Sony released firmware updates for a9, a7R III, a7 III, a7R II, a7 II, a7S II, a6500 and a99 II cameras.
‘Benefits and Improvements’ list the rather vague “Improves the overall stability of the camera”. I suspect this relates to wireless flash systems since these cameras (and only these cameras) share the same wireless flash protocols. It’s likely not a coincidence that these updates were released one day after the Profoto A1X AirTTL-S flash for Sony, which just happens to be compatible with these exact cameras.
Bear in mind that there are often additional improvements included in each firmware update, so I highly recommend these updates for all users.
Sony a9 Firmware 5.01 for MAC | WIN
Sony a7 III Firmware 3.01 for MAC | WIN
Sony a7R III Firmware 3.01 for MAC | WIN
Sony a7 II Firmware 4.01 for MAC | WIN
Sony a7R II Firmware 4.01 for MAC | WIN
Sony a7S II Firmware 3.01 for MAC | WIN
Sony a6500 Firmware 1.06 for MAC | WIN
Sony a99 II Firmware 1.01 for MAC | WIN
MAC USERS PLEASE NOTE:
The latest Sony Firmware Updates are only compatible with Mac OS 10.12 – 10.14
You must first run UpdateSettingTool and follow the prompts to run it.
[UpdateSettingTool replaces Mac OS 10.13 Driver Loader from earlier firmware versions.]
1. Make sure the camera’s USB Connection is set to Mass Storage
2. WITHOUT CONNECTING THE CAMERA, Click on UpdateSettingTool.
3. Once you see this message, connect the camera.
4. When the above message goes away, click on the Resources Folder, click on “SystemSoftwareUpdater” and follow prompts to begin the firmware update.
Before Updating Firmware Please Read:
Order Sony a9 from B&H Photo | Amazon
Order Sony a7 III from B&H Photo | Amazon
Order Sony a7R III from B&H Photo | Amazon
Order Sony a7 II from B&H Photo | Amazon
Order Sony a7R II from B&H Photo | Amazon
Order Sony a7S II from B&H Photo | Amazon
Order Sony a6500 from B&H Photo | Amazon
Order Sony a99 II from B&H Photo | Amazon