BIOS Update
ASUS P10S-C/4L
It has been identified that systems running a BIOS version prior to 3104 may hang after a reboot. The BIOS must be
upgraded to version 3104 or later to prevent that.

Now that we are running into upgrade problems irrespective of the version/release because it is a bios issue,

ALL Support Engineers are requested to check the Motherboard and BIOS version before attempting an upgrade.

if the motherboard is P10 board and if the BIOS version is NOT 3104 dt.12/16/2016 or higher then exercise caution. The unit may hang while rebooting. So do not upgrade the unit if you do not have physical presence at the site to power cycle the unit in case it hangs.

The commands for identifying the same are given below. The only way out is to upgrade the BIOS version to 3104.


[root@chennai ~]# dmidecode -t 2
# dmidecode 2.9
SMBIOS 3.0 present.

Handle 0x0002, DMI type 2, 15 bytes
Base Board Information
        Manufacturer: ASUSTeK COMPUTER INC.
        Product Name: P10S-C Series
        Version: Rev 1.xx
        Serial Number: 161086290700004
        Asset Tag: To Be Filled By O.E.M.
        Features:
                Board is a hosting board
                Board is replaceable
        Location In Chassis: To Be Filled By O.E.M.
        Chassis Handle: 0x0003
        Type: Motherboard
        Contained Object Handles: 0


[root@chennai ~]# dmidecode -t BIOS
# dmidecode 2.9
SMBIOS 3.0 present.

Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
        Vendor: American Megatrends Inc.
        Version: 3104
        Release Date: 12/16/2016



Upgrade BIOS
1. Unzip the BIOS zip file ( P10S-C-ASUS-4L-3104.zip ) and put the contents on a Flash Drive in a folder named "BIOS".
2. Power on the system and keep pressing ALT+F2 until it opens up the EZ-Flash Utility.
3. Go into the BIOS directory on the flash drive.
4. Select the BIOS file ( P10S-C-ASUS-4L-3104.CAP ) and press Enter.
5. Select "Yes" to confirm flashing of the BIOS and press Enter.
6. It will now start updating the BIOS. Once it's done, it will prompt you to press Enter to reset the machine. Do that.
7. Keep pressing Del while the system is booting up to get into the main BIOS screen.
8. Set all BIOS settings to Our Optimized BIOS Settings.
Our Optimized BIOS Settings
Keep pressing Del while the system is booting up to get into the main BIOS screen.
Main tab
System Time, set using number keys and tab key
System Date, set using number keys and tab key
Advanced tab > Platform Configuration
Onboard LAN Configuration
All Intel LAN ROM Type options, set to "Disabled" (no PXE)
Serial Port Console Redirection
All Console Redirection options, set to "Disabled"
ACPI Settings
Enable Hibernation, set to "Disabled"
ACPI Sleep State, set to "Suspend Disabled"
APM
Restore AC Power Loss, set to "Power On"
Advanced tab > CPU Configuration
Active Processor Cores, set to "All"
Intel Virtualization Technology, set to "Disabled"
Intel(R) Speed Shift Technology, set to "Disabled"
Intel(R) SpeedStep(tm), set to "Disabled"
CPU C states, set to "Disabled"
To save the BIOS settings, press F10 to "Save Changes & Reset", select "Yes", and press Enter.