Sony released a new firmware update for the A7s III. The things they’ve nipped:

  • Fixes an issue where FTP transfer could fail when used with some USB-LAN conversion adapters
    Note:Not all USB-LAN conversion adaptors are guaranteed to operate properly
  • Improves connection stability of USB tethering when using an iPhone
    Notes:
    • Currently, the USB tethering function does not support iOS 14
    • We recommend using a smartphone and USB cable that support USB-PD (USB Power Delivery)
  • Improves the overall stability of the camera