The update went well for me. Of course, I waited until my DOA video card issue was sorted out. Originally I purchased a PowerColor RX570 card from Newegg. Unfortunately, it arrived completely dead, even the fans refused to spin up. Newegg issued an RMA number and a prepaid UPS label. After nearly two weeks in transit and 9 business days after it was delivered to Newegg PowerColor withdrew that model from the market. A whole lot of them were DOA or failed after only a few weeks of operation. The only suitable ATI card available and affordable was the Biostar Gaming RX560 -- not the ideal Hackintosh video card but it works flawlessly even under the updated drivers. BTW, either the update or the card fixed the sleep problem. It looks like my new hack is 100% functional.