RME Fireface UFX+

Download the RME Flash Update Tool for your OS (Mac: fut_usb_tb_mac.zip, Windows: fut_usb_tb_win.zip) from the RME downloads page. Connect the Fireface UFX+ via USB or Thunderbolt. Run the Flash Update Tool and follow on-screen instructions. Two hardware revisions exist (AKM and ESS chip variants) — the tool detects the variant automatically. Do not interrupt power during flashing.