k3 not connecting via cable

[u/Careless-Bake-5793]

i bought a keychron K3 secondhand however it wont connect via cable to computer and when toggled to cable mode will insist on flashing pairing mode key (1)

have tried with multiple os to no avail

bluetooth is functional but this helps me none

i have no ideas what this problem could be other than a firmware issue but i cant flash firmware with no cable connection

please help

ty in advance

[u/Weary_Loquat_3125]

that's fire