Please Write here your help request, – i can't download kcmshell5 at Parrot-security-6.1_amd64.iso maybe it's the latest distro and it's not finished.. I was trying to download something, executing sudo apt install x it says E: Unable to locate package X. And this happens with everything I want to download via apt install.
https://community.parrotsec.org/t/unable-to-locate-packages/28238