[Treble-Enabled Device Guides, News, & Discussion] .Luce.:
The topic is divided into two parts, one for those who want to use fastboot and another for those who want to install TWRP.

The following procedures require unlocking the bootloader.

Downloads for Fastbootd:

Odin: https://odindownload.com/download/Odin3_v3.14.4.zip

Fastbootd (boot.img and recovery.img):

fastbootd - Google Drive

drive.google.com

Downloads for TWRP

Odin: https://odindownload.com/download/Odin3_v3.14.4.zip

TWRPv2 By Almond:

TWRP - Google Drive

drive.google.com

Fastbootd Tutorial

Enter download mode, turn off the device and then hold down the Vol+ and Vol- buttons and connect to the USB cable then click Vol+ to continue.

Open odin on your PC and click AP to select the .tar file you just transferred.

Go to the "Options" tab and uncheck the "Auto Reboot" option.

After selecting the file, make sure you have your device connected to the PC and click "Start".

After Odin finishes installing, hold the Power and Vol- buttons until the screen goes off and then release the Vol- button and hold Vol+ while still pressing the power button, this will make the device enter recovery mode and there will be the fastboot option .

To install a GSI using fastbootd use the command fastboot flash system file_name.img

I couldn't use the fastboot boot file_name.img command in fastbootd, I can't tell if the problem is fastbootd or the TWRP image.

TWRP Tutorial

When installing TWRP your files will disappear and several folders with random names will be created on the internal storage. I don't know the cause of this but I hope you are aware of it if you continue with the tutorial.

I was also unable to install GSIs using this TWRP, you will have to create a specific GSI to install on this device as it does not have a separate System partition but rather a Super partition.

I was also unable to start the device after installing TWRP, when starting the device it enters TWRP.

However, it is possible to install a ROM, I haven't tested it but I believe it starts normally.

Enter download mode, turn off the device and then hold down the Vol+ and Vol- buttons and connect to the USB cable then click Vol+ to continue.

Open Odin on your PC and click AP to select TWRP.

Go to the "Options" tab and uncheck the "Auto Reboot" option.

After selecting the file, make sure you have your device connected to the PC and click "Start".

After Odin finishes installing, hold the Power and Vol- buttons until the screen goes off and then release the Vol- button and hold Vol+ while still pressing the power button, this will make the device enter TWRP.

GSIs I tested on this device:

lineage-20.0-20230815-UNOFFICIAL-a64_bvS.img.xz

This GSI does not work with MTP file transfer.

To correct headphone detection, go to settings and Phh settings > Misc > Use alternate way to detect headsets, it is necessary to restart the device.

It starts with an average consumption of 1GB of RAM.

SIM card is not working.

lineage-18.1-20220715-UNOFFICIAL-a64_bvS.img.xz

This GSI does not work with MTP file transfer.

To correct headphone detection, go to settings and Phh settings > Misc > Use alternate way to detect headsets, it is necessary to restart the device.

It appears to be very slow and consumes all CPU processing.

It starts with an average consumption of 1.2GB of RAM.

system-squeak-arm32_binder64-ab-vanilla.img.xz

This GSI does not work with MTP file transfer.

To correct headphone detection, go to settings and Phh settings > Misc > Use alternate way to detect headsets, it is necessary to restart the device.

It starts with an average consumption of 0.9 GB of RAM.

Apparently it is not possible to transfer files using Bluetooth.