I'm still stuck at "PauseDownload", I'm now trying to reboot again, fingers crossed...
EDIT: Someone on Facebook has suggested (at your own risk!) to delete the Firmware Update app's cache to trigger again the download. I have tried it, but now the download is stuck at 69MB, anyway if anyone would like to try it too: go to Settings > Apps > dots menu (top right) Show System > find Firmware Update > Storage > Clear Data.
Varti