Do not delete your old saves. Rename the folder or move them to your desktop. If the Sequence 5 save doesn't work for your region (e.g., EU vs US DLC), you will want your originals.
If you search for on Nexus Mods, MrAntiFun, or TheTechGame, you will find several variants. Here is how to distinguish a quality file from a broken one: assassin 39-s creed black flag save game sequence 5
A is the perfect balance. It respects your time by skipping the tutorial (Sequences 1-4) but respects the game design by leaving the entire open world, ship hunting, whale harpooning, and legendary ship battles for you to discover. Do not delete your old saves
If you're using mods on PC, ensure they're compatible with your game version to avoid corrupting your save files. If you search for on Nexus Mods, MrAntiFun,
If you're playing on PC through Uplay (now known as Ubisoft Connect), your saves are typically stored in a specific folder within your user directory. The general path is: C:\Users\[YourUsername]\Saved Games\Ubisoft\Assassins Creed Black Flag .