on pages 1-7-3 & 1-7-4 it describes the firmware upgrade process. Procedure 10 is what I am unsure of. Do you load the upgrade into the CompactFlash once for BOTH the Engine Main PCB & the IPU PCB or once for the Main PCB and then again for the IPU PCB after procedure 9.

It is probably a dumb ?, but that's all I have this morning.
copierdude

Not a dumb question... but here's a dumb answer; YES, I've seen it done both ways by a MFG rep. you can load it onto one card and do them one at a time(seems safer) the upload shows on the display to tell you which firmware is bieng upgraded. If it's your first time I'd call tech support b-4 you do anything, let them screw it up for you!