I've had trouble with Elbox responding to my e-mails, too. I don't think that you'll get a reply from them; however, when the accelerator is available, I'd be willing to bet that AmigaKit will stock it. I begged Elbox for many times to re-issue the FastATA for both the A1200 & A4000, but it never happened until AmigaKit stepped in to get it done. I would like to be able to purchase the upgraded firmware chip instead of buying a whole new FastATA device.
