My response in another thread answers your specific question: Connect Life Fitness IC8 with Zwift - #7 by Howdy_Doody
It summarizes all of the possible ways to connect the Life Fitness IC6, IC7, & IC8 bikes to Zwift. It includes what is necessary to upgrade to the TFT 2.0 console, which I have done successfully with an IC7. I don’t believe that the IC5 and lower can be upgraded to this new console. But, the other information in that response might provide an alternative solution.