I do not know if it is the HFW or the HEN payload, but one of the 2 blocks the possibility of updating the firmware via the internet, this to prevent the user from updating by mistake so it must be done by usb and probably entering the recovery mode, It is a good insurance since in the past there were many who updated their consoles out of ignorance and then ended up harassing the developers to develop a new exploit compatible with their version of FW.