sudo dmidecode -t bios | grep "SMBIOS"
BIOS Information Vendor: Intel Corp. Version: S2600CP.86B.02.06.0001 Release Date: 10/15/2012 Address: 0xF0000 Runtime Size: 64 kB ROM Size: 8192 kB Characteristics: PCI is supported ... BIOS Revision: 2.6 Here, BIOS Revision: 2.6 sometimes confuses users. The true SMBIOS version is listed higher up or via the main dmidecode header. Always look for the line: The Future: Should You Upgrade from SMBIOS 2.6? If your production server is running SMBIOS 2.6, do you need to upgrade? The answer depends on your requirements. smbios version 26 top
System Information Manufacturer: Intel Corporation Product Name: S2600CP Version: 2.6 Serial Number: ... UUID: ... Wake-up Type: Power Switch SKU Number: Not Specified Family: Not Specified Notice the Version field under System Information is not the SMBIOS version. That is the motherboard revision. You need to check the section: sudo dmidecode -t bios | grep "SMBIOS" BIOS