But even if Von performs a ROM-dump, will that version 2.6 ROM work on all board revisions? Consider the board in my Flickr photo here. Note the Radius chips is dated 1990 and has 297-0309 printed on it. Now consider that the same chip on Von's board is dated 1991 and has 297-0587 printed on it. How are we to know what ROM versions work with what chips and board revisions? It would seem trial-and-error would be the only way.