BIOS and firmware description for the 10ZiG 45xx Thin Client

BIOS

The 45xx has an interesting BIOS. When you get into it the top line of the screen identified it as InsydeH20 Setup Utility Rev. 5.0. In the Linux dmesg text I find the line:

DMI: 10ZiG Technology. 4500/Type 2 - Board Product Name, BIOS V:3.1.21-08212018 08/30/2018

The default password (when set) is 10ZIG

Hit the ESC key on power-up to get to the startup screen. This is shown below.

There are six icons shown on the screen with the currently selected one being highlighted.

Continue as you'd expect continues with the normal start up process.
Boot Manager lets you select the boot device for this particular boot.
Device Management lets you configure various devices.
Boot from file lets you boot a specific OS or recovery file from disk.
Secure Boot Option for setting up a UEFI secure boot.
SCU (System Configuration Utility) takes you into a more conventional BIOS screen.

The Boot Manager screen lets you pick the boot device for this particular boot. Essentially it lists the potential bootable devices that it finds. In this particular example I had a USB drive plugged in:


Boot Option Menu

Legacy Hard Drive
  M62704
Legacy USB
  SanDisk
EFI Boot Devices
  EFI USB Device (SanDisk)
  Internal EFI Shell

↑ and ↓ to change option. Enter to select an option. ESC to exit.

Device Manager does not do a lot.


Devices List                               Select the network device according the
                                           MAC address
Press ESC to exit

Boot from File: I haven't attempted to get my mind around these strings of parameters...

NO VOLUME LABEL,
[PciRoot(0x0)/Pci(0x10,0x0)/Ctrl(0x0)/Uint(0x0)/HD(1,MBR,0x26F41EF7,0x10,0xF470)]
TINYCORES,
[PciRoot(0x0)/Pci(0x14,0x0)/USB(0x0,0x0)/HD(1,MBR,0x0C458A11,0x800,0xEDC70B)]
PTN2, [PciRoot(0x0)/Pci(0x14,0x0)/USB(0x0,0x0)/HD(2,MBR,0x0C458A11,0xEDCF0B,0x800)]

The Secure Boot option brings up the Administer Secure Boot screen. Note the misspelling of 'varialbes' is BIOS author's error, not mine!


System Status:                                                       Enable this option will erase all Secure
                                                                     Boot Settings. This action will clear
Secure Boot Database            Unlocked                             four varialbes PK, KEK, db, and dbx.
Secure Boot Status              Disabled
User Customized Security        No

Options:

Select a UEFI file as trusted for execution
Enforce Secure Boot                       <Disabled>
Erase all Secure Boot Settings            <Disabled>
Restore Secure Boot to Factory Settings   <Disabled>

Finally SCU (System Configuration Utility) takes you into the usual BIOS screens the prime one of interest being the boot screen. This lets you set the type (Dual, Legacy or UEFI), boot order and whether USB booting is enabled or disabled.

BIOS Reset

As noted under the hardware tab there is an inline connector near the backup battery. Experimentation showed that moving the link from 5-6 to 5-3 and then back reset the CMOS and set the BIOS password to 10ZIG.