[Galaxy A3, A5, A7, A8, A9 General] Skuld Norniern:
This is my first post of this kind so bear with me, please

Info for Galaxy A8 Star:

CPU : SDM660 ( A only, 64bit )​

Support Project Treble​

Support System as root​

※WARNING※

You will have to have OEM unlocked and this will void your warranty!!!

※also, I'm not responsible for the accident about you bricking your device※​

Step. 1

First of all, you will need to download two custom recoveries (TWRP, OrangeFox)

OrangeFox: https://xdaforums.com/t/orange-fox-recovery-galaxy-a8-star-sm-g885f.4301055/

TWRP: https://github.com/sabpprook/android_device_samsung_astarqlte (test3 file does not work for me but you can try)

I want to finish it only using TWRP but the only TWRP that was working does NOT support flashing the system.img files

and also Orange Fox recovery has a bug that while in recovery you can't connect with the computer and push the files to the phone

so it was required to use two bootloader

Step. 2

Odin: https://odindownload.com/

I also recommend downloading the stock ROM for backup

1. after downloading the TWRP from the link (for Odin we will use the .tar file)

put your phone into download mode

adb reboot download

or just turn off the phone and press the power button, volume up, Bixby button at the same time

and use the volume button to boot into download mode

2. after the phone went to the download mode, go to Odin and at the ap section add the TWRP file then flash it

3. press the volume down, power button to turn off the device, and right after that press the power button, volume up, Bixby button at the same time

4. you will now see the TWRP recovery, press wipe, and format data

5. now we will download some files we needed

makemesar.zip: (at the attachment) or you can download it from https://drive.google.com/u/0/uc?export=download&confirm=P1-1&id=1F_f_tL4sEYFx5fa6AnwR0x1tlYhqarcT ( when you unzip it there is the zip file )​

​

Permissiver_5.zip: https://androidfilehost.com/?fid=6006931924117940902​

​

Disable_Dm-Verity_ForceEncrypt: https://drive.google.com/file/d/166texWJQhR1RgRoXiRSH_M2Q2mAyS2gC/view​

​

Certification_Patch.zip: (at the attachment)​

​

Havoc Rom (you can use any rom you want but this is the one that I've managed to work) http://download.havoc-os.com/?dir=arm64-ab (download arm64 ab with gapps)​

​

most rooms with AB partition will be supported​

​

Magisk: https://magiskmanager.com/ (download the apk and make it a zip file) - you could need for the phone to get the boot (makemesar will unroot it so don't worry)​

​

6. after downloading all the files that we need, we will push the files to our device using

adb push 'file dir' sdcard

※ also push TWRP .img file and the OrangeFox .img too!!

7. after pushing all the files we need to our phone, press install from the TWRP recovery and press flash from image

and select the Orange Fox .img as a recovery image, and reboot to bootloader

8. now you will boot to the Orange Fox recovery, (locate to data/media to find the files)

at the Orange Fox recovery wipe System, Dalvlk / ART Cache, Cache, Data

9. after wiping now install the os.img file and reboot to the bootloader (before reboot you will see the warning that OS is not installed), go to the menu and mount system, vendor, and install Dm Verity.zip, Permissiver_5.zip, makemesar.zip then reboot to the bootloader again, (now we will not see the OS is not installed) and now install the Certification Patch.zip

10. reboot to the system and you will see the new os setup process (sometimes you have to install the Certification Patch after setup the os )

10-1. if your device keeps going to download mode, reinstall the magisk and then reboot the phone, then it will work.

(after it boots, gently turns off the phone and install makemesar.zip first and install Dm-Verity to unroot) - some of you will be forced to use magisk but doing some wiping or reflashing the system.img sometimes makes the unrooted state work (or flash the stock system.img (extract from the stockrom) and flash the gsi ROM without wiping )

Screenshots: At Below

Currently, MTP does not work but I think this is the problem with the Havoc os, if you use another rom it could work

face unlock, fingerprint unlock works, the camera works.

if I manage to get other ROMs workingI will update the post

also at the first time I have made mine to boot without magisk but while doing again for this post I'm having trouble without magisk, if I found a way that works always I will add that to the post

[UPDATE#2]

you can download the Pixel 3 gsi rom from

(Thanks for Santa Duck providing this information!!!!)

with this files you can install the android 12 gsi rom in a usable state!!

and also ADB is working with this rom

there is still a bootlooping bug so do it with caution