Thanks for your answer. What is EC and how can I know what version it is ?
I found this topic " Librem 14: How to fetch EC firmware version? but solution indicated doen’t work (return message “Could not find command-not-found database. Run ‘sudo apt update’ to populate it. fetch: command not found”
I did upgrade and same message…
One step forward 
: I installed purism_ectool and got that :
board: purism/librem_14
version: 2021-05-25_3b5ef1e
On above mentioned topic, version is “1.9_2022-06-30”
So I suppose that I’d better update it, I’ve just got to find out how to do it 