Analogue systems

Dang.

When attempting a sysex firmware update on a Mac via A. Sys's 
new midi sysex file, I thin I screwed soemthing up as now I get 
nothing but a line of black squares across the first line of the 
display.

I've written Bob but I'm wondering if any of you have dealt with 
this, and if there's a fix beyond sending it across the puddle to 
the UK for repair.

Any information would be helpful.

thanks in advance,

Peter