Hornet Songkey Mk4 Upd May 2026

The initial shipping firmware of the MK4 had round-trip latency (RTL) around 12ms at 64 samples. The v1.2.4 UPD reduces this to 8.3ms, making it competitive with devices twice its price.

Preparation:

Driver Update Process:

Firmware Update (Separate process via the Control Panel): hornet songkey mk4 upd

The plugin’s “display notes used” feature shows exactly which pitches were detected, helping students understand why a progression implies a certain key (e.g., presence of F# and C# suggests D major, not G major). The initial shipping firmware of the MK4 had

Solution: Go to Device Manager, uninstall all instances of "Hornet SongKey" (check "Delete driver software"). Reboot, then run the official installer again. Driver Update Process:

Solution: Open Terminal and run: sudo spctl --master-disable then reinstall. After success, re-enable Gatekeeper: sudo spctl --master-enable.