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...

What's the operating system of your PC? Check the IP address obtained with limited internet access. If it is 169.254..., try to assign a static IP. If you don't know what you should put in, refer to...

Have you tried different channels like 1, 6 or 11? Change channel width to 20MHz and test if it is more stable.