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BIOS & FIRMWARE

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BIOS
X99-A Beta BIOS 4101
Version 4101
7.92 MB
2019/07/17

Updated uCode for Intel security issue.

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X99-A BIOS 3902
Version 3902
7.94 MB
2018/04/26

Beta BIOS
Update CPU Microcode for Intel security issue.

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X99-A BIOS 3801
Version 3801
7.92 MB
2017/12/04

-Improved DRAM stability
-Fix Logitech devices issue.
-Fix Intel I211 Lan issue*
*only for models equipped with Intel I211 Lan chip

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X99-A BIOS 3701
Version 3701
7.92 MB
2017/05/26

Fixed memtest86 issue
Fixed Plextor device issue

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X99-A BIOS 3505
Version 3505
7.92 MB
2017/03/10

1.Improve System Performance.
2.Improved DRAM compatibility
3.Fixed TPM issue
4.Add in turn-off function of LED under S3/S4/S5 status.
5.Fixed Samsung device (SM961, printer) issues.

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X99-A BIOS 3402
Version 3402
7.92 MB
2016/09/23

Improve system stability

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X99-A BIOS 3301
Version 3301
7.89 MB
2016/07/25

Improve system compatibility

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X99-A BIOS 3101
Version 3101
7.87 MB
2016/05/12

Support the latest Intel® Core™ i7 X-Series processors.
Improve system stability.

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X99-A BIOS 3004
Version 3004
7.94 MB
2016/04/13

Support the latest Intel® Core™ i7 X-Series processors.

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X99-A BIOS 2101
Version 2101
6.14 MB
2016/01/06

Improve system stability.

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X99-A BIOS 2001
Version 2001
6.14 MB
2015/11/19

Improve system stability.

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X99-A BIOS 1901
Version 1901
6.14 MB
2015/09/14

Improve system stability.

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X99-A BIOS 1801
Version 1801
6.14 MB
2015/06/26

Support 16GB DDR4 memory modules.

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X99-A BIOS 1702
Version 1702
7.13 MB
2015/04/15

1Support ASUS Hyper Kit
2.Improve system stability.

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X99-A BIOS 1402
Version 1402
7.13 MB
2015/03/27

Improve system stability

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X99-A BIOS 1401
Version 1401
7.12 MB
2015/02/17

1.Support ASUS USB 3.1 PCIE add-on card
2.Support NVMe

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X99-A BIOS 1203
Version 1203
7.07 MB
2014/12/19

Improve system stability.

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X99-A BIOS 1004
Version 1004
7.05 MB
2014/10/23

1. Update EC FW
2. Fix crash free issue
3. Fix Xonar card compatibility issue
4. Revise Thunderbolt memory resource
5. Enhance Xeon CPU compatibility
6. Rebuild SteamOS boot option

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X99-A BIOS 0502
Version 0502
7.05 MB
2014/10/11

Improve system stability.

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X99-A BIOS 0402
Version 0402
7.05 MB
2014/09/24

1. Update Intel ucode
2. Enhance USB compatibility
3. Enhance system stability
4. Fix WHQL secure boot
5. Fix Xeon CPU DRAM frequency info
6. Add SATA controller RAID mode support info

*Note: Strongly recommend to use USB BIOS Flashback or EZ Flash 2 in BIOS to update the BIOS.
For more guidelines, visit http://event.asus.com/2012/mb/USB_BIOS_Flashback_GUIDE/

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X99-A BIOS 0216
Version 0216
7.04 MB
2014/08/29

First release Bios

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