Try the attached one. Recommended settings:
//******************************************************************************
// Logo HUD system: clan image
//******************************************************************************
// Show extreme logo. Can be used to show custom clan image.
// Image must be named "clanlogo.iwi" and copied into the "images" folder of the
// client side iwd file (materials file "clanlogo" in mod.ff assumes this name).
// 0 = disable
// 1 = enable (default)
set ex_logo "1"
// Image X (horizontal) position on screen.
// min = 0, max = 640, default = 600
set ex_logo_posx "560"
// Image Y (vertical) position on screen.
// min = 0, max = 480, default = 120
set ex_logo_posy "130"
// Image X (horizontal) dimension in pixels.
// min = 0, max = 512, default = 80
set ex_logo_sizex "128"
// Image Y (vertical) dimension in pixels.
// min = 0, max = 512, default = 80
set ex_logo_sizey "128"
// Image transparency.
// min = 0, max = 9, default = 0
//set ex_logo_transp "0"
// Loop time for fading effects (seconds)
// 0 = disable (always on)
// 1 - 3600 = time to pause after fading out (default 120)
set ex_logo_looptime "300"
// Time to pause between fade in and fade out (seconds)
// min = 1, max = 3600, default = 10
//set ex_logo_fadewait "10"
