Dual Here4 gps bad gps fix issue

Hi everyone,

we have a cube orange+ with dual here4 modules for redundancy. ardu 4.4.4

each one in each can port with external 5.3V power.

one of them, gp1 always with gps bad fix issues. the other, perfect, 30 or more sats.

i have updated the both here4 firmware by mission planner to latest 1.13…

and the issues still happens

any solution please?

maybe a faulty unit of here 4?