Quote form Vesalia.de
"AmigaOS 3.9's hardware requirements are identical to that of Amiga OS 3.5. AmigaOS 3.9 is a software-only Update w/o ROMs (however, it requires Kickstart 3.1 ROMs to operate!)
AmigaOS 3.9 is the Update for OS 3.5 -- but it can also be installed directly on top of an OS 3.1 system."
Get 3.9 CD-ROM, make sure you have 3.1 install and away you go
Link to Vesalia.de website.
