Alternative title: How to avoid bricking your router.
This is a published draft version for public review. Comments welcome.
When I started to develop a customized build of OpenWRT CC15.05/15.05.1 for my TL-WR1043NDv1, I ran into some problems. I bricked some of my routers. It also happened to me with the current the LEDE 17.01-rc2. Let my start from the beginning: