Yes, it did. After the firmware upgrade I was able to permanently hit up to 40Mbit/s down and up stable and with a good ping. I'm even using a switch between my devices and the powerline device.

Model : Hardware Version : Firmware Version : ISP : I own a TP-Link AV500 Powerline Adapter (with AC Pass Through), Model No. TL-PA4010PKIT(EU), using the HomePlug AV Standard. There are several...