The current release version is version 1.66. The following is the change logs:

1.66

Add    - (ITS:0194445) Secure Boot settings are accessible even when Supervisor Password is disabled.

1.65:

Add    - (ITS:019035-0591354) Follow the ITS #0189692 SMBIOS fields re-writable.

1.64:

Update - (ITS:0190357) PCSystemType incorrectly reports as 'Mobile' (2) on static HX401 platform.

Update - (ITS:0190356) H2OSDE Tool - Not allowing Update of SKU Number.

1.63:
  1 Add     - (ITS:0187152) RS-422 and RS-485 are not functional.
              (1) Add RS-422 option to the Peripheral Type of UART Port 1 configuration.
              (2) Add the RS-422 related configurations.
              (3) Add RS485 Auto Flow Control.

1.62:

Fix    - (ITS:0186199) RS485 & RS232 (Terminated) does not retain BIOS setting, and does not work.

1.61:

Add    - (ITS:0168927) EFI Boot Order Change.

Update - Remove unused Secure Flash Keys to make it easier for the customer to replace the key.

1.60:

Update - (ITS:0131636) Support both NCT5525D version A and version B in single BIOS.

1.59:

Update - (ITS:0133474) update to mainline Copper UEFI.

1.58:

Fix    - (ITS:0131427) Bios downgrade failed when secure flash is enabled.
         When using H2OFFT update BIOS, the Model Name and BIOS version are lost.

1.57:

Update - Update code base to chipset SVN Tag 05.44.34.1058:
           SiC             0C.00.D5.50
           FSP             0C.00.D5.50
           MRC             0.0.4.219   
           Microcode       m_80_906a3_00000434
                           m_80_906a2_00000315
           CSME            Intel_CSME_ADL-P_M_16.1.32.2418_A0_Corporate

Update - (ITS:0127681) [Copper] COM PORT SETTINGS BEHAVIOR CHANGE.

Update - (ITS:0128391) Enable automatic failover as the default BIOS setting.

1.56:

Update - (ITS:0121393) Hiding the Secure Boot Menu in UEFI landing page.
         1. Hide "Secure Boot Administration" menu from landing page.
         2. Include Microsoft Secure Boot components.
         3. Add Secure Boot [Disabled] and hide it.

Update - (ITS:0124089) Copper Point Secure Boot UEFI.
         1. Unchecked Internal UEFI Shell.
         2. Enable Secure Flash.