: It is used to clear "(INVALID)" or blank serial number errors in the BIOS. Legacy Boot Requirement
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: For standard BIOS updates (not ID changes), always use the official Lenovo BIOS Update Utility . How to use official Lenovo tools If you need to update drivers or system firmware safely: Visit the Lenovo Support site. : It is used to clear "(INVALID)" or
: It generally requires Legacy Boot mode; many users report it does not work on post-2020 UEFI-only laptops unless specific workarounds are used. Safety and Security Note : For standard BIOS updates (not ID changes),