Just soon after the release of DJI Osmo Action, DJI has released a new firmware update v01.02.00.10 for Osmo Action, you can take a look at details of this new firmware:
DJI Mimo App iOS: v1.1.0
DJI Mimo App Android: v1.1.0
Updated the EIS to RockSteady.
Added two second and five second timers to countdown in photo mode.
Optimized system sounds.
Increased Wi-Fi connection stability.
Improved Timelapse and HDR video quality.
If the update fails, restart Osmo Action and DJI Mimo, and retry.