For the modern DJ, the gear is only as good as its software. The has become a staple in the beginner-to-intermediate controller market thanks to its four-channel mixer layout, built-in FX paddles, and rugged build quality. However, many users unbox their unit, plug it into Serato DJ Pro or Virtual DJ, and never think about the firmware again.
As of mid-2025, the latest stable firmware version is (check the Numark website for the absolute latest). If you see v1.0, v1.1, or v1.2, you need to update. numark ns4fx firmware update
The NS4FX ships as a "Serato-ready" controller, but many DJs prefer Virtual DJ for its STEM separation features. For the modern DJ, the gear is only as good as its software
: Intermittent audio dropouts can often be fixed by updating your DJ software ( Serato or Virtual DJ) and adjusting the audio buffer size in your software settings. As of mid-2025, the latest stable firmware version
Turn off the NS4FX completely. Unplug the USB from your computer. Step 2: Hold down the Pitch Bend - and Sync buttons simultaneously (check the manual PDF for the exact combo, as it varies by version). Step 3: While holding those buttons, plug the USB back in. Launch the updater tool. Click "Update."