Yamaha DTXpress/DTXplorer/DTXtreme

HI all ... I was wondering how to set my module back to default 
settings and sounds... i have the dtxpress2 mod, was playing the 
kit ... all was well .. took a little break , came back and it 
sounded like i was playing in a tunnel yet all the reverb settings 
and everything else were untouched. I have to play tonight with the 
band , and need my kit!!!  please help! I just need to know how to 
get the mod back to "out of the box" new, once there i can reprogram 
my kits lost. 

thanks for your time ... Jaymz Hughes