If you already own a Vello LAE-SE-NF E-mount AF adapter with an earlier version of the firmware, here’s How to update Vello LAE-SE-NF adapter firmware.
Sony Releases Alpha 9 III Firmware Update 2.00
Sony releases Alpha 9 III Firmware Update 2.00 with long list of improved functions Applicable Model This information is for the following models: ILCE-9M3 About