Hot answers tagged uefi
You should be able to load the certificate using MokManager.efi so that it's recognized by Shim, and therefore accepted by the kernel. I don't know if Fedora sets its GRUB up so that you can launch MokManager.efi yourself. If not, try booting (with Secure Boot disabled) a USB flash drive with an EFI shell or rEFInd. You should then be able to launch ...
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