Christophe, the bios is updated to latest available version. On Lenovo x220 support website the version 1.42 is not available, for download is returned a file of version 1.40 (8duj25us) http://support.lenovo.com/pl/pl/products/laptops-and-netbooks/thinkpad-x-series-laptops/thinkpad-x220/downloads/DS018805
Christophe, the bios is updated to latest available version. On Lenovo x220 support website the version 1.42 is not available, for download is returned a file of version 1.40 (8duj25us) http:// support. lenovo. com/pl/ pl/products/ laptops- and-netbooks/ thinkpad- x-series- laptops/ thinkpad- x220/downloads/ DS018805