[ROM][SM-T500] Samsung Galaxy Tab A7 10.4 (2020) - LineageOS 19.1 (and TWRP 3.6.1)

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lewmur

Senior Member
Apr 30, 2011
2,332
504
Is anyone else have issues with getting the sdcard setting up as internal storage!!! It pops up some sort of java error , thanks in advance!!!
That's because using an SD card for internal storage is a very bad idea. Since internal memory technology solders the memory chips directly on top of the SoC chip, it has become many times faster than the SD bus. Therefore, using the SD card as internal storage drastically slows down the device. I know you say, "But the tablet doesn't have enough internal storage for my games or 4k movies." That is because these tablets are budget priced and not meant to be used for those purposes.
 

Shadow128

Senior Member
Nov 8, 2010
256
21
Hi there

I bought a SM-T500 some days ago and flashed this LineageOS-Version which seems to work really good.

But it is possible to customize the bottom navigation bar like old android versions (removing the short cut symbols and put the three navigation buttons to the middle)?
Normally I'm using Nova Launcher and it is not possible to modify the used navigation bar.
Or is there a better launcher which supports that function?

Thanks for your help :)
 

malk1101

Member
Jan 5, 2017
10
0
Hi.
I not ussually flash devices but i want to install this rom in my SM-T500.
my doubt is about the VB Meta Disabler.
The VB Meta Disabler flashed with ODIN goes over AP?
Thanks.
 
Hi.
I not ussually flash devices but i want to install this rom in my SM-T500.
my doubt is about the VB Meta Disabler.
The VB Meta Disabler flashed with ODIN goes over AP?
Thanks.

No need stop using the vbmeta disabler Magisk has it built in, cracks APIs and safteynet to pass the security checks with modules and the correct setup i have confirmed it works, if bee through endless bricks and start over from Los19.1 all they way back to flashing back to stock back to patched magsik to Los19.1and so forth and haven't needed to flash it, trying to get kernel to Los19.1 with the latest stock installed🤦‍♂️🤦‍♂️:alien::alien:, p.s I don't recommend trying to start with the newest stock FW and fighting twrp to quit throwing errors at me for like the last 12 hours. but ill plan on doing a noob guide over everything new I find well the best i can. but with that said in the meantime ill posts the links that helped me get this far and the files you will need!!! as well really the only two files you might need would be the multidisabler and the blankvbmeta but so far they really haven't helped me much, and i recommend uninstalling the 7 Knox apps ( I used luckypatcher.apk, but titanium backup should do the trick as well) and delete the Knox folder in the recovery file manager

This is a good read, lots of good information
https://forum.xda-developers.com/t/discussion-magisk-the-age-of-zygisk.4393877/

possibly not needed due to the safetynetfix
https://github.com/Magisk-Modules-Repo/MagiskHidePropsConf/releases

to see if you pass safetynet
https://github.com/RikkaW/YASNAC/tree/master#yasnac

safetynet info
https://github.com/kdrag0n/safetynet-fix

to see if you pass api checks
https://github.com/1nikolas/play-integrity-checker-app

and I personally need to give a BIG thanks to v0latyle, the links below this is his XDA, and two of his posts that helped me get it done and stopped me from ripping my hair out!! so thank you v0latyle I defiantly owe you a coffee
For these two posts there for the pixel 6 so only follow the steps for Magisk but updated with lastest, the API secirty checks and Safetynet
https://forum.xda-developers.com/t/closed-firmware-is-out-get-your-root-on.4353565/

https://forum.xda-developers.com/t/...ootloader-update-root-pass-safetynet.4356231/

hope it helps someone, AS WELL HOPE EVEYONES DAY HAS BEEN WONDERFUL AND HAPPY THANKSGIVING!!! feel free to reach out with any questions!! have fun rooting and getting to ware you want to get with your device!!
 

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cappuccini

Senior Member
Nov 16, 2022
128
26
This ROM is still beta, updates don't seem to follow anymore. Why should anyone install this ROM?

P.S. Currently I'm on stock Android 12, rooted and debloated it and I'm very happy with it :)
 

Tirofog

Senior Member
Dec 6, 2011
459
124
This ROM is still beta, updates don't seem to follow anymore. Why should anyone install this ROM?

P.S. Currently I'm on stock Android 12, rooted and debloated it and I'm very happy with it :)
After a couple of tweaks I got the pixel experience GSI working well, really pleased with the result 😁
Also regular updates without losing data..
 

cappuccini

Senior Member
Nov 16, 2022
128
26
After a couple of tweaks I got the pixel experience GSI working well, really pleased with the result 😁
Also regular updates without losing data..
Thanks for your answer! I have looked again at the whole process incl. the updates and slowly I understand the procedure.
Since many members had difficulties with the installation, the risk is too big for me and hope for a LineageOS Official Android 13 version 😉
 

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  • 1
    the work for me, i have the t500 but used the t505 pixel experience forum
    link?
    1
    I want to load Lineage 19.1 on my SM-T500 tablet, but it has been using the stock rom with the latest firmware T500XXS4CVJ1 using bootloader 4. ODIN won't let me downgrade to firmware T500XXU3BVB3, with bootloader 3. I started with my T500XXS4CVJ1 firmware, and loaded the LineageOS 19.1 Beta2 as described. No issues loading it, but the Wifi isn't working as many have noted. Loading later versions of Andy Yan's GSI didn't fix the issue.

    Is anybody working on a Lineage 19.1 ROM starting with a bootloader 4 firmware? A way to downgrade to the previous bootloader version firmware?

    I have another SM-T500 tablet modified back when I had the T500XXU3BVB3 firmware, and I like it. (It is nice to have a Wifi tablet with working Wifi!)

    Did you manage to fix the wifi issue by any chance? My tab's on the same firmware atm. Your issue report is (gladly) holding me back from even trying lol.
    1
    Did you manage to fix the wifi issue by any chance? My tab's on the same firmware atm. Your issue report is (gladly) holding me back from even trying lol.
    https://forum.xda-developers.com/t/...ashing-guide-updated-android-13-gsis.4423297/ it should work with this tutorial https://github.com/ponces/treble_build_pe and this gsi
    this is ment for the t505 but also works normally on t500.
  • 16
    Hello world, I have successfully built LineageOS 19.1 with Gapps for the SM-T500 (Tab A7 10.4 2020) using Andy Yan's LOS GSIs. Lineage is current as of 3/24/2022. I have also compiled TWRP version 3.6.1, based on Android 11 (previous release was Android 10-based). I have attempted to make this install as painless as possible. Please read the notes below carefully. WARNING: you are responsible for your own actions, so please be careful. If you brick something, that's on you.
    1. Update to latest stock ROM as of 3/24/2022 (T500XXU3BVB3).
    2. Unlock bootloader using steps described in this thread. Make sure that after your device wipes and reboots after the bootloader is unlocked that you go through the setup wizard again and back into Developer Settings and enable OEM Unlocking. I think you need to connect to wifi for this option to appear, so if you don't see it try that.
    3. Boot to download mode, then install VBMeta Disabler via Odin.
    4. Reboot to download mode, then install TWRP via Odin.
    5. Reboot to download mode again, then install LineageOS via Odin.
    6. Boot to TWRP, push "fix_brightness.sh" to the device and run it, then format data.
    That should be all that is necessary. If you get stuck in a loop with TWRP where you can't boot to system (seems to happen regularly to me) I included a script in TWRP that should get you out. From the TWRP cli run the command "exit_twrp". It will say "out of space" when finished (instantly). Then reboot to system. If for some reason that still doesn't work and you boot back to TWRP, repeat.

    Known Issues:
    • OS-encrypted storage (Internal Data) not able to be decrypted in TWRP.
    • TWRP touchscreen seems to be unresponsive for several seconds upon first booting into TWRP. Just patiently wait a few seconds and try again.
    • You'll see errors in TWRP about /keyrefuge, etc. Ignore that. I believe it's related to the inability to decrypt internal storage using FBE.
    • Installing Gapps (Nik and Flame) doesn't work, but no worry because the ROM includes Gapps :)
    • Security: by default this ROM has root access and USB debugging (adb) is enabled unsecured. Anyone can plug into it and have full root access. So disable USB debugging if you don't want that! TWRP is the same way, though data is encrypted. Someone could install malware into your system partition though. In short, this is for hobbyists, not someone with security concerns.
    Sources:
    Files:
    Updates:
    • You can update this ROM yourself by installing a new GSI to the system partition.
      • Download new GSI from here onto Micro SD card: https://sourceforge.net/projects/andyyan-gsi/files/lineage-19.x/
      • Boot into TWRP
      • Run command: blockdev --setrw /dev/block/mapper/system
      • Run command: dd if=/external_sd/<your_downloaded_gsi.img> of=/dev/block/mapper/system bs=1M
      • Wait for dd command to finish, then reboot into system. Don't forget to use "exit_twrp" command if you keep booting into TWRP.
    4
    First time flashing Samsung, first time using heimdall instead of Odin in Archlinux. These are the steps I switched from Odin following the instructions from https://forum.xda-developers.com/m/agreenbhm.2655703/ on the first post in this thread https://forum.xda-developers.com/t/...eos-19-1-and-twrp-3-6-1.4421365/post-86632267 :

    #Installed Heimdall from AUR
    Install with AUR package manager of choice https://aur.archlinux.org/packages/heimdall-git
    ###Flash Untarred vbmeta_disabled_R.tar
    heimdall flash --VBMETA vbmeta.img --no-reboot
    ###Flash untarred TWRP
    heimdall flash --RECOVERY recovery.img
    ###Flash untarred and unlz4ed LineageOS
    heimdall flash --SUPER super.img
    ###Rebooted into TWRP
    adb push fix_brightness.sh /
    adb shell
    chmod +x fix_brightness.sh
    ./fix_brightness.sh
    ###Format Data in TWRP
    ###Reboot System in TWRP
    Kept rebooting into TWRP
    adb shell
    exit_twrp


    Worked well except the reported WiFI problem. XSA (Australia) variant.

    Tried following agreenbhm's instructions from https://forum.xda-developers.com/t/...eos-19-1-and-twrp-3-6-1.4421365/post-86693825

    #check for last version of stock firmware
    samloader -m SM-T500 -r XSA checkupdate
    #Download last version of stock firmware
    samloader -m SM-T500 -r XSA download -v T500XXU3BVB4/T500OLM3BVB4/T500XXU3BVB4/T500XXU3BVB4 -O .
    #Unencrypt it
    samloader -m SM-T500 -r XSA decrypt -v T500XXU3BVB4/T500OLM3BVB4/T500XXU3BVB4/T500XXU3BVB4 -V 4 -i SM-T500_1_20220304080951_2k076a7d3v_fac.zip.enc4 -o SM-T500_1_20220304080951_2k076a7d3v_fac.zip
    #Unzip
    unzip SM-T500_1_20220304080951_2k076a7d3v_fac.zip
    #Used Odin3 to flash
    BL -> BL_T500XXU3BVB4_CL23447145_QB49681114_REV00_user_low_ship_MULTI_CERT.tar.md5
    AP -> AP_T500XXU3BVB4_CL23447145_QB49681114_REV00_user_low_ship_MULTI_CERT_meta_RKEY_OS11.tar.md5
    CSC -> CSC_OMC_OLM_T500OLM3BVB4_CL23447145_QB49681114_REV00_user_low_ship_MULTI_CERT.tar.md5

    *Checks WiFi, it works.

    #Download Mode
    heimdall flash --VBMETA vbmeta_disabled_R.img
    #Reboot Download Mode
    heimdall flash --RECOVERY recovery.img
    #Boot into TWRP
    adb shell
    blockdev --setrw /dev/block/mapper/system
    dd if=/external_sd/lineage-19.1-20220320-UNOFFICIAL-arm64_bgS-vndklite.img of=/dev/block/mapper/system bs=1M
    #Reboot system
    Stuck rebooting in TWRP
    There is no exit_twrp anymore
    adb shell
    dd if=/dev/zero of=/dev/block/by-name/misc
    #Reboot system

    *Still reboot loops into TWRP
    When I wipe dalvik, data and cache. I get errors:
    Failed to mount /keydata (invalid argument)
    Failed to mount /keyrefuge (invalid argument)

    #Enter TWRP
    Format Data
    adb shell
    dd if=/dev/zero of=/dev/block/by-name/misc
    #Reboot System
    #Fix Brightness
    adb reboot recovery
    adb push fix_brightness.sh /
    adb shell
    chmod +x fix_brightness.sh
    ./fix_brightness.sh
    #Reboot System


    Boots into Lineage and WiFi works!
    Thanks agreenbhm!
    3
    I want to load Lineage 19.1 on my SM-T500 tablet, but it has been using the stock rom with the latest firmware T500XXS4CVJ1 using bootloader 4. ODIN won't let me downgrade to firmware T500XXU3BVB3, with bootloader 3. I started with my T500XXS4CVJ1 firmware, and loaded the LineageOS 19.1 Beta2 as described. No issues loading it, but the Wifi isn't working as many have noted. Loading later versions of Andy Yan's GSI didn't fix the issue.

    Is anybody working on a Lineage 19.1 ROM starting with a bootloader 4 firmware? A way to downgrade to the previous bootloader version firmware?

    I have another SM-T500 tablet modified back when I had the T500XXU3BVB3 firmware, and I like it. (It is nice to have a Wifi tablet with working Wifi!)
    2
    Then yes vbmeta flahed on userdata odin ..here once was successful.then another attempt red notice appear only official files can be flashed (vbmeta)....this way.

    I remember in my attempt on Skyhawk recovery. Flashed both vbmeta and recovery one sitting in ap for recovery userdata for vbmeta..then press conbination buttons power off volume up volume down all together 😁😁😁. And. Da da .wowo i am in eecovery working fine .
    So my reading on flashing are different methods i get lost . What is the proper one .
    🤔🤔🤔
    Firsh of all, what worked on one install, won't work on another. I depends on what the DEV included in their tar. Some include vbmeta and recovery in their ROM. This one doesn't. You have to start from stock, FACTORY RESET, flash vbmeta, FACTORY RESET, and then flash TWRP.
    And each time connect wifi and enable DEV mode.
    2
    I'm having problems with the wifi, i can't turn it on, it's normal?