It must be a FAT32 file system without any extra data or different partition types, or UEFI will mark it as invalid and move on to the next valid EFI binary configured.

3] Try to boot your computer from bootx64.efi file or bootia32.efi file manually Some users have reported that the issue was fixed after manually booting their computer from bootx64.efi file.

The System Reserved Partition or EFI System Partition on your hard drive is a tiny sector Windows uses to house system files such as the Boot Configuration Database, Boot Manager Code, and Windows ...

The researcher's analysis of the bootkit.efi file determined that Lenovo devices based on Insyde are the most susceptible, as Bootkitty references specific variable names and paths used by this brand.

You can theoretically take over during this boot process and point to your own EFI files, executable files for UEFI, and launch your own operating system, such as Windows.