Shelly 2.5 in the update burn rollershutter motor

Today i was installing my last two shelly's 2.5 in my shutter's house (12 on total), during the configuration the Shelly app informed-me that 7 devices have newer firmware. So i did it. after 2 hours i founded that my bedroom shutter was opened. the switch dont work... so? i did the standard, toggle on/off the master power switch, and still not working, step 2, try the Standard reset 5 times... you know the drill. nope... step 3 open the box and try the reset button.... still dead.... step 4..... lets close the shutter the old way (im an installer of motorized roller shutters, easy for me). and i find out that the motor was not working at all. ok is night time now, tomorrow im going to open the box, but i bet that the motor is fried.

How can i have sure that was the update? Im running HomeAssistant and after the update he have lost the contact with the shelly.

Resolved! Clumsy electrician sended in a weird way the L line from the new shutters that I had installed. The L was switch depended. Just closed the shutters with an wire connected to a socket.