Interfit releases firmware when we add features or expand camera compatibility for supported lights and remotes. Choose your product below to open its download page with the latest Windows and Mac installers, step-by-step directions, and model-specific troubleshooting. Updates are cumulative, so installing the current release also includes improvements from earlier versions.

Before You Download

Confirm you are on the correct product page before running an updater. Each file is built for one model only, and using the wrong installer can trigger a device mismatch warning. Use the USB cable supplied with your unit, keep the light powered during the update, and follow the connection steps listed on that product page (some models require holding TEST or the power dial while plugging in).

Windows and macOS may block the updater because it is from an unrecognized developer. Use the security override steps on the product page if you see a blocked-file prompt. After updating a light that works with a separate TTL remote, check whether both the light and remote need the same firmware generation for proper TTL operation.

Related Resources

Setup diagrams and operating instructions are in our User Manuals library. If you are unsure which hardware you own, match the name on your unit to the tiles below, or contact US support Monday through Friday, 9am to 5pm PT at +1 (949) 359-6322 or [email protected].