Quote;"..............I actually spoke to the importers here yesterday and confirmed that a new software upgrade is available to increase H/d capacity to 70Gb. "
I posted that comment a couple of weeks back in relation to the D160 in a thread here. I would suggest you contact the Fostex Distributors in the UK and ask them if they have the necessary upgrade available.........it apparently doesn't take them long to do it.
As the D80 and D160 were concurrent models (one 8 trk and the other 16 trk) I would hope that H/drive capabilities were the same but you should really contact the UK importers and check it all out with them.
Re the Eprom chip....... I think it would have to be done by the importers service people...........but again, check it out.