Hi all,

when i have read this conversation i remembered my "experiments" some months ago: After getting also this message on my PC i set in MidiOx the following (Data transfer via Roland UM one):

Menu "View"-> "Sysex..."-> there: Menu "Sysex" ->"Configure..."->Set "Delay between buffers" and "Delay after F7"  each on 140ms (not more and not less).

I tried this again for my new K8P update now: Error message without buffers set but sucessful update with buffers set.

Hope this helps.

Till