Steve
I'm not sure I'm following what your saying :nut:
I've just stuck the 430 on my 20D and tried a few things.
Flash turned ON, pressed the AF point select button and selected all points. They all illuminated.
Then went into a totally dark room and ½ pressed the shutter button.
The red focus assist LEDS on the flash did their stuff and AF points were selected. On several attempts I got them all to light up briefly as the camera beeped to confirm a focus lock. On other attemps only certain points lit, which is as I understand correct operation as the camera will select the points to give the best focus lock.
Would you like anything more specific?
As you know, I'm on the ORIGINAL firmaware still.
if it ain't broke and all that