The pre-built Release Image can be found at https://github.com/ARM-software/arm-systemready/releases/download/v24.11_SR_REL3.0.0-BETA0_SR-DT_REL3.0.0-BETA0/systemready_acs_live_image.img.xz.zip
Run below steps to decompress the file
unzip systemready_acs_live_image.img.xz.zip
xz -d systemready_acs_live_image.img.xz