Dear Sir,
The firmware are shipped in stellarIP format. StellarIP is the design assistant converting the firmware into an ISE project file.
It is about browsing your VC707-FMC150 firmware main file (.sdf) in StellarIP, configure your ISE version and then press Generate. You can see some information about that in the 4FM Getting Started Guide.
The guide refers to training materials which are not yet available for VC707 but you can replicate the steps using VC707-FMC150 firmware.
Best Regards,
Arnaud