[RECOVERY][TWRP-3.4.0-3] Samsung Galaxy Tab A 7.0 - SM-T280 (gtexswifi)

[_mone]

Team Win Recovery Project 3.4.0-3 for Samsung Galaxy Tab A 7.0 - SM-T280 (gtexswifi)

***Disclaimer*** 
All flashing is done at your own risk!
While nothing from this thread should break your device,
don't come back here blaming anyone if it does!

Always backup your current ROM (and/or keep stock firmware close by) before flashing.

Big thanks to @ashyx and @jedld for the amazing work done for this device.


Installation Instructions

• If you don't have a custom recovery:

- Download twrp-3.4.0-3-_mone-gtexswifi.tar
- Reboot your tablet in download mode (power+vol-down+home) and connect it to your pc
- Using ODIN load the downloaded file to the AP slot and press start
- As soon the tablet start to reboot hold vol-up and home (don't let it reboot to system)
- Now you should see TWRP-3.4.0-3

• If you already have a custom recovery:

- Download twrp-3.4.0-3-_mone-gtexswifi.img
- Reboot into recovery mode
- Flash the downloaded img in the recovery partition
- Reboot the recovery, now you should see TWRP-3.4.0-3


If you require "root", just download Magisk (v18.1 as of February 2019) and flash it with twrp. You may need to install MagiskManager afterwards. No extra steps required.

Old root instructions:

ROOT Instructions
These methods have been tested on samsung's T280XXU0AQA4 firmware

• SuperSU v2.82:

- Download SuperSU-v2.82-201705271822 and T280XXU0AQA4-SuperSU-v2.82-boot.img
- Move the downloaded files to tablet's internal/external sdcard
- Reboot into recovery mode
- Flash SuperSU
- Flash "T280XXU0AQA4-SuperSU-v2.82-boot.img" into boot partition
- Reboot, now you should be rooted

• Magisk v12.0:

- Download Magisk-v12.0.zip, T280XXU0AQA4-Magisk-v12.0-boot.img and MagiskManager-v4.3.3.apk
- Move the downloaded files to tablet's internal/external sdcard
- Reboot into recovery mode
- Flash Magisk-v12.0.zip
- Flash "T280XXU0AQA4-Magisk-v12.0-boot.img" into boot partition
- Reboot
- Install MagiskManager-v4.3.3.apk
- Done
- Do not update Magisk and/or MagiskManager

• Old methods:

• SuperSU v2.79:

- Download SR3-SuperSU-v2.79-SR3-20170114223742.zip and aqa4-gtexswifi-SU279sr3.img
- Move the downloaded files to tablet's internal/external sdcard
- Reboot into recovery mode
- Flash SuperSu
- Flash "aqa4-gtexswifi-SU279sr3.img" into boot partition
- Reboot, now you should be rooted

• Magisk v11.6 (currently working only with SuperSU):

- Follow every step to install SuperSU
- Open SuperSU app and make sure you are rooted (let it disable knox is a good idea)
- Download Magisk-v11.6.zip and aqa4-gtexswifi-SU279sr3-Mag116.img
- Move the downloaded files to tablet's internal/external sdcard
- Reboot into recovery mode
- Flash Magisk
- Flash "aqa4-gtexswifi-SU279sr3-Mag116.img" into boot partition
- Reboot, open and update MagiskManager, grant it root permission
- Done

Useful links:
TWRP: https://github.com/omnirom/android_bootable_recovery/
Device Tree: https://github.com/underscoremone/android_device_samsung_gtexswifi
SuperSU: https://forum.xda-developers.com/apps/supersu
Magisk: https://forum.xda-developers.com/apps/magisk

 

[_mone]

reserved#1

 

[Del_Usion]

Thank you!

I've been looking for some updated TWRP and Magisk installs for the T280, so this is great. Should this pass SafetyNet checks? On my first attempt, it did not appear to do so, but I'm grabbing a stock image to try again 100% fresh.

 

[_mone]

I've been looking for some updated TWRP and Magisk installs for the T280, so this is great. Should this pass SafetyNet checks? On my first attempt, it did not appear to do so, but I'm grabbing a stock image to try again 100% fresh.

Unfortunately not with Magisk-v11.6... anyway looking at Magisk github topjohnwu is working on fixing bugs for samsung devices.. we probably won't need to use SuperSU with the next version, when it comes up I'll try it out and update the thread.

 

[vayavalla]

Happy to see that you released something for or tablet.

I hope that you released also some custom ROM.

Thanks.

Enviado desde mi SM-T280 mediante Tapatalk

 

[_mone]

I've updated twrp to 3.1.0-1
Nothing major just some little changes in the device tree.. before I was using sc8830 for the board name (chip), but the actual name is SC7730SW and the platform is sc8830. This should be the definitive build until major updates in the twrp source.

 

[_mone]

Thread updated with Magisk-v12.0.
No need to flash SuperSU with this version.
SafetyNet Passed (see 1st attached picture). :good:
If you reboot and open MagiskManager straight you'll probably get "Not rooted" error (see 2nd attached picture); just close the app, wait a bit, reopen it and everything should be ok.

 

[zenful]

Can't wait to get my hands on a PC to flash my tablet, appreciate your contributions and hard work!

 

[gibbking]

Having restart problems

I added TWRP, and then successfully flashed supersu and the supersu image to the boot partition because it rebooted just fine after flashing but now when I manually restart the device it stays on the boot screen(the screen with Samsung Galaxy Tab A6 and powered by Android).

Is there an additional step I need to do to ensure that it will boot successfully or am I going to have to reboot into recovery every time now?

UPDATE: I forced a reboot into TWRP and then rebooted the system from there and it booted up just fine. It seems to be when I hold the power button once booted and select restart is when it hangs up.

 

[vayavalla]

@_mone just one question. Are you planning/trying to make a custom ROM also for tm-280?

I really hope so. Thanks

Enviado desde mi SM-T280 mediante Tapatalk

 

[_mone]

@_mone just one question. Are you planning/trying to make a custom ROM also for tm-280?

I really hope so. Thanks

Enviado desde mi SM-T280 mediante Tapatalk

Yes, I've already started.. but unfortunately I don't have much free time lately so it won't be ready soon.

 

[_mone]

Recovery updated to TWRP-3.1.1-0

twrp-3.1.1-0-_mone-gtexswifi.tar
twrp-3.1.1-0-_mone-gtexswifi.img

 

[vayavalla]

Recovery updated to TWRP-3.1.1-0

twrp-3.1.1-0-_mone-gtexswifi.tar
twrp-3.1.1-0-_mone-gtexswifi.img

Great to see some movement here!?

How is it going? Did you have any advance building ROM?

Just curiosity, take your time. Hope you can do it.

 

[_mone]

Great to see some movement here!

How is it going? Did you have any advance building ROM?

Just curiosity, take your time. Hope you can do it.

I am able to compile a LineageOS 13.0 build but it doesn't boot for now.. as I said before I don't have much free time lately.. I have more than one project going on but when I'll work again on this-one (custom ROM for the T280) and make some progress I'll let you know.
Device tree and kernel are on my github account.. so everybody is more than welcome to fork, clone, or push changes to it.

 

[zenful]

CTS profile mismatch on SafetyNet check.
Using Magiskv12 only, no SuperSU, clean install.
Let me know what you need if I can help.

 

[ttaidapos]

I am able to compile a LineageOS 13.0 build but it doesn't boot for now.. as I said before I don't have much free time lately.. I have more than one project going on but when I'll work again on this-one (custom ROM for the T280) and make some progress I'll let you know.
Device tree and kernel are on my github account.. so everybody is more than welcome to fork, clone, or push changes to it.

This is awesome! Can you re-purpose anything from the Tinker ROM?

 

[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?

 

[zenful]

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?

Is your firmware build T280XXU0AQA4?

 

[sssscary]

T280XXU0AQA4, yes that is correct. From sammobile. Thanks for replying.

 

[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?

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: