This should work on all software versions of the 6110.
1. Go to the Calendar (Menu-8)
2. Make a note or reminder.
3. Enter some text into the edit box.
4. Hold "Clear" until the whole text is cleared, then press "Back".
5. Press "0". The main screen will now be showing but a space appears on the screen. (you can't see it)
6. Enter 4 digits (e.g. 1234).
7. Use the down arrow to move the cursor to the left side of the numbers and the space (Down arrow twice).
8. Now enter 6 digits and press the call button.
Wait for a few seconds, the screen should start to flash and reboots. It should alsowork on other menus like the "Profiles" menu.