https://www.alpinelinux.org/

• boot device into oowow mode
• Select oowow - wizard and chose alpine/ and select available image version for installation
• install and reboot

login under root user without password. continue setup by common alpine manuals or use khadas special simple script

Welcome to Alpine Linux 3.23.0_alpha20250612 (edge)
Kernel 6.1.84-0-lts_edge2 on aarch64 (/dev/ttyFIQ0)

localhost login: root
Welcome to Alpine!

The Alpine Wiki contains a large amount of how-to guides and general
information about administrating Alpine systems.
See <https://wiki.alpinelinux.org/>.

You can setup the system with the command: setup-alpine

You may change this message by editing /etc/motd.

localhost:~# 

Additional helpers and script will be stored in /media/mmcblk0p1/

complete setup

cd /media/mmcblk0p1/

Just few script which can help automate some steps for use and made setup/installation process as simple as possible