问题描述：从官网下载的该序列号的对应版本的BIOS更新程序，重启更新时报错： “更新BIOS 签名认证失败”   产品名称：HP EliteDesk 800 G4基本机型工作站版 序列号: 4CV920WSLV 产品编号: 3WL78AV 系统属性：   <p> OS Name Microsoft Windows 10 专业工作站版 Version 10.0.19045 Build 19045 Other OS Description Not Available OS Manufacturer Microsoft Corporation System Name HP-WKS System Manufacturer HP System Model HP EliteDesk 800 G4 WKS TWR System Type x64-based PC System SKU 3WL78AV Processor Intel(R) Core(TM) i5-8500 CPU @ 3.00GHz, 3000 Mhz, 6 Core(s), 6 Logical Processor(s) BIOS Version/Date HP Q01 Ver. 01.11.01, 2020/4/27 SMBIOS Version 3.1 Embedded Controller Version 7.208 BIOS Mode UEFI BaseBoard Manufacturer HP BaseBoard Product 83E0 BaseBoard Version KBC Version 07.D0.00 Platform Role Desktop Secure Boot State On PCR7 Configuration Elevation Required to View Windows Directory C:\Windows System Directory C:\Windows\system32 Boot Device \Device\HarddiskVolume7 Locale China Hardware Abstraction Layer Version = "10.0.19041.5072" User Name HP-WKS\Albre Time Zone China Standard Time Installed Physical Memory (RAM) 16.0 GB Total Physical Memory 15.3 GB Available Physical Memory 8.98 GB Total Virtual Memory 18.7 GB Available Virtual Memory 9.65 GB Page File Space 3.38 GB Page File C:\pagefile.sys Kernel DMA Protection Off Virtualization-based security Not enabled Device Encryption Support Elevation Required to View Hyper-V - VM Monitor Mode Extensions Yes Hyper-V - Second Level Address Translation Extensions Yes Hyper-V - Virtualization Enabled in Firmware Yes Hyper-V - Data Execution Protection Yes </p>