JetPack 4.5 - dependency of rootfs even when flashing existing image

Dear NVidia Team

With JetPack 4.4.1, we were able to flash existing system images (created with ./ -r -k APP -G backup.img board mmcblk0p1) without the necessity of the rootfs fully available, an empty folder was enough. Now with JetPack 4.5, the ./ command fails because it is searching for multiple files inside the rootfs. Why does it now need the files from the rootfs, when an image is not newly created? Is there a list, which files are needed inside the folder rootfs?
Thank you.

Kind regards

hello sevm89,

there’re new security related features added for JetPack-4.5, you may also refer to R32.5 release notes.

may I know what’s your actual use-case,