[Samsung Galaxy Tab S8] System23:
UPDATE

Magisk Module DSUSIDELOADER has only API33 as Maximum, Also worked for Android 13

4 Android 14 you must only use the Attached APP, and without SystemMOD you must use

adb after Install GSI with the Following command

adb shell sh "/storage/emulated/0/Android/data/vegabobo.dsusideloader/files/install"

than it starts Notification Setup!! But this is shown in App Notification

Hi,

I would like to show you an alternative way of using the variety of GSI CustomROMs on your devices in the so-called DUALBOOT without custom recovery, and without causing any damage, it is a procedure that has been integrated since Android 11 and has survived the years in the development settings has, this specially modified and adapted software implements this in no time at all, so that even users without much experience can do it and use it!!!!

First of all, we have certain requirements that we have to work through first, which include an unlocked bootloader, a system rooted with Magisk so that we can flash modules, then it's up to the information collection that gives us information about Project Treble / GSI support and compactability!!! So I only found a single post at google that points out that the device supports “dynamic partitions” and that is fundamentally necessary!!!! Otherwise I could save myself these instructions!!!!

1# Unlock/Unlocked Bootloader

2# Magisk ROOTED Android System

3# Install TrebleCheck APK to Collect SystemInformations

(Please POST a Screenshot of this Informations)

Download APK Here

TrebleCheck APK

4# create on Device in /sdcard Folder DSU

5# Now we Flash a Magisk Module "module_DSU_Sideloader-gsid.zip"

Download ZIP Here

VENGABOBO DSUSideloader modul

6# Now we reboot the Device, and read a littlebit Informations over

GSI Builds and what they stand for,than thats necssessary for

the Future with GSI CustomROMs to understand wich Build can

you download and not!!! After that we start first with Download

the GSI Image!!!!

Naming rules

{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

7# So now we have many Developers also differrnt CustomROMs with its differrent Modifications!!!

Here is the Database from AndyYans GSI,they exist since 2019 with

Actually LineageOS Builds so that he is a experienced developer, nice to try you xD

https://sourceforge.net/projects/andyyan-gsi/files/

when we search on sourceforge.net than we Found 3 Sites with GSI CustomROMs, so feel Free

to Test it Out and Download it to run it on your Device or Not (Not every GSI works xD)

https://sourceforge.net/directory/gsis/

########################################################################

So thats Now over 100 GSI CustomROMs,also Enought to find a Good one!!!!

########################################################################

So now we would Download one or booth of these 2 GSIs with Android 14

LineageOS 21 arm64

https://sourceforge.net/projects/an...UNOFFICIAL-arm64_bgN-personal.img.xz/download

Google Android 14 Beta

https://dl.google.com/developers/an...m64-exp-U1B2.230922.006-10879723-964eb315.zip

This Releases comes from the Testing Sections, and come and try too!!!

8# After we have Finished Downloading, we copy the Files to Device in Folder /sdcard/DSU (equal wich Archive xz,gz,zip,tar)

9# Now we look on Device for an APP "DSUSideloader" and Run It

Setting Up the 3 Steps 1 Root privilegs, 2 select Folder /sdcard/DSU, 3 Confirm and Proceed

After that we can choose in Top a GSI ROM from DSU Folder, so select one of them!!!

Than can we Set the Storage Size of userdata in Second System, leave untuched than Automaticlly Sets to 2GB

The 3th Option we not Need!!!

Now Typ on Setup, and wait if its Finished!!!

10# After Finish we become a Short Info and description about, now we can See in the

Statusbar Notification a Dynamic System is Ready to Reboot (when we Type Reboot,

we start Automaticlly in the Android 14 GSI ROM, when it would Boot correct!!! when it does it not,

the Standart System reboots again, and you can close the Notification so that the Configurated A14 GSI would delete,

than you choose the Next GSI and redo Step 9#

when A14 GSI Boots correct than, you have in the Statusbar the Notification about Reboot the System

(when you do it you start back into your Standart ROM)

Also Reboot over Notification in Statusbar starts the Other ROM, so you can switch so often you would!!!!

Have you enought, than close/cancel the Notification and the Installed Second System would be deleted!!!!

on this Way you can Try all GSI ROMs they i have Tell you, without any RISK!!!!!

But more as DUALBOOT/ 2 Android Systems are not Possible

Thats One Method to Test it Out, we can GSI repack as Super.img and Pack Into Odin3 Flashable Package,

Flash it via TWRP Recovery, Modify the STOCK Recovery with Fastbootd!!! But at these Methods Think DONT START

WITHOUT A FULL STOCKROM IMAGE ON YOUR PC

MFG

Steven