As you may recall, the fourth patch for
Assassin's Creed: Unity was beset by an
unwanted problem which forced players to re-download the full game along with the update, for 40 GB of data. Ubisoft informs us now that the problem has been solved and now the patch will be applied correctly. More precisely, the developer explains that those who had already downloaded the update 4 will now receive a small update of 142 MB, while those who had downloaded the update 3 will receive 5.7 GB's and who had not updated the game (like the new buyers) will have a 6.3 GB patch to apply.
If you were so looking forward to this fix, you can now start the game update.