Hi, > V1.209 and later should have RTC. What version do you have? # hexdump -C /sys/bus/i2c/devices/0-0050/eeprom 00000070 0c 00 00 00 01 00 56 31 2e 32 30 38 00 00 89 0b |......V1.208....| How should we handle the older versions? Thanks, Chukun