Finally I have fixed the problem and the solution was... Changing the firmware to OpenWrt. Now my router is out-of-warranty, but at least it's working. Anyway this confirms that it's a firmware...

Aldrich wrote Hi Elmad, What you provide me is the chipset of the wireless adapter, I want to know the model number of the wireless adapter. please check if they are the same. I'm not sure that I...

Aldrich wrote Hi Elmad, Could you please upgrade your TL-WR740N to the newest firmware and try again? http://www.tp-link.com/resources/software/TL-WR740N_V4_130329.zip If the problem still exists,...

Aldrich wrote Hi Elmad, Could you please upgrade your TL-WR740N to the newest firmware and try again? http://www.tp-link.com/resources/software/TL-WR740N_V4_130329.zip If the problem still exists,...

jimasek wrote First you have to make firmware update on your router, second make router configuration without "Automatic", something like in my tutorial - LINK How do you supposed that i used...

I have the same problem with TL-WR740N and Xperia mini pro. My solution was to disable WMM. But in this way my laptop wireless card, intel 5100, fallbacks at 54Mbps 802.11g. Now I'm trying to...