Enables use of “My Menu” to save or load custom camera settings.So something has definitely been tweaked here even though Sony has not specifically mentioned it. I’ve now run my tests again with v4.00 and the write speeds have increased from 107.27MB/s to 132.50MB/s, but this is still short of the 147.53MB/s achieved by the now obsolete Sony SF-G UHS-II SD Cards (the none Tough version). In my Sony a7III Memory Card Guide where I speed tested a number of SD cards in-camera, I noticed that the Sony SF-G Tough UHS-II SD Cards were not writing uncompressed raw files as fast as they should have been with firmware v3.10. Improves the overall stability of the camera.Allows you to set items under Server Setting by using the smartphone application Transfer & Tagging add-on.Improved operability of FTP transfer function.Register the folder configuration same as your camera.Register the media card slot number in the folder configuration.Save image data directly under the folder that you choose.Allows you to change the destination folder configuration on the FTP server:.Allows you to register up to nine FTP servers.Update the destination folder configuration.Allows you to select the setting to transfer both RAW file and JPEG taken in RAW+JPEG format to an FTP server.Allows you to transfer all images automatically while shooting.Allows you to transfer only the image being played back by pressing the custom key.Allows you to narrow down the transfer target, such as protected images or non-transferred images, and transfer the images together as a batch.Adds the following FTP transfer functions:.Allows you to transfer still images during shoot and playback operations.Sony a7III Firmware Update v4.01 Previous Firmware Versions v4.00