I realise this is a bit of necromancy but I'm on lockdown and wondered what had been going on in victorland - those images (I created them) won't work on a vicki even if they can be written - it needs a different BIOS - which I don't think they can. The reason being that they were read on a normal fixed speed drive, and the drive electronics tidy up the bitcell timings. This doesn't work well with the variable speed disks from the victor and you lose data. Writing will have the same issues. The only way I think it's possible to do this with a kryoflux or greaseweazle is to adjust the rotation speed of the drive to ensure the fluxes arrive at a speed consumate with what the drive electronics expects. Likewise for writing.