I don't know the firmware or hardware version. I purchased these in September 2020 so I'll assume they work. Since then my router was changed and I had to update my password and router name. I did but can no longer access this site as my computer warns me it is unsafe. https://192.168.1.1. Says connection not safe and information can be stolen. Because I was able to get the extender to work afterwards by updating name and password at https://192.168.1.1. but now won't work at all. I tried reset button and that doesn't work. I even tried using ethernet connection and no go. Only power light comes on not signal light.