I am setting up a new QUAD board and was initially able to view the web control panel at my udoo's IP address (10.10.5.118). I then installed some updates: sudo apt-get update sudo apt-get install node sudo apt-get install npm sudo apt-get install express -g sudo apt-get install express-generator -g I rebooted the board and it got a new IP address (10.10.5.45). Somewhere in this process I think the default web server that comes with the board may have been erased. I can no longer access it at the new or old IP addresses. How can I get it running again? Where are the files stored? Do I need to re-download the img file onto the SD card? I am going to eventually put my own web server on the board, so it's not a critical problem, but I would like to know why it no longer works and how I can get it running again. Thanks.