Lenovo ThinkPad E555 BIOS Update Utility 1.23 Aug 17, 2017
... - (Fix) Fixed an issue of lock UEFI BIOS settings. - (Fix) Fixed an issue that Fn+S have no function issue. About BIOS Update Utility: Applying a new BIOS version can bring various fixes, add new features, ... really needed. Moreover, it is recommended that the BIOS be upgraded by someone who has the ability ...