what you'll need: No firmware update mechanism published for SoftLED 8 VW on desisti.it. DMX-controlled (3 channels: dimmer, CCT, mode). Factory update only.
GotchaSoftLED 8 VW is Vari-White only (2800-6600K), not VW+Color. If the fixture in use is an S8 VWC, firmware 4.1 applies (see VWColor range entry).
GotchaManual available at http://www.desisti.it/wp-content/uploads/2018/10/CE-Instruction-Manual-De-Sisti-SOFT-LED-8VW.pdf