Nothint to do, I've tried in any way... WPS does nothing, manual says "Memorized this device" when I select connect (?) then it says "disconnected->now scanning->disconnected".
As PRS-T2 is the first device that I connect in WI-FI probably my router doesn't work at this point or there's some form of incompatibility
P.S. After rooting there are is the possibility to install other connect utility? The Sony one seems to don't make any sense