http://www.techradar.com/news/dont-download-intels-latest-spectre-and-meltdown-patch-intel-warns >If you own a PC or Mac using an Intel processor and have been patiently waiting for Spectre and Meltdown patches appear on Windows Update or Mac App Store updates, you shouldn't download it. >That’s the latest directive from Intel, who cited spontaneous reboot and system instability problems – first reported January 11 – following its latest firmware patch aimed to defend against the Spectre and Meltdown exploit vulnerabilities. The company issued a blog post today warning both its partners and end users.