Video on how to setup the new ASL3 for Allstar Also links to Pi-Star, Win32 Disk Imager, Raspberry Pi Imager To Download ASL3 Allstar Just put it in cart (free download)
Click on the link below for a great video from "The Ham Radio Crusader" on the step-by-step instructions on how to set up the new ASL3 for your Allstar Node.
(22) AllStarLink ASL Version 3 RELEASED!! - YouTube
He will have the links on the ASL3 download and many other useful link.
Here is some other links to help you out.
Raspberry Pi Imager: Raspberry Pi OS – Raspberry Pi
Win32Disk Imager: https://win32diskimager.download/
Pi Star: Home - pistar.uk