Shame... neither work here, using an E-Synth Classic Rack, currently EOS 4.10a - CPU Flash 2Mb, CPU RAM 4Mb.
Both floppies get ignored (Flashprep at boot, EOS462CL when flashing using earlier Flashprep)... back to 4.10a
how does this work. you just down load it to disc and put it in the emu and it loads eos. do you have to do that every time? or does it keep it? i never thought about upgrading and not quite sure how it goes.