Why am I unable to enable the FlyCam in cutscenes?

I have followed all the directions correctly from the page Mass effect 3 Tweaks Page.

My mapping key is "K" (without shift).

I did the following:
( Name="K", Command="ToggleFlyCam" )

in

Bioinput.ini/sfxgame/sfxgamemodedefault
Bioinput.ini/sfxgame/sfxgamemodeflycam

and

( Name="MouseX", Command="PC_LookX" )
( Name="MouseY", Command="PC_LookY" )
( Name="A", Command="PC_StrafeLeft" )
( Name="W", Command="PC_MoveForward" )
( Name="D", Command="PC_StrafeRight" )
( Name="S", Command="PC_MoveBackward" )

in

Bioinput.ini/sfxgame/sfxgamemodeconversation

I also added ( Name="K", Command="ToggleFlyCam" ) in Bioinput/sfxgame/sfxgamemodecinematic as discussed here.

FlyCam is working everywhere fine but not in cut scenes.

You should add these lines under 'sfxgamemodebase':

(Name="MouseX",Command="Count bXAxis | Axis aMouseX",Control=True)
(Name="MouseY",Command="Count bYAxis | Axis aMouseY",Control=True)
(Name="A", Command="PC_StrafeLeft",Control=True)
(Name="D", Command="PC_StrafeRight",Control=True)
(Name="W", Command="PC_MoveForward",Control=True)
(Name="S", Command="PC_MoveBackward",Control=True)

To use the freecam, hold Ctrl and move using WASD and Mouse.