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You may want to know:
How to update the bios? Please click here.
Besides downloading the bios file, you also need the Flash Utility to flash bios rom. (For files before Aug 2001)

  • CPU support list
  • For more FAQs about BIOS relationship, click here please.
  • You won't need to update BIOS until the latest bios has improve / fix some functions.
  • You won't need to upgrade through all of the BIOS files, just upgrade to the latest one please and it will include all previous improvments.
  • The CMOS data will be lost after flashing the BIOS. You may need to enter the BIOS setup screen and configure your system information after rebooting the machine.

Motherboard>Socket AM2>KN9S

BIOS: m520a23.zip  
Bios Issue Date:2007/11/19
Mirror Site: ASIA Europe US 
BIOS ID:23
 
  1. Support AMD LE-16xx series CPU.
  2. BIOS compiled date: 11/19/2007.
BIOS: kn922.zip  
Bios Issue Date:2007/09/04
Mirror Site: ASIA Europe US 
BIOS ID:22
 
  1. Fixed can not use PCIE3 issue.
  2. BIOS compiled date: 09/04/2007.
BIOS: kn921.zip  
Bios Issue Date:2007/07/31
Mirror Site: ASIA Europe US 
BIOS ID:21
 
  1. Update CPU micro code.
  2. Support Sempron LE series CPU.
  3. Recalibrate CPU temperature.
  4. BIOS compiled date: 07/31/2007
BIOS: kn920.zip  
Bios Issue Date:2007/05/02
Mirror Site: ASIA Europe US 
BIOS ID:20
 
  1. Recalibrate CPU temperature.
  2. BIOS compiled date: 05/02/2007
BIOS: kn919.zip  
Bios Issue Date:2007/02/27
Mirror Site: ASIA Europe US 
BIOS ID:19
 
  1. Update CPU micro code.
  2. Enhance compatibility with certain memories.
  3. BIOS compiled date: 2/27/2007
BIOS: kn918.zip  
Bios Issue Date:2007/01/16
Mirror Site: ASIA Europe US 
BIOS ID:18
 
  1. Update CPU micro code.
  2. Enhanced compatibility with Linux.
  3. BIOS compiled date: 1/16/2007
BIOS: kn917.zip  
Bios Issue Date:2006/12/07
Mirror Site: ASIA Europe US 
BIOS ID:17
 
  1. CPU multiplier adjusting function now works as intended after resuming from S3.
  2. Update CPU micro code.
  3. BIOS compiled date: 12/07/2006
BIOS: kn916.zip  
Bios Issue Date:2006/09/20
Mirror Site: ASIA Europe US 
BIOS ID:16
 
  1. Fixed the issue that the system sometimes may not be able to boot when install the CPU "ADA3800IAA5CU".
  2. Enhanced compatibility with certain memories.
  3. BIOS compiled date: 09/20/2006
BIOS: kn915.zip  
Bios Issue Date:2006/08/21
Mirror Site: ASIA Europe US 
BIOS ID:15
 
  1. The PCI-E3 slot of KN9 Ultra/S now works as intended.
  2. BIOS compiled date: 08/21/2006
BIOS: kn914.zip  
Bios Issue Date:2006/08/11
Mirror Site: ASIA Europe US 
BIOS ID:14
 
  1. Enhanced compatibility with certain memories.
  2. The Geforce 7950GX2 now works as intended.<
  3. The frequency of the PCI bus has been locked at 33MHz.
  4. BIOS compiled date: 08/11/2006
BIOS: kn913.zip  
Bios Issue Date:2006/07/13
Mirror Site: ASIA Europe US 
BIOS ID:13
 
  1. Fixed the issue that the system sometimes hangs on POST. code 50 when install the FX62 with USB device.
  2. Fixed the issue that the system performance may drop off when install a PCI device.
  3. BIOS compiled date: 07/13/2006
BIOS: kn912.zip  
Bios Issue Date:2006/06/15
Mirror Site: ASIA Europe US 
BIOS ID:12
 
  1. First release
  2. BIOS compiled date: 06/15/2006
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