Philips Hue Iris 7099960PH not working after Update

[olafschmidt1984]

Hi,

I have an Philips Hue Iris 7099960PH (displayed in zigbee2mqtt as 7199960PH) which works very well till last week.
Then i got a notification in Home Assistant that there is an update for the lamp via zigbee2mqtt. I installed the update, which took quite a while but it was sucsessfully.
Now I have the Problem, that the lamp lost the zigbee connection and I cant control it anymore.
If I pair it again then it works for some minutes, but then lost the connection.

Before the update, I had never this issue.

Anyone an Idea? Or is there a chance to undo the update?