New ULTRA CRI expanded CCT range 1750K-14500K (50K steps); new mode-selection menu in manual/local control; new LAST DMX memory retains last DMX command after power-off; new SIMPLE MODE (single channel combining VW+C and VW+Sat); encoder navigation added; +/-green combined into single DMX channel in ULTRA CRI, VW+SAT, SIMPLE modes; bug fixes.
steps
what you'll need: No public firmware file download on desisti.it. Announcement only. Contact DeSisti factory (luciano_pepe@desisti.it or factory contacts at https://www.desisti.it/factory-contacts/) to obtain the firmware file. The F7rp manual references a 'PGM PORT for Firmware Upgrade' suggesting a dedicated programming port exists on the fixture rear panel.
11. Contact DeSisti factory to request firmware 4.1 file for your specific VW+C fixture model (F4.7 VWC, F7 VWC, F10 VWC, S4 VWC, S8 VWC, etc.).
22. Locate the PGM port on the rear panel of the fixture (referenced in F7rp instruction manual as dedicated firmware upgrade port).
33. Follow factory-provided instructions to flash via PGM port connection.
44. Alternatively, firmware can be updated via DMX/RDM per the LED Leo retrofit kit documentation which states: 'Firmware for both the CPU and driver can be updated through DMX/RDM across groups of fixtures.'
GotchaNo downloadable firmware file is publicly available on desisti.it as of 2026-05-26. The 2023 announcement is the only public reference to firmware 4.1.
GotchaThe VW+C range covers: F4.7 VWC, F7 VWC, F10 VWC, S4 VWC, S8 VWC, S12 VWC, S2XL VWC, S8XL VWC. No F6VWC exists in this range.
GotchaItalian version of the firmware announcement: https://www.desisti.it/it/non-categorizzato/per-il-nostro-41-compleanno-de-sisti-lancia-il-nuovo-firmware-no-4-1-per-i-dispositivi-vw-c
GotchaDeSisti was founded in 1982, their '41st birthday' in April 2023 confirms the 4.1 firmware date.