255.255.255.255 Ouch!

I have a AISIRER UK1D, I actually have 3! I flashed them all with Tasmota using Tuya_Convert and it was easy. I set one up with a timer each day then each the config was wiped and I need to reload the template. Sadly, not I have lost it completely, my USG says its IP address is 255.255.255.255 and I do not know how to get to it? Please help?

I have tried to reload flash it but On/Off button does not light up. I held is down for over 7 secs with puts its sisters into rapid blinking mode but this one is doing nothing. No light if I press it once, no flashing if I hold it down but it still shows in Unifi as 255.255.255.255.

I have tried holding the button for rapid blink mode in the hope that is still does go into that mode and run the tuya-convert with the vtrust_flash SSID but it never connects.

My MQTT server is not running yet so I never loaded any MQTT details on to it.

Please, any tips on how I might be able to talk to it? Otherwise I guess I am cracking it open!

You will have to crack it open and flash it serially.