steps
what you'll need: Download .hex file matching display color variant; connect via mini USB to Mac or Windows desktop app; upload firmware
1Download Mac or Windows HiveUpgradeTool app from https://hivelighting.com/support/firmware/
2Download the correct .hex file: use 3.0.8A (GEN1.5) if your backcap display is GREY; use 3.0.8B (GEN1) if your backcap display is BLACK
3Open the Hive Lighting desktop app and connect the fixture to your computer with a mini USB cable
4Power on the fixture using its supplied power supply (DMX or Local mode both work)
5Mac: select the USB com port labeled 'usb.modemXXXX' in the dropdown; Windows: click Connect
6Verify 'Device Connected' status
7Select the downloaded .hex firmware file
8Click 'Upload Firmware' and wait 10+ seconds
9Detach USB cable and power cycle the fixture
GotchaTwo firmware variants: 'A' (GEN1.5 hardware, GREY display) and 'B' (GEN1 hardware, BLACK display), must match hardware revision GotchaMac app requires manual security approval in System Preferences > Security & Privacy GotchaLoading wrong variant for hardware gen is an explicit caution on Hive's page