NOTE: Check your BIOS version in the 1st BIOS screen "Main"
Mine was 2.0 from 2014

Updated to latest version Today 2017-12-26 (v3.0a Signed 17/12/2015)

Below is a section of the read me file with my NOTES:

1. Save <filename>.zip file to your computer.
NOTE: BIOS flash <filename>.zip can be found from the Board page
http://www.supermicro.com/products/motherboard/Xeon/C220/X10SLH-F.cfm
Clicking "Update your BIOS"

2. extract the .zip files to a DOS bootable device (such as a bootable USB stick, or CD).
NOTE: I used RUFUS to create a FAT32 FreeDOS bootable USB drive
Then extracted the .zip files to the Root directory

3. Boot to a DOS prompt and type AMI.BAT BIOSname.###
NOTE: The BIOSname.### is the BIOS file extracted from <filename>.zip file
e.g. x10slh5.C17
see read me file for naming conventions of the file

4. Do not interrupt the process until the flashing is complete.
NOTE: THERE ARE SEVERAL NOTIFICATIONS like xxx Done!
Wait for the last one saying
ME Entire Image Update success

5. After you see the message of BIOS has completed the update, unplug the AC, clear the CMOS and plug in the AC and power on the system.
NOTE: The PIPELINE X10SLH does NOT have an actual pin or jumper to short but just soldering drop in the motherboard near the SATA ports (refer to user manual for exact location

6. Go to the BIOS setup screen and press F9 to load the default and press F10 to save and exit.
NOTE: The BIOS last "Save and Exit"screen has a Load Default configuration

Good Luck!!