Config Error: INS: unable to initialise driver on vr brain

Hello, I’m trying to use an old vr brain 5.2 I found.
It was working great first, but now I get this error
Config Error: INS: unable to initialise driver

I tried with different computers, reupload the firmware, change the INS_enable_mask… Nothing change.

What can I do?

Thank you

Hello,

Can you confirm firmware used?

I have one with latest Rover 4.2.3 (upgraded from plane version) and it look OK.

Here is the hardware ID screen, there is no GPS attached (with external compass).

Hello, thank you for the answer. I finally clicked on the magic button : reset to default (the parameter list).
And now it’s working …