PR4100 stuck in "System rebooting..." after last firmware update

[tungsteno]

PR2100: lights are flashing… fan is going on and off, and I can’t use the drive https://community.wd.com/t/pr2100-lights-are-flashing-fan-is-going-on-and-off-and-i-cant-use-the-drive/241194 so the way to exit WD and take another NAS after recovered data outside with Macrium…