Think Pad 765d CRC error

[ulgis]

   I removed the eeprom from my thinkpad 765d and read it. I also removed all batteries (3V lithium and 3.6 NiMH).
  After I putted all pieces together it gives me 175 (bad CRC).
  Does any body know how to count CRC, or maybe does any body have a good (working) eeprom dump?
 Thank you.