Om Japan issued the following press text (google translated):
We are currently receiving inquiries from customers using the “OM SYSTEM OM-1” that the camera freezes during shooting.
As a result of our research, it was found that when shooting with the EVF (viewfinder) frame rate set to “high speed”, freezes occur depending on the shooting conditions. We have identified the cause and are currently preparing for the release of firmware that addresses this phenomenon on the Web.
Customers who have experienced the above phenomenon are kindly requested to set the EVF frame rate to “Standard” before using it.
We will inform you of the firmware release date at a later date, so please wait for a while.
We apologize for any inconvenience caused to customers using “OM SYSTEM OM-1”. * From the press release
OM-1 at BHphoto, Adorama, Amazon. GetOlympus.
OM-1 in EU at Calumet DE. Fotokoch DE. Wex UK. Olympus DE, Olympus UK, Olympus FR, Olympus IT, Olympus ES. Olympus NL. Olympus BE. Olympus AT. Olympus CH.