Problem with EEPROM 93C56 in cluster
 

Hello
Maybe someone can help me? I drive a boxster 986 tiptronic from ‘97 and I made a mistake with programming my instrument cluster eprom (ST 93c56)
I must have changed some byte in the eprom without knowing and now everything works and the car works fine but my tiptronic leds does not work anymore.
Can you solve this problem? Maybe someone have a binary file from the eeprom and tell me where to look for?
I have a working PIWIS III with VAS 6154 and also an eeprom reader/writer but i can't find a way to activate the LED's working in the cluster.
Thanks