This tool is intended for legacy BIOS systems. It is not compatible with UEFI systems using GRUB2 with secure boot, as modern UEFI implementations typically handle boot graphics differently (via EFI framebuffer and GRUB themes). The tool specifically targets the gfxboot architecture used in distributions ca. 2010–2016.
Cause: File attributes or permissions block patching. Fix: gfx boot customizer 1006 106 install
attrib -r -s -h C:\bootmgr
takeown /f C:\bootmgr
icacls C:\bootmgr /grant Administrators:F
There is traditionally no "installer" package (.msi or setup.exe) for this specific version. The software is typically distributed as a standalone executable or a portable archive. This tool is intended for legacy BIOS systems
gfxboot-customizer.exe.