I had this error because I tried to install a Mark III firmware on a Mark II model. This doesn't work!
Maybe it's the same problem here? A model mixup?
Are you getting error 17 or 14? You've posted in two threads for different error codes.Keep having error 17 and can't update please help
SOLVEEEEEEEEEEDAre you getting error 17 or 14? You've posted in two threads for different error codes.
Which one are you getting?
As mentioned above, if you are getting 17 then you are trying to send an incompatible FW.
Which model MFC do you have? Did you download the FW that is correct for that model?