By default petalinux uses sstate-cache and download mirrors from petalinux.xilinx.com This README is for the users who uses tool completely offline. Setting sstate cache 1) Extract the downloaded tar contents of sstate-cache at any location 2) run petalinux-config -> Yocto Settings ->Local sstate feeds settings ->local sstate feeds url (press Enter) 3) Provide the path of sstate-cache from above Ex: //aarch64 for Versal projects 4) Save the configurations to use the sstate-cache Setting download mirror 1) Extract the downloaded tar contents of downloads at any location 2) run petalinux-config -> Yocto Settings -> Add pre-mirror url -> (press Enter) Clear default value 3) Provide the path of downloads from above file:///downloads for all projects 4) Save the configurations to use the download mirrors 5) Verify the changes in build/conf/plnxtool.conf 6) petalinux-build