Trouvé ça:
It is also important to understand that Thinkpads from IBM have two separate firmwares: the BIOS, and the Embedded Controller program. A given BIOS version will require a certain version of the Embedded Controller program. The IBM documentation is sometimes unclear about the order in which these two firmwares should be updated. On most, but not all Thinkpads, the correct update order is Embedded Controller program first, and then the BIOS. Make sure to do the two updates immediately one after the other. Newer models from Lenovo update both the Embedded Controller program and the BIOS at the same time, so you don't have to worry about it.
ça parle de thinkpad mais a l'air valide pour toi