Поменять батарейку, данные восстановить с помощью глобального меню.
Прекрасный ресурс по сабжу:
http://net.indra.com/~cliffcan/01online.htm
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How to Re-Load All Combi/Prog/Kit Factory Settings
1 Press GLOBAL to enter Global Mode.
2 Press "7" to go to Page 7.
3 Select "Load Combi/Prog" (on the top line).
4 Press G or H to execute the "LOAD" command.
If you see the message "ERROR: Memory Protected":
a. Press "4" to go to Page 4.
b. Go to the bottom line ("Protect").
c. Change the settings to show "Prog:OFF" and "Combi:OFF".
To turn Prog OFF: Press button "A", "B", "C", or "D". Press VALUE DOWN once.
To turn Combi OFF: Press button "E" or "F". Press VALUE DOWN once.
d. Go to Step 2 above.
5 The 01 will ask "Are You Sure? Yes No".
Notice that "yes" is positioned over buttons E and F. Pushing either E or F means "yes".
Notice that "no" is positioned over buttons G and H. Pushing either G or H means "no".
6 Push E or F. The message "Completed" should appear.
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Или более жестко:
If you REALLY want to reset your entire 01 to the way it came from the factory (all settings, not just Prog/Combi/Drums):
How to Re-initialize Your 01/W
1 Turn off your 01
2 Press and hold the COMPARE and RESET buttons
3 Turn on your 01
4 Continue holding COMPARE and RESET down.
You will see your ROM number and revision date briefly in the bottom-left corner.
After that, you will see Combi "A00 Init Combi" in the display.
5 Release the COMPARE and RESET buttons