@typhoon_2099 

The TL-PA4010 v3 does not have any firmware available meaning the firmware it has when it is shipped is what is only available. 

If you tried uploading firmware for a different hardware version that will brick the device. The same applies to routers or any other device. Our firmware is specific to the region and hardware version.

I would recommend reaching out to your local support team here: link

@Tony I downloaded a newer firmware from this forum post, in it they explain that the firmware should work for any powerline adapter that uses the QCA7420 chip, such as the TL-PA4010. Is this not correct? What chip is inside the TL-PA4010 V3 if it is not the QCA7420?

@Tony Actually, that firmware does work on the UK V3 adapters, I can boot into it using plcboot and my original PIB (downloaded using plctool). The issue I have is that the TP-Link Utility not only failed up agrade the firmware on the adapter, but it deleted the softloader on the device, meaning I can no longed save the firmware/PIB to the onboard flash. The fix for that is to provide a softloader to plcboot, but I cannot find any reference to sunch a file on the internet (I have been searching for days). From my research I have found that this is something used to flash empty QAC7420 chips, so someone must have a copy that I can get to fix my adapter and avoid a presumably slow RMA.