Try a full power cycle disconnecting power and battery. Leave the whole thing off for 10+ minutes before powering back up. Check the battery to ensure it is not bloated or pillowed. If it is, it should be replaced (they recommend replaced about every 5 years or so on the battery).
Once power is connected, and the panel rebooted. Does the panel stay stable or does it reboot again?
Your panel is reporting firmware 2.7.2 which was released back in '22. The most recent firmware update for the IQ Panel 2 is 2.8.1 which came out in '23. You need the panel to be on with Wi-Fi connected or the panel to be on and have an SD card to update firmware on the IQ Panel 2.