steps
what you'll need: Fiilex Manager V2.4 desktop app via USB-A to USB-C cable
1Download Fiilex Manager V2.4 for Windows or Mac from fiilex.com/support/firmwareUpdates.php
2Install: Windows double-click installer; Mac drag to Applications and bypass Gatekeeper
3Connect K10 to PC/Mac with USB-A to USB-C cable
4Launch Fiilex Manager, auto-detects fixture and loads latest firmware
5Click Update; do not unplug during update
6Power-cycle fixture after completion
7Verify at fixture: Setting > Info
GotchaListed on firmware page as 'K10 COLOR', same fixture as K10 GotchaUSB-A to USB-C only; USB-C to USB-C will not work GotchaFirmware below V2.5: contact Fiilex support before updating GotchaMac: Gatekeeper blocks unsigned app, Security & Privacy > Open Anyway required