# download
wget https://http.kali.org/kali/pool/main/k/kali-archive-keyring/kali-archive-keyring_2025.1_all.deb
# install
sudo dpkg -i kali-archive-keyring_2025.1_all.deb
# remove downloaded file again
rm kali-archive-keyring_2025.1_all.deb
# try to update again
sudo apt-get update -y
APT UPDATE – KALI LINUX 2025
