Pi's vfat partition isn't mounted at runtime (u-boot reads it pre-boot), so /boot/firmware doesn't exist -> keyFile moved to the always-mounted root fs. deploy flash now drops it on the ext4 root partition.
Pi's vfat partition isn't mounted at runtime (u-boot reads it pre-boot), so /boot/firmware doesn't exist -> keyFile moved to the always-mounted root fs. deploy flash now drops it on the ext4 root partition.