How to Install B1i Framework?

Hi Experts,

About a month ago we upgraded our customer from PL11 to PL12 on SAP B1 for HANA but now they want B1i Framework installing. When I've gone to the setup, it won't load to the menu as a different version is in use (the setup is that for PL11). How would I install B1i Framework on PL12?

Thank you,

Jamie