To back up the BHT-1100-CE registry, keep pressing the power key simultaneously with the [CTRL] key (or the [SF] key) for more than three seconds while the BHT is ON. The message ”Now saving Registry. Do not remove the battery" is displayed on the screen and a backup of the registry begins. When the registry is properly backed up, the BHT automatically turns itself off.
For the BHT-1200-CE, hold down the power key for more than three seconds together with the [SF] key while the BHT is ON.