BIOS 49 Updates:

• Removes shutdown action when enabling Virtualization Technology
• Sets ICH Voltage to 1.1v as Default

BIOS updating can be accomplished VIA the below methods:

CD/DVD Installation - Recommended installation method

• 
  Download the correct .iso file below for your motherboard:

         170-BL-E762-A1 - EVGA X58 Classified 4-Way SLI
         141-BL-E760-A1 - EVGA X58 Classified
         141-BL-E759-A1 - EVGA X58 Classified
         132-BL-E758-A1/TR - EVGA X58 SLI
         141-BL-E757-TR - EVGA X58 SLI LE
         121-BL-E756-TR - EVGA X58 SLI Micro

• 
  Use a CD Burning software to burn the .iso image onto a blank CD (Nero, Alochol 120%, MagicISO etc.)
• After it has burned, insert CD and restart the machine, go into the BIOS and load defaults, save and exit
• Now set the CD Drive as the primary boot device, or press escape while the system is booting to select CD as the bootable device.
• After flash remove the CD, and power off PC Completely.
• Turn on the PC and load defaults in BIOS

USB FLOPPY Installation - Recommended installation method

• Download the correct .exe file below for your motherboard:

         170-BL-E762-A1 - EVGA X58 Classified 4-Way SLI
         141-BL-E760-A1 - EVGA X58 Classified
         141-BL-E759-A1 - EVGA X58 Classified
         132-BL-E758-A1/TR - EVGA X58 SLI
         141-BL-E757-TR - EVGA X58 SLI LE
         121-BL-E756-TR - EVGA X58 SLI Micro

• Insert blank floppy disk into drive and run executable
• After the floppy has written fully, restart the machine, go into the BIOS and load defaults, save and exit
• Now set the USB Floppy as the primary boot device, or press escape while the system is booting to select USB Floppy as the bootable device
• After flash remove the floppy, power off PC Completely
• Turn on the PC and load defaults in BIOS

USB Flash Drive Installation - Alternate installation method

• Download the correct .bin file below for your motherboard:

         170-BL-E762-A1 - EVGA X58 Classified 4-Way SLI
         141-BL-E760-A1 - EVGA X58 Classified
         141-BL-E759-A1 - EVGA X58 Classified
         132-BL-E758-A1/TR - EVGA X58 SLI
         141-BL-E757-TR - EVGA X58 SLI LE
         121-BL-E756-TR - EVGA X58 SLI Micro

• Visit this thread and follow the installation instructions. (thanks 30h6).

Warning:
**Do not restart or interrupt your PC while the flash is ongoing
**Do not Flash BIOS on overclocked settings
**It is always recommended to power-down after flash and Clear CMOS