Are you looking at old docs? cos AFAIK the latest firmware is 1.6
and from the manual
* (Other) Add ROM
Allows the user to add a KickStart ROM or AmigaOS ROM Updates. They are
always added to the mirror file (not to flash) and can be saved using the
Flash Save button. It will automatically tell if the firmware supports
KickStart remapping or not and will ignore the file on bootup if remapping
is not supported. The only way to remove the KickStart file is to click on
the 'ROMK Kickstart ROM' line of the programs file browser. To use the
Retro Kickstart remapping feature of firmware 1.6 or higher, simply
add the 34.005 Kickstart file to the ROMK slot or if you would like to use
the 512KB Kickstart remapping as well, join the files.
I couldn't find any mention of what CPU cards are supported, I guess it's probably the same set as Blizkick
Edit.. found this snippet in firmware.txt
* Kickstart remapping for Cyberstorm MK1, MK2, MK3, PPC, Commodore A3640
and BlizzardPPC boards.