[ROM][SM-T500] Samsung Galaxy Tab A7 10.4 (2020) - LineageOS 18.1

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Bogam

Member
Nov 15, 2021
10
0
DzbanCban said:
Then you should be able to downgrade. You could also try to install GSI ROMs, there's a guide here on XDA. :D
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Thanks, I allready downgraded. Now I'm thinking install Lineage or GSI or downgrade to Android 10 first, and then install. I think is easier to hide Magisk because of security patch date. I'm not an expert, only guessing.
 
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punteruk

Senior Member
Jan 18, 2016
126
16
Bogam said:
Awesome. TWRP shouldn't be a problem. Which crdroid image did you take?
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i've tried to use heimdall on arch linux to install TWRP but it ain't working so slight bummer :poop:
for the sm-t700 I used the luisrom for klimtwifi.......not sure what to go for on this TAB A7.....need to look at another way to get TWRP installed first :confused:
 
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lewmur

Senior Member
Apr 30, 2011
2,401
514
shorty9210 said:
Sorry I have been out of the rooting seen for a bit, but I have a issue with TWRP not letting me back up my stock rom, am I the only one having this issue, I would like to try lineage rom but don't want to have to reflash the stock rom if anything goes wrong!!
Thanks in advance
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TWRP can't backup stock because it can't handle the encrypted data partition. You have to use some other backup tool.
 
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drsanusi

Member
Nov 22, 2013
37
1
Arno_Nuehm said:
Did anybody try this TWRP recovery on T505 (the LTE version)?
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Hi mate i am here to see any progress for the same tab as u
For the recovery i used skyhawk for 500 worked fine on my tab . But crash .and i never use it again .cause i want working rom .still nothing ..i was happy for that gui .but ...thats it ....hope u have some luck
 
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Arno_Nuehm

Member
Jun 3, 2020
28
2
drsanusi said:
Hi mate i am here to see any progress for the same tab as u
For the recovery i used skyhawk for 500 worked fine on my tab . But crash .and i never use it again .cause i want working rom .still nothing ..i was happy for that gui .but ...thats it ....hope u have some luck
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Hi, you got me a bit confused there :D

Did skyhawk work or did it crash?
 
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drsanusi

Member
Nov 22, 2013
37
1
Arno_Nuehm said:
Hi, you got me a bit confused there :D

Did skyhawk work or did it crash?
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It worked very nice. But i was unable to do anything because of encryption.that time i dont have SD card i want to root at least....then ...i reboot.i stuck on bad message of unsupported file ....so. Flashed the stock ..keep visiting here to see if any rom came out
So it's working but my steps may be not the right one.. if u had luck to do it right plz give feedback.....my fault is the recovery get lost after reset.. good luck
 
DzbanCban

DzbanCban

Senior Member
Sep 18, 2021
110
42
Central Europe
Project Treble
Samsung Galaxy S20 FE
drsanusi said:
It worked very nice. But i was unable to do anything because of encryption.that time i dont have SD card i want to root at least....then ...i reboot.i stuck on bad message of unsupported file ....so. Flashed the stock ..keep visiting here to see if any rom came out
So it's working but my steps may be not the right one.. if u had luck to do it right plz give feedback.....my fault is the recovery get lost after reset.. good luck
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Good to know you got it to work!

The fix for the recovery getting lost after reseting is to flash Samsung Multidisabler (you can find it on XDA).
 
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    agreenbhm
    Update: March 24 2022: This ROM has been retired and a new one based on LOS 19.1 (and TWRP based on Android 11) have taken its place. New thread here: https://forum.xda-developers.com/t/...4-2020-lineageos-19-1-and-twrp-3-6-1.4421365/
    ---
    Update 9:46am EST July 15 2021: new builds of TWRP and LineageOS with TWRP touch fixed and LOS w/ space for Gapps is now live.

    WARNING: USE AT YOUR OWN RISK.

    I have successfully ported TWRP and Lineage OS 18.1 to the Samsung Galaxy Tab A7 10.4 (2020), aka SM-T500. This is my first time porting TWRP or LOS, so there may be issues unknown about at this time. Thus far, the only known issue is that the touchscreen in TWRP does not work. This can be worked around by using a USB mouse and/or accessing the device via ADB.

    Here are the steps to follow:
    1. Update your device to the latest stock ROM (as of this writing) either using the built-in system updater or via Odin. You want the build that ends with "3BUF3".
    2. Unlock device bootloader using instructions from other threads. This will wipe your device.
    3. Boot into download mode and flash "vbmeta_disabled_R.tar" via Odin in the "Userdata" slot to disable verified boot. This will wipe your device again.
    4. Boot device back into download mode and flash TWRP via Odin in the "AP" slot. If you boot up into the stock ROM rather than booting directly back into download mode then go through the initial setup process of the stock ROM and enable developer tools and ensure OEM Unlocking is still enabled (VaultKeeper can possibly undo OEM Unlocking if you get to the ROM but don't go into Developer Tools and view OEM Unlocking is enabled, so make sure to do this).
    5. Boot device into TWRP (recovery mode) and format (not wipe) your data partition. Then reboot back into TWRP.
    6. Push LineageOS (super.new.ext4.img) to device. Ideally push it to an SD card formatted with ExFat or EXT2/3/4 (FAT/FAT16/FAT32/VFAT won't work due to file-size limitations).
    7. Install LineageOS image to "Super" partition. Make sure to select "Install from Image" in order to show .img files in the install selector screen.
    8. (Optional) Push NikGapps Omni to your device and install the zip. Make sure you include a "nikgapps.config" file in your "/tmp" folder that is configured to install to "system" rather than "product" or "default".
    9. Reboot to system. You should now be in LOS with Gapps.
    10. (Optional, but recommended): Install Magisk via TWRP
    11. (Optional, but recommended): Run fix script to fix brightness slider not working and to make Magisk work. If you didn't install Magisk but only want the brightness fix, just enter "n" when prompted in the script. To run the script:
      1. NOTE: Script has .txt file extension to allow hosting on AFH. Remove that so it's just .sh to match the instructions below.
      2. Download and push to device when booted into TWRP
        1. adb push sm-t500_fixes.sh /tmp
      3. Enter an adb shell
        1. adb shell
      4. Change directories and set permissions
        1. cd /tmp
        2. chmod +x /tmp/sm-t500_fixes.sh
      5. Run script
        1. /tmp/sm-t500_fixes.sh

    Tips:
    • If you are not seeing all of your storage space in the OS on the internal flash, boot to TWRP and format data.
    • Flash TWRP via "AP" slot and flash VBMeta_Disabler via "Userdata" slot in Odin.
    • Flash LineageOS as an Image, not as a Zip.
    • For Gapps, use the latest NikGapps for ARM64 and Android 11/R.
    • For Gapps, make sure you install to the System partition and not Product. To do this you need to slightly modify a nikgapps.config file. Instructions on that can be found on the NikGapps site.

    Downloads:
    Known Issues:
    • OS-encrypted storage (Internal Data) not able to be decrypted in TWRP.
    • Brightness controls don't work: Fixed via "sm-t500_fixes.sh script.
    • TWRP touch screen doesn't work (use USB keyboard or adb). Should be fixed with TWRP Beta 3.
    • TWRP formatting external SD card may hardbrick device. Do not do this! Fixed with TWRP Beta 2.

    Source (device tree for TWRP from my Github): https://github.com/agreenbhm/android_device_samsung_gta4lwifi
    Source (kernel sources from Samsung): https://opensource.samsung.com/uploadSearch?searchValue=Sm-t500#
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    7
    A
    agreenbhm
    Good news, my tablet should be back on Tuesday and I will be looking at continuing my dev work then.
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    3
    L
    lewmur
    agreenbhm said:
    I have successfully ported TWRP and Lineage OS 18.1 to the Samsung Galaxy Tab A7 10.4 (2020), aka SM-T500. This is my first time porting TWRP or LOS, so there may be issues unknown about at this time. Thus far, the only known issue is that the touchscreen in TWRP does not work. This can be worked around by using a USB mouse and/or accessing the device via ADB.

    Here are the rough steps to follow:
    1. Unlock device bootloader using instructions from other threads.
    2. Patch stock ROM (AP) using Magisk, then flash rooted ROM. Will likely need to wipe device after this.
    3. Boot into rooted ROM and ensure "OEM Unlocking" is still enabled in "Developer Tools".
    4. Boot back into download mode and flash "vbmeta_disabled_R.tar" to disable verified boot.
    5. Boot device back into rooted stock ROM to ensure things are still functional (may require a device wipe at this step).
    6. Boot device into download mode and use ODIN to flash TWRP recovery.tar file via "AP" slot.
    7. Boot device into TWRP to verify functionality (hold Vol-Up + Power during boot).
    8. Access TWRP via adb using "adb shell" or with USB mouse (touch functionality currently not working).
    9. Format data partition on device.
      • Via ADB shell: twrp format data
      • Via USB mouse: Wipe -> Advanced -> Format Data
    10. Boot device into download mode.
      • Via ADB shell: twrp reboot download
      • Via USB mouse: Reboot -> Download
    11. Flash LineageOS tar file via ODIN using the "AP" slot.
    12. If device boots into TWRP after flashing LineageOS, use USB mouse to select: Reboot -> System
    13. Device should boot and stall for ~1m at the Samsung logo screen with red text below, then should go blank and then display LineageOS boot image.

    Downloads:
    Click to expand...
    Click to collapse
    Great news!! But I think you need to post it in the ROMs, Kernels, Recover thread.
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    3
    A
    agreenbhm
    Hello all, I have released a version of LineageOS 19.1 for the SM-T500. You can find it here: https://forum.xda-developers.com/t/...4-2020-lineageos-19-1-and-twrp-3-6-1.4421365/

    And a quick note since I see the discussion here: the ROM from this thread and the new one are both from GSIs. All you need to do to update is technically flash your system partition with a GSI of your choosing. Easier said than done, but the easiest approach I've found for this device is to build a new super partition with lpmake consisting of odm, product, vendor, and system (with system being the GSI).
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    3
    A
    agreenbhm
    wesleyvanneck12345678 said:
    Any new release of twrp
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    I made a new build yesterday however I can't test it yet since my device is not back to me yet. If you want a copy to try dm me and I will share it. But be warned, I don't even know if it boots (though you could always reflash the old one if that's the case). The goal of the new build was to fix the SD card bug and make the touchscreen work.
    View

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