因爲 deb.mapleboard.org 的發行公鑰到期了,請執行下面命令更新:
$ sudo wget -O /etc/apt/trusted.gpg.d/mp510.gpg.key http://deb.mapleboard.org/mp510/mp510.gpg.key
驗證公鑰:
$ cat /etc/apt/trusted.gpg.d/mp510.gpg.key
—–BEGIN PGP PUBLIC KEY BLOCK—–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=6mop
—–END PGP PUBLIC KEY BLOCK—–
如果正確,再執行 apt update 即可。