Which addresses i should enter? I mean, what numbers?

Really strange, it connects to any other wifi router without the problem...

Yeah, i did asked... At the forum there no one has the solution for it yet...

Done upgrading Changed to channel 20MHz Still can't connect

Yeah, other wireless clients are working ok... - Sony is updated - Being trying with different channels (1,6 and 11) as i've been suggested from the online help here but it didn't worked...

Region : UnitedKingdom Model : TL-WR740N Hardware Version : V5 Firmware Version : 3.16.6 Build 130529 Rel.47286n ISP : Sony Xperia Z1 fails to connect. Actually, it connects for a couple of seconds...