Why not buy a third powerline adapter to work with the kit and place it in the TV room? A range extender will work better in the same stairs to boost Wi-Fi signal. My suggestion is that buy a PA4010...

Normally, your PC should obtain IP address from D2 automatically. When the PC uses dynamic IP, what's the IP address obtained? How about the printer? D2 is working as a modem router or router only?

Can you share how did you solve the problem? :)

140606 should be the customized version for Canada users. The latest firmware is proper for worldwide users. :)

TD-W8960N_V1_V3_110620 is the old firmware on their website. http://www.tp-link.com/en/support/download/?model=TD-W8960N&version=V3#tbl_j

You are suggested to contact support in India. :) I find the contact information on their website. Hope it helps. For Support in India (English & Hindi Service) Call (Calling from the US will reach a...