Emu XL-7 & MP-7 User's Group

I just had the same problem trying to upgrade an MP-7 that had OS 1.31. The solution is to first download the bootloader "commandprep10.dli", even though the E-loader documentation says this is unnecessary. Then download the version 2.0 OS. 

All working fine now for me.

--- In xl7@yahoogroups.com, "shakerz25" <shakerz25@...> wrote:
>
> Trying to upgrade an MP-7 from 1.18 to 2.0.  Using a Windows XP PC this time (gave up on using MAC OS 9 Classic--can't open e-loader).
> 
> Downloaded and installed e-loader, and it looks functional.  Downloaded the 2.0 dli file from the E-Mu site as well. 
> 
> But I can't get a complete download of OS 2.0 to the MP-7 before the download fails.  
> 
> The download request from the MP-7 works, I start the download from e-loader (it says the complete download is 557331 bytes), but it fails every time, at different stages of download.  
> 
> Error message on PC says download filed.  Error message on the MP-7:  "Error Downloading MIDI:  Wrong Length."
> 
> Tried many times; the failure occurs at different points in the download:
> 1904 bytes
> 9072 bytes
> 43680 bytes
> 100800 bytes
> 3584 bytes
> 52976 bytes
> 18592 bytes
> 55216 bytes
> 11872 bytes
> etc.
> 
> Is there some MIDI setting on the MP-7 that has to be set?  I've tried varying the MIDI Sysex Packet delay, for example (it can be set from 0 milliseconds to 8000).  I've also tried changing the Sysex ID from 0 to 1.  Download fails the same way every time, at different points in the download.
> 
> Since the e-loader software seems to work, and at least part of the download works, it looks like the problem is in the MP-7--but this one is in pretty good shape.  Any ideas...?  How do people get this to WORK...?
>