Hi Andrey, After issuing "Sntpdate ntp-server-ip", system time is all right now, but not the DateTime TAG in EXIF: TAG: DateTime and DateTimeOrinal 00 00 00 00 00 00 00 00 00 00 00 30 30 3a 30 30 3a 30 30 00 How could I let FPGA read or re-read system clock? Thanks. Robbert