For an image that already has the final 2023 security patches baked in, you can look to verified community repositories. Archive.org
Since official sources are gone, users often turn to community archives. These are unofficial and should be used with caution: windows 8.1 fully updated iso
Finalizing settings...
Installing features...
Once you have obtained a fully updated Windows 8.1 ISO, you can install it on your computer using the following steps: For an image that already has the final
Yes, Windows 8.1 fully supports UEFI, Secure Boot, and GPT. Ensure your ISO is built with the right boot.wim and efi folder structure. Windows 8.1 fully supports UEFI