Bmc Svn Downgrade Switch (Bmc_Svn_Dg - S5) - Intel M50CYP2SB Series Technical Specification

Intel® Server Board M50CYP2SB Family Technical Product Specification
13.6 BMC SVN Downgrade Switch (BMC_SVN_DG – S5)
When BMC SVN Downgrade Switch (switch 1) is moved from its default Off position to the On position, it
allows the system BMC firmware in the PFR-controlled BMC capsule file to be downgraded to a lower
Security Version Number (SVN). This switch is used when there is a need for the system to power on using
BMC revision with lower SVN.
Caution: Downgrading to a BMC version with lower SVN may result in the loss of functionality and security
features that are present in a higher SVN but were not implemented in the lower SVN.
Caution: When downgrading to an older version of BMC, modules may end up with a firmware stack
combination that is not supported, and therefore could experience unpredictable behavior.
Caution: Switch 2 is for debug purposes and must not be changed from its default Off position.
Note: Latest system update packages are included in the SUP posted to Intel's download center website at
http://downloadcenter.intel.com
To use the BMC_SVN_DG Downgrade switch, perform the following steps:
1. Remove the chassis top cover.
2. Remove the air duct, if needed.
3. Remove the riser assemblies from the system, if needed.
4. Using a tweezers, move "BMC_SVN_DG" (S5) switch 1 to the On position.
5. Reinstall the riser assemblies, if needed.
6. Reinstall the air duct, if needed.
7. Reinstall the chassis top cover.
8. Power on the system. The system automatically boots to the EFI shell.
9. Update the BIOS using the standard BIOS update instructions provided with the system update
package.
10. After the BIOS update has successfully completed, power down the system.
11. Remove the riser assemblies from the module.
12. Remove the chassis top cover.
13. Remove the air duct, if needed.
14. Using a tweezers, move "BMC_SVN_DG" (S5) switch 1 back to the Off position.
15. Reinstall the riser assemblies, if needed.
16. Reinstall the air duct, if needed.
17. Reinstall the chassis top cover.
18. Power on the system. During POST, press <F2> to access the BIOS Setup utility to configure and save
desired BIOS options.
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