Can't do firmware update on M9. Help!

[sanvandur]

I've been trying to update my M9 as per Leica's instructions. When I choose to update to the new firmware on the camera's screen, it all goes black and nothing happens. I wait for a few minutes -nothing happening, no screen prompts, no flashing light, nothing- until I finally just turn of the camera entirely. When I turn it back on, firmware is still 1.116.
What am I missing?

[JohnBrew]

Dont know if this will help or not, but I used to keep a 1 gb card, never used in the camera, just for firmware upgrades on my M8 because I originally had problems with used cards.

[sanvandur]

All set. I popped in a different SD card and it all worked just fine.
Thanks!