Yes, it is possible to update the GoPlug Firmware with OpenEVSE versions.
We do not recommend upgrading the safety firmware on the controller, this firmware is mature, stable and rarely changes. It also requires programming hardware and software tools. GoPlug_1.0.0 is based on the latest release of OpenEVSE_5.0.1.
The firmware on the WiFi module can me updated without any special tools or skills.
-Download the desired firmware. GoPlug recommended for most, OpenEVSE Advanced users.
-Login to your GoPlug
-Click the System Tab
-Click Choose File
-Find the file previously downloaded
-Click Update - The process will take 1 - 2 minutes.