Dreamup Problems.

[jezreel]

Hi Guys, bit of a newbie but have carried out this task before!!. DM550S just stopped working??? so thought I would carry out a reflash as per instructions above. Connect unit to PC via null modem, open 'Dreamup' press "connect", switch on the power and ......nothing. Box does not say "connected" in readiness to upload image....Any ideas, is my box bricked???
Any help would be greatly appreciated.....
Jezreel