The article shows how to program eeprom with tacho pro 2008. http://www.careucar.com/wholesale/tacho-pro-2008-tacho-universal-plus-july-b.html

1. How to program EEPROM with Tacho
An EEPROM (Electronically Eraseable and Programmable ROM) is a ROM chip which can be
reprogrammed and cleared for many times fast and accurately. EEPROM chips are widely used in
many cars and trucks. The other day, a a customer called me, asking how to programming his
BMW EEPROM with our Tacho Pro 2008. To use Tacho Pro 2008, please follow the instructions
below.
Step 1. Clean the EEPROM chip. Make sure there is no paint or dust on it.
Step 2. Put oscillators on the board together.
Step 3: Put the clip on the EEPROM.
Step 4. Connect adapter-board to Tacho Pro 2008 and power up the mileage correction tool.
Step 5. Put the other end of the clip to the 8 pin port on the adapter-board with the red cable on the
pin 1 mark, as picture shown below.
Step 6. Select the car model on the main menu, and then click OK. The Tacho Pro will then read
the EEPROM and enter to the EEPROM menu.
Step 7. Save all data with the menu SAVE if the value shown in the machine is alright.

2. Step 8. Go to the KM adjustment menu, fill in the new value, and the Tacho 2008 will verify if the
EEPROM is successfully programmed.
Step 9. Remove the clip from the EEPROM.