Analogue-sequencer

> I had almost exactly the same issue with an older P3 last week. I was 
> using MidiOx as well and got the BAD DATA messages when sending the 
> upgrade. I tried a few times to no avail. 

When P3 receives a firmware block, it takes a little while to decode and
write it into the flash ROM.
When it's done the writing, it sends a handshake message.

MIDI Ox doesn't wait for handshake messages, so it needs to put a long
enough gap between blocks so that the writing is finished before it sends
the next block.

P3 Tools waits for the handshake message, so it will send the code as fast
as P3 can write it, but no faster.

To set up the correct delay in MIDI Ox:

Start Midi Ox
Go to "View", "Sysex..."
In the Sysex View and Scratchpad window, go to "Sysex", "Configure..."
Make sure the "Delay after F7:" checkbox is ticked, and enter a delay of
100ms
Click "OK" to go back to the sysex window, then you can send the sysex file

Alternatively, you can use the MID file version of the firmware, and play it
with Windows Media Player, or a.n.other midi file player.
The MID file has the delay encoded into it.

Best regards,
Colin Fraser
Sequentix Music Systems Ltd
http://www.sequentix.com