Sorry, no. EX5/R firmware comes on 4x8M ROMs and can not be downloaded and flashed. They must be requested from the local Yamaha service centre.
Usually you pay a deposit for the ROMS then they credit you on return of the old ones but check your centre first as the rules seem to vary around the globe.
www.ex5tech.com has loads more details - brilliant site.
[This message has been edited by Jim Attfield (edited 01-24-2002).]