steps
what you'll need: USB drive or Sidus Link OTA.
11. Download firmware from aputure.com/downloads.
22. Copy to root of FAT32 USB drive.
33. Insert USB into the control box.
44. Enter System Menu and select Update Firmware.
55. Confirm update. Do not disconnect.
66. Alternatively use Sidus Link OTA.
GotchaNo Firmware Releases section found in LS 600x Pro help center navigation. GotchaVersion number could not be confirmed.