Black screen after install

Issue #1191 invalid
Former user created an issue

After downloading 2011Dec22 version, and moving the contents of the zip to an camera-formatted memory-card, but I'm not able to get it working proper. I have a fully charged battery, set my settings to default and my wheel tot the M position. I also disconnected al my extra's from the camera (grip e.g.)

I select Update firmware from the menu, get a message that the firmware is currently being updated, and after that my screen goed black. I have autofocus, but my display does nothing. Aster removing and replacing the battery, my camera works back as usual.

Tried a few versions of the firmware, but it won't work. I'm almost sure i'm not doing anything wrong.