Unfortunately, you can not send a SysEx bulk dump from an R-8 to an R-8mkII.
While the R-8mkII is based on the R-8 machine, the architecture and design are
completely different. Since the R-8mkII has more pattern memory and more
instrument locations, it is not possible for the two units to communicate
through SysEx.
However, the R-8 can send individual patterns out MIDI to the R-8mkII. You may
also save data from the R-8 and load it into an R-8mkII by using an M-256E data
card.
While the R-8mkII is based on the R-8 machine, the architecture and design are
completely different. Since the R-8mkII has more pattern memory and more
instrument locations, it is not possible for the two units to communicate
through SysEx.
However, the R-8 can send individual patterns out MIDI to the R-8mkII. You may
also save data from the R-8 and load it into an R-8mkII by using an M-256E data
card.