I can confirm the above method of the reset with the clear screen hold, turn to on and then to hold. It didn't work the first time, it took me 5-6 tries to do it.
Hey guys, I too have this issue. I bought a new 600ex-rt from thecamerastore (calgary), and no atter what type of batteries I put in (duracel AA, or Energgizer Advanced lithium), I got the dead battery symbol. This is hyper frustrating, I've tried ...
