1. Make a backup copy of your savegame.gmd file.
2. Use any editor, which can show you the file in HEX-format.
3. Find place where word F.KONTO is first time...
4. Place you cursor on "F"-letter-bit.
5. Move your cursor 22 bits to the right (or 4 times down a 2 right).
6. Type now: 40 9D E5 C7 D0 41
7. Save file and start the game.
8. You have 1.1xx.xxx.xxx