I’m actually pretty sure tesla uses the same gen3 charger globally now. The charger has 3 24A “cards” in it; when used in the US that gives you a 72A single phase AC hookup. When used in Europe/Australia/elsewhere you get 3 phase input. So, same inverter hardware with a different connector (and config).
indeed, so what would be the technical reason that al US 75d’s qualify for the upgrade while the bulk of the EU cars are not eligible ?