RPI doesn't shutdown when connected to PoE hat

[weshouman]

Describe the bug
RPI restarts whenever it gets shutdown when powered through a PoE hat.

To reproduce
Connect PoE hat to the RPI.
Power the RPI.
Shutdown the RPI.

Expected behaviour
RPI shuts down.

Actual behaviour
RPI restarts.

Additional context
A previous solution is found on the forum but not publicly accessible here

[popcornmix]

What model of Pi is it?

[weshouman]

That's for the PI 4
Note: PI 3B+ doesn't have this issue, based on multiple users on the forum

[popcornmix]

Is bootloader up to date? https://www.raspberrypi.org/documentation/hardware/raspberrypi/booteeprom.md

[mitchind]

That is fixed now for me running latest stable firmware
sudo rpi-eeprom-update
BCM2711 detected
Dedicated VL805 EEPROM detected
BOOTLOADER: up-to-date
CURRENT: Mon 15 Jun 2020 01:36:19 PM UTC (1592228179)
LATEST: Mon 15 Jun 2020 01:36:19 PM UTC (1592228179)
FW DIR: /lib/firmware/raspberrypi/bootloader/stable
VL805: up-to-date
CURRENT: 000137ad
LATEST: 000137ad

[weshouman]

I confirm that it now got fixed for me too.

Further details

Before Bootloader Update

The previous output of vgencmd bootloader_version was

May 10 2019 19:40:36
version d2402c53cdeb0f072ff05d52987b1b6b6d474691 (release)
timestamp 0

After Bootloader Update

The current output of vgencmd bootloader_version is

Jun 15 2020 14:36:19
version c302dea096cc79f102cec12aeeb51abf392bd781 (release)
timestamp 1592228179

How-to

I gathered the steps for updating the bootloader in this gist