Mesa 5i25 and 7i76

Right, unless you have separate VIN and VFIELD, W1 must be in the left hand position

Also, if the 5I25 firmware needed updating (if you got the cards as a set, this is not necessary)
you need to power cycle the PC to load the new firmware, or use mesaflash's --reload command:

sudo mesaflash --device 5i25 --reload

Wow, does it work.

I second flight the example here:

softsolder.com/?s=mesa

Andy thank you et PCW.

English is not my Maternal language.
Not easy to understand the mesa system.
After my tests, I'll be ok

I surely will come back later to ask more questions