There is a new application available for Sparkers: RPi Imager
What is RPi Imager?
Raspberry Pi imaging utility. Graphical user-interface to write disk images and format SD cards. Raspberry Pi Imager is the quick and easy way to install Raspberry Pi OS and other operating systems to a microSD card, ready to use with your Raspberry Pi.
It lets you install Sparky armhf and arm64 image on a SD card via custom image option.
Installation (Sparky 6, 7 & 8):
sudo apt update
sudo apt install rpi-imager
License: Apache License version 2.0
Web: github.com/raspberrypi/rpi-imager