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It's officially unbricked. Thank you for all your help sir!

I'll read that thread. Thank you!

Yes, I can see the boot process. And perhaps that's where I'm going wrong, I was pessing Control+U after powering on the unit. I will give that a try tomorrow.

Null modem cable obtained. Pressing Ctrl+U does nothing inside of Putty. I assume because of the firmware was modified by Alibi from the stock firmware of Hikvision. Looking through the help segment I can see no mention of upgrade.

Yes sir. Directly to the RS232 port. Hadn't considered the null modem cable as I've used a USB to RS232 cable before to access devices. Thanks for pointing out where I went wrong.

After many years of being in the installation of surveillance systems, I managed to brick a clients NVR for a first time. I know exactly what I did to cause the issue. I skipped one of the firmware updates. The NVR in question is a Alibi 5232P. The OEM being Hikvision. I found this thread on...