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Gigabyte motherboard BIOS version, F3 or F5?

My desktop has been experiencing random hard reboots for about 2 weeks (roughly once a day).

  • Motherboard: Gigabyte GA-F2A55M-DS2 v1.0
  • CPU: AMD A4-5300
  • BIOS version: F3, dated 2012-09-28

My question is about the BIOS.

This info from Gigabyte states Since BIOS Version as F5 for my CPU. I don’t know what that means exactly. Why do I have F3 when this listing states F5? Does this mean it would be prudent for me to update from F3 to F5?