[Samsung Galaxy Tab A series ROMs, Kernels, Recover] System23:
So to Say i know the Reboot Issue, i do following i connect it to PC and do over adb reboot the first command , after that the Display goes off, than i press power and the Display goes on!!! in Terminal i cancel the adb reboot command, and now i typ the adb reboot command again, and wolla the the device Reboots quickly!!! why you dont use Magisk Modules/XPosed/EXKernelManager App to Enhance your System with the nessesary Tweaks/Optimations/Settings/Mods do you want, that works perfectly , only what you must do is to search what is availibile for what you would do!!! too your Tab S8 dont Flash anything before you not have Downloaded the STOCKROM from SAMFW.com/Sammobile.com then its a not so good Supportet Device, but you can Flash all GSI arm64 versions they you found, so you have a great spectrum for Testing etc... on sourceforge.com you must only look if your Device has only A or A/B Partition settings, i have not read but i think is a only A Partition Device!!! The worst thing that can happen to you is that the device doesn't start after the factory reset or you have a bootloop, that's the reason for the STOCKROM which you then need to fix!!! Depending on how extensively you try out GSI ROMs, you will experience this more often!!!!

But when you would Testing i have a Tip for you, LineageOS 21 GSI its really new in Testing Section, and on my S22 the SIM Cards wouldnt detect but it is a nice Try to Test it out!!! and i mean 4 your Tab S8!!!!

lineage-21.0-20231124-UNOFFICIAL-gsi_arm64_vS-personal.img.xz

have a Nice Day

MFG

Steven

UPDATE SRY

and another small but valuable tip for you for your Tab S8, flash the STOCKROM on it and root the system with Magisk!!! Then you flash this "module_DSU_Sideloader-gsid.zip" in the Magisk Manager under Modules, then you have the DSUSideloader on the device with the associated APP!!! Start this APP and grant it root rights, create a folder in /sdcard called DSU and select it!!! One more confirmation and the APP is ready to use!!! But now first copy the GSI image you want in img format/zip/tar/etc.. onto your device in the folder /sdcard/DSU!!! Once this is done, you can switch to the DSUSideloader APP again and select a GSI image in the upper field the folder /sdcard/DSU, that would be step number 1, then if you want to give this system any user data partition size depending on the memory, if you don't select that it will automatically be 2GB user data in the 2nd Android system!!! And you don't need to set the size of the GSI image. It's always left out!!! Now you can tap on the setup button above and wait until the process is completed!!! You will then be shown that it is finished!!!! Now comes the nicest thing: I think there is now a message in the system's status bar that says the device can be restarted!!!! Attention, if you type this you will automatically start in the GSI system you have just created, then it will show whether it works and starts, if so Welcome to your 2nd operating system, which of course also shows in the status bar that it is ready to restart. If you tap on it you will automatically start back into the STOCKROM!!!! and that's the ingenious DUALBOOT only if you tap restart in the notification you can change the ROMs as you like!!!! If a GSI ROM doesn't work, simply discard the notification and it will be deleted without any traces, and you can try another GSI ROM!!!! AND ALL WITHOUT DAMAGE THE STOCKROM, NOTHING BAD CAN HAPPEN 100% SAVE METHOD!!!! BUT YOUR DEVICE MUST SUPPORT DYNAMIC PARTITIONS THAT IS A REQUIREMENT!!

You can Test it out with LineageOS 21 xD

UPDATE SRY

Its Necssesary to give you that

1# TrebleCheck APK

-Shows Device/System Information so like Support your Device DynamicPartitions, when Not DSUSideloader wouldnt work than you must use a other Flashing Method

-than Notice that if your Device is a A only or A/B Partitions Type

-short you Find all Infos they you need for Future selecting GSI ROMs

2# module_DSU_Sideloader-gsid.zip Magisk_modul

-Add a specially Version of the DSU System existing in DeveloperOptions Since Android 11

3#

I never want to hear you say again for the Tab S8, unfortunately there is no one like Magendanz, look on the LineageOS 21 link and take a look at this database from AndyYan, there you will find all existing LineageOS releases in GSI form since 2019 and also updated monthly! !! Here you go, I was happy to tell you, because great things deserve it, and Step 1# is that what you need in the World of GSI Releases and the different Builds, so look at the Info at Bottom!!!

Here the Files to Download!!!

TrebleCheck_and_DSU_Magisk_Module

{arm|a64|arm64}_{a|b}{v|g}{N|S}-{vndklite|secure|personal}

| | | | |

| | | | vndklite: For VNDKLite devices,

| | | | or for read-writeable /system on regular devices

| | | | secure: Superuser removed and system props spoofed,

| | | | for better chances of passing SafetyNet

| | | | personal: With personal mods, for reference

| | | |

| | | N: No Superuser

| | | S: *Built* with PHH Superuser (app needed)

| | | (Z): *Built* with eremitein's Dynamic Superuser (not offered here)

| | |

| | v: Vanilla, i.e. no GAPPS

| | g: With regular GAPPS

| | o: With Android Go GAPPS

| | (f): With built-in MicroG and FLOSS replacements of GAPPS (not offered here)

| |

| a: "A-only", i.e. system-as-system (deprecated since Android 12)

| b: "AB", i.e. system-as-root

|

arm: ARM 32-bit (deprecated since Android 12)

a64: ARM 32-bit with 64-bit binder

arm64: ARM 64-bit

And thats not All but it is the Beginning of your Jurney with GSI, and you have more than enought different Developers and GSI ROMs, take a look at these 3 Websites of GSI CustomROMs, your choice, what you will download and Flash on your device xD

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