what you'll need: No user-facing firmware update provided. The SL1 SWITCH is a bi-color (tungsten/daylight) fixture, it does not use MIX technology and has no Bluetooth or USB firmware update path published by Rosco.
GotchaSL1 SWITCH is NOT part of the MIX firmware family, it is a separate bi-color fixture.
GotchaRosco's firmware page (node/39695) does not list the SL1 SWITCH as a supported model.
GotchaResources on the SL1 SWITCH page include only a data sheet, user manual, IES files, and GDTF/MVR profiles, no firmware download.