Root for SM-T290 (tab a 8.0 2019)

[J.Michael]

Hey

A guide explained to extract boot, recovery . vbmeta and put them in a tar and patch them with magisk. Then to add those 3 files with dtbo.img, modem.bin.lz4, vendor.img.ex4.lz4 etc etc and compress them to tar after padding them and use this as the new AP to flash with odin. When i do it like this, Odin failed.

I have tried to patch the original AP with magisk but that fails with Secure check fail : recovery.img

I tried to add just the boot, recovery, vbmeta (compressed to tar), but again that fails

Odin Patched, is on this thread, but saying that, i have used the patched and also the normal odin but still the same results.

https://xdaforums.com/android/software/patched-odin-3-13-1-t3762572

https://xdaforums.com/t/root-for-sm-t290-tab-a-8-0-2019.3965624/page-3#post-82487527

What guide talks about dtbo.img, modem.bin.lz4, vendor.img.ex4.lz4? (Your post is the only mention of dtbo.img in this thread.)

I think if you have flashed the full, unmodified, AP.tar, then to install Magisk you only need boot,recovery,vbmeta in a tar that gets patched.

Have you read the last 200 posts in this thread? (You should also check the T295 thread.)

 

[themace51]

Hello

I think if you have flashed the full, unmodified, AP.tar, then to install Magisk you only need boot,recovery,vbmeta in a tar that gets patched.

I have done it this way as well, and that fails with odin too.

Have you read the last 200 posts in this thread? (You should also check the T295 thread.)

I have hence the different methods i have tried.

What guide talks about dtbo.img, modem.bin.lz4, vendor.img.ex4.lz4? (Your post is the only mention of dtbo.img in this thread.)

After failing and failing , i tried the very first post of this

https://xdaforums.com/t/sm-t295-finally-rooted-tablet-updated-19-march-2021.4050329/

as TWRP does not work for thi tablet due to blank screen

The images below are example of using just the boot, recovery and vbmeta in a tar

 

[Talich52]

Hello

I have done it this way as well, and that fails with odin too.


I have hence the different methods i have tried.


After failing and failing , i tried the very first post of this

https://xdaforums.com/t/sm-t295-finally-rooted-tablet-updated-19-march-2021.4050329/

as TWRP does not work for thi tablet due to blank screen

The images below are example of using just the boot, recovery and vbmeta in a tar
View attachment 5375951View attachment 5375953

To root the T290XXU3BUC1 firmware, use the attached files. Select files as parts of BL & AP . after the firmware, update or install the Magisk Manager. apk of the current version and update the Root rights from it...
P.S. The first file is the loader of android 9,without it it is impossible to root android 10 and 11...
Zip files pre-unpack to tar

 

[themace51]

Hello

Thank you for the files, but afraid this does not work, it does succeed, but i get the blank screen bug like with TWRP

 

[J.Michael]

Hello

I have done it this way as well, and that fails with odin too.


I have hence the different methods i have tried.


After failing and failing , i tried the very first post of this

https://xdaforums.com/t/sm-t295-finally-rooted-tablet-updated-19-march-2021.4050329/

as TWRP does not work for thi tablet due to blank screen

The images below are example of using just the boot, recovery and vbmeta in a tar
View attachment 5375951View attachment 5375953

I'm losing track. Have you confirmed that your system version is low enough for you to have any hope of flashing modified files?

If you cannot flash the unmodified stock ROM files, you need to start there. You need to be able to do this to recover from mistakes. You should be able to do this even if you have not unlocked your bootloader. If you cannot do this, either you have some other problem (bad USB port or cable; corrupted file; I don't know what else), or you are misinterpreting something and the Odin step is actually succeeding.

My first test was flashing a stock ROM for another language: when Android booted and displayed another language, I finally believed Odin was really downloading and the bootloader (or the download mode) was accepting what had been downloaded by Odin and burning it to my tablet. At that point I burned the English ROM and believed I would be able to do it again when needed.

That "first post" you cited has to be read carefully. It is an amalgam of the true first post, and at least one update with more recent developments. The instructions you need to follow are not necessarily the last unstructions in that post.

 

[themace51]

Hey

I think the problem is that if I put android 9 bootloader or twrp , I get the blank screen bug that has been mentioned before.

Seeing as I have bootloader v3 and android 10 , thought it was possible to root, but I think the blank screen is stopping it, even thought it works but with no screen. I can load into twrp and flash a custom ROM with adb but just can not see anything on the screen

J.Michael sorry if I have confused you.

 

[J.Michael]

Hey

I think the problem is that if I put android 9 bootloader or twrp , I get the blank screen bug that has been mentioned before.

Seeing as I have bootloader v3 and android 10 , thought it was possible to root, but I think the blank screen is stopping it, even thought it works but with no screen. I can load into twrp and flash a custom ROM with adb but just can not see anything on the screen

J.Michael sorry if I have confused you.

What firmware do you have when the screen is working? At least once you said you have firmware T290KOO3BUE2/.

Is the blank screen only when you run TWRP? Does the Android system boot and display, even though the TWRP will not display?

 

[themace51]

T290KOO3BUE2 screen working
T290XXU3BUC1 Screen working (it is currently on this one atm)
It seems anything that has Android 9 e.g. S3ATF1 And TWRP, no screen. The moment reboot , blank screen. I can guess going into twrp and using adb. I can load into android but no screen, as i hear the sound notifications. No splash screen , no warning, no nothing. Just blank screen with backlight on.

 

[J.Michael]

@Talich52, do you think @themace51 could use the firmware you posted for @92millmac?

 

[Talich52]

@Talich52, do you think @themace51 could use the firmware you posted for @92millmac?

The stock firmware can be any, but for this model ... You can install and try to root, but I recommend starting not with changing the firmware, but installing the bootloader file from the 9 android aboot_vk_T290XXS3ATF1.tar, posted above.
If there will be no image on the screen, which means that Root-rights cannot be obtained on this device
I suppose the problem is in a faulty display, more precisely modified and working only with the current firmware ...

 

[Languor]

im really hoping someone can help me fix what i just did....

in odin, i selected erase nand and flashed the factory android 11 files..... now my tablet hangs on samsung logo and reboots now and then...

a search told me i need to repartition with a .pit file? it says it can be found in the csc file.... but i dont find it there.....

my tablet is the canada version i think, 32 gb


edit: so i finally fixed it after some digging and i want t share in case one of you get stuck like i did.

in odin, i added the ap, bl, csc, and cp files (i kept the bottom field empty). i checked nand erase and re-partition. i went to the pit tab and selected the pit file i got from the web, (full-repair-firmware dot com)

and it now is booted up.

 

[Talich52]

im really hoping someone can help me fix what i just did....

in odin, i selected erase nand and flashed the factory android 11 files..... now my tablet hangs on samsung logo and reboots now and then...

a search told me i need to repartition with a .pit file? it says it can be found in the csc file.... but i dont find it there.....

my tablet is the canada version i think, 32 gb


edit: so i finally fixed it after some digging and i want t share in case one of you get stuck like i did.

in odin, i added the ap, bl, csc, and cp files (i kept the bottom field empty). i checked nand erase and re-partition. i went to the pit tab and selected the pit file i got from the web, (full-repair-firmware dot com)

and it now is booted up.

After applying Nand Erase All, sometimes the device does not boot and you need to go to recovery and perform wipe data. In fact, format data and format cache are made, after which the device will boot

 

[Viggen66]

@aaytar , @Viggen66
What version of stock did you have when you bought the tablet? If it was Android 9, you may be able to reinstall Android 9 stock, let it go online and re-register, and go from there. (I had to do that at one point.) If it was Android 10, I'm sorry, I can't help with that.

My T290 came with Android 10, if I'm not mistaken, Spanish tablet, it has the black screen whenever I want to unlock the tablet, now even OEM unlock doesn't appear, and don't know how to revert it.

 

[J.Michael]

My T290 came with Android 10, if I'm not mistaken, Spanish tablet, it has the black screen whenever I want to unlock the tablet, now even OEM unlock doesn't appear, and don't know how to revert it.

Have you tried flashing the stock firmware?

 

[Viggen66]

Michael,

Yes if I flash stock rom that came with the tablet, the screen is back again.

 

[Talich52]

Michael,

Yes if I flash stock rom that came with the tablet, the screen is back again.

And if you flash another firmware, but also a stock one? Has the tablet been updated and successful? Or just sit on the original firmware?
Most interestingly, is it possible to install firmware 9 of an android type T290XXS3ATF1, that is, with the same version 3 of the bootloader? In general, this is allowed, we do not downgrade the version bootloader ...
If the Android 9 firmware is installed and works, then the device can be rooted. If there is no image on Android 9 either, I suppose the device should be returned under warranty, as with a faulty display or board ...

 

[predatorisback]

To root the T290XXU3BUC1 firmware, use the attached files. Select files as parts of BL & AP . after the firmware, update or install the Magisk Manager. apk of the current version and update the Root rights from it...
P.S. The first file is the loader of android 9,without it it is impossible to root android 10 and 11...
Zip files pre-unpack to tar

Guys help!
I flashed these files and now i get this message when i turn on the tablet

any help would be appreciated!
How can i fix this?
I just wanted to install TWRP (which worked) and then root my tablet (sm-t290)

 

[Talich52]

Guys help!
I flashed these files and now i get this message when i turn on the tablet
View attachment 5477647 View attachment 5477649
any help would be appreciated!
How can i fix this?
I just wanted to install TWRP (which worked) and then root my tablet (sm-t290)

We see KG Status: Prenormal and at the same time you can install only stock files. I believe this happened after filling TWRP and logging in. You can not do this, immediately after filling the TWRP file, you need to log in to it and install Magisk.zip to patch the kernel and disable lock protection. Only after applying the patch to disable memory encryption and applying Magisk.zip , you can upload to the system. Now you need to flash the current stock firmware to get the KS Status: Checking status and then put TWRP and Root rights again.

 

[predatorisback]

We see KG Status: Prenormal and at the same time you can install only stock files. I believe this happened after filling TWRP and logging in. You can not do this, immediately after filling the TWRP file, you need to log in to it and install Magisk.zip to patch the kernel and disable lock protection. Only after applying the patch to disable memory encryption and applying Magisk.zip , you can upload to the system. Now you need to flash the current stock firmware to get the KS Status: Checking status and then put TWRP and Root rights again.

ok thank you very much. I am trying to find the stock rom but i cant find it anywhere. Can you help me? (Greek model if that helps)

 

[Talich52]

ok thank you very much. I am trying to find the stock rom but i cant find it anywhere. Can you help me? (Greek model if that helps)

Judging by the message above, this is firmware T290XXU3BUC1. Greece is part of the OXM multi-region. I'll post this firmware to the Mega service.

2.96 GB file on MEGA

mega.nz