I have a big problem with my lumia 830 after the update this night the install start and fail after a short time with a kind smiley :-(.
So i tried to recover my phone with the Windows Device Recovery Tool, but once I connect my phone to my PC, the phone always try to install the update and restart after he failed. The tool connect to the phone for a short lapse of time so I successfully download the system img but I cannot install it because the phone doesn't hold the connection.
I tried a hardreset but it doesn't work, after pressing the power button and then hold the volume down button the phone restart after 5secondes (and so on) and never displaythe exclamation(!).
Any idea how i can recover my phone?