Sony a9 Firmware v.3.01 Released

From Sony:

This update (version 3.01) provides the following benefits:

Corrects a condition where the camera may not operate properly after updating to firmware version 3.00
Note: For cameras updating from version 3.00 to 3.01, the registered settings for the Fn (function) menu may not be inherited. You may need to customize the menu to your preferred settings again.

Optimization of optical image stabilization performance, and support for new image stabilization mode of the lens (Mode 3)
Addition of Function Ring(Lens) to the menu
Note: For the SEL400F28GM lens, the APS-C S35/Full Frame Sel. setting is assignable to the Function Ring in addition to Power Focus.
Addition of Aperture Drive in AF to the menu
Note: With the SEL400F28GM lens, focus will not be locked even during continuous shooting at F-values greater than F11 under the following conditions: AF-C, electronic shutter, and the Aperture Drive in AF menu set to Focus Priority. Continuous shooting speed might be slow when the F number is over F11.

Adds the Write Serial Number option (On/Off) to the menu for selecting your preference in writing the serial number to the Exif data

Improves tracking performance of moving subjects in AF-C mode
Improves auto focus speed in low light
Adds AF Track Sens as a selectable option for custom key settings
Adds support for all focus areas when using LA-EA3 mount adaptor
(Focus Area options added: Zone, Expand Flexible Spot, and Lock-on AF)

Reduced release time lag when shooting with flash
Adds support for Slow Sync and Rear Sync when using flash wirelessly
Adds support for white balance automatic correction when using color filter of external flash (HVL-F60RM)