Here's how to perform a Factory Reset on the TM-6 PRO.
CAUTION: When performing a reset, ALL User information will be permanently deleted. Be sure to back up any information you wish to keep first before doing a reset.
1. Turn on the TM-6 PRO's power.
2. Press the MENU button.
3. Use the cursor buttons to highlight "SYS," and then press ENTER.
4. Press the cursor down button repeatedly until "Factory Reset is highlighted, and then press the function 3 button (F3) for "SELECT."
5. Press F3 again (FACTORY RESET).
6. Cursor right once to highlight "OK" and then press ENTER.