What a great box!
It’s mine 9th but the best I’ve seen yet
Thanks to @Itri3d for history reference at the beginning! Feel myself stupid at this moment
So user was good, interesting and very logical. I’ve stuck for a few hours to sleep and code wget handler finally (thought about that few last machines already) and root was fast and pretty easy, you just need some manuals and use all the information you’ve collected
Many thanks to @rotarydrone for this puzzle