If you use Win8.1, run Sony PC Companion in Win7 mode & as admin
Running towelroot & SuperSU without problems!
Will install RAMEXPANDER to my Class10 16gb SD-card, it reallly helps the 512mb RAM! For a while..(1month?) Then I have to remake the swapfile.
Anyway you get what you pay for I guess! 700SEK here in Sweden