Immobilizer PUNTO`95

hello, my neighbor has an urgent problem. together with him we bought a punto about 1 month ago from a free workshop without guarantee. and we only got one key a second was not available and we accepted the immobilizer we had no idea. now lights up the lamp and it only starts with the electric code. the fiat dealer thinks we would have the 2nd key (red) to program it otherwise must be pretty much everything out can you deactivate or extend the immobilizer somehow ??!! or maybe any other solution I would urgently need your advice mfg