To have the needed amount of renown to get the upgrades to your sub or to change your U-boat model use the following procedure:
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You have to be in the base after a mission for this cheat to work. Note: This procedure involves editing a game file; create a backup copy of the file before proceeding. Enter the “\ sh3 \ data \ cfg \ careers \” folder. Select the name of the folder that is the same as the career that you are using. Use a text editor to edit the file Patrols_0.cfg. Scroll down to your last mission details and change the amount of DeltaRenown that you got paid. example (DeltaRenown = 498.750000 Change to DeltaRenown = 6500.750000) Save the file and start the game.
You can now buy what you like in the game.
