Safe to install august security patch?

Hello friends, I got update for august patch but I want to root my device. But I can't find oem unclock button under developer option. So my question is
Is it to safe to install this update? Can I root my device with this august patch?
Another question, is there any trick to skip 7 day waiting to show oem unlock button?

Thanks

Welcome to Android Central! I won't be able to help with rooting questions, but I can say that it would be important to know which phone you're talking about.