public function checkKernel()
    {
        $content = file_get_contents($this->kernelURL);

        $out = JSON::decode($content, true);

        if ($this->compaireSecondary($out->version, $this->kernel->version)
         && ($out->sha != $this->kernel->sha)) {
            return $out;
        } else {
            return false;
        }
    }