Sony a7 III Firmware Update 4.00 Adds FTP Transfer

Sony has released a7 III Firmware Update 4.00 which adds FTP Transfer. Mac users please note, this update is compatible with MacOS 10.14, 10.15 & 11

Applicable Model


About this download

NOTE: Before downloading the software, we recommend that you create a Sony account. After creating a Sony account or signing in with your Sony account, download the software (For customers in the USA).

Benefits and Improvements

IMPORTANT: When you update to this version, FTP transfer setting will be initialized. Please reconfigure after the update.

Adds new features of FTP transfer
• Allows you to transfer still images during shoot and playback operations.
• Adds the following FTP transfer functions:
• Allows you to narrow down the transfer target, such as protected images or non-transferred images, and transfer the images together as a batch.
• Allows you to transfer only the image being played back by pressing the custom key.
• Allows you to transfer all images automatically while shooting.
• Allows you to select the setting to transfer both RAW file and JPEG taken in RAW+JPEG format to an FTP server.
• Update the destination folder configuration.
• Allows you to register up to nine FTP servers. (Previous was up to 3)
• Allows you to change the destination folder configuration on the FTP server:
• Save image data directly under the folder that you choose.
• Register the media card slot number in the folder configuration.
• Register the folder configuration same as your camera.
• Improved operability of FTP transfer function.
• Allows you to set items under Server Setting by using the smartphone application Transfer & Tagging add-on.
Improves the overall stability of the camera.

NOTE: The Transfer & Tagging add-on is only available in certain countries and regions.
For additional information regarding updated function usage, refer to the Help Guide.

Previous Benefits and Improvements

[All Previous Benefits and Improvements are also included in this Update]

File Name

ILCE-7M3 System Software (Firmware) Update Ver. 4.00

File Version


Release Date


Download Links:

Download a7 III FW 4.00 for MAC | WIN


System Requirements

The latest version of the system software update is compatible with the following Macintosh versions:
MacOS 10.14, 10.15, 11

Computer Hardware

The latest version of the system software update is compatible with the following hardware:
Mac with an Intel processor (Mac with Apple silicon is not supported)
Hard drive space: 700 MB or more
RAM: 700 MB or more

Download the Sony Camera Driver:

Visit the Sony Camera Driver download page.
Click the Download button.
NOTE: The Camera_Driver_2102a.dmg file will start downloading.
Save the file to the desktop of your computer (recommended).
File Size:130KB (129 582 byte)
After reading the disclaimer, click Download.

How to download the Updater:

Click the Download button above.
After reading the disclaimer, click Download.
NOTE: The Update_ILCE7M3V400.dmg file will start downloading.
Save the file to the desktop of your computer (recommended).
File Size:315.9MB (315 889 936 byte)

How to Install the Sony Camera Driver

Close all programs currently running on your computer.
Double-click the Camera_Driver_2102a.dmg file you downloaded. Do not connect the camera at this point.
NOTE: If you have connected the camera to a computer, disconnect it before following the procedure.
The Sony Camera Driver Installer is expanded.
Double-click the SonyCameraDriver.pkg icon.
The installer screen opens. Proceed as instructed.

Before Updating Firmware Please Read:

Bulletproof Guide to Sony Camera Firmware Updates

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4 thoughts on “Sony a7 III Firmware Update 4.00 Adds FTP Transfer”

  1. Thank You, new year time to check all cameras AND lenses for updates, time to look at all support pages.
    Do you think Sony can update the menu system to the new ladder type on the A7iii and others?

    1. That’s NOT gonna happen. But I would expect it on all future cameras with the Bionz XR processors

    1. If it was going to happen as a firmware update it would have happened by now.
      Like a7R IV, I’d expect it in a7 IV.

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