SBB [CHINA] KEY PROGRAMMING TOOL UPDATE

[devil09]

Well, after the update my SBB stopped working.
Only a blank backlit screen after the power cable is plugged in.

READ #33 POST IN SAME THREAD I THINK YOU MADE MISTAKE DURING UPDATE. NOW NO USE OF YOUR SBB

[marginal]

What kind of mistake could I have ever made?
It updated OK, I disconnected it from the PC, turned it on, it worked, turned it off, then back on and no more SBB.