Thanks, and sorry to late reply.
I am going to use internal EEPROM of beaglebone black.
I should write some data to it. I can read data from the internal EEPROM, but writing is not.
I grounded TP4 pin for EEPROM write. But it doesn't work.
I maybe new to beaglebone.
Beaglebone SRM document says we can use internal EEPROM for personal purpose.
Can you help me?