Ah the update from version 1 to version 2. I have the files somewhere, although it's tricky stuff doing the update, and you might be better off having Roland do it.
I have the service manual and unless you are methodically minded, you might be heading for a dead VG-88. Wouldn't sleep easy knowing I've helped trash someone's gear.
Saying that, if you're made of sterner stuff and have some degree of methodology, then we can process. Elantric, your important 2nd opinion please...cheers!