Most information on the Falcon Christmas F4V2 E1.31 to SPI pixel controller is at http://falconchristmas.com/forum/index.php?board=55.0
The F4v2 is no longer available. It has been replaced by F4v3.
The article remains for information and support of existing F4v2 owners.
The Falcon Christmas F4V2 is available through bulk buys organised occasionally.