This video is about installing the nethunter app with rootfs. Here are some issues that maybe you can face: 1- If downloading the rootfs through the nethunter app fails then you can manually download the rootfs from http://kali.download/nethunter-images/current/rootfs/ and select the restore option from the nethunter app. 2- If you are not able to run the apt command or if Kali not starts in the terminal app then this issue is due to encryption. You can fix this with the below command(run through android su): sed -i 's/pam_keyinit.so/pam_keyinit.so #/g' /data/local/nhsystem/kalifs/etc/pam.d/* If you have any other issues, let me know in the comment box.