I just installed 110 patches for the REV 2 by sending SYSEX messages, a file that was preconfigured to write to Bank 01, or "U1." The seller created four separate identical files all containing the same content, but each file differed only in what bank it would write to. (110 patches could easily fit on on one bank). You could choose a file based on which bank you wanted to write to. Now I'm thinking about loading the Prophet 08 sounds but I have no way of knowing how many patches it contains and no way to tell it to start writing at Bank 02, or U2, providing they will all fit on the 3 remaining banks U2, U3, & U4. Is there a way around this? I don't want to overwrite bank U1. I suppose I could reinstall the previous 110 patches to Bank U4, since I have that option, and then hope the Prophet 08 sounds only write to banks U1, U2, & U3. I will wait to hear from some pros. I am very new to all of this.