is there a way to make the 4.0 update download through epic rather than having to wait 2 days with the dangerous launcher open while it "sync files"
if not could you make it so it downloads through epic like a normal game
Did you actually waited 2 days with the Frontier launcher open, waiting for it to sync files? Genuine question...
Asking because in my own case the wait was like 10 minutes or less, then the download proceeded at about 50-60 MB/s
Now, regarding your question, not sure it's possible to link your FDev account to an Epic store account (to download the game using Epic) unless you also buy the game on Epic Games
However, you can link your Frontier account to the Steam store, export an Elite key to Steam and then launch the game through either the Frontier launcher or the Steam Elite launcher (without buying the game again on Steam)