what you'll need: No firmware. DLED4 Bi (Turbo series) is a passive-cooling LED fixture with a simple LED driver ballast (DLSA4BI). No microcontroller firmware, no USB port, no app connectivity. Control is via onboard dimmer knob or DMX through the ballast.
GotchaDLED4 Bi (original Turbo series) is not the same as DLED4N Bi (NEO series). The NEO series ballast (DTneo+) is firmware-upgradeable via USB, but that is a different product line.
Gotchadedolight.com is currently dead (502 Bad Gateway). No official firmware portal is accessible.