly press volume up as soon as the tablet starts booting**, immediately after the unlocked bootloader warning. If you don't, Magisk/root won't be activated. You have to do this on every reboot. Not sure about the custom ROM, but stock recovery requires this as far as I'm aware.
[Samsung Galaxy Tab A series Guides, News, & Discus] Talich52:
You do not need to do this, since only the kernel is patched, and the recovery remains stock. You are confusing it with smartphones, where Magisk is installed in the / recovery section, on the T290 / T295 tablet, Magisk is installed in the kernel ...

If you wish, the stock recovery can be replaced with a custom TWRP ...
[Samsung Galaxy Tab A series Guides, News, & Discus] cossak2007:
Is this the menu we are talking about??
[Samsung Galaxy Tab A series Guides, News, & Discus] cossak2007:
Your Custom Rom

Well I'm one of those users but persistent in my efforts to find solution :)

Soft bricked tablet but able to get into Download mode and flashed the AP of stock rom and restoring apps and settings back from Google .

Been rooting for years on phones , soft and hard bricks but on my first attempt on a tablet, finding it frustrating and as mentioned " pain in the arse" :)

No idea how I ended up soft bricking the tablet !!!

************************************************************

It's up to you to get it working as all the info is here but it just seems to be a pain in the arse for some users and I honestly thing I got it just by luck.[/QUOTE]
[Samsung Galaxy Tab A series Guides, News, & Discus] secretwolf98:
SM-T290 Project Treble ROM boot success!

I finally got Project Treble Android 10 to boot on the device. To be able to get it installed. You will have to have the latest Android 10 firmware vendor installed on the device. The device will install and boot the GSI fine with the A/B ARM64 option.
[Samsung Galaxy Tab A series Guides, News, & Discus] Reick7:
Which Treble IMG tested? bugs?
[Samsung Galaxy Tab A series Guides, News, & Discus] J.Michael:
Unless you are talking about some Android > 9, on the SM-T290, Magisk goes in recovery, you have to boot halfway to recovery to trigger Magisk the first time, but after that, a boot from completely shut down comes up with Magisk (and root). After that first time, the only time you have to dance on the buttons is if you select "reboot" from the Power menu (instead of shutting down completely).

---------- Post added at 23:17 ---------- Previous post was at 23:12 ----------

That is some secondary recovery menu. It is not the primary recovery menu. I have never seen an explanation of what it is, or what's supposed to trigger it. I might have been able to get it consistently when I was trying to install Magisk, but I haven't tried lately.

I think either recovery menu can be used to get to download mode. There are posts suggesting that it is important to get to download mode a particular way. I probably used the particular way the one time I was successful, just because I was tired of screwing around, and somebody had said it was important.
[Samsung Galaxy Tab A series Guides, News, & Discus] Talich52:
When you restart the device, a warning screen appears about the unlocked bootloader.If you press any volume button, you will get to this menu.Of interest is the recovery item, selecting it and briefly pressing Power, we do not get into recovery, but into bootloader mode,which is very useful when flashing the device ;)
[Samsung Galaxy Tab A series Guides, News, & Discus] secretwolf98:
I used this img. There isn't any bugs. It's very faster than the stock firmware. And the battery life lasts longer. https://github.com/phhusson/treble_...nload/v222/system-quack-arm64-ab-gapps.img.xz
[Samsung Galaxy Tab A series Guides, News, & Discus] temporarium:
Well, I rooted mine using the process recommended by the Magisk developer, and my Android 9 SM-T290 stock ROM requires the volume-up keypress on every reboot or else Magisk shows as "not installed". I don't reboot it very often, so I can't be bothered to flash/root again. I just pointed that out in case some are in the same boat and keep "loosing" root.
[Samsung Galaxy Tab A series Guides, News, & Discus] Reick7:
thanks, any tips on installation? like Patch and stuff?
[Samsung Galaxy Tab A series Guides, News, & Discus] J.Michael:
I remember the original instructions warned I would have to boot towards recovery every time. Then I found that I did not, and there were posts explaining that only the Power -> Reboot would "lose" root (i.e., not activate Magisk).

Could you be using a version of Magisk even older than the one I'm using? (20300, was canary debug at the time) Or whatever changed could have been changed back. Or it depends on the firmware. (I'm still on XXU1ASH1.) Or you're taller than I am.
[Samsung Galaxy Tab A series Guides, News, & Discus] sevsman:
At this stage it would be 100x easier for people to just flash the TWRP files and then boot to TWRP and flash magisk. 2 birds with 1 stone and from all of my personal messing about I never managed to boot stock recovery after flashing the rooted files, but TWRP did work.

TWRP will not only be the easier way to do it but it's also more important because then you can either root easily or flash a ROM.
[Samsung Galaxy Tab A series Guides, News, & Discus] secretwolf98:
Just do a factory reset. Don't wipe the system. If you wipe the system, you wipe the boot.img (kernel)
[Samsung Galaxy Tab A series Guides, News, & Discus] cossak2007:
Your Custom Rom

Didn't previously see the Secure Check Fail vbmeta on top of screen as in screen shot after flashing TWRP recovery.

Probable cause of not getting root.

Solution anyone ????

Thanks to all to previous posts in assisting me with trying to obtain root.
[Samsung Galaxy Tab A series Guides, News, & Discus] secretwolf98:
I would try connecting with Odin. Then flash the latest stock firmware.
[Samsung Galaxy Tab A series Guides, News, & Discus] cossak2007:
Will do:)

Anyway of flashing stock firmware without losing the data ?
[Samsung Galaxy Tab A series Guides, News, & Discus] cossak2007:
Your Custom Rom

Flashed stock firmware and same error in download mode after flashing TWRP

Thinking maybe corrupt file, have downloaded test_twrp_t290.tar many times and flashed with same result.

Anything else I can try?
[Samsung Galaxy Tab A series Guides, News, & Discus] J.Michael:
I always got "SECURE CHECK FAIL: vbmeta" when flashing Magisk modified firmware, including the times that worked. It may be that it was important that I used a smaller tar file (just boot, recovery, and vbmeta) on the successful run -- maybe Odin finishes downloading before it gets the error message from the tablet. Anyway, that message does not mean that you failed.

When you flash TWRP, do you make a point of going directly to recovery? If it was important when flashing a Magisk modified recovery, it may be important when flashing any non-standard recovery.
[Samsung Galaxy Tab A series Guides, News, & Discus] sevsman:
Yes, you have to go straight to TWRP because the stock firmware will replace the recovery unless you boot TWRP straight away. Also, TWRP can do a weird initialising thing which means it'll auto reboot and you need to catch it again then too.
[Samsung Galaxy Tab A series Guides, News, & Discus] Max128:
Hello ,

I need some information, i know well android with HTC and Google devices.. but not really with samsung , i have buy this tablet the t290 this week , is my first samsung devices.. i have read some threads here for to know more .. I know about odin and some other stuff.. My firmware now is T290XXU2ASL3 ( android pie ) and the CSC is XAC so Canada.. I have downloaded frija and i have downloaded the last firmware for it (is android 10 july ) After that i have unlocked the bootloader with the method here..

So my questions is this for to be sure:

If i update now to android 10 , after that i still can root the device ? If yes how exactly ? I have only need to flash test_twrp_t290.tar from here with odin and after i flash magisk with twrp and is done ?

After that with the root how can I get the next OTA exactly, what i have need to do?

For how to updating the device with odin with the firmware files... why i have two CSC files in my zip? I mean i have CSC_OMC_XXXX and HOME_CSC_OMC_XXXXXX so which one i put it on odin at CSC to flash?

Is look like with frija you can only download the last update.. if you want to download a old version, what is the best website for this ? I have found samfrew but is slow!

Thanks!!
[Samsung Galaxy Tab A series Guides, News, & Discus] Talich52:
Why are you fixated on the message about vbmeta ? If you see a green pass Board in ODIN during the firmware update! ,then everything was flashed successfully,and the message only warns that the vbmeta file does not pass the security check, because the file is actually empty after the patch, otherwise it would not be possible to flash the custom recovery or kernel. :)

---------- Post added at 10:41 AM ---------- Previous post was at 10:34 AM ----------

If the firmware is 10 Android, then in addition to installing Magisk.zip from TWRP, you need to flash part of the BL from the previous firmware 9 Android. You can do this at a time by selecting the desired files in the BL & AP window.

If the OTA Downloader is unlocked, the update will not be installed, even if it is downloaded... Use ODIN and the HOME_CSC part, which is used for updating, and the CSC_ part is used for the service version of the firmware,that is, using the PIT file and resetting all data.

After the update, you need to get Root again and install TWRP.
[Samsung Galaxy Tab A series Guides, News, & Discus] secretwolf98:
no

---------- Post added at 07:43 AM ---------- Previous post was at 07:42 AM ----------

in the bootloader, do you see PRENORMAL or CHECKING anywhere? If so, which one?
[Samsung Galaxy Tab A series Guides, News, & Discus] cossak2007:
Your Custom Rom

Don't see anything like that ... attaching screenshot in bootloader mode

Quote in the bootloader, do you see PRENORMAL or CHECKING anywhere? If so, which one?[/QUOTE]
[Samsung Galaxy Tab A series Guides, News, & Discus] Max128:
First thanks you for the answer! Second , so i can flash now the full firmware of android 10 and after that i can downgrade the bootloader to pie with your method on odin is this is the right method right?

For getting the next update in OTA what i have need to do? i need to upgrade again the bootloader to android 10 and remove the root ? Otherwise it is maybe more easier to update manually with odin and keeping the root ?

The CSC_OMC actually like you said is only give a factory reset.

What about my other question about frija and download old versions ? what website is the more used and free for this? Because i need to download the pie rom for getting the bootloader.
[Samsung Galaxy Tab A series Guides, News, & Discus] Talich52:
The device has a line KG Status: Checking, but this does not prevent the installation of custom files. Another thing is KG Status: Prenormal, which prohibits flashing custom files ...

Above I answered another post about vbmeta, did you read it?

---------- Post added at 07:55 PM ---------- Previous post was at 07:41 PM ----------

The loader in android 9 and 10 is still the same version 3, so you can sew 10, and on top of 9 android ...

To update the device by air, you need return the original bootloader, lock the bootloader back, which is done only with data reset.

You may also need to flash the current firmware to completely remove the traces of rooting ...

You can update via ODIN, but then get Root rights again, since the stock kernel and recovery will be installed ... At the same time, it is not known what the update will be, but most likely with an increase in the bootloader version and it is not clear how then to root the device ...

I am using the site at the link: https://samfrew.com/ru/model/SM-T290/

The speed, if free and without registration, is small, but acceptable, while it is significantly higher on the mobile network (I have full unlimited).
[Samsung Galaxy Tab A series Guides, News, & Discus] cossak2007:
Thank you for response

As I am understanding, I am on Android 10 firmware so download Android 9 firmware and flash the BL and AP from the Android 9 firmware

Then flash the TWRP recovery

Is that correct ?

Have I been flashing the correct TWRP file, test_twrp_t290.tar for my T290 ?
[Samsung Galaxy Tab A series Guides, News, & Discus] Talich52:
You understood me wrong! To root 10 android, flash through ODIN part of BL from Android 9 firmware by selecting the BL file in the BL ODIN window and the test_twrp_t290.tar file by selecting in the AP ODIN window.

Before flashing to ODIN, disable AutoReboot, after uploading files, go to TWRP and install Magisk.zip to patch the kernel and get Root rights ... :)
[Samsung Galaxy Tab A series Guides, News, & Discus] cossak2007:
Gotcha

Thanks for clarification ?
[Samsung Galaxy Tab A series Guides, News, & Discus] cossak2007:
Tired and frustrated with trying to root my Android 10 tablet.

Have locked bootloader and flashed Android 9

Start again with trying to root Android 9 hoping for better results.

Any suggestions on rooting now, as any different instructions rooting Android 9 than 10 ?
[Samsung Galaxy Tab A series Guides, News, & Discus] Talich52:
What exactly is the firmware on Android 9? maybe there is a ready-made file for rooting, but if not,can be done ... :)

P.S. at what stage was the problem?

You can first root android 10, and then install TWRP, this is perhaps easier ...
[Samsung Galaxy Tab A series Guides, News, & Discus] Max128:
I have a problem, i have copy magisk on the internal storage and my sd card.. so after in twrp when i want to select magisk.. in folder storage and sd card 1 is completely empty, if i select sdcard i have some folder with chinese names i guess ? is like DigFTTS8lja.......... ( if i am looking the storage with the computer after the boot all of my files is here and i do not see any chinese folder..) After that in twrp i select , select storage the internal storage look mounted because i see 22699MB but see nothing, i have never seen this problem with twrp , i fix this how ?
[Samsung Galaxy Tab A series Guides, News, & Discus] Talich52:
What firmware is installed? which TWRP is stitched? First,in the TWRP settings, select the language, Russian is enabled by default... Also ,before installing zip files,first select the media in TWRP-built - in memory(sdcard) or memory card(sdcard1) This is all about the TWRP of the respected mehanik6, there is another TWRP that did not work with it...
[Samsung Galaxy Tab A series Guides, News, & Discus] cossak2007:
Android 9-T290XXS3ATF1_T290OXM3ATF1_XAC ( Canada)

In Android 10, different answers from developers

on rooting and key strokes required to get in TWRP

"PRENORMAL or CHECKING in bootloader"

Haven't seen this at all !

"Flash the TWRP files and then boot to TWRP and flash magisk" or

"Flash TWRP and Android 9 bootloader together"

"Check Fail vbmeta" on top of screen after flashing TWRP recovery in Download mode

IS this a message everyone gets when they have flashed TWRP?? or only a few people?

"The problem may be (for some) that to have root activated, **you must briefly press volume up as soon as the tablet starts booting**, immediately after the unlocked bootloader warning. If you don't, Magisk/root won't be activated. You have to do this on every reboot. Not sure about the custom ROM, but stock recovery requires this"

Key strokes sequence, before, during or after Bootloader Unlocked screen appears.

For those that are not developers like me, instructions are not clear as to concise step by step procedures to boot into TWRP

eg....after flashing recovery, its still in Download mode....instructions have been not clear or different key sequences;

power+volume down and then power up or short power up when boots and vibrates etc.

Used the test_TWRP_T290.tar recovery file.

Nobody has answered whether they were using the same recovery file I was flashing or another recovery that they suceesfully rooted.

KG Status: Prenormal etc,have never seen this message on any of my screens when booting

Taking a few days off from rooting and start again in Android 9 this time :)

Suggestions are always welcomed and appreciated

Maybe issues are related to my device only

Don't know yet :)
[Samsung Galaxy Tab A series Guides, News, & Discus] Max128:
Installed full Android 10, after that i have flash bl from Android 9 and twrp like you have said. No error at all. I already changed the language but is normal twrp settings is never save? You need to do it each time. What you mean by sélect the media? I have selected the storage many times and search on it but twrp still see nothing. The sd card i have installed on it is never want to mount
[Samsung Galaxy Tab A series Guides, News, & Discus] Talich52:
Hmm ... maybe the big map size is the problem? I have a 32GB memory card, try with another memory card ...

Alternatively, contact the TWRP developer: https://xdaforums.com/showpost.php?p=83450593&postcount=117
[Samsung Galaxy Tab A series Guides, News, & Discus] Talich52:
Here is the file to root, Unpack the zip archive and select the tar file as part of the AP in ODIN. After the reboot, there will be Root rights, but to manage them, install Magisk Manager v20.4.

Check for Root with Titanium, Phone Info, RootExplorer, they should work under Root rights ...

But first you need to unlock the bootloader! Otherwise, nothing will be flashed ...

After rooting, you can install TWRP through the Flashify app and boot straight from the app to TWRP.

To do this, extract the recovery.img file from the test_TWRP_T290.tar file, which you can flash through Flashify.

P.S. when flashing the boot_vbmeta_T290XXS3ATF1_Root_M20.4.tar file, ignore the vbmeta warning! The main thing is that the green PASS! window appears in ODIN, this will mean that all files are flashed ...

After flashing the root file, let the device boot, do not press any buttons ...