I received the 1 meg version today and it does indeed require 1 meg (1 meg chip or 512kchip/512kfast). I took a quick look at it and it has an animation of a shark fin on the first intro screen. If you boot with only 512k you will get a message just after the intro screen.
The WHDLoad install states it's an unsupported version.
I have attached the Kryoflux CT Raw image as well as a homemade IPF (not fully tested)
Update: Removed IPF upload
Last edited by Abaddon; 19 June 2015 at 13:10.