debian apt升级错误的解决办法

# gpg --keyserver wwwkeys.eu.pgp.net --recv-keys F1D53D8C4F368D5D
gpg: requesting key 4F368D5D from hkp server wwwkeys.eu.pgp.net
gpg: key 4F368D5D: public key "Debian Archive Automatic Signing Key (2005) " imported
gpg: no ultimately trusted keys found
gpg: Total number processed: 1
gpg: imported: 1

# gpg --armor --export F1D53D8C4F368D5D | apt-key add -
OK

F1D53D8C4F368D5D    这个根据自己的电脑实际KEY而定