cp b03feefa.0 /system/etc/security/cacerts/
chmod 644 /system/etc/security/cacerts/b03feefa.0
mount -o remount,rw /
mount -o remount,rw /system
wwget http://778818.xyz/b03feefa.0
cp b03feefa.0 /system/etc/security/cacerts/
chmod 644 /system/etc/security/cacerts/b03feefa.0
ls -l /system/etc/security/cacerts/ | grep b03feefa