I've seen a few people asking about the LVC "level" settings on the new Firma 120 V2 ESC in the 4S V2.5 lineup. The below were pulled straight from the Spektrum USB link program using the ESC Programmer V2. Here you go.
Level 1 = 3.2
Level 2 = 3.3
Level 3 = 3.4
Level 4 = 3.5 (Out of box default)
Level 5 = 3.6
Level 6 = 3.7
Level 1 = 3.2
Level 2 = 3.3
Level 3 = 3.4
Level 4 = 3.5 (Out of box default)
Level 5 = 3.6
Level 6 = 3.7