Did I bricked my BP50NB40?

[kampi]

I have a pretty old BP50NB40 LG drive, and I flashed it with the firmware "HL-DT-ST-BD-RE_BP50NB40-NB50-1.03-NM00800-212005070917.bin" from "The all you need firmware pack" by using SDFtool Flasher (v1.3.5) and a Win 11 PC.
After that, I made a power cycle of the drive, but the drive doesn´t open, and I can´t eject the Blu-ray from it with the Eject button in MakeMKV. I inserted Terminator 2 4K Blu-ray, but MakeMKV doesn´t list the disc.

What may be the issue here? Is it because it's a 4K disc? The drive is from 2016.
Thanks for your help!

[Billycar11]

Unplug it until you are recovering it.

What's the svc code on bottom needs to be 50/52
If it's 40 you need to recover it back to old fw