Hi

For anyone that wants to experiment with making/duplicating their Crossfire keys. The correct blank chip to use is a PCF7935AA

Like these ones on eBay: https://www.ebay.com.au/itm/10PCS-PC...s/172143666760

You can program them with this: https://www.ebay.com.au/itm/OBD2-Min...w0E9:rk:1:pf:0

Have fun!