UltiMaker 3 bug

1st Bug: Auto bed levelling stuck in "levelling, please wait..." -> Update of firmware through USB https://ultimaker.com/en/resources/20500-upgrade-firmware

2nd Bug: "Installing new firmware... Do not power off printer" for more than 30minutes: https://community.ultimaker.com/topic/21089-firmware-upload-problem/

Recovering a Bricked UtM3: https://community.ultimaker.com/topic/20024-recovering-a-bricked-um3/