Korg Modwave Firmware update

Hi guys ,
I tried to update the firmware on my Modwave and i believe i may have by mistake clicked on Formate the disk when trying to instal via Boot Mod. It says update completed and then to turn the power of and then switch it on to end the update but it just stays with the MODWAVE on the screen and doesnt turn on.
Does any one know if i can fix this . I live on an Island and its not east to send it for repair .

Thanks in advance if the there is any advise for me to try to ket it booting up again .