Giancarlo Fisichella on Saturday tested a refined version of Ferrari’s own F-duct solution.
The Italian team’s test and reserve driver was at Vairano, where what Ferrari described as the "management system for the blown rear wing" was run along with the entire Barcelona-spec package.
Ferrari said that "depending on how things go in the two free practice sessions next Friday, a decision will be taken as to whether or not to use all the updates for qualifying and the race".
The updated F10 also features inboard rear mirrors, in accordance with the ban that kicks off in Spain next weekend.
Fernando Alonso told Corriere della Sera newspaper that he thinks Ferrari can catch F1’s pacesetter.
"Red Bull is stronger in qualifying and they are very fast, but we can catch up in the race. (And) McLaren knows how to develop its cars very fast, but we’re not joking either," he said.