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SM-T295 - Finally rooted tablet!! (updated 19-March-2021)

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Talich52

Senior Member
Dec 24, 2010
362
183
@Talich52 I just mentioned that you said with data reset. Does that mean I have to push this Reset button? View attachment 5451707
Because I just push Start button all the times im flashing.
If Wi-Fi is not restored, then contact Samsung service. First install the stock firmware and lock the bootloader, there will be no traces of rooting...
P.S. The Reset button in ODIN to clear the windows of ODIN itself. There is a data reset procedure in the CSC part. Also reset the data from the recovery mode.
And what stock firmware is currently installed?
 
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Leugadong

Member
Nov 7, 2021
5
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If Wi-Fi is not restored, then contact Samsung service. First install the stock firmware and lock the bootloader, there will be no traces of rooting...
P.S. The Reset button in ODIN to clear the windows of ODIN itself. There is a data reset procedure in the CSC part. Also reset the data from the recovery mode.
And what stock firmware is currently installed?
Screenshot_20190101-083916_DeviceKeystring.jpg

This is the currently installed firmware, I feel this firmware is little bit laggy, the ONE UI freeze sometimes when boot up.
 

Talich52

Senior Member
Dec 24, 2010
362
183
I think this case maybe same to me
https://forum.xda-developers.com/t/...t-updated-19-march-2021.4050329/post-84088549
@jwagnervaz deleted persist partition by mistaken
but how to put back the partition, guide me please. 🙏
How did you do it? The user did this on purpose, and then asked for help.
You can restore the mmcblk0p48 & mmcblk0p61 partitions through TWRP with its built-in file manager or through adb mode at: / dev / block
P.S. But I would first unload these sections and compare with the attached ones. If it is empty, then it makes sense to restore, otherwise the problem will deepen.
 
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Talich52

Senior Member
Dec 24, 2010
362
183
View attachment 5451779
This is the currently installed firmware, I feel this firmware is little bit laggy, the ONE UI freeze sometimes when boot up.
This is an old firmware and you can install a newer one, but if you want to leave the possibility of rooting, then do not upgrade the bootloader version, that is, just do not use the BL file from the new firmware.
 
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Talich52

Senior Member
Dec 24, 2010
362
183
IS THERE A TWRP FOR VERSION T295XXU4CUF8?
TWRP version does not depend on current firmware, just find and install TWRP for T295 model.
However, the current bootloader version 4 will not allow the device to start and TWRP. This can only be done with android 9 bootloader, but it cannot be installed as version only 3, below ...
 
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RAFAEL9087

New member
Nov 30, 2021
3
0
A versão do TWRP não depende do firmware atual, apenas encontre e instale o TWRP para o modelo T295.
No entanto, a versão 4 do carregador de inicialização atual não permitirá que o dispositivo seja iniciado e TWRP. Isso só pode ser feito com o bootloader android 9, mas não pode ser instalado como versão apenas 3, abaixo ...
mine is aindroid 11, so there is no way to install twrp?
 

Talich52

Senior Member
Dec 24, 2010
362
183
mine is aindroid 11, so there is no way to install twrp?
The problem is not in android 11, but in the 4 version of the loader and now the loader of version 3 of android 9 cannot be installed.And the protection in Android loaders 10 and 11 is enhanced and does not allow you to install either a custom kernel or a custom TWRP recovery.
 

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  • 6
    I have root on my SM-T295 A8 tablet!!

    See my new post: How to Install TWRP and Root T295


    Update 19 March 2021
    Tested on T295XXU3BUC3 ROM

    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.


    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.

    1. If prerequisites met: install Android 9 bootloader through ODIN
    2. Reboot to system
    3. Go into download mode.
    4. Open ODIN and in the AP slot put TWRP (see attachment below)
    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 vol up key until in TWRP.
    13. You will then format (NOT WIPE) data. Answer yes to the format prompt
    14. Clear dalvik/cache if prompted
    15. Install Fix_vendor_9.0.zip or Fix_vendor_10.0.zip. See attached files.
    16. Clear dalvik and cache.
    17. Reboot back into recovery.
    18. Install magisk - see attached
    19. Reboot into system. May reboot again - that's okay
    20. Enjoy!!


    Updated (23 March 2020) my Tab A with XXS3ATB2 and got it rooted!!

    Attached AP.tar file is for XXU2ASL3 only.

    T295-Magisk-AP.tar

    Okay, after multiple failed attempts, I read about a method to root my T295. It did not work!! But, I decided to just use Magisk Manager on the boot.img file only. The resultant file would not flash - it will fail. The original boot.img & recovery.img files are 65,536K bytes each. I had to take the Magisk modified boot.img and overlay it onto the original boot.ing file. I did the same for the recovery.img. Then the files would flash successfully. The first thing after booting was to check Magisk Manager. It showed I have Magisk 20.3 installed. So, I tested this with Root Explorer. I did have root!!

    If you are going to try this, you need to unlock your boot loader, I think. I have not tried this with a locked bootloader.


    Basic instructions


    PLEASE READ ALL OF THIS BEFORE STARTING!! VERY IMPORTANT!!

    Here are the steps to root your tablet:
    Make a backup of you apps & data before doing this. This procedure will
    wipe all you data.

    Go to settings.
    Select software info
    Tap build number 7 times to get into developer mode
    Go back to main settings page.
    Scroll to bottom and select developer mode
    In middle of page find OEM unlocking
    Make sure slider is all the way to the right (should say allow bootloader to be unlocked)

    Unlock bootloader:
    1. turn off tablet
    2. press and hold down vol up & vol down keys together
    3. insert usb cable (should already be connected to computer)
    4. when bootloader screen appears, release all keys
    5. press and hold vol up key for 5 seconds, then release
    6. read instructions on screen to unlock bootloader (this will wipe all your data)

    After reboot, go through normal setup.

    Now for the hard part.

    You need to download the complete ROM you have installed on your Tablet.
    It will be better if you have the same ROM version as I do in post in this post (#1).
    You need to unzip the ROM so you can flash it in ODIN.

    If you are on the same ROM version as in my post #1, then you can just download my rooted files.

    Unzip my downloaded root files zip file.
    Unzip the downloaded ROM files.

    In the AP* file, you need to replace my files in the zip: boot.img, recovery.img & vbmeta.img

    Start ODIN. Select files for BL*, AP*, CSC* & CP*
    For CSC file, select HOME_CSC*
    *** Uncheck auto reboot ***

    Flash ROM.
    After flashing ROM. press vol dn + pwr key
    As soon as screen goes blank press vol up key and hold
    When get into recovery, select data wipe, then reboot
    Set up phone as you normally would.
    After setup, go to Play store and install Magisk Manager. Run Magisk Manager to see if you have root.


    Do It Yourself Instructions
    You need to do some research before doing this. This is NOT a walk you by the hand tutorial. You need to learn some things before following these instructions. Learn how to use lz4.exe. Learn how to use simg2img. Learn how to make a .tar file.



    Make a backup of you apps & data before doing this. This procedure will
    wipe all you data.

    Go to settings.
    Select software info
    Tap build number 7 times to get into developer mode
    Go back to main settings page.
    Scroll to bottom and select developer mode
    In middle of page find OEM unlocking
    Make sure slider is all the way to the right (should say allow bootloader to be unlocked)

    Unlock bootloader:
    1. turn off tablet
    2. press and hold down vol up & vol down keys together
    3. insert usb cable (should already be connected to computer)
    4. when bootloader screen appears, release all keys
    5. press and hold vol up key for 5 seconds, then release
    6. read instructions on screen to unlock bootloader (this will wipe all your data)

    After reboot, go through normal setup.

    Now for the hard part.

    You need to download the complete ROM you have installed on your Tablet.
    Extract ROM files
    Extract system.*.lz4, recovery*.lz4 and vbmeta*.lz4
    Use tar to make an AP.tar file with the 3 above files. **Search the Internet if you do not know how to use tar.
    Copy the AP.tar file to your phone. It is better to use adb push to prevent file correuption.
    Install Magisk Manager from Play store.
    Run Magisk Manager. Select install Magisk. Choose Select and Patch a file. Follow directions on screen to patch the AP.tar file.
    Once the AP.tar file has been patched, use adb to pul the file to yur computer.
    Extract the file from the AP.tar file.

    Now come the hard part:

    You cannot edit .lz4 directly. You have to decompress them. After decompressing system*, use simg2img to decompress the sparse file. Search the Internet if you do not know how to do this.

    Now we make our modified files so they will flash in ODIN.

    Instructions:
    I used hex editor neo - a windows 10 app
    I opened the stock kernel & recovery files in hex editor neo
    I opened the Magisk modified kernel & recovery files in hex editor neo
    I copied the modified kernel & recovery code onto their respective stock files in hex editor neo
    I saved the stock files & closed hex editor neo.
    I used cygwin to create a tar file: boot.img, recovery.img, vbmeta.img plus other files in original AP*.MD5 file.
    You should also flash all ROM *.MD5 files (BL, CP, CSC) per Magisk instructions.
    New AP.tar contents:
    boot.img
    dtbo.img.lz4
    meta-data
    recovery.img
    system.img.ext4.lz4
    userdata.img.ext4.lz4
    vbmeta.img
    vendor.img.ext4.lz4

    I used Odin to flash the tar file

    Flash ROM.
    After flashing ROM. press vol dn + pwr key
    As soon as screen goes blank press vol up key and hold
    When get into recovery, select data wipe, then reboot
    Set up phone as you normally would.
    After setup, go to Play store and install Magisk Manager. Run Magisk Manager to see if you have root.

    After installing Magisk:

    (Powering up normally) → (System with NO Magisk)
    (OEM Recovery Key Combo) → (Splash screen) → (Release all buttons) → (System with Magisk)
    (OEM Recovery Key Combo) → (Splash screen) → (Keep pressing volume up) → (Actual recovery)

    Please follow my instructions and the install instructions from Magisk web page.

    Magisk Installation
    3
    What system do you use to manipulate the files? (Windows? Linux? Android?)

    What is "overlay"? Do you extract the boot.img from the original AP.tar.md5, and from the magisk-patched.tar, copy the magisk-patched-boot.img to the beginning of the original-boot.img, and then replace the boot.img in magisk-patched.tar?

    Do you give Odin four files, or just AP? Do you use CSC or HOME_CSC?

    In answer to your question, basically, yes.
    I only flash the 3 files in the .tar file

    I am on a Windows 10 laptop. Only 3 files need to be modified by Magisk: boot.img, recovery.img, vbmeta.img
    I use Hex Editor Neo for overlaying the modified kernel and recovery files..
    At the end of these 2 stock files is code that needs to be there, thus the 65 MB file size.
    So I open the stock .img files (boot, recovery) in Hex Editor Neo, and copy the modded boot, recovery code into each stock .img file..
    I use cygwin to create the .tar file, then flash with ODIN 3.1.14
    3
    Many thanks for the recompiled BL file --upgrading done!
    Next step will try twrp-3.5 + magisk --for rooting rights.
    If you plan to use TWRP, then you need to disable encryption. To do this, install multidisabler and make format data-yes (no wipe data). Well, then install Magisk.zip for rooting.
    3
    mine is aindroid 11, so there is no way to install twrp?
    The problem is not in android 11, but in the 4 version of the loader and now the loader of version 3 of android 9 cannot be installed.And the protection in Android loaders 10 and 11 is enhanced and does not allow you to install either a custom kernel or a custom TWRP recovery.
    3
    Better Android 9 or Android 10 to root? Which firmware is better and faster for this device (SM-T295)?


    Are there any problems with knox for downgrade or root?
    To root 10 android, you need to install the bootloader from the previous firmware 9 android, and then the rooting itself is the same - either patch the kernel and flash, or install TWRP and root the device from it ... The TWRP option is easier, but there is some difficulty in entering TWRP after it installation ...
    On this KNOX device, cropped ...
    In particular, there is no KNOX counter, that is, you can root the device, and then flash the stock firmware and there will be no traces ...
    There is no KNOX flag as such 0x0 and 0x1 ...
    Here find the SM-T295 model: https://www.samsungknox.com/en/knox-platform/supported-devices/2.5+
    Our model does not support KNOX function ...
    There is really a KNOX Guard application in the system, but if you Disable or Remove it, the device will be locked ...
    It is not KNOX that prohibits downgrading the firmware version, but the bootloader. The version of the bootloader cannot be downgraded. From the 10th android you can return to the 9th android, since the version of the bootloader is 3 both there and there, but below you will not be able to install the firmware with versions 2 and 1 of the bootloader ...