You don`t just require a newer revision but a special replacement set of two programmable EPLD chips. Absolute no Fastlane ever shiped with those chips, you could only get them as an upgrade. Since 16MB SIMMs were quite expensive back then only a few of those upgrade kits were shiped.
It is belived that the number of those "golden" Fastlanes is about 10-20 worldwide.
Effectively your only chance of getting one if buing it from someone who doesn`t know what it is, as all those who know they have an 256MB Fastlane will never sell it.
P.S. I have been searching for about 5 years now and endet up with a DKB3128 instead.
