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Hi, If by upgrade, you mean make a different set of chocs. You have to pay for the upgrade on any factory. it will say something like you are not currently set up for this type - do you want to make? it will cost $$$$$$.  Once you buy in you can make whatever you want.  I usually set half  of my machines to do bars and infusions and all of the machines to make  truffles and exoctics and keep one on sauces and one on Pralines.