Major improvements of Fringer EF-FX Pro III/II & EF-FX II v2.50:

Please visit the official web page to download the firmware file and release notes and update your adapter.
Major improvements of Fringer EF-GFX Pro v1.60:

Please visit the official web page to download the firmware file and release notes and update your adapter.
Major improvements of Fringer NF-FX II/I v1.90:

Please visit the official web page to download the firmware file and release notes and update your adapter.
Major improvements of Fringer NF-GFX v1.20:

Please visit the official web page to download the firmware file and release notes and update your adapter.