Cubi 1M Disable secure boot.

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I have tried every combination of settings. I have set an Admin password for bios. I installed a secure boot compatible OS and tried disabling it in bios after that ran fine.
I am trying to install Home Assistant OS. It requires secure boot to be disabled.
The bios looks like it is disabled, but it isn't. I see no legacy boot option any where. Is there a way to enable advanced bios mode?
I have installed the OS on other systems that had secure boot. It works when secure boot is disabled. But this NUC just does not seem to allow it to be disabled.
Any clues you can give me?
 
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Please modify secure boot option and fast boot option to disabled in BIOS setup as attachments.
 

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  • B0B1_Secure_Boot.jpg
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  • B0B1_fast_boot.jpg
    B0B1_fast_boot.jpg
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My bios has other options. On the secure boot page, there is , Secure boot Mode and Secure Boot Preset, under the Secure Boot option. The Secure Boot Mode is only supposed to appear when Secure Boot option is enabled. But it is always there. So disable Secure Boot is not working at all on this page. I set Secure Boot Preset to Hardware/OS Compatibility.
On the Boot Page I also have MSI Fast Boot. Enable or disable?
Or.... is there an older bios firmware that I can roll back to?
Thanks for your help.
 
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