Is it possible to re-flash a signed Jetson Xavier NX production module without private keyfile?

HI,
I have a board with Jetson Xavier NX production module(16GB emmc) that can enter the busybox of initfamfs after startup, and get its fuse information as follows:


According to: Secure Boot — NVIDIA Jetson Linux Developer Guide 1 documentation, there is a paired private key file that pairs with the publickey that shown above in the picture, But I do not have it.
So, Is is possible to re-flash this device and how?

Hi,
No, it is not possible. You would need the keys to generate the system image if secureboot is enabled.