provate aprendo il menu cheat allora, di solito nelle mod c'è sempre l'opzione change your banner
1.Press Ctrl + ~ on the world map and a console should open up.
2.Type "cheatmenu" without the quotation marks and press enter. This will make many cheat options become available.
3. Go under Camp and choose the option to "Take an action". Then choose "CHEAT: Modify your banner". Pick your desired banner.
4. Press Ctrl + ~ on the world map again and instead type "nocheatmenu", disabling all the debug messages and cheat options across the game.
Through this method, you will now have a new banner of your choice.
P.S: Make sure you type the cheatmenu commands without quotation marks and without capital letters. They're case sensitive.