i deleted all the files and downloaded all again, but the problem persist
gpg --verify trisquel_8.0_amd64.iso.asc trisquel_8.0_amd64.iso gpg: Signature made lun 19 giu 2017 05:53:40 CEST gpg: using DSA key B4EFB9F38D8AEBF1gpg: BAD signature from "Trisquel GNU/Linux (Trisquel GNU/Linux signing key) " [unknown]
