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TWRP - ROOT - WETAmod for SM-T295 (Tab A 8.0 2019)[Updated 16 August 2021]

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Fusseldieb

Senior Member
Jul 27, 2013
288
368
25
Anápolis
Did you succeed to install any GSI on this tablet?

I'm now 3 days on this and haven't succeded. It bootloops within the bootloader and doesn't get past.

I tried downloading all stock 9.0, flashing the 4-part FW, tried an older GSI which is Android 10.0 (aonly), flashing magisk to patch the boot image, fiddled with different bootloaders, installed fix_vendor on top, vbmeta and everything you can think of.

TWRP I can install everytime, it flashes the GSI images and succeeds, but that's where the fun ends - everytime...

Also, as soon as everything is stock, it always boots, even with TWRP, but as soon as I put a GSI, it dies.

Can someone give me good news? Pretty please?
 
Did you succeed to install any GSI on this tablet?

I'm now 3 days on this and haven't succeded. It bootloops within the bootloader and doesn't get past.

I tried downloading all stock 9.0, flashing the 4-part FW, tried an older GSI which is Android 10.0 (aonly), flashing magisk to patch the boot image, fiddled with different bootloaders, installed fix_vendor on top, vbmeta and everything you can think of.

TWRP I can install everytime, it flashes the GSI images and succeeds, but that's where the fun ends - everytime...

Also, as soon as everything is stock, it always boots, even with TWRP, but as soon as I put a GSI, it dies.

Can someone give me good news? Pretty please?
If I remember correctly, you must boot right back into recovery after you flash twrp else it won't stick and it can be tricky
 

dragth

Member
Apr 16, 2017
24
1
th
If GSI dont work it is a false positive.
T295 compatibility was added by Ryzen5-3600 (github user).
IMO user is also xda but not commenting.
 

dragth

Member
Apr 16, 2017
24
1
th
Basis:
-- No Magisk involved
-- Stock unrooted T295XXS4CUG4_O11 with modded BL_T295XXS4CUG4_OS9 by @Talich52
-- Twrp 3.5.2 and multidisabler-samsung-3.1 by Talich52
-- Gsi image system-roar-arm64-ab-floss.img.xz
Howto:
-- Unlock bootloader
-- Odin-flash AP (Twrp) together with BL (modded) + CP + CSC
-- Reboot into Twrp
---- Flash multidisabler
---- Full wipe
---- FormatDATA=yes
---- Install Gsi image
Note:
I didnt expect GSI_11 to boot on a stock_OS9 bootloader.
I tested out of curiosity and might missed some step(s) but the basic is there.
Let me know.
 

gcrutchr

Senior Member
Jun 11, 2009
1,165
554
71
Bangkok
Basis:
-- No Magisk involved
-- Stock unrooted T295XXS4CUG4_O11 with modded BL_T295XXS4CUG4_OS9 by @Talich52
-- Twrp 3.5.2 and multidisabler-samsung-3.1 by Talich52
-- Gsi image system-roar-arm64-ab-floss.img.xz
Howto:
-- Unlock bootloader
-- Odin-flash AP (Twrp) together with BL (modded) + CP + CSC
-- Reboot into Twrp
---- Flash multidisabler
---- Full wipe
---- FormatDATA=yes
---- Install Gsi image
Note:
I didnt expect GSI_11 to boot on a stock_OS9 bootloader.
I tested out of curiosity and might missed some step(s) but the basic is there.
Let me know.
Thanks, will try it later
Update: Works!! Thanks!
 
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  • 1
    If GSI dont work it is a false positive.
    T295 compatibility was added by Ryzen5-3600 (github user).
    IMO user is also xda but not commenting.
    Please give me link to gsi. I would like to try the install
    1
    Basis:
    -- No Magisk involved
    -- Stock unrooted T295XXS4CUG4_O11 with modded BL_T295XXS4CUG4_OS9 by @Talich52
    -- Twrp 3.5.2 and multidisabler-samsung-3.1 by Talich52
    -- Gsi image system-roar-arm64-ab-floss.img.xz
    Howto:
    -- Unlock bootloader
    -- Odin-flash AP (Twrp) together with BL (modded) + CP + CSC
    -- Reboot into Twrp
    ---- Flash multidisabler
    ---- Full wipe
    ---- FormatDATA=yes
    ---- Install Gsi image
    Note:
    I didnt expect GSI_11 to boot on a stock_OS9 bootloader.
    I tested out of curiosity and might missed some step(s) but the basic is there.
    Let me know.
    Thanks, will try it later
    Update: Works!! Thanks!
  • 2
    I see people still trying to patch files to get root.

    If you flash the TWRP posted by @Talich52, with reboot unchecked you can install Magisk from TWRP.

    Tested on T295XXU3BUC3 ROM (Android 10)

    PREREQUISITES:

    Bootloader unlocked - search forums.xda-developers for instructions how to do this.

    OEM unlock on. In Settings/developer options, OEM Unlock slider should be to the right.

    INSTRUCTIONS:

    1. If prerequisites met: install Android 9 bootloader through ODIN (See attachement: Unzip BL*.zip FIRST)
    If on Android 9, go to step 3.

    2. Reboot to system

    3. Go into download mode.

    4. Open ODIN and in the AP slot put TWRP (see attachment below) (Unzip FIRST)

    5. Uncheck auto reboot

    6. Flash TWRP

    7. Press vol dn + pwr keys.

    8: When screen goes blank, press vol up + pwr keys.

    9. Keep holding down both keys after reboot.

    10. Tablet will reboot again.

    11. When Samsung logo appears stop pressing pwr key.

    12. When bootloader msg appears, release vol up key, quickly press & release pwr key, and quickly press & hold vol up key until in TWRP.

    13. Install Fix_vendor_9.0.zip or Fix_vendor_10.0.zip. (Based on installed OS)
    See attached files.

    14. Clear dalvik/cache if prompted

    15. You will then format (NOT WIPE) data. Answer yes to the format prompt

    16. Clear dalvik and cache.

    17. Reboot back into recovery.

    18. Install magisk - see attached

    19. Reboot into system. System may reboot again - that's okay

    20. Enjoy!!


    WETAmod: (For Android 10 ONLY)

    I have attached a zip file which will add 3Minit Battery, alternate battery options, 3Minit Clock & Network Meter options to the status bar. There are other options inn the WETAmod package. I have tested all the options and they should all work.. Also includes reboot, download, recovery, shutdown tiles for the taskbar dropdown menu (check buttons). On the audio options page, there are instructions for installing Viper4Android - Please READ CAREFULLY.

    The original WETAmod package was developed by @Mentalmuso. He kindly allowed me to post my modified version for the SM-T295 on this forum.

    IMPORTANT:
    The WETAmod*.zip file HAS TO BE INSTALLED in Magisk Manager.

    1. At the bottom of Magisk Manager, you will what looks like a puzzle piece on the right side. Press it. (attachment MM-1.png)
    2. At the top of the Modules page, press 'Install from Storage'
    3. Find & select the WETAmod_T295_1.zip on your tablet's storage.
    4. Installation info will be displayed during install.
    5. Reboot
    6. In the Apps Drawer, launch the WETAmod app. You can browse the options from the menu

    NOTE:
    If the 3MinitBatterySettings is not downloading the battery styles, reinstall the 3MinitBatterySettings.apk. You can extract it from the WETAmod zip file.

    WETAmod_T295_BUC3.zip
    WETAmod_T295_BUC8.zip
    WETAmod_T295_BUD3.zip

    WETAmod: (For Android 11 ONLY)

    I have attached a zip file which will add 3Minit Battery, alternate battery options, 3Minit Clock & Network Meter options to the status bar. There are other options inn the WETAmod package. I have tested all the options and they should all work.. Also includes reboot, download, recovery, shutdown tiles for the taskbar drop down menu (check buttons). On the audio options page, there are instructions for installing Viper4Android - Please READ CAREFULLY.

    The original WETAmod package was developed by @mentalmuso. He kindly allowed me to post my modified version for the SM-T295 on this forum.

    IMPORTANT:
    The WETAmod*.zip file HAS TO BE INSTALLED in Magisk Manager.

    1. At the bottom of Magisk Manager, you will what looks like a puzzle piece on the right side. Press it. (attachment MM-1.png)
    2. At the top of the Modules page, press 'Install from Storage'
    3. Find & select the WETAmod_*.zip on your tablet's storage.
    4. Installation info will be displayed during install.
    5. Reboot
    6. In the Apps Drawer, launch the WETAmod app. You can browse the options from the menu

    NOTE:
    If the 3MinitBatterySettings is not downloading the battery styles, reinstall the 3MinitBatterySettings.apk. You can extract it from the WETAmod zip file.

    WETAmod_CUF7_T295.zip (Chinese ROM)
    WETAmod_CUF8_T295.zip (Russian ROM)
    WETAmod_CUG2_T295.zip (German ROM)
    WETAmod_CUG4_T295.zip (Vietnam ROM)
    1
    just got a 295, I'm downloading stock T295XXU3BUC3 now. It came with T295XXU3BTI4. I'm not taking any chances, LOL.Thanks for the share gcrutchr.
    1
    Updated the WETAmod zip file to include other battery options, 3Minit Clock, and installing Viper4Android.
    1
    EFTSU file doesn't work too, same "security check fail: boot.img" as magisk patched files did.
    1
    The T295XXU4BUD5, file name "SM-T295_T295XXU4BUD5_10_567dd.9EFT"
    Unless they extracted the correct key signature from the original files, modified TWRP, kernel with it, I do not see how they can get root on U4BUD4/5

    Also, most of the Samsung cpus on this site are Exynos