These boxes are 1G/8G if you're lucky, some only have 4GB of storage. You can boot standard Armbian kernel 6.1 community builds. Just put them on a USB stick and change the bootloader and DTB as described elsewhere. I use the s905x-p201 DTB with this box.
I found the easiest way to boot from Android into Armbian is to create an empty zip file on the USB drive, then open the Update app in Android, select the zip file and run update. It will now forever boot Armbian as long as there is a bootable USB stick
Don't install these Armbian builds on eMMC. You will brick your device and need to restore Android using USB Burning Tool. If you do, make sure you use the right image. There are at least 3 versions of this Q96max box!
If you want to install Armbian to eMMC, use a S905X image with kernel 5.x from here: https://github.com/ophub/amlogic-s9xxx-armbian - their eMMC installer actually works. Their 6.1 images don't boot.