Removing Front Cup Holder:

Release screws (1).

Remove cup holder (2) from base (3) for center console.

Fig 1: Removing Cup Holder From Base For Center Console

Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Left/right catches (1) must be correctly secured.

All springs (2) on cup holder (3) must not be damaged.

Fig 2: Checking Springs On Cup Holder

Courtesy of BMW OF NORTH AMERICA, INC.