Just tried upating again, and this error message (if it helps) showed up when it failed;
There were some problems installing updates, but we’ll try again later. If you keep seeing this and want to search the web or contact support for information, this may help: (0x8007054f)
This error code has only shown up this morning, before now I didn't get a code - but it could be our server protection getting in the way.... I will check and report back.