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• Upgrading BIOS at run time is implemented by using two Serial Peripheral Interface (SPI) flash devices.
• One SPI device provides the active BIOS image, while the other flash device holds backup BIOS image.
• When the upgrade is initiated, new BIOS image is copied to the backup flash device. This ensures that the current BIOS image remains untouched. The recently updated flash device is marked as “Active” device. The flash device holding original BIOS becomes “backup” device.
• At the time of system reboot, the new BIOS is used for booting as it is marked as “Active” device.\
  
  

Info
icon false title Note
This functionality is implemented and controlled by BMC.

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On

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platform, the BIOS update takes less than five minutes. The flash update occurs when the host is running. The time to update firmware (BIOS or BMC) is defined as the flash programming time and does not include the time to transfer the firmware image to the SBC.

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