How to update powerline PLA-4205 (ethernet adapter) and PLA-4225 4-port gigabit switch) system?

AnthD

I have a PLA-4205 ethernet adapter plugged into wall power and with my router plugged into it.  In the rest of my house I have four PLA4225 switches plugged into house power with ethernet cables coming out plugged into various devices.  I need to upgrade this system, and one of my PLA4225 switches was getting warm.  The new Powerline hardware switches are somewhat different.  Any ideas? 

#PLA_Sep

Mihawk

Hi, I think is not possible to upgrade, since Zyxel didnot release any firmware and upgarde tool.
If you would like to find any other way, then you can search its chip: Atheros AR7400, but not sure those tool can be 100% workable.