Re: Launcher stuck on update.

Sounds like bitraider is stuck.  I would open your task manager, look for the bitraider client under processes and then force it to stop, then reopen the launcher and try again.

A more permanent fix is to remove bit raider.  If you wish to do this, steps are below:

NOTE this is a complete download of the game again

right mouse click on game shortcut and select open file location

open the launcher.settings file in notepad and locate the below line and edit to the below

, "PatchingMode": "{ \"swtor\": \"SSN\" }"
, "bitraider_disable": true

SAVE the changes.
Delete the BitRaider, Movie and Asset folders then start the launcher.