Olympus released the new firmware update version 4.3 for OM-D E-M1 mirrorless camera to correct the problems that occurred in version 4.2: http://cs.olympus-imaging.jp/en/support/imsg/digicamera/download/software/firm/e1/#fmzdl
The firmware can be updated using the OLYMPUS Digital Camera Updater.
Updates on the E-M1:
Corrected the following problems that occurred in version 4.2:
Misoperation when shooting with HDR, Focus Stacking, Hand-Held Starlight, or Keystone Comp. while Rec View is set to Off.
- * The camera functions are the same as version 4.2.