GP2040 HITBOX firmware link
(GP2040-CE_0.7.12_Pico.uf2 and GP2040-CE_0.7.11_Pico.v0.7.11_p5general_release_ 251108.uf2 , both works )
2: XIM, Reasnow and Hitbox need set to correctly mode.
XIM set to PS4 mode
Reasnow set to PS4 mode
HITBOX set to P5general mode(check manual and video to know how to config)
3: P5generally need insert into the correctly USB port of XIM, REASNOW and Hitbox
user can know correctly USB port from those official forum. or can know from this video.