The parameter knobs (Filter, Color FX) now map correctly without "midi jumping" when switching between the two pieces of software. If you’ve ever turned a knob and heard the volume spike for no reason—that’s a firmware issue, not a hardware issue. How to update (In 3 painless steps) Don't be intimidated. Updating the NS4FX is not like updating a laptop. It takes about 90 seconds.

Wait for the progress bar to hit 100%. Do not touch the power switch during this process. There is one bug in the latest version that the community has flagged: The Crossfader curve control.

The NS4FX is a budget-friendly workhorse, but like any computer peripheral, it needs software love. This firmware update makes the platters feel tighter, the lights flash on time, and prevents those annoying software crashes during a gig.

But here is a question for you: When was the last time you checked your firmware?

Most DJs buy a controller, plug it in, and never look back. However, Numark has been quietly rolling out for the NS4FX that fix bugs, improve latency, and even unlock smoother performance with Virtual DJ and Serato DJ Pro .

Some users feel the "Sharp" curve isn't quite as sharp post-update as it was on the factory firmware. If you are a hardcore scratch DJ who relies on instant cut-in, you might want to stay on the previous version. For everyone else (open format, EDM, mobile DJs), the stability gains are worth it. Yes. Unless you are a professional scratch competitor, hit the update button.