Hello everyone, I have obtained an NVR608-32-4KS2, but I am encountering some issues. When I try to start it up, it takes me directly to the EFI SHELL interface. The NVR's firmware seems to be missing, and I suppose it can be considered bricked, so I need to reinstall it. I read the post "Dahua IPC EASY unbricking / recovery over TFTP". As far as I understand, I need to use a null-modem cable to connect to the RS232 interface but I cannot find the update.img file for this NVR608. I only find .bin files that do not contain update.img. Could you guide me and provide me with another method? Thank you."