What version to create fsb 4 files

i have FMOD soundbank generator 1.08.00 but it creates fsb5 files, how do i set it to create fsb4 files.

We switched from FSB4 to FSB5 in version 4.39 of FMOD Ex/Designer.

Why do you want to make a bank in FSB4 format? Are you porting an existing game made with FMOD Designer to a new platform?