mobile

Hi all, got to looking around and seen CM 12.1 nightlies aren't going to be around for awhile :( so I decided to resort to other means. I know CM12 is for 5.0 and yes I'm on 5.1, also heard doing this may brick device but I have also read that CM also addressed this. I've heard they prevented the downgrading of the boot loader in recent nightlies. Can anyone confirm that the most recent nighies are flashable of will this brick my device? Really do not want to flash unofficial builds (no offense devs) because they are buggy and packed full of problems. Thanks!

SOURCE: http://news.highonandroid.com/2015/0...k-your-device/

(Yes ik that thread is for nexus 6 but still applies to the nexus 5 too right?)