What is the purpose in updating BusyBox?
And what's with the custom version?
Is it really essential to update this for all user or best only for developers and modifiers?
I asked before I modify this post if the "Auto Update BusyBox" above the BusyBox Pro works without Google Play in my device. I have busybox v1.22.1-stericson installed and found it to be the latest. So I can figure it out on my own soon whenever an update is released. :P