When you want to run a Raspberry Pi for pentesting, you can easily download all of the Kali linux to your Pi.
After changing the repository i ran in to a error.
While people on the forum ginving some different options, this one worked for me.
sudo apt install ./kali-archive-keyring_2018.1_all.deb
Everything looks fine now. Let’s check for the final.
sudo apt-get update