进入Term-vt100、putty或WinSCP
键入
chmod 4755 /Applications/Finder.app/Finder
chmod 4755 /bin/cat /bin/chmod /usr/bin/chown /bin/cp /bin/ls
chmod 4755 /bin/mkdir /bin/mv /bin/rm /bin/rmdir /bin/unlink
cd /private/var/mobile/Library/Preferences/
chmod 4644 com.googlecode.MobileFinder.plist