Finally rooted! User was fairly easy but admin took quite some time.
I found the U***** path first however I couldn’t get it to work at the very last stage, if anyone succeeded with this method please let me know I think I must have done something wrong.
TV was was pretty straightforward but I wasted a lot of time trying to get a meterpreter shell on the box, in the end I had to do it manually thanks to a hint from @HomeSen but it wasn’t too hard.
Feel free to PM for hints.