1. Connect cable like on connectoin diagram 2. Connect power adaptor and usb cable to cpt programmer 3. Run cpt exe 4. Select uart and cpu name 5. Find clear file in database on support web www.carprotool.com/software 6. Double click "Write" button add clear file to buffer in cpt exe 7. Select FCK 8mHz or 10mHz 8. Clcik write button 9. Wait for finish ... it is all :-)